CN202417310U - Hollow whipstock for sidetrack drilling of branch wells - Google Patents
Hollow whipstock for sidetrack drilling of branch wells Download PDFInfo
- Publication number
- CN202417310U CN202417310U CN2011205613901U CN201120561390U CN202417310U CN 202417310 U CN202417310 U CN 202417310U CN 2011205613901 U CN2011205613901 U CN 2011205613901U CN 201120561390 U CN201120561390 U CN 201120561390U CN 202417310 U CN202417310 U CN 202417310U
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- whipstock
- seat
- hollow whipstock
- piston
- multilateral wells
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Abstract
The utility model relates to a hollow whipstock for sidetrack drilling of branch wells. The hollow whipstock comprises a setting portion, a guiding portion and a positioning portion, and is characterized in that the upper portion of the setting portion is connected with a drill rod, the lower portion of the setting portion is connected with the guiding portion through a shear pin, the guiding portion is connected with a butt-joint cylinder of the positioning portion and locked by nuts, and the lower portion is in a hollow structure. The hollow whipstock has the advantages that the hollow whipstock can be matched with the sidetrack drilling tools of the branch wells to be used; when a main well hole is needed to be drilled through after the branch well completes the operation of fixing a well, a pipe column can be placed down into the main well hole again, and tools of the whipstock which are already in the well and the like are not needed to be raised out of the well hole repeatedly, accordingly, a great amount of time used for the late operation of conventional sidetrack drilling is saved, technical bottlenecks existing in the conventional sidetrack drilling technology and tools are positively and effectively solved and avoided, operation is simple, and work safety is reliable in the sidetrack drilling operation. Further, the hollow whipstock is low in manufacturing cost, so that the hollow whipstock is helpful for large-scale application in drilled well operation sites.
Description
Technical field
The utility model belongs to the oil field development production technical field, particularly relates to a kind of Multilateral Wells window sidetracking and uses hollow whipstock.
Background technology
Large-scale development along with oil gas field; There are a large amount of new wells or old well to need window sidetracking to improve output; Especially the Multilateral Wells technology of rise in recent years is the drilling well new technology that after directional well, sidetracked hole, horizontal well technology, grows up, and this technology increases drainage area through in a well, getting out several wells; Improve oil well output, reduce the oil reservoir development cost.
At present; What window sidetracking generally used is the solid instrument that reenters, and its lower end is the docking structure with detent mechanism, but the whipstock of upper end partly is a solid construction; Again with after detent mechanism docks; Can't link up main borehole again, can only utilize the side well of new brill to carry out operation and subsequent production operation, waste oil field production capacity greatly.And the instruments such as whipstock that in operation process, need to go into well propose well repeatedly, complex operation, have influenced conventional window sidetracking later stage operating efficiency, and because above-mentioned hollow whipstock can't reclaim, and then have increased operating cost.External like product costs an arm and a leg, and has the part technology barriers, is unfavorable for the large-scale application that domestic brill completion practice is on-the-spot.
Summary of the invention
The utility model provides a kind of Multilateral Wells window sidetracking to use hollow whipstock for solving the technical problem that exists in the known technology.After the hollow whipstock of the utility model design more helps the solid completion practice of Multilateral Wells; Heavy running string is to main borehole when needing to continue to link up main borehole; The instruments such as whipstock that do not need to go into well propose well repeatedly; Saved the plenty of time and the cost of conventional window sidetracking later stage operation, and this hollow whipstock easy operating, be convenient to reclaim.
The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is:
The Multilateral Wells window sidetracking is used hollow whipstock; Comprise and be lowered to part, targeting part and localization part; It is characterized in that: the running partly is the top jointed rod, is lowered to the part bottom and is connected with targeting part through shear pin, and said targeting part is connected extend neck with localization part; And through nut check, the running partly is a hollow-core construction.
The utility model can also adopt following technical scheme:
The running partly comprises: top connection, hollow piston axle, be sleeved on hollow piston axle outside piston, ball seat, lower contact and cleaning hose; Said the axis of the piston is connected with top connection; In the axis of the piston, be fixed with ball seat through shear pin; The axis of the piston bottom is connected lower contact through key with steady pin, is shaped on fluid circulation channel in the said lower contact, and through the cleaning hose that is threaded.
Be shaped on Y shape fluid circulation channel in the said lower contact, said Y shape fluid circulation channel is communicated with cleaning hose.
