Source: http://www.freepatentsonline.com/y2009/0218137.html
Timestamp: 2020-03-29 01:01:11
Document Index: 683101332

Matched Legal Cases: ['art 21', 'art 21', 'arts 52', 'arts 52', '§ 102', '§ 102', '§ 103', '§ 103', '§ 112', '§ 112']

Drilling rig drawworks installation - Donnally, Robert Benjamin
United States Patent Application 20090218137
Donnally, Robert Benjamin (Shanghai, CN)
Ren, Chunqiao (Shanghai, CN)
Mccurdy, Stuart Arthur Lyall (Edmonton, CA)
Liu XI, Lin (Puyang City, CN)
Sheng, Hui Chun (Shanghai, CN)
Yu, Yan (Shanghai, CN)
12/074232
175/424
E21B7/02; E21B41/00
Download PDF 20090218137 PDF help
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National Oilwell Varco (c/o Amerson Law Firm, PLLC 2500 Fondren Road, Suite 220, Houston, TX, 77063, US)
1. A method for installing a drawworks on a drilling rig, the method comprising moving a drawworks on movement apparatus on the ground adjacent a drill floor of a rig, the rig having a substructure and raising apparatus on the substructure, connecting the drawworks to the drill floor, and raising the drill floor with the drawworks thereon using the raising apparatus of the rig substructure.
2. The method of claim 1 wherein the drawworks is rotatably mounted on the movement apparatus, the method further comprising rotating the drawworks with respect to the movement apparatus prior to connecting the drawworks to the drill floor.
3. The method of claim 1 wherein the drawworks has drawworks connection apparatus and the drill floor has drill floor connector structure, the method further comprising raising the drill floor to connectingly engage the drill floor connector structure with the drawworks connection apparatus to connect the drawworks to the drill floor.
4. The method of claim 1 further comprising moving the movement apparatus away from the rig.
5. The method of claim 3 wherein a securement device secures the drawworks to the drill floor, the method further comprising securing the drawworks to the drill floor with the securement device.
6. The method of claim 5 further comprising raising the drill floor with the drawworks thereon to a desired operational height.
7. The method of claim 1 wherein the drill floor has an interior open space into which a movement apparatus is selectively movable with the drawworks thereon, the method further comprising moving the drawworks into the interior open space of the drill floor on the movement apparatus prior to connecting the drawworks to the drill floor.
8. The method of claim 1 wherein the movement apparatus is a truck-trailer combination with the drawworks on a trailer of the truck-trailer combination, the trailer connected to and movable by a truck of the truck-trailer combination.
9. The method of claim 3 wherein the drawworks connection apparatus is hook apparatus for connection to a corresponding pin structure, and the drill floor connector structure includes a corresponding pin structure engagable by the hook apparatus.
10. The method of claim 3 wherein the drawworks is connected to a drawworks skid, the drawworks connection apparatus includes a plurality of lugs spaced-apart on and projecting from the skid, each lug having a lug hole, the drill floor connector structure including a drill floor hole in the drill floor corresponding to each lug hole, the method further comprising connecting the drawworks to the drill floor by emplacing a pin with respect to each lug hole and drill floor hole so that a first portion of the pin is in the lug hole and a second portion of the pin is in the drill floor hole.
11. The method of claim 1 wherein the drawworks includes a skid, the method further comprising connecting the drawworks to the drill floor so that a top of the skid is substantially level with the drill floor.
12. The method of claim 1 wherein the substructure includes extension apparatus extendable to engage the drawworks, the method further comprising extending the substructure extension apparatus from the substructure, and engaging the drawworks with the substructure extension apparatus.
14. A method for installing a drawworks on a drilling rig, the method comprising moving a drawworks on movement apparatus on the ground adjacent a drill floor of a rig, the rig having a substructure and raising apparatus on the substructure, connecting the drawworks to the drill floor, and raising the drill floor with the drawworks thereon using the raising apparatus of the rig substructure, wherein the drawworks has drawworks connection apparatus and the drill floor has drill floor connector structure, the method further comprising raising the drill floor to connectingly engage the drill floor connector structure with the drawworks connection apparatus to connect the drawworks to the drill floor, moving the movement apparatus away from the rig, wherein a securement device secures the drawworks to the drill floor, the method further comprising securing the drawworks to the drill floor with the securement device, raising the drill floor with the drawworks thereon to a desired operational height, and wherein the movement apparatus is a truck-trailer combination with the drawworks on a trailer of the truck-trailer combination, the trailer connected to and movable by a truck of the truck-trailer combination.
