Patent ID: 12234697

DETAILED DESCRIPTION

In the following description, various embodiments will be described. For purposes of explanation, specific configurations and details are set forth in order to provide a thorough understanding of the embodiments. However, it will also be apparent to one skilled in the art that the embodiments may be practiced without the specific details. Furthermore, well-known features may be omitted or simplified in order not to obscure the embodiment being described.

Various other functions can be implemented within the various embodiments as well as discussed and suggested elsewhere herein. In at least one embodiment, the present disclosure is to a system and a method for performing downhole run and/or retrieval operations, and more specifically, to tool assemblies to be interchangeably associated with a tool body for downhole run that and/or retrieval operations on features associated with a downhole environment.

In at least one embodiment, a tool body with a tool assembly represents a system that may be used for both run and retrieval operations to be performed in a single trip to run features into the downhole environment and to retrieve wear bushings (WB) and nominal seat protectors (NSP) from a downhole environment. Such run and retrieval operations may be combined with a bottom hole assembly (BHA) for tripping in and out of a well bore during drilling activities. However, only run operations may be performed using the tool assembly and tool body where the WB/NSP features are left as installed in the downhole environment. Similarly, only retrieval operations may be performed by the system. The system is, therefore, able to address various deficiencies previously described by use of a replaceable blade design that forms a tool assembly to be associated with a tool body in a changeably manner.

In at least one embodiment, such replaceable blade design may be provided in various sizes. For example, an outer profile of a tool assembly may be sized to meet an inner diameter requirements of specific downhole environments in which run and/or retrieval operations are performed, such as, a borehole or a casing hanger of different inner diameters. Even with the different sized outer profile, such a tool assembly may have a standard matching profile to mate with an outer profile of a tool body. As such, the tool body represents a universal main body in a way that prevents components, such as a tool assembly, from fall of the tool body during operation.

In at least one embodiment, fastening features are provided between the tool assembly and the tool body, where such fastening features do not incorporate components capable of falling downhole. A system of a tool body and tool assembly herein maintains an existing bit run profile for its outer profile of the tool assembly to prevent requirement for changes to be made to a nominal seal protector (NSP) or wear to bushings associated with such a system.

In at least one embodiment, a tool assembly includes blades that are manufactured using additive hard facing methods so that such a tool assembly can be repaired without a need for scrapping the entire system that would have otherwise been the case for a unibody downhole tool having an outer tool profile. In at least one embodiment, hard facing on a tool assembly improves wear resistance, while providing bolt-on or slide on tool components with impact loading protection and stress distribution advantageously address issues of other run and/or retrieval tools. The present system dramatically increases commercial flexibility by offering, among other benefits, a faster turnaround time relating to repair or refurbishing a tool assembly, which in turn translates to time saving opportunities that can be passed on to downstream users and translates to lesser demands on a supply chain associated with such a system.

In at least one embodiment, use of a changeable tool assembly with a tool body also provides an opportunity to use replaceable blades dimensioned to the downhole environment, which increases available use for single components (such as, tool bodies) and provides opportunities for use of a single component across multiple products and designs. For example, a tool body may be a universal tool for running and retrieving features from wellbores that are other than a single entity's wellbore, such as, by providing a tool assembly that incorporates wellbore-specific outer profiles.

In at least one embodiment, a tool assembly herein offers replaceable blade designs fitted to a tool body with features that cannot fall from a system that includes the tool body during operation. Fastening features to associate, including to lock, the tool assembly to the tool body are described herein, where such fastening features are without components that can fall downhole.

In at least one embodiment, a unique geometry, such as raised or inset dovetail features on a tool body and matching inset or raised dovetail features on an inner surface of a tool assembly, provide matching profile adoption together with lock dogs mechanism, such as a spring-loaded dog to form part of at least one releasable member, that is fully hidden in the tool body, directly under blades, enable a strong association together or a tool assembly and a tool body with no physical means to separate each other than using an access port and a release tool. In at least one embodiment, the tool assembly can be disassociated, such as, disassembled, by depressing the lock dogs through the access port that forms a service hole and using a release tool that is plugged during use of the system or that is external to the system.

The features of the system and tool assembly herein dramatically reduces lead time to manufacture, service, and maintain the system and tool assembly. Further, there are fewer long lead components in the final component assembly using such a system. This at least results in an increase in utilization or life of the system by removing consumable items from at least the tool body.

FIG.1is a schematic view of an embodiment of a system100for performing downhole run and/or retrieval operations, in accordance with embodiments of the present disclosure. The system100may include a rig102and a drill string104coupled to the rig102. The rig may be over a terranean surface or a sea surface. However, other implementations of such a system may incorporate features of a method and system disclosed herein. The drill string104includes a downhole system or tool128at a proximal end that may be rotated to engage an inner diameter of a casing126or underground or earth formation108associated with a wellbore110. In at least one embodiment, drill string104includes a downhole system or tool128at a proximal end that may be rotated to engage an inner diameter of a casing126that is in a subsea level or formation108. This enables the downhole system or tool128to run or to retrieve features, such as wear bushings and nominal seat protectors in the casing126or the wellbore110. Although a spacing is illustrated between a casing126and a wellbore110, at its sidewall112, this spacing is illustrative only and may not exist in the downhole environment124.

