Patent Publication Number: US-11655688-B2

Title: Methods and systems for a toe sleeve

Description:
BACKGROUND INFORMATION 
     Field of the Disclosure 
     Examples of the present disclosure relate to toe sleeve, wherein the toe sleeve includes a mechanically driven piston with a force generating device and a rupture disc. 
     Background 
     Hydraulic fracturing is the process of creating cracks or fractures in underground geological formations. After creating the cracks or fractures, a mixture of water, sand, and other chemical additives are pumped into the cracks or fractures to protect the integrity of the geological formation and enhance production of the natural resources. The cracks or fractures are maintained opened by the mixture, allowing the natural resources within the geological formation to flow into a wellbore, where it is collected at the surface. 
     Before the cracks or fractures in the underground formations are created, cement is pumped through casing in order to cement the casing into the wellbore. After cementing, a conduit between the wellbore and the formation must be created/re-opened in order to communication for stimulation and production be achieved. However, it is typically desirable to pressure test the casing prior to creating this conduit. Conventionally, to limit initial communication and allow testing, a toe sleeve with rupture disc is used. However, the rupture discs typically burst before a pressure level required to test the casing. Also, conventional rupture discs only allow for a single pressure cycle. Yet, if leaks are detected during the casing test pressure and the rupture disc breaks, there are no other means to test the casing for leak point identification. 
     Accordingly, needs exist for system and methods for a toe sleeve that is configured to allow communication during a bleed off cycle or allow for multiple testing cycles. 
     SUMMARY 
     Embodiments disclosed herein describe a downhole tool, such as a toe sleeve, that is configured to allow communication between an inner diameter of the tool and an annulus outside of the tool during a bleed off cycle, which occurs after testing the casing. In embodiments, to test the casing, pressure within the inner diameter of the tool may be increased, and during the bleed off cycle the pressure within the inner diameter of the tool may be reduced. 
     The tool may include an outer sidewall with a recess, locking joints, and a port. The tool may also include a sliding sleeve positioned within the outer sidewall, and a force generating device positioned between the outer sidewall and the sliding sleeve. 
     The recess may be an indentation, groove, etc. within an inner circumference of the outer sidewall. The recess may be configured to increase an inner diameter within the outer sidewall. The increase of size of the inner diameter may create a piston area configured to allow the sliding sleeve to move in a first direction within the outer sidewall. 
     The locking joint may be positioned within the piston area, and be an abutment, outcrop, projection, etc. configured to limit the movement of the sliding sleeve within the outer sidewall. 
     The external port may be a hole, passageway, etc. positioned through the outer sidewall. The port may be configured to allow communication between an area outside of the outer sidewall and an area within the inner diameter of the tool. 
     The sliding sleeve may be an inner sleeve configured to move in a first direction and/or a second direction within the tool. The sliding sleeve may be configured to move in a first direction responsive to fluid flowing through the inner diameter of the tool being greater than a pressure threshold, wherein the pressure threshold is associated with a force generated by the force generating member. The sliding sleeve may include an upper piston area, rupture disc, and pressure equalizing hole. 
     The upper piston area may be positioned on a proximal end of the sliding sleeve and may have a larger inner diameter than a lower piston area positioned on a distal end of the sliding sleeve. Due to the difference in sizes of the upper piston area and the lower piston area, the sliding sleeve may be configured to generate sufficient force to move in a first direction within the outer sidewall. The upper piston area may also be configured to interface with the locking joint to limit the movement of the sliding sleeve in the first direction. 
     The rupture disc may be a removable component that is positioned within a disc port positioned through the sliding sleeve. The rupture disc may be configured to rupture, break, fragment, dissolve, be removable, etc. by applying a predetermined pressure across the rupture disc when the rupture disc is aligned with the external port. 
     The pressure equalizing hole may be extended through the sliding sleeve, and may be configured to balance a pressure across the rupture disc between a first surface of the rupture disc facing a central axis of the tool and a second surface of the rupture disc facing an inner diameter of the outer sidewall. The pressure equalizing hole may also be configured to reduce, dampen, etc. a speed of movement of the sliding sleeve in a second direction responsive to reducing pressure within the tool. 
