CN100441829C - Slant device capable of recovering and fishing tool thereof - Google Patents
Slant device capable of recovering and fishing tool thereof Download PDFInfo
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- CN100441829C CN100441829C CNB2005101352615A CN200510135261A CN100441829C CN 100441829 C CN100441829 C CN 100441829C CN B2005101352615 A CNB2005101352615 A CN B2005101352615A CN 200510135261 A CN200510135261 A CN 200510135261A CN 100441829 C CN100441829 C CN 100441829C
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- whipstock
- fishing
- cup
- salvage
- main body
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Abstract
The present invention relates to a recoverable inclined device which comprises a main body, wherein the main body comprises an upper main body and a lower main body which are fixedly connected, and the connection part of the upper main body and the lower main body is sheathed with a salvage cup, the mouth of which faces the upper main body; the upper main body is provided with a connection part which is connected with a drill rod and a salvage tank which is arranged between the connection part and the salvage cup; the lower main body is provided with a guiding inclined surface, an elastic element is arranged above the guiding inclined surface, and a guiding key which is used for positioning directions is arranged below the guiding inclined surface. The salvage tool for the inclined device comprises a salvage rod and a salvage hook, wherein the salvage hook is fixedly connected with the salvage rod in an inclined mode, the upper part of the salvage rod is provided with a connection end which is movably connected with the drill rod, and the connection end is also provided with a nozzle to speed up fluid flow.
Description
Technical field
The present invention relates to field of oil drilling, refer in particular to whipstock and fishing tool thereof in the multilateral well window sidetracking construction that is mainly used in oil drilling.
Background technology
At present, in drillng operation, the Multilateral Wells instrument is absolutely necessary in carrying out the construction of multilateral well window sidetracking, and can whipstock salvage recovery smoothly, concerns the success or failure of Multilateral Wells well operations and the length of duty cycle.Currently used whipstock and fishing tool all occur less than very reliable product, and in the Multilateral Wells operation, in case whipstock can not be salvaged recovery smoothly, must cause main borehole to be communicated with.Method commonly used is executed and is adopted the milling whipstock, but this operation often will face length consuming time, the problem that has a big risk.In case whipstock reclaims or the milling failure, then will cause scrapping of whipstock lower part borehole, economic loss is huge.And because the weight of whipstock own is lighter, it is infeasible adopting and judging whether to salvage successful method by the rig weight indicator.
Be to need to adopt whipstock to position in the prior art, but existing whipstock is generally compound whipstock of mechanical type and band dispenser formula whipstock, but these two kinds of whipstocks structurally all are at front end a straight inclined-plane to be set, in actual use, although can improve the speed of windowing, preferably PDC drill bit and drilling parameter improve rate of penetration.But scurry the function imperfection on these two kinds of whipstocks, can not realize reliable location.
After whipstock positions, when adopting fishing tool to salvage, generally also need gyro interception down, with the direction of definite recovery hook and the direction uniformity of the salvaging groove on the whipstock, because the existence of measure error, the situation of salvaging failure often takes place, and this also can cause scrapping of whipstock lower part borehole, produces enormous economic loss.
Summary of the invention
It is inaccurate and salvage insecure technical problem that the present invention solves the whipstock location of prior art, the purpose of oblique locator provided by the invention and fishing tool thereof is, improve the accurate positioning of whipstock and the salvaging reliability of fishing tool, and this whipstock has recuperability, from having saved cost of production to a great extent.
The object of the present invention is achieved like this:
A kind of recoverable whipstock, comprise main body, it is characterized in that, described main body comprises upper body and following body, both are fixedly connected, the sheathed fishing cup in junction of upper body and following body, the rim of a cup of fishing cup is towards upper body, have the connecting portion that is connected with drilling rod on the described upper body and be located at connecting portion and fishing cup between the salvaging groove, described body down has a guiding surface, the top of guiding surface is provided with a flexible member, and the below of described guiding surface is provided with the feather key of direction location.
Described upper body adopts with following body and is threaded, and is used for regulating the orientation on the inclined-plane of whipstock.
Described upper and lower body junction is provided with reverse thread, makes the connection of going up lower body keep fastening by the position of regulating fishing cup.
The connecting portion of described upper body adopts pin to be connected with drilling rod.
Described salvaging groove is the dovetail groove shape.
Described fishing cup is made up of metal lining and rubber cup, and rubber cup is solidificated in outside the metal lining.
Described guiding surface is screw inclined plane or curve slope.
Described flexible member is the bullet piece, and this bullet piece is connected with one group of spring, provides elastic force by this group spring; This group spring is the compression spring.
A kind of fishing tool, be used for being connected and salvage the whipstock that seat is placed on the whipstock orientation spool with drilling rod, comprise fishing rod and recovery hook, recovery hook tilts to be fixedly connected on fishing rod, the top of fishing rod is a link that flexibly connects with drilling rod, and also being provided with nozzle on this link increases rate of flow of fluid.
Described recovery hook is a swallowtail shape, and is fixing with the fishing rod welding; Described link adopts with drilling rod and is threaded.
Technique effect of the present invention is significant: whipstock of the present invention and fishing tool thereof can overcome the technical problem that exists in the prior art, this whipstock adopts screw inclined plane, feather key and flexible member combination realize the location, can realize locating accurately and reliably when whipstock is installed; When adopting fishing tool to salvage, also can make things convenient for whipstock on salvage groove and cooperate and salvage, the present invention when salvaging by ground weight indicator demonstration operation situation, under the cooperation of gyro to measure, help operating personnel and accurately judge, increased the reliability of salvaging.
Description of drawings
Fig. 1 is the front view of recoverable whipstock of the present invention.
Fig. 2 is the schematic diagram that whipstock support orientation spool of the present invention is installed on main sleeve pipe.
Fig. 3 is the schematic diagram that recoverable whipstock of the present invention is installed on whipstock support orientation spool.
Fig. 4 is the lateral view of the fishing tool of whipstock of the present invention.
The specific embodiment
The present invention relates to a kind of recoverable whipstock and fishing tool thereof, be illustrated in figure 1 as the front view of whipstock, this whipstock is connected and composed by upper body 3, following body 5, in the junction of upper body 3 with following body 5, be arranged with chip fishing cup 4, these fishing cup 4 rims of a cup are towards upper body 3, and this upper body 3 adopts with following body 5 and is threaded, and this connection also is convenient to regulate the length of whipstock; Wherein said upper body 3 is provided with the connecting portion that is connected with drilling rod, in structure of the present invention, drilling rod is connected by pin 1 with the upper body 3 of whipstock, on upper body 3, be provided with and salvage groove 2, in the present embodiment, this salvaging groove 2 is a swallow tail shaped slot, also can adopt wedge-shaped slot etc. according to actual needs; The end that described body 5 down is close in fishing cup 4 is provided with flexible member, this flexible member cooperates (referring to Fig. 2, Fig. 3) with the fish neck groove 13 of support orientation spool 14 when whipstock is installed, in the present embodiment, this flexible member can be bullet piece 7, this bullet piece 7 is connected with one group of spring 6, provide elastic force by this group spring 6, this group spring 6 can be the compression spring.The below of this bullet piece 7 is provided with a guiding surface 8, and the bottom of guiding surface 8 is provided with feather key 9, and this guiding surface 8 is screw inclined plane or curve slope.
Simultaneously with reference to figure 2 and content shown in Figure 3, whipstock of the present invention uses in the Multilateral Wells technology, during use whipstock is arranged on the support orientation spool 14, the bottom of this support orientation spool 14 is provided with slips 15, set gradually fish neck groove 13, keyway 12 and inclined-plane 11 on this slips 15, in the present embodiment, inclined-plane 11 can be screw inclined plane or curve slope, matches with the guiding surface 8 of whipstock.
When using whipstock of the present invention, at first in main shaft sleeve pipe 10, send into whipstock support orientation spool 14, the slips 15 on this whipstock support orientation spool 14 engages with the inwall of main shaft sleeve pipe 10, realizes the seat envelope of whipstock support orientation spool 14.The connecting portion of the upper body 3 of whipstock of the present invention is connected with drilling rod, in the present embodiment, drilling rod adopts pin 1 to be connected with whipstock, after being connected firmly whipstock transferred to main shaft sleeve pipe 10 and install, the guiding surface 8 of whipstock matches with the inclined-plane 11 of whipstock support orientation spool 14, feather key 9 under the guiding whipstock on the body 5 enters in the keyway 12 of whipstock support orientation spool 14 smoothly, realize the azimuthal orientation of whipstock and limit whipstock in the rotation of circumferencial direction and move downward, certain antitorque moment and bearing load is provided simultaneously.Meanwhile, the whipstock running tool applies certain pressure, forces down the bullet piece 7 on the body 5 to enter in the fish neck groove 13 of whipstock support orientation spool 14, makes bullet piece 7 cooperate with fish neck groove 13, has the function of scurrying on the whipstock in preventing to construct.After the whipstock installation, send into drilling rod pressurization 5～8 ton forces, shear pin is cut off, and realizes giving up of whipstock, will send into drilling rod after giving up and propose ground, provides guiding surface by whipstock for the follow-up instrument of windowing, survey drill tools.
Obtain the guiding surface that subsequent tool needs, need salvage the whipstock of transferring, be illustrated in figure 4 as the fishing tool of salvaging whipstock of the present invention, this fishing tool is made of fishing rod 18 and recovery hook 19, and the top of fishing rod 18 is provided with the nozzle 17 that connects hydraulic pump, and in the present embodiment, described recovery hook 19 is welded on the bottom of fishing rod 18, be weldingly fixed on together, the shape of this recovery hook 19 matches with the shape of the salvaging groove 2 of whipstock.In order to enter the salvaging groove 2 on the whipstock smoothly, the whipstock fishing tool is to adopt fixedly that hook-type designs, and fishing rod 18 is to the direction of recovery hook 19 certain angle that need tilt.After having implemented to window, survey the brill Multilateral Wells, the fishing rod 18 with drilling rod and fishing tool links together by screw thread 16 on the ground, and fishing tool is sent in the well.
When the nozzle 17 of crossing salvaging groove 2 on the whipstock and fishing tool top when recovery hook 19 arrives and salvages grooves 2, open the hydraulic pump circulation, liquid increases effectively to wash by nozzle 17 flow velocitys salvages the foreign material that may exist in the groove 2.In the present invention, because accurate positioning is reliable in the above-mentioned whipstock installation process, so when adopting fishing tool to salvage whipstock, the direction that no longer needs gyro to measure recovery hook 19, only fishing tool need be connected with the ground weight indicator, and according to the calculating of in the actual well drilled process whipstock being salvaged the depth location of groove 2, recovery hook 19 is carried on slow near the salvaging groove 2, transfer, adjust the orientation angles of salvaging drilling rod, salvage repeatedly, observe the reading of ground weight indicator, rise to 3～5 tons in case find the weight indicator reading, illustrate that whipstock is salvaged successfully, simultaneously under the cooperation of gyro to measure, help operating personnel and accurately judge, increased the reliability of salvaging.Carry fishing tool in the continuation, the bullet piece 7 on the whipstock ejects the fish neck groove 13 of described support orientation spool 14 under pulling force, and ground weight indicator reading descends rapidly, continues operation, is about to whipstock and proposes the face of land, finishes fishing.
Whipstock of the present invention with and the state of fishing tool in the down-hole can adopt monitoring device of the prior art to monitor.
Whipstock of the present invention and fishing tool thereof can overcome the technical problem that exists in the prior art, and this whipstock adopts screw inclined plane, and feather key and flexible member combination realize the location, can realize locating accurately and reliably when whipstock is installed; When adopting fishing tool to salvage, also can make things convenient for whipstock on salvage groove and cooperate and salvage, the present invention shows the operation situation by the ground weight indicator when salvaging, helping operating personnel accurately judges, and under the cooperation of gyro to measure, more help operating personnel and accurately judge, increased the reliability of salvaging.
Claims (10)
1, a kind of recoverable whipstock, comprise main body, it is characterized in that, described main body comprises upper body and following body, both are fixedly connected, the sheathed fishing cup in junction of upper body and following body, the rim of a cup of fishing cup is towards upper body, have the connecting portion that is connected with drilling rod on the described upper body and be located at connecting portion and fishing cup between the salvaging groove, described body down has a guiding surface, the top of guiding surface is provided with a flexible member, and the below of described guiding surface is provided with the feather key of direction location.
2, recoverable whipstock according to claim 1 is characterized in that, described upper body adopts with following body and is threaded, and is used for regulating the length of whipstock.
3, recoverable whipstock according to claim 2 is characterized in that, described upper and lower body junction is provided with reverse thread, regulates the position of fishing cup.
4, recoverable whipstock according to claim 1 is characterized in that, the connecting portion of described upper body adopts pin to be connected with drilling rod.
5, recoverable whipstock according to claim 1 is characterized in that, described salvaging groove is dovetail groove or wedge-shaped slot.
6, recoverable whipstock according to claim 1 is characterized in that, described fishing cup is made up of metal lining and rubber cup, and rubber cup is solidificated in outside the metal lining.
7, recoverable whipstock according to claim 1 is characterized in that, described guiding surface is screw inclined plane or curve slope.
8, recoverable whipstock according to claim 1 is characterized in that, described flexible member is the bullet piece, and this bullet piece is connected with one group of spring, provides elastic force by this group spring; This group spring is the compression spring.
9, a kind of fishing tool, be used for being connected and salvage the recoverable whipstock as claimed in claim 1 that is arranged on the whipstock orientation spool with drilling rod, it is characterized in that, comprise fishing rod and recovery hook, recovery hook tilts to be fixedly connected on fishing rod, the top of fishing rod is a link that flexibly connects with drilling rod, and also being provided with nozzle on this link increases rate of flow of fluid.
10, fishing tool according to claim 9 is characterized in that, described recovery hook is dovetail or wedge shape, and is fixing with the fishing rod welding; Described link adopts with drilling rod and is threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101352615A CN100441829C (en) | 2005-12-29 | 2005-12-29 | Slant device capable of recovering and fishing tool thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101352615A CN100441829C (en) | 2005-12-29 | 2005-12-29 | Slant device capable of recovering and fishing tool thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1793598A CN1793598A (en) | 2006-06-28 |
| CN100441829C true CN100441829C (en) | 2008-12-10 |
Family
ID=36805235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101352615A Expired - Fee Related CN100441829C (en) | 2005-12-29 | 2005-12-29 | Slant device capable of recovering and fishing tool thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100441829C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100419203C (en) * | 2006-09-02 | 2008-09-17 | 辽河石油勘探局 | Recovery type whipstock set |
| CN105064981B (en) * | 2015-07-31 | 2017-10-03 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of net horizontal section sidetracking bore hole whipstock |
| CN105604515B (en) * | 2016-02-29 | 2018-09-21 | 河北中荣石油机械有限责任公司 | Recoverable slant machine and its recycling tool |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5398754A (en) * | 1994-01-25 | 1995-03-21 | Baker Hughes Incorporated | Retrievable whipstock anchor assembly |
| US5909770A (en) * | 1996-11-18 | 1999-06-08 | Baker Hughes Incorporated | Retrievable whipstock |
| US6076606A (en) * | 1998-09-10 | 2000-06-20 | Weatherford/Lamb, Inc. | Through-tubing retrievable whipstock system |
| US6360821B1 (en) * | 1999-05-20 | 2002-03-26 | Tiw Corporation | Combination whipstock and anchor assembly |
| CN2615323Y (en) * | 2003-03-26 | 2004-05-12 | 新疆石油管理局钻井工艺研究院 | Recoverable whipstock |
| CN2668821Y (en) * | 2004-01-08 | 2005-01-05 | 新疆石油管理局钻井工艺研究院 | Self-positioning recoverable oblique device |
| CN2703115Y (en) * | 2004-01-08 | 2005-06-01 | 新疆石油管理局钻井工艺研究院 | Suspension positioning recoverable whipstocks |
| CN2718196Y (en) * | 2004-07-30 | 2005-08-17 | 中国石化集团中原石油勘探局钻井工程技术研究院 | Whipstock for window cutting side drilling |
-
2005
- 2005-12-29 CN CNB2005101352615A patent/CN100441829C/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5398754A (en) * | 1994-01-25 | 1995-03-21 | Baker Hughes Incorporated | Retrievable whipstock anchor assembly |
| US5909770A (en) * | 1996-11-18 | 1999-06-08 | Baker Hughes Incorporated | Retrievable whipstock |
| US6076606A (en) * | 1998-09-10 | 2000-06-20 | Weatherford/Lamb, Inc. | Through-tubing retrievable whipstock system |
| US6360821B1 (en) * | 1999-05-20 | 2002-03-26 | Tiw Corporation | Combination whipstock and anchor assembly |
| CN2615323Y (en) * | 2003-03-26 | 2004-05-12 | 新疆石油管理局钻井工艺研究院 | Recoverable whipstock |
| CN2668821Y (en) * | 2004-01-08 | 2005-01-05 | 新疆石油管理局钻井工艺研究院 | Self-positioning recoverable oblique device |
| CN2703115Y (en) * | 2004-01-08 | 2005-06-01 | 新疆石油管理局钻井工艺研究院 | Suspension positioning recoverable whipstocks |
| CN2718196Y (en) * | 2004-07-30 | 2005-08-17 | 中国石化集团中原石油勘探局钻井工程技术研究院 | Whipstock for window cutting side drilling |
Non-Patent Citations (4)
| Title |
|---|
| 多分枝水平井的钻井工具－可回收式斜向器. 宋玉玲等.钻采工艺，第21卷第3期. 1998 |
| 多分枝水平井的钻井工具－可回收式斜向器. 宋玉玲等.钻采工艺，第21卷第3期. 1998 * |
| 套管开窗侧钻导向工具－斜向器. 舒萍.钻采工艺，第18卷第4期. 1995 |
| 套管开窗侧钻导向工具－斜向器. 舒萍.钻采工艺，第18卷第4期. 1995 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1793598A (en) | 2006-06-28 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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Granted publication date: 20081210 Termination date: 20171229 |