The drill string104can be formed from one or more tubulars that are mechanically coupled together (e.g., via threads, specialty couplings, or the like). As shown, the wellbore110includes a borehole sidewall112(e.g., sidewall) and an annulus114between the wellbore110(or between a casing126) and the drill string104or a wireline. Moreover, a bottom-hole assembly (BHA)116is positioned at the end of the drill string104. In the example shown, the BHA is positioned at the bottom of the wellbore110or casing126. The BHA116may include a drill bit106, a drill collar118, stabilizers120, or the like.

In at least one embodiment, the system100includes various tools122, such as logging tools and surface logging tools, which may be utilized to obtain measurements from the formation108. The logging tools, which are part of the BHA, include, for example, logging while drilling tools and may include nuclear tools, acoustic tools, seismic tools, magnetic resonance tools, resistivity tools, sampling tools, and the like.

FIG.2Aillustrates a tool body200for performing downhole run and/or retrieval operations, according to at least one embodiment In at least one embodiment. In at least one embodiment, the tool body200is part of a system for downhole run and/or retrieval operations of features. The tool body200includes an interfacing profile202. The tool body200may be associated with other tools within a BHA, as described with respect toFIG.1. For example, threads or other mating features at a proximal end204of a tool body200allows for such mating on one side, with a distal end208open or further association with other tools or terminated by an appropriate termination feature.

FIG.2Billustrates a tool body230for performing downhole run and/or retrieval operations, according to at least one embodiment In at least one embodiment. In at least one embodiment, the tool body230is part of a system for downhole run and/or retrieval operations of features. The tool body230includes an interfacing profile232. The tool body230may be associated with other tools within a BHA, as described with respect toFIG.1. For example, threads or other mating features at a proximal end234of a tool body230allows for such mating on one side, with a distal end238open or further association with other tools or terminated by an appropriate termination feature.

In at least one embodiment, differently than the embodiment inFIG.2A, the tool body230inFIG.2Bincludes a neck section for the interfacing profile232and includes passthrough holes236on the tool body230for a locking feature. The locking feature may be heads of a screw or bolt (as further described inFIG.5B) to provide a surface for a matching shoulder of a tool assembly. This may be different than a shoulder interface described with respect to the embodiment inFIG.5Ausing the tool body ofFIG.2A.

FIG.3illustrates details300of a tool body, such as a tool body200inFIG.2, for performing downhole run and/or retrieval operations, according to at least one embodiment. Such details300may be on an interfacing profile302on at least one side of a tool body, which is also referenced as an interfacing profile202of a tool body200inFIG.2. Further, such details300may be replicated on multiple sides of a tool body, but is illustrated in detail to one side at least. Details300include a releasable member pocket322for including a releasable member, such as a spring-loaded dog. In at least one embodiment, the releasable member pocket322allows a releasable member to be seated therein in only one fit so that it cannot be improperly installed.

The interfacing profile302includes a number of raised or inset dovetail features304to form part of the interfacing profile.FIG.3also illustrates that the dovetail features304include a dovetail profile310when each dovetail feature304is viewed in a cross-sectional view AA306, as illustrated in callout308B. A matching dovetail profile312of a tool assembly, such as described further inFIGS.5-7C, allows multiple matching inset or raised dovetail features314of the tool assembly to form part of an inner matching profile of the tool assembly, as illustrated in at least these figures. Furthermore, while dovetail features of the tool body is illustrated as raised dovetail profiles to mate with inset dovetail profiles of the tool assembly, it is also possible to provide the inset dovetail profiles in the tool body to mate with raised dovetail profiles on the tool assembly.

The dovetail feature304of the tool body also enables a railing feature320, at least on its sides, that is part of the interfacing profile302. The matching inset or raised dovetail features314of the tool assembly also enables a seating feature (such as, a seating feature652inFIG.6B) that is adjacent to the dovetail profile and is part of the inner matching profile (such as, an inner matching profile654illustrated inFIG.6B). The railing feature and the seating feature are so that the tool assembly can slide over the tool body to be locked in place as part of an association between the tool assembly and the tool body.

In at least one embodiment, a retention feature316allows for a retention screw, such as illustrated in and discussed with respect toFIG.5A, within a shoulder316B, to further associated together with a surface having a corresponding feature of the tool assembly with the tool body. The retention feature316can be one of multiple passthrough features providing a passthrough hole in the tool assembly and the tool body for the retention screw to be screwed through.FIG.3also illustrates, in callout308A, a cutaway316A of a retention feature through with a retention screw may be passed to retain a position of the tool assembly with the tool body when they are associated together. However, the retention feature and retention screw may be part of other retention aspects allowed between the tool assembly and the tool body. The retention feature316having the passthrough hole, together with the retention screw, can provide a second lock between the tool assembly and the tool body that is different from a first lock provided by the releasable member pocket322including a releasable member after axial sliding between the tool assembly and the tool body.