     The force generating device may be a device that is configured to apply an axial force against the sliding sleeve in a second direction, wherein the second direction is an opposite direction than the first direction. The force generating device may be a spring, hydraulic chamber, mechanical membrane, etc. The force generating device may be set such that when the force generating device is compressed then the rupture disc is misaligned with the external port, and when the force generating device is elongated then the rupture disc may be aligned with the external port. 
     These, and other, aspects of the invention will be better appreciated and understood when considered in conjunction with the following description and the accompanying drawings. The following description, while indicating various embodiments of the invention and numerous specific details thereof, is given by way of illustration and not of limitation. Many substitutions, modifications, additions or rearrangements may be made within the scope of the invention, and the invention includes all such substitutions, modifications, additions or rearrangements. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Non-limiting and non-exhaustive embodiments of the present invention are described with reference to the following figures, wherein like reference numerals refer to like parts throughout the various views unless otherwise specified. 
         FIG.  1    depicts a downhole tool, according to an embodiment. 
         FIG.  2    depicts a downhole tool, according to an embodiment. 
         FIG.  3    depicts a downhole tool, according to an embodiment. 
         FIG.  4    depicts a downhole tool, according to an embodiment. 
         FIG.  5    depicts a downhole tool, according to an embodiment. 
         FIG.  6    depicts a downhole tool, according to an embodiment. 
         FIG.  7    depicts a downhole tool, according to an embodiment. 
         FIG.  8    depicts a downhole tool, according to an embodiment. 
         FIG.  9    depicts a downhole tool, according to an embodiment. 
         FIG.  10    depicts a downhole tool, according to an embodiment. 
         FIG.  11    depicts a downhole tool, according to an embodiment. 
         FIG.  12    depicts a downhole tool, according to an embodiment. 
         FIG.  13    depicts a downhole tool, according to an embodiment. 
         FIG.  14    depicts a downhole tool, according to an embodiment. 
     
    
    
     Corresponding reference characters indicate corresponding components throughout the several views of the drawings. Skilled artisans will appreciate that elements in the figures are illustrated for simplicity and clarity and have not necessarily been drawn to scale. For example, the dimensions of some of the elements in the figures may be exaggerated relative to other elements to help improve understanding of various embodiments of the present disclosure. Also, common but well-understood elements that are useful or necessary in a commercially feasible embodiment are often not depicted in order to facilitate a less obstructed view of these various embodiments of the present disclosure. 
     DETAILED DESCRIPTION 
     In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one having ordinary skill in the art that the specific detail need not be employed to practice the present invention. In other instances, well-known materials or methods have not been described in detail in order to avoid obscuring the present invention. 
     Turning now to  FIG.  1   ,  FIG.  1    depicts a downhole tool  100 , according to an embodiment. In embodiments, a wellbore may include a plurality of downhole tools  100 , which may be aligned across their central axis in parallel with one another. The plurality of downhole tools  100  may be aligned such that a first downhole tool  100  is positioned before a second downhole tool  100 . Tool  100  may include an outer sidewall  110 , sliding sleeve  120 , and force generating device  130 . In embodiments, outer sidewall  110  and sliding sleeve  120  may be coupled together via shear screws  102  or any other device that is configured to break responsive to an increase in pressure within tool  100 . This may allow for sliding sleeve  120  to be temporarily coupled to outer sidewall  110  at a first location associated with shear screws  102 . Responsive to shear screws  102  breaking, sliding sleeve  120  may move axially within tool  100 . 
     Outer sidewall  110  may form a hollow chamber, channel, conduit, passageway, etc. across an inner diameter of outer sidewall  110 . Positioned outside outer sidewall  110  may be an annulus between a geological formation and outer sidewall  110 . The hollow chamber within outer sidewall  110  may extend form a top surface of outer sidewall  110  to a lower surface of outer sidewall  110 . Outer sidewall  110  may include recess  112 , locking joints  114 , external port  116 , and ledge  118 . 
     Recess  112  may be an indentation groove, etc. within an inner circumference of outer sidewall  110  extending from the inner circumference of outer sidewall  110  towards the outer circumference of outer sidewall  110 . Recess  112  may be configured to increase an inner diameter across the inner diameter of outer sidewall  110 . Recess  112  may have a larger inner diameter than other areas associated with outer sidewall, except for external port  116 . This may allow change in piston force created on elements aligned with recess  112 . In embodiments, when tool is initially placed within a wellbore, recess  112  may be positioned closer to a proximal end of tool  100  than an upper surface of sliding sleeve  120 , and the upper surface of sliding sleeve  120  may be aligned with a lower surface of recess  112 . 