Said targeting part comprises: wedge body, swash plate, backplate, self closing ball-and-seat and righting board; Said wedge body connects the piston that is lowered to part through the shear pin of slipping out of the hand; Connect backplate and righting board through securing member on the wedge body; Full weld connects the self closing ball-and-seat in the wedge body, and said cleaning hose passes the self closing ball-and-seat, seals through the O RunddichtringO between cleaning hose and the self closing ball-and-seat.
Said wedge body top is connected through complete all full welds with swash plate, and the crack is provided with the O RunddichtringO between wedge body and the swash plate.
Be distributed with righting board on the said wedge body circumference, in the said righting board indicator be housed.
Said self closing ball-and-seat comprises: valve plate, valve seat, torsion spring and bearing pin, and said bearing pin passes valve plate, torsion spring, and the bearing pin two ends pass valve seat and fix with it, and valve plate rotates around valve seat through bearing pin, on valve seat and valve plate, is equipped with the crush seal conical surface.
Be shaped on locating slot and reentry instrument guiding surface on the said backplate.
Said localization part comprises jump ring, to extend neck and locking nut, said extend neck top is threaded with the wedge body of targeting part, on to extend neck, be shaped on the jump ring groove, be connected with in the jump ring groove and be shaped on the jump ring that imports inclined-plane and axially-movable step on it.
Advantage and the good effect that the utlity model has are: because the utility model adopts technique scheme; The cyclic flusher device that the self closing ball-and-seat can cooperate running tool is installed on hollow whipstock; And key technology such as automatic guide retaining mechanism, guaranteed that hollow whipstock is sent into smoothly exactly to put in place; Have simultaneously that important mechanism such as finger righting board that cover mills Presentation Function have guaranteed follow-uply to be lowered to drilling liner cementing, completion practice, main borehole links up operation and hollow whipstock reclaims efficiently carrying out in order of operation; This hollow whipstock and Multilateral Wells window sidetracking instrument can supportingly use; After helping the solid completion practice of Multilateral Wells, heavy running string need not instruments such as going into the well whipstock is proposed well repeatedly to main borehole when needing to continue to link up main borehole; Saved the plenty of time of conventional window sidetracking later stage operation; The technical bottleneck that actively solves and avoided conventional window sidetracking technology and instrument to exist effectively, easy and simple to handle in the window sidetracking operation, and safe and reliable.In addition, this hollow whipstock manufacturing cost is lower, so help boring the on-the-spot large-scale application of completion practice.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the A portion enlarged drawing of Fig. 1;
Fig. 3 is the B portion enlarged drawing of Fig. 1.
Among the figure: 1, top connection; 2, the axis of the piston; 3, piston; 4, O RunddichtringO; 5, O RunddichtringO; 6, O RunddichtringO; 7, ball seat; 8, shear pin; 9, backplate; 10, the shear pin of slipping out of the hand; 11, lower contact; 11-1, fluid circulation channel; 12, swash plate; 13, wedge body; 14, screw; 15, righting board; 16, locking nut; 17, O circle; 18, to extend neck; 18-1, jump ring groove; 19, jump ring; 19-1, importing inclined-plane; 20, valve plate; 21, valve seat; 22, torsion spring; 23, bearing pin; 24, cleaning hose; 25, O RunddichtringO.
The specific embodiment
For further understanding utility model content, characteristics and the effect of the utility model, the following examples of giving an example now, and conjunction with figs. specifies as follows:
See also Fig. 1-Fig. 3; The Multilateral Wells window sidetracking is used hollow whipstock, comprises being lowered to part, targeting part and localization part the top jointed rod of the running part; Being lowered to the part bottom is connected with targeting part through shear pin; Said targeting part is connected extend neck 18 with localization part, and through nut 16 lockings, the running partly is a hollow-core construction.
The running partly comprises: top connection 1, hollow piston axle 2, be sleeved on hollow piston axle outside piston 3, ball seat 7, lower contact 11 and cleaning hose 24, the axis of the piston seals with piston by adopting O RunddichtringO 4 and O RunddichtringO 5.Said the axis of the piston is threaded with top connection, in the axis of the piston, is fixed with ball seat 7 through shear pin 8, and ball seat and the axis of the piston are through 6 sealings of O RunddichtringO.The axis of the piston bottom is connected lower contact 11 through key with steady pin, be shaped on fluid circulation channel 11-1 in the said lower contact, and through the cleaning hose 24 that is threaded.In the present embodiment, the fluid circulation channel 11-1 in the said lower contact 11 is preferably Y shape fluid circulation channel, and said Y shape fluid circulation channel is communicated with cleaning hose 24.