In at least one embodiment, while the retention feature and the retention screw allow further association of the tool assembly with the tool body, there are no downhole related forces experienced with such a retention feature and retention screw. Instead, torque or rotational load is experienced at the interface profile302of the tool body and the inner matching profile of the tool assembly. Pertinently, when dovetail features are used, the torque or rotational load may be experienced in these features.FIG.3also illustrates a shoulder318, as part of the interface profile302, on the tool body. The shoulder318allows a matching shoulder or surface of a tool assembly to rest once the tool assembly is slid over the tool body and locked in place as part of its association with the tool body. The shoulder318also bears an axial impact during a run and/or retrieval operations in a downhole environment. This shoulder318and its associated surface is a second shoulder-surface interface that is at an opposite end from a first shoulder-surface interface.

FIG.4illustrates further details400of a tool body for performing downhole run and/or retrieval operations, according to at least one embodiment. InFIG.4, the details400is illustrated in a lengthwise section of the tool body. For example, the further details400include at least one releasable member404that may be provided on the interface profile402of the tool body. The releasable member is associated with the tool body using springs406within provided areas or spring pockets412of the releasable member.

In at least one embodiment, an angled indentation of a tool assembly is provided to receive the releasable member404. For example, as the tool assembly slides axially over the interface profile402, a flat surface (such as surface540inFIG.5A) adjacent to the angled indentation (such as angled indentation522ofFIG.5A) of the tool assembly first depresses the releasable member404; but as the angle indentation moves over the releasable member404, in a second action, it allows the releasable member404to fit snugly within the angled indentation, as illustrated in part in at leastFIG.5A. This provides a position lock for the association between the tool assembly and the tool body. This may be a first lock between the tool assembly and the tool body.

FIG.4also illustrates, in a callout404A, an indentation or depressed pocket408that may be part of a release feature between the tool assembly and the releasable member of the tool body. For example, the indentation408allows thereon a release tool to press against the releasable member of the tool assembly. An access port of the tool assembly (such as, an access port520in a tool assembly502inFIG.5A) may be a pluggable access port forming another part of the release feature. The access port of the tool assembly can receive a plug for closure of the access port to prevent inadvertent pressure on the releasable member404.

In at least one embodiment, the access port also prevents entry of any debris or other downhole matter into the interface between the tool assembly and the tool body. With a plug removed, the access port of the tool assembly can also receive a release tool to depress the releasable member for disassociating the tool assembly from the tool body. In at least one embodiment, the access port already has a release tool within it with a depressed and threaded plug. The depressed and threaded plug prevents inadvertent pressure on the release tool. Further, threading, or causing downward pressure in other manners, of the depressed and threaded plug causes the access tool to move down into the releasable member. These aspects allow the releasable member to be depressed after removal of a plug or using the plug in the pluggable access port.

The access tool pushed into the releasable member404can cause the releasable member to depress and release from the angled indentation if simultaneous pulling or pushing action is axially applied to move the tool assembly against the tool body. For example, with the releasable member400depressed and with the tool assembly moved axially relative to the tool body, the tool assembly disassociates from the tool body.

FIG.5Aillustrates association details500of a tool assembly502with a tool body504for performing downhole run and/or retrieval operations, according to at least one embodiment.FIG.5Aillustrates the association details500in a partly longitudinal cross-section view for the tool assembly502overlying surface detail view of a tool body504. The tool assembly502has an outer tool profile, as discussed in at leastFIGS.6A,6B, and7B, has an indentation522, such as an angled indentation, to receive at least one releasable member526, and has an inner matching profile534to be associated with the interfacing profile536of the tool body. In at least one embodiment, the releasable member526is a spring-loaded dog. The association details500also includes a landed association details500A and a locked association details500B. In at least one embodiment, the releasable member526is provided to absorb radial loading on the system having the tool assembly and tool body during a run and/or retrieval operation.

In at least one embodiment, the tool assembly502can be unlocked to be changeably associated with the tool body504for use in the downhole run and/or retrieval operations of features. In one example, in the landed association details500A, the tool assembly502is landed or seated (such as, by a movement in a tangential direction506A relative to an axis538of the tool body) over the tool body504. In one example, in the locked association details500A, the tool assembly502is moved along an away axial direction506B relative to the axis538of the tool body. In at least one embodiment, an away axial direction506B is toward a bottom or distal end of the tool body. Between the association details500A, B ofFIG.5A, the narrow dovetail features of the inner matching profile534is illustrated as moved (comparing500A to500B) distally over dovetail features of the interfacing profile536of the tool body.