     Locking joints  114  may extend from recess  112  towards a central axis of tool  110 , which may be utilized to limit the movement of sliding sleeve  120  in a first direction. Responsive to sliding sleeve  120  being positioned adjacent to locking joints  114 , sliding sleeve  120  may no longer be able to move in the first direction towards a distal end of downhole tool  100 . The locking joint  114  maybe a no go shoulder or any other profile that prevents sliding sleeve  120  from moving in the first direction. 
     External port  116  may be a hole, passageway, etc. positioned through outer sidewall  110  from the inner circumference of outer sidewall  110  to the outer circumference of outer sidewall  110 . External port  116  may be configured to allow communication between the hollow chamber within tool  100  to an annulus outside of tool  100 , i.e.: the geological formation. 
     Ledge  118  may be an outcrop, protrusion, etc. configured to extend towards a central axis of tool  100  from the inner circumference of outer sidewall  110 . Ledge  118  may be configured to support a first end of force generating device  130 . 
     Sliding sleeve  120  may be configured to be positioned within outer sidewall  110  and move in a first direction and a second direction based on a pressure within the hollow chamber and the force generated by force generating device  130 . Sliding sleeve  120  may be configured to move in a first direction responsive to applied pressure through the inner diameter of the tool  100  creating a piston force on the sliding sleeve  120  that is greater than the force applied to sliding sleeve  120  by force generating device  130  in a second direction. Sliding sleeve  120  may include upper piston area  122 , locking fingers  124 , rupture disc  126 , and pressure equalizing hole  128 . 
     Upper piston area  122  may be positioned on a proximal end of sliding sleeve  120 . Upper piston area  122  may have a larger diameter and occupy more surface area than a lower piston area  123  positioned on a distal end of sliding sleeve  120 , wherein the lower piston area  123  may be comprised of more than one surface area, wherein the more than one surface area may be positioned at different offsets along a central axis of tool  110 . A first surface of lower piston area  123  may be on the distal most area of sliding sleeve  120  and a second surface of lower piston area  123  may be the area that interacts with force generating device  130 . By upper piston area  122  occupying a larger surface area than lower piston area  123 , upper piston area  122  may be impacted greater than lower piston area  123  by a pressure within tool  100 , which may assist in moving sliding sleeve  120  in a first direction and overcoming a force generated by force generating device  130 . In implementations, before increasing a pressure within tool  100 , upper piston area  122  may be aligned with a lower edge of recess  112 . 
     Locking fingers  124  may be positioned on a lower edge of upper piston area  122 . Locking fingers  124  may be configured to be positioned into a lower cavity within recess  112  and be positioned adjacent to locking joint  114 . Responsive to positioning locking fingers  124  adjacent to or within locking joint  114 , sliding sleeve  120  may not be able to move in the first direction after a certain pre-determined stoke length. 
     Rupture disc  126  may be positioned within an internal port  127 , wherein internal port  127  extends through sliding sleeve  120 . Rupture disc  126  may be configured to be removed, rupture, break, fragment, dissolve, etc. by applying a predetermined pressure across the rupture disc  126 . In embodiments, rupture disc  126  may rupture when rupture disc  126  is aligned with external port  116  based on a pressure differential between a pressure within the hollow chamber in the tool  100  and a pressure in the annulus outside of the tool. 
     Pressure equalizing hole  128  may extend through sliding sleeve  120 , and may be configured to balance a pressure across rupture disc  126  when internal port  127  is not aligned with external port  116 . In embodiments, pressure equalizing hole  128  may be configured to allow a pressure on a first surface of rupture disc  126  to be substantially equal to the pressure on a second surface of rupture disc  126  when internal port  127  is misaligned with external port  116  due to a seal being positioned between the second face of rupture disc  126  and external port  116 . Further, pressure equalizing hole  128  may allow the pressure on the first surface of rupture disc  126  to be different from the pressure on the second surface of rupture disc  126  when internal port  127  is aligned with external port  116 . Additionally, pressure equalizing hole  128  may also be configured to equalize a pressure within a chamber housing force generating device  130  and across the inner diameter of tool  100 . This may reduce, dampen, etc. a speed of movement of sliding sleeve  120  in a second direction when reducing pressure within tool  100 . 