Said targeting part comprises: wedge body 13, swash plate 12, backplate 9, self closing ball-and-seat and righting board 15; Said wedge body connects the piston 3 that is lowered to part through the shear pin 10 of slipping out of the hand, and the said shear pin 10 of slipping out of the hand is the face of cylinder that the is threaded tightening shear pin of slipping out of the hand.On the wedge body, be connected with backplate 9 and righting board 15 through securing member; In the present embodiment, said securing member is a screw 14, on backplate 9, is shaped on locating slot and reentry instrument guiding surface; Be distributed with righting board 15 on the circumference of said wedge body; Indicator is housed in righting board, and said indicator needs to link up when the main borehole cover mills operation and can play good indicative function after the branch well drilling completion practice finishes.Full weld connects the self closing ball-and-seat in the wedge body, and said cleaning hose passes the self closing ball-and-seat, and through 25 sealings of O RunddichtringO, in the present embodiment, said wedge body top is connected through complete all full welds with swash plate 12 between cleaning hose and the self closing ball-and-seat.Said self closing ball-and-seat comprises: valve plate 20, valve seat 21, torsion spring 22 and bearing pin 23; Said bearing pin passes valve plate, torsion spring; And the bearing pin two ends are passed valve seat and are fixed with it, and valve plate rotates around valve seat through bearing pin, on valve seat and valve plate, are equipped with the crush seal conical surface.
Said localization part comprises jump ring 19, to extend neck 18 and locking nut 16; Said extend neck top is threaded with the wedge body 13 of targeting part; On to extend neck 18, be shaped on jump ring groove 18-1, be connected with in the jump ring groove and be shaped on the jump ring 19 that imports inclined-plane 19-1 and axially-movable step on it.Extend neck top is threaded with the wedge body of targeting part; And through 17 sealings of O RunddichtringO; Tighten locking nut 16 after the inclined-plane of adjustment wedge body and the locating slot angle, the extend neck bottom is docked with the grappling head in Multilateral Wells window sidetracking reentry field in operation extend neck.
Adopt the method for operating of above-mentioned Multilateral Wells window sidetracking hollow guide device:
See also Fig. 1,
The top connection button-type of the utility model instrument is API standard button-type, is convenient to like this and being connected of other instruments such as the standard drilling rod of operation field or drill collar.
Send into this hollow whipstock with drilling rod and put in place, tubing string is lowered into the reservation degree of depth, record put-on and delegated suspending weight successfully inserts the grappling head in order to the jump ring 19 of accurately judging localization part.Turn on pump circulation in the tubing string, the grappling head of flushing Multilateral Wells window sidetracking reentry detent mechanism, cyclic flusher is clean; Make things convenient for the accurate connection of localization part, circulation is returned out clean continued and is lowered to, and presses down certain tonnage after putting in place; Guarantee that jump ring 19 inserts the grappling head smoothly; Carry certain tonnage then, it is also stuck in the jump ring groove of grappling head to guarantee that jump ring 19 has got into, shows the butt joint completion.
After butt joint was accomplished, pitching in tubing string built the pressure to 7-10MPa after release puts in place; In the present embodiment; Be when pitching is suppressed to 9Mpa in the tubing string, because piston 3 inside and outside differential pressures make piston stroking upward, the axis of the piston 2 is hung by drilling rod; The feasible shear pin 10 of slipping out of the hand is sheared in the drawing process of piston and the axis of the piston smoothly, successfully slips out of the hand.
After slipping out of the hand,, continue to suppress to 13-18MPa in the tubing string in order to set up fluid passage inside and outside the tubing string; In the present embodiment, in tubing string, suppress to 15MPa, shear pin 8 is sheared; Shear the ball seat that is positioned at the axis of the piston smoothly, ball seat 7 is fallen in the lower contact 11, promptly set up the inside and outside circulation canal of tubing string; The inside and outside fluid of conducting tubing string is set up circulation.Trip out smoothly subsequently and be lowered to tools section.Next can begin Multilateral Wells and be lowered to operations such as drilling liner cementing, completion, last, for subsequent job requires to link up main borehole, can be lowered to oriented perforating instrument or corresponding brill miller tool, swash plate is destroyed get through, realize the communication of main borehole.