In at least one embodiment, when it is landed, the tool assembly502provides an indentation or guide profile524to accept the releasable member526during landing association between the tool assembly502and the tool body504, so that the tool assembly502sits flush with the tool body504prior to a locking association. This is illustrated in the landed association details500A, with a sideview cutout of an area516to provide further clarity to the landing association details. When the tool assembly502is moved in an away axial direction, towards a distal end of the tool body, a flat surface540of the tool assembly502depresses the releasable member526against the heavy duty springs528. At the same time, matching dovetail features on the inner matching profile534of the tool assembly502start to associate with dovetail features of the interfacing profile536of the tool body.

As the tool assembly502is moved further axially, the releasable member526passes the flat surface540and springs into the angled indentation522, while the matching dovetail features and the dovetail features become fully associated together. The springs528press the releasable member526against the tool assembly502as the dovetail features and the matching dovetail features are engaged and held in place. This causes the tool assembly502to be locked with the tool body504. This is illustrated in the locked association details500B, with a sideview cutout of an area530ofFIG.5Athat provides more clarity of the locking association details.

FIG.5Afurther illustrates a passthrough feature514(partly in dotted lines to illustrate that it is within the tool and partly formed of an alignment of a first passthrough hole510at a proximal end of the tool assembly502) and a second passthrough hole512at a proximal end of the tool body504provide a first shoulder-surface interface542for a second lock using a retention screw, a bolt, a J-slot, or another spring-loaded dog. This passthrough hole514forms a retention feature that allows for a retention screw532therethrough. This is illustrated in a cross-sectional cutout of an area6inFIG.5Ato provide clarity of such features. The retention screw532is only used once the tool assembly502is in a locked association with the tool body504. In at least one embodiment, the retention screw532is always within the retention feature but may be screwed to move into an engagement with the tool assembly.FIG.5Aalso illustrates an access port520that is a hole in a tool assembly502and that is located over the angled indentation522of the tool assembly502. The access port520includes or can accept a release tool518to cause disassociation, in part, of the tool assembly502from the tool body504.

In at least one embodiment, for disassociation of the tool assembly502from the blade body504, the retention screw532may be first removed. Then, the release tool518may be used with an external force or pressure applied to the release tool518, through the access port520, so as to depress the releasable member526against heavy duty springs528. In a depressed position, the releasable member526does not engage the angled indentation522. With the releasable member526depressed, the tool assembly502may be pulled axially506B towards a proximal end of tool body504or pushed axially away from the distal end of the tool body504. As a result, the dovetail features of the tool assembly and of the tool body allow axial sliding against each other with the railing feature and the seating feature providing alignment for such movement. Once the dovetail features are disassociated, the tool assembly502may be removed by a tangential action506A, away from an axis538of the tool body504. Then a new tool assembly may be attached to the tool body504.

In at least one embodiment, there may be multiple such releasable members526for each tool assembly502. As such there may be multiple access ports and release tools for each access port. In at least one embodiment, there may be multiple tool assemblies502located on other surfaces of the tool body504so that there may be at least tool assemblies on opposing sides of the tool body. For example, there may be four tool assemblies on a tool body with each tool assembly having a counterpart tool assembly on an opposing surface of the tool body.

FIGS.5B and5Cillustrate other association details550;570of a tool assembly552with a tool body554for performing downhole run and/or retrieval operations, according to at least one embodiment.FIG.5Billustrates the association details550in a partly longitudinal cross-section view for the tool assembly552overlying surface detail view of a tool body554. The tool assembly552has an outer tool profile, as discussed in at leastFIGS.6C,6D, and7C, has an indentation558, such as a square indentation, to receive at least one releasable member560(inFIG.5C), and has an inner matching profile562to be associated with the interfacing profile232of the tool body554;230.

The tool assembly552includes the inner matching profile564to be associated with the interfacing profile232and to allow axial sliding for a first lock of the tool assembly to the tool body. The first lock or locking feature, in one example, may be enabled by a releasable member560, such as a spring-loaded dog, which can perform in the manner described with respect to the embodiment inFIG.5A. A second lock or locking feature is provided for the tool assembly and the tool body at least by a shoulder-surface interface between the tool assembly and the tool body provided by a retention feature in a passthrough feature, which is described with respect toFIG.7C.

For example, a head or other part556of retention features, such as a screw or bolt, when placed through a passthrough hole236that forms a retention feature, provides the second lock. This further associates together the tool assembly and the tool body. The retention feature can be one of multiple passthrough features providing a passthrough hole in the tool assembly and the tool body for the retention screw to be screwed through. However, the retention feature and retention screw may be part of other retention aspects allowed between the tool assembly and the tool body. The retention feature having the passthrough hole, together with the retention screw, can provide a second lock between the tool assembly and the tool body that is different from a first lock provided by the releasable member pocket566including a releasable member560after axial sliding between the tool assembly and the tool body. Therefore, the tool assembly is changeably associated with the tool body for use in the downhole operations.