     Force generating device  130  may be a device that is configured to apply an axial force against the sliding sleeve  120  in a second direction, wherein the second direction is an opposite direction than the first direction. Force generating device  130  may be a spring, hydraulic pump, mechanical membrane, etc. Force generating device  130  may be set such that when the force generating device  130  is compressed, rupture disc  126  is misaligned with external port  116 , and when the force generating device  130  is elongated then rupture disc  126  is aligned with external port  116 . In embodiments, force generating device  130  may be configured to be compressed when run in hole, and when sliding sleeve  120  is coupled to outer sidewall  110  via shear screws  102 . Responsive to sliding sleeve  120  being decoupled from outer sidewall  110 , force generating device  130  may be elongated or further compressed. 
     Additionally, seals may be positioned between sliding sleeve  120  and outer sidewall  110 . The seals may be configured to restrict communication across the seals. This may enable equalizing hole  116  to equalize the pressure across rupture disc  126  when rupture disc  126  is not positioned between the seals, and allow for a pressure differential across rupture disc  126  when rupture disc  126  is positioned between the seals. 
       FIG.  2    depicts an embodiment responsive to a first test occurring and fluid is pumped within the inner diameter of tool  100  above a first pressure threshold. Elements depicted in  FIG.  2    may be described above, and for the sake of brevity another description of these elements is omitted. 
     By pumping fluid within the inner diameter of the tool  100  above the first pressure threshold, shear screws  102  may break, allowing sliding sleeve  120  to move in the first direction. 
     As depicted in  FIG.  2   , responsive shear screws  102  breaking and increasing the pressure across upper piston area  122 , sliding sleeve  120  may move in a first direction towards a distal end of tool  100 . The movement of sliding sleeve  120  may be limited by locking fingers  124  interfacing with locking joint  114 . Furthermore, responsive to moving sliding sleeve  120  in the first direction, force generating device  130  may compress. 
     Additionally, the pressure within a chamber housing force generating device  130  and the pressure across rupture disc  126  may be equalized via pressure equalizing hole  128  extending through sliding sleeve  120  into the chamber from the inner diameter of tool  100 . 
       FIG.  3    depicts an embodiment of tool  100  responsive to decreasing the pressure across the inner diameter of tool  100 . Elements depicted in  FIG.  3    may be described above, and for the sake of brevity another description of these elements is omitted. 
     As depicted in  FIG.  3   , responsive to decreasing the pressure across inner diameter of tool  100 , internal port  127  may become aligned with external port  116 . This may be based on mechanical properties of force generating device  130  being configured have a resting state. In the resting state, force generating device  130  may be elongated to a distance to align internal port  127  with external port  116 . Furthermore, the speed at which force generating device  130  transitions from a compressed state to an elongated state may be dampened based on pressure equalizing hole  128  equalizing a pressure within the inner diameter of tool  100  and a chamber housing force generating device  130 . 
     When force generating device  130  is elongated, upper piston area  122  may be aligned with recess  112 . This may eliminate the difference in piston areas  122  and  123  and allow the force generating device  130  to create a higher net positive force which help moving sliding sleeve  120  in the second direction. 
       FIG.  4    depicts an embodiment of tool  100  responsive to decreasing the pressure across the inner diameter of tool  100 . Elements depicted in  FIG.  4    may be described above, and for the sake of brevity another description of these elements is omitted. 
     Responsive to aligning internal port  127  with external port  116 , a pressure differential may be created across rupture disc  126 . The pressure differential may be substantial enough to rupture and remove rupture disc  126  allowing communications from the annulus to the inner diameter of the tool  100 . 
       FIG.  5    depicts a tool  500 , according to an embodiment. Elements depicted in  FIG.  5    may be described above, and for the sake of brevity another description of these elements may be omitted. 
       FIG.  5    may include a metering device  510 . Metering device  510  may be configured to create a chamber  512  above a proximal end of sliding sleeve  120  and recess  122 . Metering device  510  may have a passageway  514  that is configured to extend from the inner diameter of tool  100  to chamber  512 . This may allow pressure within chamber  512  to impact upper piston area  122  via recess  112  to move sliding sleeve  120 . Furthermore, metering device  510  may be configured to limit, reduce, dampen, the movement of sliding sleeve  120  in either the first direction or the second direction based on pressure within inner diameter of tool  100 , the distance across passageway  514 , and the diameter of the inner diameter of tool  100 . 
     Embodiments may also include a seal  520 , barrier, etc. Seal  520  may be configured to limit communication between the inner diameter of the tool  100  and the chamber housing force generating device  130  except for through pressure equalizing hole  128 . Seal  520  may also be configured to limit debris from entering the chamber. 
       FIG.  6    depicts a tool  600 , according to an embodiment. Elements depicted in  FIG.  6    may be described above, and for the sake of brevity another description of these elements may be omitted. 
     Tool  600  may include an inner sidewall  610 , wherein sliding sleeve  120  may be positioned between inner sidewall  610  and outer sidewall  110 . By positioning sliding sleeve  120  between inner sidewall  610  and outer sidewall  110  a pressure differential across rupture disc  126  may remain constant until rupture disc  126  is aligned with, and exposed to, internal sidewall port  630  and external port  116 . This may be due to the surfaces of sliding sleeve  120  and outer sidewall  110  being positioned adjacent to the surfaces of rupture disc  126  to limit the pressure applied to these surfaces of rupture disc  126 . 
     Inner sidewall  610  may include a first passageway  612 , a pressure equalizing port  620 , and an internal sidewall port  630 . The movement of sliding sleeve  120 . Pressure equalizing port  620  may extend through inner sidewall  610  into a chamber housing force generating device  130  and may be configured to be a metering device to limit, reduce, dampen, etc. Pressure equalizing port  620  may also equalize the pressure between the inner diameter of tool  600  and the chamber housing force generating device  130 . By equalizing the pressure as the pressure within the inner diameter is being reduce, the speed at which sliding sleeve  120  moves in the second direction may be dampened. 
       FIG.  7    depicts a tool  700 , according to an embodiment. Elements depicted in  FIG.  7    may be described above, and for the sake of brevity another description of these elements may be omitted. 
     As depicted in  FIG.  7   , a dissolvable shear ring  710 , or any other object, profile, stop, geometry, including pins, screws, bolts, etc. (referred to hereinafter collectively and individually as “shear ring”) may be positioned on a proximal end of sliding sleeve  120  to limit the movement of sliding sleeve  120 . The dissolvable shear ring  710  may be configured to secure sliding sleeve  120  to casing  110  at a predetermined location, which may also secure force generating device  130  in a compressed position. Responsive to exposing dissolvable shear ring  710  to well bore fluid, dissolvable shear ring  710  may begin dissolving. After a predetermined amount of time of the dissolvable shear ring  710  being exposed to the wellbore conditions or due to timing, dissolvable shear ring may no longer couple sliding sleeve  120  to casing at the predetermined location. As such, after the predetermined amount of time, force generating device  130  may elongated, to align the inner port  126  and outer port  116 . 
     However, in a time period from when the dissolvable shear ring  710  is exposed to the wellbore fluid, various testing to casing  110  may occur. For example, tool  700  may be run in hole, cemented, and pressure testing may occur during the predetermined amount of time. 
       FIG.  8    depicts a tool  800 , according to an embodiment. Elements depicted in  FIG.  8    may be described above, and for the sake of brevity another description of these elements may be omitted. Tool  800  may include casing  810 , sliding sleeve  820 , force generating device  830 , and burst disc  840 . 
     Casing  810  may include an external port  812  and through port  814  that are configured to extend through casing  810 . External port  812  may include a first burst disc that is configured to be removable during a bleed of a cycle. In embodiments, external port  812  may be covered by sliding sleeve  820  in a first mode, and external port  812  may be aligned with an internal port  822  within sliding sleeve  820  in a second mode. Through port  814  may be configured to be positioned through casing  810 . Through port  814  may be positioned below a distal end of sliding sleeve  820 . In embodiments, through port  814  may have a larger diameter than external port, and may include a second burst disc. The second burst disc may be configured to rupture based on a pressure differential across the second burst disc or after a predetermined amount of time. In embodiments, a shear screw  821 , or other coupling mechanism may be configured to temporarily couple casing  810  and sliding sleeve  820 . Responsive to a pressure differential between the inner diameter of tool  800  and an annulus outside of casing  810  being above a predetermined threshold, the shear screw  821  may break. This may allow for the axial movement of sliding sleeve  820  within casing  810 . 
     Sliding sleeve  820  may be positioned on an inner diameter of casing  110 , and may be configured to slide axially within casing  110 . Sliding sleeve  820  may slide within casing  110  based on forces received from force generating device  130  and pressure within an inner diameter of casing  110 . 
     Sliding sleeve  820  may have an internal port  822 , seat  824 , and piston  850 ,  852 . Internal port  822  may extend through sliding sleeve  820 . Internal port  822  may be configured to align with external port  812  in the second mode, and be misaligned with external port  812  in the first mode. In the second mode, an annulus between casing  810  and the inner diameter of tool  800  may be in communication to have an equalized pressure. A proximal end of sliding sleeve  120  may have a first piston area  850 , and a distal end of sliding sleeve  120  may have a second piston area  852 , wherein first piston area  850  and second piston area  852  may be balanced. 
     Seat  824  may be positioned on an inner diameter of sliding sleeve  120 , reduce the inner diameter across tool  800 , and may be configured to receive a ball, or any other object, dropped within the inner diameter of tool  800 . Responsive to positioning a ball or any other object on seat  824 , a piston area on the distal end of sliding sleeve  120  may be greater than that on the proximal end of sliding sleeve  120 , which may allow sliding sleeve  120  to move axially within casing  810 . In embodiments, seat  824  may be an expandable seat with a variable inner diameter. In the first mode, the inner diameter of seat  824  may have a first diameter that is smaller than that of the ball. In the second mode, the inner diameter of seat  824  may expand to a second diameter, which is great than that of the ball. This may allow the ball to pass through seat  824  when in the second mode. 
     Force generating device  830  may be a device that is configured to apply an axial force against sliding sleeve  820 . Force generating device may be positioned between a projection  832  extending from casing  810  towards a central axis of tool, and a shelf  834  positioned on seat  824 . In embodiments, force generating device  830  may be configured to rest on projection  832  and apply an expansive force towards the proximal end of sliding sleeve responsive to shear screw  821  breaking. 
     Accordingly, tool  800  may allow a burst disc  814  to be directly mounted in the casing  810 . At a first pressure cycle, the casing  810  may be partially tested for cracks, leaks, etc. Responsive to increasing the pressure within the inner diameter of tool  810 , burst disc  814  may be dissolved, shear, etc. and allow communication between the annulus and inner diameter of tool  800  at a location below seat  824 . 
     Responsive to a ball being positioned on seat  824 , the inner diameter of tool  800  may be partitioned into multiple zones, a first zone positioned between the ball and a proximal end of tool  800  and a second zone positioned between the ball and a distal end of tool  800 . In embodiments, the second zone may be in communication with the annulus via the port that previously held burst disc  814 . Once the ball is positioned on seat  824 , pressure within the first zone may be increased, shearing shear screw  821  and allowing force generating device  830  to compress and move sliding sleeve  820  towards the distal end of tool  800 . This may allow the casing to be tested. Responsive to bleeding off the pressure in the first zone, pressures in the first zone and the second zone may be equal, where the only net force applied to sliding sleeve  120  being received from force generating device  830 . This may cause sliding sleeve  820  to move to the second mode, where external port  812  and internal port  822  are aligned. 
       FIG.  9    depicts a tool  800 , according to an embodiment. Elements depicted in  FIG.  9    may be described above, and for the sake of brevity another description of these elements may be omitted. 
     As depicted in  FIG.  9   , after a predetermined amount of time or creating a pressure differential across burst disc  814 , burst disc  814  may be removed. This may expose lower port  910  positioned below sliding sleeve  120 . 
       FIG.  10    depicts a tool  800 , according to an embodiment. Elements depicted in  FIG.  10    may be described above, and for the sake of brevity another description of these elements may be omitted. 
     As depicted in  FIG.  10   , a ball  1010  may be positioned on seat  824  and fluid may flow through the inner diameter of tool  800  above ball  1010 , and partition the inner diameter into two zones. A first zone may be positioned above ball  1010 , and a second zone may be positioned below ball  1010 . Ball  1010  isolating the first zone from the second zone may allow the pressure acting upon sliding sleeve  820  towards the distal end of tool  800  to increase, which may break shear screw  821 . Responsive to shear screw  821  breaking, sliding sleeve  820  may move towards the distal end of tool  800 , and allow for the testing of casing. 
       FIG.  11    depicts a tool  800 , according to an embodiment. Elements depicted in  FIG.  11    may be described above, and for the sake of brevity another description of these elements may be omitted. 
     As depicted in  FIG.  11   , responsive to bleeding off the pressure in tool  800 , f the pressure in the first zone and the second zone acting upon sliding sleeve  820  may equalize allowing force generating device  830  to contract. This may cause sliding sleeve  820  to move towards the proximal end of tool  800 , which may align internal port  822  and external port  812 . 
       FIG.  12    depicts a tool  1200 , according to an embodiment. Elements depicted in  FIG.  12    may be described above, and for the sake of brevity another description of these elements may be omitted. 
     As depicted in  FIG.  12   , neither sliding sleeve  1220  nor casing  1210  may include an exterior port or an exterior port. However, there may be a recess  1212  between sliding sleeve  1220  and casing  1210 , wherein ball seat  1230  may expand into when sliding sleeve  1220  is in the second mode. This may allow for communication between the inner diameter of tool  1200  and an annulus at a position below sliding sleeve  1220 . 
     Further rupture disc  810  may not be broken when being run in the well. This may allow a balanced piston between a proximal end of sliding sleeve  1220  and a distal end of sliding sleeve positioned in recess  1212 . 
       FIG.  13    depicts a tool  1200 , according to an embodiment. Elements depicted in  FIG.  13    may be described above, and for the sake of brevity another description of these elements may be omitted. 
     As depicted in  FIG.  13   , the disc may have been ruptured exposing port  1310  that extends through the casing  1210  at a location below expandable ball seat  1230 . 
     Responsive to positioning a ball  1230  on expandable seat  1230 , sliding sleeve  1210  may move towards the distal end of tool  1200 , while expandable seat  1230  remains axially static within tool  1200 . As there are no ports through sliding sleeve  1220  or casing  1210 , casing  1210  may be pressurized as long as desired. 
       FIG.  14    depicts a tool  1200 , according to an embodiment. Elements depicted in  FIG.  14    may be described above, and for the sake of brevity another description of these elements may be omitted. 
     As depicted in  FIG.  14   , responsive to bleeding pressure off ball  1300 , force generating device  1410  may compress moving sliding sleeve  1220  towards the proximal end of tool  1200 . This may expose recess  1212  to expandable seat  1230 , and allow expandable seat  1230  to move radially within recess  1212 , and increase the inner diameter of expandable seat  1230  to a length that is greater than the diameter of ball  1300 . When the size of the inner diameter of expandable seat  1230  is greater than than that of ball  1300 , ball  1300  may move towards the distal end of tool  1200 , which may allow communication through the inner diameter of tool through port  1310 . 
     Reference throughout this specification to “one embodiment”, “an embodiment”, “one example” or “an example” means that a particular feature, structure or characteristic described in connection with the embodiment or example is included in at least one embodiment of the present invention. Thus, appearances of the phrases “in one embodiment”, “in an embodiment”, “one example” or “an example” in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures or characteristics may be combined in any suitable combinations and/or sub-combinations in one or more embodiments or examples. In addition, it is appreciated that the figures provided herewith are for explanation purposes to persons ordinarily skilled in the art and that the drawings are not necessarily drawn to scale. 
     Although the present technology has been described in detail for the purpose of illustration based on what is currently considered to be the most practical and preferred implementations, it is to be understood that such detail is solely for that purpose and that the technology is not limited to the disclosed implementations, but, on the contrary, is intended to cover modifications and equivalent arrangements that are within the spirit and scope of the appended claims. For example, it is to be understood that the present technology contemplates that, to the extent possible, one or more features of any implementation can be combined with one or more features of any other implementation.