15. A method for installing a drawworks on a drilling rig on ground, the method comprising moving a drawworks on movement apparatus on ground adjacent a drill floor of a rig, the rig having a substructure and raising apparatus on the substructure, wherein the drill floor having an interior open space into which a movement apparatus is selectively movable with the drawworks thereon, the method further comprising moving the drawworks into the interior open space of the drill floor on the movement apparatus, and connecting the drawworks to the drill floor.
16. The method of claim 15 further comprising raising the drill floor with the drawworks thereon using the raising apparatus of the rig substructure.
17. The method of claim 15 further comprising the drawworks has drawworks connection apparatus and the drill floor has drill floor connector structure, the method further comprising raising the drill floor to connectingly engage the drill floor connector structure with the drawworks connection apparatus to connect the drawworks to the drill floor.
18. The method of claim 15 wherein a securement device secures the drawworks to the drill floor, the method further comprising securing the drawworks to the drill floor with the securement device.
19. The method of claim 15 wherein the drawworks includes a skid, the method further comprising positioning the drawworks with respect to the drill floor so that a top of the skid is substantially level with the drill floor.
20. A drill floor comprising the drill floor having a floor section with an interior open space into which a movement apparatus is selectively movable with a drawworks thereon, and drill floor connector structure on the drawworks for connection to corresponding connection structure on a drawworks, the drill floor connector structure movable to engage a drawworks connection apparatus to connect a drawworks to the drill floor.
21. A method for installing a rig apparatus on a drilling rig, the method comprising moving a rig apparatus on movement apparatus on the ground adjacent a drill floor of a rig, the rig having a substructure and raising apparatus on the substructure, connecting the rig apparatus to the drill floor, and raising the drill floor with the rig apparatus thereon using the raising apparatus of the rig substructure, wherein the rig apparatus has rig apparatus connection apparatus and the drill floor has drill floor connector structure, the method further comprising raising the drill floor to connectingly engage the drill floor connector structure with the rig apparatus connection apparatus to connect the rig apparatus to the drill floor, moving the movement apparatus away from the rig, wherein a securement device secures the rig apparatus to the drill floor, the method further comprising securing the rig apparatus to the drill floor with the securement device, raising the drill floor with the rig apparatus thereon to a desired operational height, and wherein the movement apparatus is a truck-trailer combination with the rig apparatus on a trailer of the truck-trailer combination, the trailer connected to and movable by a truck of the truck-trailer combination.
Connected to the lower skid 18 are four telescoping beams 21, 22, 23, 24 each with an inner beam part that can be released and extended. FIG. 1C shows the beam 21 with a pin hole 21c, an outer beam part 21a and an inner beam part 21b. For transport, e.g. on a trailer, the inner beam parts are extended so that the drawworks does not rotate.
As shown in FIG. 2F, the truck T backs up the trailer R to the rig 20. The rig 20 has a drill floor 28 and a substructure 26 with pivotable supports 26s that supports and are selectively raised and lowered with the drill floor 28. The trailer R is backed up so that the drawworks 10 is almost flush with the drill floor 28. Using powered hydraulic cylinder apparatuses 29a of the substructure 26, the substructure 26 is raised (see FIG. 2G) until a pin connection 27 of the substructure 26 is received and held in the hook connection 11 of the drawworks 10 (see FIGS. 2G, 2H, 2I). Then, the drawworks is lifted off the truck by the substructure 26 (FIG. 2K).
As shown in FIG. 3A a truck K on the ground D has a trailer C attached thereto with a drawworks 40 on a skid 45 supported on the trailer C. The drawworks 40 has two hook structures 41 with hooks 41a (see FIG. 3E). A substructure 56 has pin connection structures 57 with connection pins 57a (see FIG. 3E) on each of two telescoping beams 52 (one shown, FIG. 3C; the other opposite and spaced-apart from the one shown on the other side of the substructure). The substructure 56 raises and lowers a drill floor 58. The substructure includes a plurality of pivotably connected supports 56s and a substructure raising cylinder assembly 56c.
The truck K moves the drawworks 40 alongside the drill floor 58 (FIG. 3B). Parts 52a of the beams 52 are extended for engagement with the hook structures 41 of the drawworks 40. Hydraulic cylinder apparatuses 53 are used to extend the beam parts 52a.
As shown in FIG. 3D, the substructure 56 is raised by the substructure raising cylinder assembly 56c until the pins 57a of the pin connection structures 57 are moved into the hooks 41a of the hook structures 41.
As shown in FIG. 3F, the substructure 56 is then lowered and pins 57b are inserted into holes in the substructure 56 and holes in the drawworks 40 to pin the substructure 56 to the drawworks 40 (FIG. 3G). To insure that the top of the skid 45 is level with the drill floor 58, the substructure 56 is lowered an appropriate amount. As shown in FIG. 3I, the telescoping beams 52 are retracted by the powered cylinder apparatus 53, bringing the skid 45 flush with the drill floor 58. Once the substructure 56 is connected to the drawworks 40, the substructure 56 is raised to lift the drawworks 40 off the trailer C and the truck K and trailer C are moved away.