In at least one embodiment, as illustrated inFIGS.5A-5C, a gap544is allowed between the tool assemblies and the tool body so that stress caused by bending of the tool body can be withstood by the system and allowed in the gap544. Further, like the case ofFIG.5A, inFIGS.5B,5C, an access port for a tool assembly (such as, an access port564in a tool assembly552inFIG.5B) may be a pluggable access port forming another part of the release feature. The access port of the tool assembly can receive a plug520A for closure of the access port, but a tool to thread a provided screw can be used to pressure the releasable member560against its spring and away from the tool assembly552to allow the tool assembly552to slide over the tool body554to be disassociated and replaced.

FIGS.6A,6B,7A,7Billustrate outer and inner profile details600,650,700,750of at least two different tool assemblies600,650;700;750for performing downhole run and/or retrieval operations, according to at least one embodiment.FIG.6Bmay be an illustration of an underside of a tool assembly ofFIG.6Aor may be of different tool assembly than inFIG.6A. In at least one embodiment,FIGS.6A,6Billustrate a passthrough hole606of a passthrough feature at a first surface606A (to be part of a first shoulder-surface interface) and a second surface608of a second shoulder-surface interface, in a system having a tool assembly and a tool body.FIGS.6A,6Balso illustrate that the tool assembly has a determined thickness656so that, when associated with a tool body, the tool assembly600,650can reach a determined internal diameter of a wellbore or casing in which it is applied for run and/or retrieval operations.

In at least one embodiment, the passthrough hole606of the tool assembly, when aligned with another passthrough hole that is on a tool body, forms a retention feature for a retention screw or other fastener therethrough. The alignment between the passthrough holes to form the retention feature is apparent in a locked association that is first enabled between the tool assembly and the tool body by sliding the tool assembly axially over the tool body.

Further, the shoulder-surface interface between the tool assembly and the tool body may be enabled as part of an association and part of a disassociation between the tool body and the tool assembly. The shoulder-surface interface is provided when the tool assembly is moved axially relative to the tool body by sliding the tool assembly axially over the tool body to a locked association between the two. The surface608of the shoulder-surface interface is a bottom surface of the tool assembly, while the shoulder is a bottom shoulder of the interface profile on the tool body (such as, a bottom shoulder318of an interface profile302inFIG.3).

FIGS.6A,6Billustrate that a tool assembly600,650includes an outer tool profile610. The outer tool profile610may be formed of multiple blades602that are angled in a direction from a distal end to a proximal end of the tool assembly600,650. The outer tool profile610also includes an area612for a run aspect to be positioned. The run aspect may be WBs or NSPs to be landed by positioning such WBs or NSPs in the area612and releasing it into an appropriate part of the borewell or casing hanger.FIG.6Balso illustrates that its matching dovetail features654of the tool assembly600,650, to the dovetail features of a tool body, are inset dovetail features. In at least one embodiment, the matching dovetail features of the tool assembly600,650may be raised dovetail features when the to the dovetail features of a tool body are inset features, so that mating of the dovetail features and the matching dovetail features is possible. Further,FIG.6Billustrates a seating feature652that is located at least on its sides, that is part of the inner matching profile658.

FIGS.6C and6Dillustrate outer and inner profile details672,682of at least two different tool assemblies670,680for performing downhole run and/or retrieval operations, according to at least one embodiment.FIG.6Bmay be an illustration of an underside of a tool assembly ofFIG.6Aor may be of different tool assembly than inFIG.6A. In at least one embodiment, differently than a passthrough hole,FIGS.6C,6Dillustrate multiple shoulder-surface interfaces. For example, first shoulder or surface features674enable contact of the tool assembly670with a shoulder or surface of a screw head or bolt556(inFIG.5B, which can used to as an external retention screw instead of the retention screw532that is interiorly placed inFIG.5A). A second surface676of the multiple shoulder-surface interfaces in the system having a tool assembly and a tool body allows contact with a shoulder of a tool body554. This allows the tool assembly to be position and then locked in position by at least the screw of the first shoulder-surface interface.

FIGS.6C,6Dalso illustrate that the tool assembly670;680has a determined thickness (such as described with respect toFIGS.6A,6B) so that, when associated with a tool body, the tool assembly670;680can reach a determined internal diameter of a wellbore or casing in which it is applied for run and/or retrieval operations. In at least one embodiment, the first shoulder-surface interface forms a retention feature using a retention screw or other fastener therethrough the provided hole of the tool body670;680.

FIGS.7A,7Billustrate that a tool assembly700,750includes an outer tool profile710that is of different thickness than a tool assembly600,650inFIGS.6A,6B. For example, the thickness756of a tool assembly700,750represents a different sizing or dimension of the tool assembly (than a thickness656of a tool assembly600,650) so that it can reach a different internal diameter of a wellbore or casing in which it is applied for run and/or retrieval operations. Pertinently, the internal diameter of a wellbore or casing for which a tool assembly700,750ofFIG.7A,7Bis used is a lesser than an internal diameter of a wellbore or casing for which a tool assembly600,650ofFIGS.6A,6Bis used.

As a wider internal diameter of a wellbore or casing requires the tool assembly to reach further from a tool body and, a thicker tool assembly, as inFIG.6A,6Bis appropriate. In at least one embodiment, some sizes of a borehole or casing addressable by the tool or system herein include a downhole environment having an 18¾″ internal diameter representing a size in a subsea wellhead; a 9⅝″, 10¾″ and 13 3/7″ representing internal diameters of different casing hangers.

FIGS.7A,7Billustrate that a tool assembly700,750includes an outer tool profile710. The outer tool profile710may be formed of multiple blades702that are angled in a direction from a distal end to a proximal end of the tool assembly700,750. The outer tool profile710also includes an area712for a run aspect to be positioned. The run aspect may be WBs or NSPs to be landed by positioning such WBs or NSPs in the area712and releasing it into an appropriate part of the borewell or casing hanger.FIG.7Balso illustrates that its matching dovetail features754of the tool assembly700,750, to the dovetail features of a tool body, are inset dovetail features. In at least one embodiment, the matching dovetail features of the tool assembly700,750may be raised dovetail features when the to the dovetail features of a tool body are inset features, so that mating of the dovetail features and the matching dovetail features is possible. Further,FIG.7Billustrates a seating feature752that is located at least on its sides, that is part of the inner matching profile758.

In at least one embodiment,FIGS.7A,7Billustrate a passthrough hole706of a passthrough feature and a surface708of a shoulder-surface interface in a system having a tool assembly and a tool body. In at least one embodiment, the passthrough hole706of the tool assembly, when aligned with another passthrough hole of a tool body, forms a retention feature for a retention screw or other fastener therethrough. The alignment between the passthrough holes to form the retention feature is apparent in a locked association that is first enabled between the tool assembly and the tool body by sliding the tool assembly axially over the tool body.

Further, the shoulder-surface interface between the tool assembly and the tool body may be enabled as part of an association and part of a disassociation between the tool body and the tool assembly. The shoulder-surface interface is provided when the tool assembly is moved axially relative to the tool body by sliding the tool assembly axially over the tool body to a locked association between the two. The surface708of the shoulder-surface interface is a bottom surface of the tool assembly, while the shoulder is a bottom shoulder of the interface profile on the tool body (such as, a bottom shoulder318of an interface profile302inFIG.3).

FIG.7Cillustrates a system770of tool assemblies780including an outer tool profile782on tool body774. The tool assemblies780may be as described inFIGS.6C,6D. Further, a first shoulder-surface interface776is enabled by the screw head or bolt head784between each tool assembly780and the tool body774. The first shoulder-surface interface776may be enabled as part of an association and part of a disassociation between the tool body774and each tool assembly780.

A second shoulder-surface interface778is at an opposite end from the first second shoulder-surface interface776and is provided when each tool assembly780is in a locked association with the axially relative to the tool body774. The surface772of the second shoulder-surface interface778is a bottom surface676of each tool assembly780, while the shoulder is a bottom shoulder772of an interfacing profile on the tool body774. The second shoulder-surface interface778is provided by sliding the tool assembly axially over the tool body774. The second shoulder-surface interface778may only stop further movement of the tool assembly against the tool body, but a first locking between the tool assembly and the tool body is enabled by a spring-loaded dog and a second lock is enabled by the first shoulder-surface interface776.

In at least one embodiment,FIGS.6A,6B and7A,7Billustrate at least two different tool assemblies that are interchangeable for having different outer tool profiles610,710, but can be associated with the same tool body because of having the same inner matching profile658,758. Similarly,FIGS.6C and6Dillustrate at least two different tool assemblies that are interchangeable for having different outer tool profiles672,692, but can be associated with the same tool body because of having the same inner matching profile682,698. Further, the different tool assemblies can have different thickness to reach different inner diameters of a borewell or a casing. In at least one embodiment, individual ones of the different tool assemblies can have different circumferential blades and blade types to access inner diameters of boreholes and casing hangers. For example, instead of tool assemblies of a same type that can be associated together on a tool body to represent a circumferential blade on a tool body, different fully circumferential tool assemblies, such as a sleeve having an outer tool profile and having an inner matching profile to be used with a same tool body can be provided. Such a sleeve format tool assembly can also be changeable and can have different circumferential blades for a tool body.

FIG.8Aillustrates alternate details800of a tool body802for performing downhole run and/or retrieval operations, according to at least one embodiment. The tool body802includes an interfacing profile812that is useful for different fully circumferential tool assemblies. However, the tool body802ofFIG.8Acan also support association of different tool assemblies of a same type to each provided dovetail feature806of the interfacing profile812.FIG.8Aalso illustrates that an interfacing profile of a tool body may be axial that is parallel to an axis of a tool body802or may be circumferential about an axis of the tool body802.

In at least one embodiment, one or more areas810may be provided for a releasable member to be associated with the tool body802. Other types of retention features may be enabled by provided areas808in the tool body802as part of second locks for the tool assembly and the tool body. A shoulder804is also provided on the tool body802for interfacing with a surface868of the fully circumferential tool assemblies or of multiple tool assemblies to be associated together to form a circumferential blade. For example, a sleeve format tool assembly, as illustrated inFIG.9Aand described herein, can have fully circumferential blades in its outer tool profile without a need to associate together different tool assemblies of a same type as inFIGS.6A, B or inFIGS.7A, B.