Trip out running string at last, prepare next step underground work.
Claims (9)
1. a Multilateral Wells window sidetracking is used hollow whipstock; Comprise and be lowered to part, targeting part and localization part; It is characterized in that: the running partly is the top jointed rod, is lowered to the part bottom and is connected with targeting part through shear pin, and said targeting part is connected extend neck with localization part; And through nut check, the running partly is a hollow-core construction.
2. Multilateral Wells window sidetracking according to claim 1 is used hollow whipstock; It is characterized in that: the running partly comprises: top connection, hollow piston axle, be sleeved on hollow piston axle outside piston, ball seat, lower contact and cleaning hose; Said the axis of the piston is connected with top connection, in the axis of the piston, is fixed with ball seat through shear pin, and the axis of the piston bottom is connected lower contact through key with steady pin; Be shaped on fluid circulation channel in the said lower contact, and through the cleaning hose that is threaded.
3. Multilateral Wells window sidetracking according to claim 2 is used hollow whipstock, it is characterized in that: be shaped on Y shape fluid circulation channel in the said lower contact, said Y shape fluid circulation channel is communicated with cleaning hose.
4. Multilateral Wells window sidetracking according to claim 1 is used hollow whipstock; It is characterized in that: said targeting part comprises: wedge body, swash plate, backplate, self closing ball-and-seat and righting board; Said wedge body connects the piston that is lowered to part through the shear pin of slipping out of the hand; Connect backplate and righting board through securing member on the wedge body; Full weld connects the self closing ball-and-seat in the wedge body, and said cleaning hose passes the self closing ball-and-seat, seals through the O RunddichtringO between cleaning hose and the self closing ball-and-seat.
5. Multilateral Wells window sidetracking according to claim 4 is used hollow whipstock, it is characterized in that: said wedge body top is connected through complete all full welds with swash plate.
6. Multilateral Wells window sidetracking according to claim 5 is used hollow whipstock, it is characterized in that: be distributed with righting board on the said wedge body circumference, in the said righting board indicator be housed.
7. Multilateral Wells window sidetracking according to claim 4 is used hollow whipstock; It is characterized in that: said self closing ball-and-seat comprises: valve plate, valve seat, torsion spring and bearing pin; Said bearing pin passes valve plate, torsion spring; And valve seat and fixing is passed at two ends, and valve plate rotates around valve seat through bearing pin, on valve seat and valve plate, is equipped with the crush seal conical surface.
8. Multilateral Wells window sidetracking according to claim 4 is used hollow whipstock, it is characterized in that: be shaped on locating slot and reentry instrument guiding surface on the said backplate.
9. Multilateral Wells window sidetracking according to claim 1 is used hollow whipstock; It is characterized in that: said localization part comprises jump ring, to extend neck and locking nut; Said extend neck top is threaded with the wedge body of targeting part; On to extend neck, be shaped on the jump ring groove, be connected with in the jump ring groove and be shaped on the jump ring that imports inclined-plane and axially-movable step on it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205613901U CN202417310U (en) | 2011-12-29 | 2011-12-29 | Hollow whipstock for sidetrack drilling of branch wells |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205613901U CN202417310U (en) | 2011-12-29 | 2011-12-29 | Hollow whipstock for sidetrack drilling of branch wells |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202417310U true CN202417310U (en) | 2012-09-05 |
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ID=46742083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205613901U Expired - Fee Related CN202417310U (en) | 2011-12-29 | 2011-12-29 | Hollow whipstock for sidetrack drilling of branch wells |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202417310U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418478A (en) * | 2011-12-29 | 2012-04-18 | 中国海洋石油总公司 | Hollow whipstock for windowing and side drilling of branched well |
-
2011
- 2011-12-29 CN CN2011205613901U patent/CN202417310U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418478A (en) * | 2011-12-29 | 2012-04-18 | 中国海洋石油总公司 | Hollow whipstock for windowing and side drilling of branched well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161220 Address after: 100010 Beijing city Dongcheng District Dongzhimen Street No. 6 Patentee after: CNOOC Energy Technology Co., Ltd. Address before: 100010 Dongcheng District, Chaoyangmen, North Street, No. 25, ocean Oil Mansion, No. Patentee before: China National Offshore Oil Corporation Patentee before: CNOOC Energy Technology Co., Ltd. Patentee before: CNOOC Energy Technology & Sevices-Supervision &Technology Co. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20181229 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |