CN203248074U - Sidetracking well casing windowing whipstock - Google Patents

Sidetracking well casing windowing whipstock Download PDF

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Publication number
CN203248074U
CN203248074U CN 201320260207 CN201320260207U CN203248074U CN 203248074 U CN203248074 U CN 203248074U CN 201320260207 CN201320260207 CN 201320260207 CN 201320260207 U CN201320260207 U CN 201320260207U CN 203248074 U CN203248074 U CN 203248074U
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CN
China
Prior art keywords
slips
whipstock
cone
windowing
setting mechanism
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201320260207
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Chinese (zh)
Inventor
宋新建
秦利民
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KORLA SHENGKE PETROLEUM TECHNOLOGY SERVICE Co Ltd
Original Assignee
KORLA SHENGKE PETROLEUM TECHNOLOGY SERVICE Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by KORLA SHENGKE PETROLEUM TECHNOLOGY SERVICE Co Ltd filed Critical KORLA SHENGKE PETROLEUM TECHNOLOGY SERVICE Co Ltd
Priority to CN 201320260207 priority Critical patent/CN203248074U/en
Application granted granted Critical
Publication of CN203248074U publication Critical patent/CN203248074U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a sidetracking well casing windowing whipstock which is used for underground casing windowing construction. The sidetracking well casing windowing whipstock comprises a pressure transmitting tube, a slant face body and a setting mechanism, wherein the setting mechanism is provided with a lower shell, the pressure transmitting tube is installed in the slant face body, and the two ends of the pressure transmitting tube are in threaded connection with a feeding-in connector and a pestle-shaped body respectively. The upper portion of the slant face body is in threaded connection with the feeding-in connector, the lower portion of the slant face body is welded with the upper portion of the lower shell through the pestle-shaped body, the connecting and centralizing modes of the pressure transmitting tube are changed, the hydraulic pressure transmitting capacity is reliable, and after hanging and setting are carried out on the setting mechanism, the setting mechanism can be conveniently pulled out. Through the improvement of the sidetracking well casing windowing whipstock, the sidetracking well casing windowing whipstock is wide in applied range and can be used in directional wells and horizontal wells. The casing windowing operation can be completed in at most two drilling processes. The windowing success rate is improved, and the economic performance of the sidetracking well casing windowing whipstock is greatly improved.

Description

A kind of sidetracked casing whipstock of windowing
Technical field
The utility model belongs to the downhole tool that oil drilling is used, and a kind of sidetracked casing whipstock of windowing particularly is used for the down-hole casing construction of windowing.
Background technology
In the oil exploration ﹠ development process, because the factor such as stratum or oil reservoir exploitation are exhausted, and the factor such as lower part borehole accident, be the expenses such as top well drilling well and sleeve pipe of saving, need to open a window from sleeve pipe one side and bore again directional well or horizontal well, exploit the oil-gas reservoir of former wellbore.Wherein the process of casing sidetracking and technology are key issues, the activities in past is very complicated, need to remove brill many times, former well need to descend earth anchor, cementing, time to coagulate, sweep cement surface, lower whipstock, change different milling shoe etc., adopted afterwards fluid pressure type to hang whipstock and compound milling shoe, general only need to boring twice can be finished the work of windowing, greatly simplifying and saved the process of windowing and time, is a very large progress.
Although hanging whipstock, present this pressure transmitting type use success rate higher, but, still existing needs improved problem, syndeton such as pressure tube and clinohedral is unreasonable, be connected with bolt with clinohedral by the lock ring that is fixed on the pressure tube, carry on needing when pressure tube withdraws from and cut off the lock ring bolt, just may cause setting mechanism set loosening, to set effect bad, easily cause finally and window unsuccessfully.
Summary of the invention
The purpose of this utility model is to provide a kind of sidetracked casing whipstock of windowing, and changes the connected mode of pressure tube, makes it structure more reasonable, guarantees the success rate that sets and sets effect.
The utility model is achieved in that a kind of sidetracked casing whipstock of windowing comprises pressure tube, clinohedral and setting mechanism, and setting mechanism is provided with lower house; Pressure tube is installed in the clinohedral, two ends respectively with send into joint and pestle shape body is threaded; The top of clinohedral with send into joint screw thread and be connected, the top of its underpart and lower house all welds together by pestle shape body, has changed connection and the righting mode of pressure tube.
Compared with prior art, the utility model has the advantage of the syndeton advantages of simple of pressure tube and clinohedral, easy to install.By pressure tube be connected the mechanism that sends into that joint forms and be connected with clinohedral by screw thread, the pressure transmission ability of its hydraulic pressure is reliable, behind the hanging setting, trips out conveniently.In addition, the utility model has also improved the structure of the slip insert of upper slips and lower slips, make slips to set hanging capacity more reliable.Also improved simultaneously the contact structures of upper cone and lower cone and upper slips and lower slips contact surface, after upper and lower slips was released lower house by upper/lower cone, upper/lower cone was no longer return, and can reach the effect of secondary self-locking.And the interior shape of ball seat improved, improved the sealing effectiveness of steel ball and ball seat, can guarantee the hanging capacity of this whipstock.Range of application through this whipstock of improvement is wider, can be used for directional well and horizontal well.Lower boring twice can be finished the casing sidetracking operation at most.Greatly improved the success rate of windowing, its economic performance is improved greatly, cost of production has declined to a great extent.
Description of drawings
Fig. 1 is the structural representation of first figure of the utility model.
Fig. 2 is the structural representation of second figure of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing in detail the utility model is described in detail, and the related scope of unrestricted the utility model, the utility model separately is plotted as Fig. 1 and Fig. 2 at pestle shape body 4 places.By illustrated in figures 1 and 2, a kind of sidetracked casing whipstock of windowing comprises pressure tube 2, clinohedral 3 and setting mechanism, and setting mechanism is provided with lower house 8.Pressure tube 2 is installed in the clinohedral 3, two ends respectively with send into joint 1 and pestle shape body 4 is threaded; The top of clinohedral 3 is threaded with sending into joint 1, and the top of its underpart and lower house 8 all welds together by pestle shape body 4.Are connected connection and the righting mode that mechanism has changed pressure tube 2 of sending into that forms with pressure tube by sending into joint 1.Clinohedral 3 is cylinders that are provided with centre bore, and the cylinder that its centre bore can just pass pressure tube 2, one sides is provided with the inclined-plane, makes milling tool sleeve pipe be ground a window along its inclined-plane, realizes that sidetracking digs a directional well or the construction of horizontal well.Setting mechanism also is provided with upper slips 5.1, lower slips 5.2, upper cone 9.1 and lower cone 9.2, upper slips 5.1 is all fixing by slips bolt 6 with lower cone 9.2 with upper cone 9.1 and lower slips 5.2, be equipped with sealing ring 7 on upper cone 9.1 and the lower cone 9.2, upper cone 9.1 and lower cone 9.2 are connected to the two ends of stay pipe 10 in opposite directions by screw thread; One end of stay pipe 10 is provided with the pressure transmission groove, and different in size.Upper slips 5.1 and lower slips 5.2, upper cone 9.1 and lower cone 9.2 are upper and lower respectively to be provided with three groups, makes upper slips 5.1 and lower slips 5.2 and the corresponding installation of slip groove on the lower house 8.For alleviating the weight of upper cone 9.1 and lower cone 9.2, at disconnected position punching loss of weight.The slip insert of upper slips 5.1 and lower slips 5.2 is rhombus slip inserts; Upper cone 9.1 and lower cone 9.2 are zigzag taper surfaces with the fitting face of upper slips 5.1 and lower slips 5.2.Pestle shape body 4 is the T-shaped cylinders that are provided with centre bore, and the endoporus of its stub end is provided with screw thread and is connected with pressure tube 2, the bottom of the cylindrical of stub end and clinohedral 3 and the welding of the top of lower house 8; Its little head end is provided with external screw thread and is connected with the top inner hole thread of upper cone 9.1.The lower thread of lower cone 9.2 connects ball seat 12, and the endoporus of ball seat 12 is different diameter holes, and its epimere internal diameter is greater than the hypomere internal diameter, and its stage casing is inner conical surface, by the inner conical surface transition.When steel ball 11 drops into from well head, just in time be landed on this inner conical surface.Lower contact 13 is connected with the lower thread of lower house 8, can protect ball seat 12, and lower house 8 is played the support effect.
When digging a directional well at the well section window sidetracking that sleeve pipe is arranged or during horizontal well, be lowered to first this whipstock, and then lower milling tool grinds a window to sleeve pipe.
During use, the upper end of this whipstock directly is connected with drill collar, instantly get into the precalculated position after, generally to be lowered to gyroscopic instrument with cable its inclined-plane is carried out orientation, take out instrument after directed.Drop into a steel ball 11, build the pressure until steel ball 11 rear turn on pumps in place.Drilling liquid pressure enters in the seal cavity that forms with lower house 8 between upper cone 9.1 and the lower cone 9.2 by the pressure transmission groove of stay pipe 10, makes these two cones be equivalent to two pistons, and both sides push up and down rapidly.Because stay pipe 10 lower ends are provided with the pressure transmission groove, can make diametric(al) have elasticity, make the connecting thread of itself and lower cone 9.2 occur loosening, allow stay pipe 10 from lower cone 9.2, extract a part out, and its underpart screw thread is also in lower cone 9.2, upper cone 9.1 and lower cone 9.2 are cut off six slips bolts 6 simultaneously, and upper slips 5.1 and lower slips 5.2 are released the inwall that tightly chokes the well middle sleeve simultaneously, and upper cone 9.1 and lower cone 9.2 no longer move.After the termination of pumping, the inner hole thread of stay pipe 10 lower thread sections and lower cone 9.2 also has supporting role, reaches the locking of upper slips 5.1 and lower slips 5.2 and sleeve pipe, forms a self-locking; In addition, upper slips 5.1 and lower slips 5.2 back sides cooperate with the zigzag taper surface of upper cone 9.1 and lower cone 9.2, have also prevented both disengagings, form the secondary self-locking.After setting mechanism sit to be hung, the rotation drilling tool was poured out pressure tube 2 and is pulled out of hole, and descended the milling tool milling of windowing again.After window is produced in milling, trip out milling tool, lower steering drilling tool bores directional well or horizontal well.This whipstock is functional, use is simple, safe and reliable, only needs to bore twice just can finish the casing sidetracking task.

