CN105275396A - Whipstock for casing pipes below mud line and applicable to abandoned wellhead slot recycle - Google Patents
Whipstock for casing pipes below mud line and applicable to abandoned wellhead slot recycle Download PDFInfo
- Publication number
- CN105275396A CN105275396A CN201510750092.XA CN201510750092A CN105275396A CN 105275396 A CN105275396 A CN 105275396A CN 201510750092 A CN201510750092 A CN 201510750092A CN 105275396 A CN105275396 A CN 105275396A
- Authority
- CN
- China
- Prior art keywords
- guide pipe
- whipstock
- guide tube
- described guide
- mud line
- 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.)
- Pending
Links
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a whipstock for casing pipes below a mud line and applicable to abandoned wellhead slot recycle. The whipstock comprises a guide tube; the upper end of the guide tube is fixedly connected with a casing fast joint; a deflecting window is formed at the side wall of the guide tube; a hollow guide base body is inserted into the guide tube; a guide oblique plate is fixedly supported on the hollow guide base body; the guide oblique plate is opposite to the deflecting window of the guide tube; the lower part of the hollow guide base body is connected with the lower part of the guide tube through a locking screw; the bottom of the hollow guide base body extends out from the lower end of the guide tube; the bottom of the hollow guide base body and the lower end of the guide tube are seated on a supporting seat and are connected with the supporting seat through screw threads; and the bottom of the supporting seat is fixedly connected with an anchoring cone. According to the whipstock of the invention, the side wall of an outer casing is not needed to be specially milled or forged to from a deflecting window, and the drilling of new wells can be carried out based on original wellhead slots and boreholes, and therefore, operation procedures can be simplified, and production cost can be reduced, and operation efficiency can be improved.
Description
Technical field
The present invention relates to a kind of instrument utilizing discarded well head groove to carry out new well probing, specifically, relating to a kind of when not changing platform original structure, based on existing discarded well head groove well, drill the instrument of new well at former well periphery assigned direction.
Background technology
Production platform at sea, once a bite well is discarded or production capacity exhaustion, and other wells still can continue to produce, and through explore in this block still have considerable oil gas storage time, just need the probing of new well to develop.But be limited to well head groove to use up, when not changing platform structure, the probing of new well can only be carried out based on abandoned well or the former well head groove of production capacity exhaustion, thus significantly extend the application life of platform, there is higher economic worth.
At present, the method for discarded well head groove recycling mainly: carry out window sidetracking in the original sleeve pipe below mud line, to complete the probing of new well.This way requires: first remove at least two-layer inner sleeve, then enter sidetrack drilling tool down, carry out the sidewall shear of outer layer sleeve, to form deflecting window.Marine drilling is according to different well ' s conditions requirement, and cementing concrete may return to mud face.So offering deflecting window on the outer layer sleeve being removed sleeve pipe needs to carry out a large amount of cover millings or forging milling operation.As everyone knows, the efficiency of cover milling and forging milling operation is very low, and progress is very slow, and work flow is very complicated, and cost is high, and operating efficiency is low.
Summary of the invention
The present invention provides a kind of mud line for discarded well head groove recycling with setting of casing whipstock for solving in known technology the technical problem that exists, and this whipstock can simplify the work flow of new well probing, reduces cost of production low, improves operating efficiency.
The technical scheme that the present invention takes for the technical problem existed in solution known technology is: a kind of mud line for discarded well head groove recycling, with setting of casing whipstock, comprises guide pipe, is connected with sleeve pipe snap joint in described guide pipe upper end; The sidewall of described guide pipe offers deflecting window; Hollow guiding matrix is fitted with in described guide pipe; On described hollow guiding matrix, support is fixed with guiding swash plate, and described guiding swash plate is relative with the deflecting window of described guide pipe; The bottom of described hollow guiding matrix is connected by lock-screw with the bottom of described guide pipe, the bottom of described hollow guiding matrix extends in outside the lower end of described guide pipe, the bottom of described hollow guiding matrix and the lower end of described guide pipe are all seated on bearing, and be threaded connection with described bearing, grappling cone is connected with in the bottom of described bearing.
The lower end of described guiding swash plate is positioned at the lower to top of the deflecting window of described guide pipe.
Described sleeve pipe snap joint is circlip type male joint.
Described sleeve pipe snap joint, described guide pipe, described guiding swash plate, described hollow guiding matrix, described lock-screw, described bearing and described grappling cone all adopt 40CrMnMo to make.
The advantage that the present invention has and good effect are: by adopting the structure arranging deflecting window and guiding swash plate on whipstock, the bit drills of trepan is led to open outer layer sleeve, and without the need to overlap milling or forging milling outer layer sleeve specially sidewall to form deflecting window, former well head groove and well just can be utilized to carry out the probing of new well, simplify work flow, reduce cost of production low, improve operating efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the sectional view of Fig. 1;
Fig. 3 is guide pipe structural representation of the present invention;
Fig. 4 is hollow guiding basal body structure schematic diagram of the present invention;
Fig. 5 is guiding swash plate structural representation of the present invention;
Fig. 6 is seat structure schematic diagram of the present invention;
Fig. 7 is grappling wimble structure schematic diagram of the present invention.