FIG.8Billustrates further association details850of a tool assembly854, which is in a sleeve format, with a tool body852, such a tool body802ofFIG.8A, for performing downhole run and/or retrieval operations, according to at least one embodiment.FIG.8Billustrates, in a cross-sectional view, a section of an outer tool profile858of multiple blades860on a tool assembly854. The outer tool profile858also includes an area866for a run aspect to be positioned. The run aspect may be WBs or NSPs to be landed by positioning such WBs or NSPs in the area866and releasing it into an appropriate part of the borewell or casing hanger. The tool assembly854is locked in place in its association with the tool body802via one or more releasable members856that is at a first lock and is shown to be within one or more angled indentations in the tool assembly854.

FIG.8Balso illustrates that a bottom surface864of a tool assembly854to form a shoulder-surface interface of the system of the tool assembly854and tool body852. As such, the tool assembly854is a cylindrical feature and not quarter or semi-circumferential sections as inFIGS.6A-7B. Still further,FIG.8Balso illustrates that a distinct releasable member862that may be a J-slot or other release feature or interface can be used instead of a spring-loaded dog. The J-slot will require the cylindrical feature of the tool assembly854to be twisted relative to the tool body so that a pin862C can fit within a slot862A, followed by a spring closure862B that holds the pin862C and the tool assembly in a locked position. Further, the J-slot may be used with the spring-loaded dog, but with the spring-loaded dog providing an axial lock and the tool assembly required to be twisted into the J-slot so that the spring of the J-slot locks at the same time as the spring-loaded dog.

FIG.9Aillustrates alternate details900of a sleeve format tool assembly902, such as fromFIG.8B, for performing downhole run and/or retrieval operations, according to at least one embodiment. The tool assembly902is fitted over a tool body so that its inset dovetail features906forming an inner matching profile can be associated with an interfacing profile of the tool body. The tool assembly902can be changeably associated with the tool body to be used in the downhole run and/or retrieval operations of features.FIG.9Aalso illustrates that the tool assembly902includes an outer tool profile908. An angled indentation may be provided as discussed throughout herein to receive at least one releasable member of a tool body.

FIGS.9B and9Cillustrate disassociation features950,970for a tool assembly and tool body used for performing downhole run and/or retrieval operations, according to at least one embodiment. For example, a tool body952;972includes a pluggable access port954;974. The pluggable access port954,974can receive a plug956for closure of the access port954;974. In at least one embodiment, the plug956is a National Pipe Taper (NPT) plug to isolate the access port. In at least one embodiment, the access port can also receive or include a release tool, such as a release piston. Further, a retainer ring976may be provided to retain the release piston and to allow for downward motion to depress the releasable member980, which can cause the releasable member to release and to enable disassociation of the tool assembly972from a tool body. The head of the plug946may support a wrench of screwdriver interface. A no-go shoulder978may be provided in the tool assembly972to stop the release piston from exiting its placement or to limit its movement.

FIG.10is a flowchart illustrating a method1000associated with a tool assembly and tool body for performing downhole run and/or retrieval operations, according to at least one embodiment. In at least one embodiment, the method1000includes providing (1002) a tool body having an interfacing profile. The providing (1002) aspect may include provisioning of at least one releasable member within the tool body or tool assembly to be used in a downhole environment. The method also includes enabling (1004) a tool assembly to have an outer tool profile and an inner matching profile to be associated with the interfacing profile. Step1004may be performed by selection of a tool assembly or by repairing a tool assembly.

The enabling (1004) aspect may include provisioning of an indentation, such as an angled indentation, to receive at least one releasable member. For example, a spring-loaded dog can form part of at least one releasable member between tool body and the tool assembly so the at least one releasable member engaging or disengaging from the indentation can enable an association or a disassociation between the tool assembly and the tool body. In another example or together with the spring-loaded dog, a J-slot and a spring closure can be provided form part of at least one releasable member between tool body and the tool assembly. The at least one releasable member can enable an association or a disassociation between the tool assembly and the tool body.

A verification step (1006) may be provided to ensure that the tool assembly is sized or dimensioned to the application, such as the downhole environment. Step1004may be otherwise repeated. Step1008may be performed for enabling the inner matching profile to be associated with the interfacing profile to allow axial sliding for a first lock of the tool assembly to the tool body. Step1010may be performed for enabling a second lock at a first shoulder-surface interface between the tool assembly and the tool body. The tool assembly is enabled to be changeably associated with the tool body to use in the downhole environment for the downhole operations, including for run and/or retrieval operations of features. For example, the tool assembly may be push into a landed associated with the tool body and then pulled into a locked association with the tool body by steps1008,1010.