Claims (4)

1. sidetracked casing whipstock of windowing comprises pressure tube, clinohedral and setting mechanism, and setting mechanism is provided with lower house, it is characterized in that, pressure tube is installed in the clinohedral, two ends respectively with send into joint and pestle shape body is threaded; The top of clinohedral with send into joint screw thread and be connected, the top of its underpart and lower house all welds together by pestle shape body.
2. a kind of sidetracked casing according to claim 1 whipstock of windowing, it is characterized in that, described setting mechanism also is provided with upper slips, lower slips, upper cone and lower cone, upper slips and upper cone and lower slips and lower cone are all fixed by the slips bolt, and the slip insert of upper slips and lower slips is the rhombus slip insert; The fitting face of upper cone and lower cone and upper slips and lower slips is the zigzag taper surface.
3. a kind of sidetracked casing according to claim 2 whipstock of windowing, it is characterized in that, described pestle shape body is the T-shaped cylinder that is provided with centre bore, and the endoporus of its stub end is provided with screw thread and is connected with pressure tube, the top welding of the cylindrical of stub end and the bottom of clinohedral and lower house; Its little head end is provided with external screw thread and is connected with the top inner hole thread of upper cone.
4. a kind of sidetracked casing according to claim 2 whipstock of windowing is characterized in that, the lower thread of described lower cone connects ball seat, and the endoporus of ball seat is different diameter hole, and its epimere internal diameter is greater than the hypomere internal diameter, and its stage casing is inner conical surface.
CN 201320260207 2013-05-14 2013-05-14 Sidetracking well casing windowing whipstock Expired - Fee Related CN203248074U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320260207 CN203248074U (en) 2013-05-14 2013-05-14 Sidetracking well casing windowing whipstock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320260207 CN203248074U (en) 2013-05-14 2013-05-14 Sidetracking well casing windowing whipstock

Publications (1)

Publication Number Publication Date
CN203248074U true CN203248074U (en) 2013-10-23

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Application Number Title Priority Date Filing Date
CN 201320260207 Expired - Fee Related CN203248074U (en) 2013-05-14 2013-05-14 Sidetracking well casing windowing whipstock

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106930712A (en) * 2017-03-24 2017-07-07 锦州清华机械有限公司 Integrated window-opening side-drilling tool
CN110821433A (en) * 2019-12-27 2020-02-21 胜利油田高原石油装备有限责任公司 Radial windowing and drilling device for underground casing of oil-water well
CN115199228A (en) * 2021-04-12 2022-10-18 江苏油田矿业开发有限公司 Tool for window sidetracking without tripping and casing window sidetracking construction method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106930712A (en) * 2017-03-24 2017-07-07 锦州清华机械有限公司 Integrated window-opening side-drilling tool
CN106930712B (en) * 2017-03-24 2023-05-09 锦州清华机械有限公司 Integrated window sidetracking tool
CN110821433A (en) * 2019-12-27 2020-02-21 胜利油田高原石油装备有限责任公司 Radial windowing and drilling device for underground casing of oil-water well
CN115199228A (en) * 2021-04-12 2022-10-18 江苏油田矿业开发有限公司 Tool for window sidetracking without tripping and casing window sidetracking construction method
CN115199228B (en) * 2021-04-12 2024-03-15 中国石油化工集团有限公司 Drilling-free windowing sidetracking tool and casing windowing sidetracking construction method

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20131023

Termination date: 20140514