The substructure 56 with the drawworks 40 secured thereto is then lowered so that two support legs 55 (one shown in the view in FIGS. 3J, 3K; another not shown spaced-apart from and parallel to the one shown) can be connected to the drawworks skid 45 (FIG. 3J). With the legs 55 connected, the substructure 56 raises the drill floor 58 in the drawworks 40 to a working height (FIG. 3K). Lower ends of the legs 55 are connected to a base 56b of the substructure 56. A BOP beam 56r is connected to the substructure.
FIGS. 5A-5H illustrate a method according to the present invention for installing a drawworks 60 (see FIGS. 4A-4D) on a drill floor 78 of a substructure 76. The drawworks 60 is on a skid 65 and, initially, is supported on a trailer F pulled by a truck V on ground N. The substructure 76 has a base 76b to which are connected powered hydraulic cylinder apparatuses 79a, a mast raising cylinder apparatus 79b, and a plurality of pivotable supports 76s which support a drill floor 78. Bottom ends of the apparatuses 79a and 79b, and of the supports 76s are pivotably connected to the base 76b. Top ends of the apparatus 79a and supports 76s are pivotably connected to the drill floor 78. Pins 77 (as discussed below) are used to pin the drawworks skid 65 to the substructure's drill floor 78. The drill floor 78 has an open space 78s into which a drawworks can be moved and into which a vehicle, e.g. a truck/trailer combination, can move e.g. to move a drawworks into place or any other equipment, structure apparatus, or device.
As shown in FIGS. 5A, 5B, and 5C the truck V moves the drawworks 60 adjacent the substructure 76 and into the space 78s in the drill floor 78. With the drawworks 60 in position, pins 77 are inserted through holes in four drawworks lugs 63 and into corresponding holes 75 in the drill floor 78. Lock pins 79 are installed through a beam 71 of the drill floor 78 into the skid 65. Upon securement of the drawworks 60 to the drill floor 78 (and release from the trailer F), the truck V and trailer F are moved away (FIG. 5J).
The cylinder apparatus 79a (one shown in FIGS. 5B and 5K; another not shown spaced-apart from and parallel to the one shown) then raises the drill floor 78 with the drawworks 60. No crane is used to install the drawworks 60, no cables are connected and winched upwardly for the installation, and the size of the drill floor 78 can be reduced since the drawworks 60 is integrated into and connected to an end of the drill floor 78; the skid 65 continues to support the drawworks following connection to the drill floor 78, and no part of the drill floor is needed beneath the skid 65 for this support.
In conclusion, therefore, it is seen that the present invention and the embodiments disclosed herein and those covered by the appended claims are well adapted to carry out the objectives and obtain the ends set forth. Certain changes can be made in the subject matter without departing from the spirit and the scope of this invention. It is realized that changes are possible within the scope of this invention and it is further intended that each element or step recited in any of the following claims is to be understood as referring to the step literally and/or to all equivalent elements or steps. The following claims are intended to cover the invention as broadly as legally possible in whatever form it may be utilized. The invention claimed herein is new and novel in accordance with 35 U.S.C. § 102 and satisfies the conditions for patentability in § 102. The invention claimed herein is not obvious in accordance with 35 U.S.C. § 103 and satisfies the conditions for patentability in § 103. This specification and the claims that follow are in accordance with all of the requirements of 35 U.S.C. § 112. The inventors may rely on the Doctrine of Equivalents to determine and assess the scope of their invention and of the claims that follow as they may pertain to apparatus not materially departing from, but outside of, the literal scope of the invention as set forth in the following claims. All patents and applications identified herein are incorporated fully herein for all purposes. In the claims, means-plus-function clauses are intended to cover the structures described herein as performing the recited function and not only structural equivalents, but also equivalent structures. Thus, although a nail and a screw may not be structural equivalents in that a nail employs a cylindrical surface to secure wooden parts together, whereas a screw employs a helical surface, in the environment of fastening wooden parts, a nail and a screw may be equivalent structures. It is the express intention of the applicant not to invoke 35 U.S.C. § 112, paragraph 6 for any limitations of any of the claims herein, except for those in which the claim expressly uses the words ‘means for’ together with an associated function. In this patent document, the word “comprising” is used in its non-limiting sense to mean that items following the word are including, but items not specifically mentioned are not excluded. A reference to an element by the indefinite article “a” does not exclude the possibility that more than one of the element is present, unless the context clearly requires that there be one and only one of the elements.
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