The method1000includes steps or sub-steps for enabling a number of raised or inset dovetail features to form part of the interfacing profile and for enabling a number of matching inset or raised dovetail features to form part of the inner matching profile. Such steps or sub-steps ensure that the tool assembly can be mated with the tool body. The method1000includes steps or sub-steps for enabling a passthrough feature and a shoulder-surface interface with the tool assembly aligned in a locked association with the tool body. This is so that the method1000can then perform part of an association or part of a disassociation between the tool assembly and the tool body using the passthrough feature and the shoulder-surface interface.

The method1000includes steps or sub-steps for enabling a spring-loaded dog to form part of the at least one releasable member. Further, the method1000includes steps or sub-steps for providing a railing feature to form part of the interfacing profile and for providing a seating feature to the railing feature. These steps or sub-steps enable the seating feature to form part of the inner matching profile so that the tool assembly slides over the tool body to be locked in place as part of the association with the tool body.

The method1000includes steps or sub-steps for enabling a pluggable access port of the tool assembly to receive a plug for closure or to receive or to include a release tool to cause the at least one releasable member to release and to enable disassociation of the tool assembly from the tool body. The method1000may apply to a tool assembly that is interchangeable among multiple tool assemblies, where each of the tool assemblies has different circumferential blades and blade types to access inner diameters of boreholes and casing hangers.

It should be appreciated that embodiments herein may utilize one or more values that may be experimentally determined or correlated to certain performance characteristics based on operating conditions under similar or different conditions. The present disclosure described herein, therefore, is well adapted to carry out the objects and attain the ends and advantages mentioned, as well as others inherent therein. While a presently preferred embodiment of the disclosure has been given for purposes of disclosure, numerous changes exist in the details of procedures for accomplishing the desired results. These and other similar modifications will readily suggest themselves to those skilled in the art and are intended to be encompassed within the spirit of the present disclosure disclosed herein and the scope of the appended claims.

While techniques herein may be subject to modifications and alternative constructions, these variations are within spirit of present disclosure. As such, certain illustrated embodiments are shown in drawings and have been described above in detail, but these are not limiting disclosure to specific form or forms disclosed; and instead, cover all modifications, alternative constructions, and equivalents falling within spirit and scope of disclosure, as defined in appended claims.

Terms such as a, an, the, and similar referents, in context of describing disclosed embodiments (especially in context of following claims), are understood to cover both singular and plural, unless otherwise indicated herein or clearly contradicted by context, and not as a definition of a term. Including, having, including, and containing are understood to be open-ended terms (meaning a phrase such as, including, but not limited to) unless otherwise noted. Connected, when unmodified and referring to physical connections, may be understood as partly or wholly contained within, attached to, or joined together, even if there is something intervening.

Recitation of ranges of values herein are merely intended to serve as a shorthand method of referring individually to each separate value falling within range, unless otherwise indicated herein and each separate value is incorporated into specification as if it were individually recited herein. In at least one embodiment, use of a term, such as a set (for a set of items) or subset unless otherwise noted or contradicted by context, is understood to be nonempty collection including one or more members. Further, unless otherwise noted or contradicted by context, term subset of a corresponding set does not necessarily denote a proper subset of corresponding set, but subset and corresponding set may be equal.

Conjunctive language, such as phrases of form, at least one of A, B, and C, or at least one of A, B and C, unless specifically stated otherwise or otherwise clearly contradicted by context, is otherwise understood with context as used in general to present that an item, term, etc., may be either A or B or C, or any nonempty subset of set of A and B and C. In at least one embodiment of a set having three members, conjunctive phrases, such as at least one of A, B, and C and at least one of A, B and C refer to any of following sets: {A}, {B}, {C}, {A, B}, {A, C}, {B, C}, {A, B, C}. Thus, such conjunctive language is not generally intended to imply that certain embodiments require at least one of A, at least one of B and at least one of C each to be present. In addition, unless otherwise noted or contradicted by context, terms such as plurality, indicates a state of being plural (such as, a plurality of items indicates multiple items). In at least one embodiment, a number of items in a plurality is at least two, but can be more when so indicated either explicitly or by context. Further, unless stated otherwise or otherwise clear from context, phrases such as based on means based at least in part on and not based solely on.

In at least one embodiment, even though the above discussion provides at least one embodiment having implementations of described techniques, other architectures may be used to implement described functionality, and are intended to be within scope of this disclosure. In addition, although specific responsibilities may be distributed to components and processes, they are defined above for purposes of discussion, and various functions and responsibilities might be distributed and divided in different ways, depending on circumstances.

In at least one embodiment, although subject matter has been described in language specific to structures and/or methods or processes, it is to be understood that subject matter claimed in appended claims is not limited to specific structures or methods described. Instead, specific structures or methods are disclosed as example forms of how a claim may be implemented.

From all the above, a person of ordinary skill would readily understand that the tool of the present disclosure provides numerous technical and commercial advantages, and can be used in a variety of applications. Various embodiments may be combined or modified based in part on the present disclosure, which is readily understood to support such combination and modifications to achieve the benefits described above.