In figure: 1, sleeve pipe snap joint, 2, guide pipe, 3, guiding swash plate, 4, hollow guiding matrix, 5, lock-screw, 6, bearing, 7, grappling cone.
Detailed description of the invention
For summary of the invention of the present invention, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1 ~ Fig. 7, a kind of mud line for discarded well head groove recycling, with setting of casing whipstock, comprises guide pipe 2, is connected with sleeve pipe snap joint 1 in described guide pipe 2 upper end; The sidewall of described guide pipe 2 offers deflecting window; Hollow guiding matrix 4 is fitted with in described guide pipe 2; On described hollow guiding matrix 4, support is fixed with guiding swash plate 3, and described guiding swash plate 3 is relative with the deflecting window of described guide pipe 2; The bottom of described hollow guiding matrix 4 is connected by lock-screw 5 with the bottom of described guide pipe 2, the bottom of described hollow guiding matrix 4 extends in outside the lower end of described guide pipe 2, the bottom of described hollow guiding matrix 4 and the lower end of described guide pipe 2 are all seated on bearing 6, and be threaded connection with described bearing 6, grappling cone 7 is connected with in the bottom of described bearing 6.
In the present embodiment, the lower end of described guiding swash plate 3 is positioned at the lower to top of the deflecting window of described guide pipe 2.Described sleeve pipe snap joint 1 is circlip type male joint.Described sleeve pipe snap joint 1, described guide pipe 2, described guiding swash plate 3, described hollow guiding matrix 4, described lock-screw 5, described bearing 6 and described grappling cone 7 all adopt 40CrMnMo to make.Described guide pipe 2 is that the sleeve pipe adopting offshore drilling to use is made, and sidewall has deflecting window in the middle, windowing for drill bit provides window.
Operating principle of the present invention:
First employing prior art removes the relevant sleeve pipe in abandoned well sleeve pipe below mud line, then enter under adopting casing for well drilling to carry the present invention, until grappling cone of the present invention all inserts in the innermost layer sleeve pipe of below, bearing is occupied stably fixing at the cannula tip be truncated.Owing to being provided with deflecting window on guide pipe of the present invention, therefore can bore directly down, drill bit enters the deflecting window on guide pipe under the leading of guiding swash plate, and then the sidewall boring outer layer sleeve carries out creeping into of new well.Comparatively traditional approach is compared, and eliminates the operation adopting side drilling tool to shear to be formed deflecting window on the sidewall of outer layer sleeve, simplifies work flow, reduce cost of production low, improve operating efficiency.
Although be described the preferred embodiments of the present invention by reference to the accompanying drawings above; but the present invention is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, can also make a lot of form, these all belong within protection scope of the present invention.
Claims (4)
1. for the mud line of discarded well head groove recycling with a setting of casing whipstock, it is characterized in that, comprise guide pipe, be connected with sleeve pipe snap joint in described guide pipe upper end; The sidewall of described guide pipe offers deflecting window; Hollow guiding matrix is fitted with in described guide pipe; On described hollow guiding matrix, support is fixed with guiding swash plate, and described guiding swash plate is relative with the deflecting window of described guide pipe; The bottom of described hollow guiding matrix is connected by lock-screw with the bottom of described guide pipe, the bottom of described hollow guiding matrix extends in outside the lower end of described guide pipe, the bottom of described hollow guiding matrix and the lower end of described guide pipe are all seated on bearing, and be threaded connection with described bearing, grappling cone is connected with in the bottom of described bearing.
2. the mud line for discarded well head groove recycling according to claim 1 is with setting of casing whipstock, and it is characterized in that, the lower end of described guiding swash plate is positioned at the lower to top of the deflecting window of described guide pipe.
3. the mud line for discarded well head groove recycling according to claim 1 is with setting of casing whipstock, and it is characterized in that, described sleeve pipe snap joint is circlip type male joint.
4. the mud line for discarded well head groove recycling according to claim 1 is with setting of casing whipstock, it is characterized in that, described sleeve pipe snap joint, described guide pipe, described guiding swash plate, described hollow guiding matrix, described lock-screw, described bearing and described grappling cone all adopt 40CrMnMo to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510750092.XA CN105275396A (en) | 2015-11-05 | 2015-11-05 | Whipstock for casing pipes below mud line and applicable to abandoned wellhead slot recycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510750092.XA CN105275396A (en) | 2015-11-05 | 2015-11-05 | Whipstock for casing pipes below mud line and applicable to abandoned wellhead slot recycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105275396A true CN105275396A (en) | 2016-01-27 |
Family
ID=55145128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510750092.XA Pending CN105275396A (en) | 2015-11-05 | 2015-11-05 | Whipstock for casing pipes below mud line and applicable to abandoned wellhead slot recycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105275396A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100546A (en) * | 2017-07-06 | 2017-08-29 | 贵州省地质矿产勘查开发局111地质大队 | Slope guiding device directly connected with sleeve |
| CN107386998A (en) * | 2017-08-14 | 2017-11-24 | 中国海洋石油总公司 | A kind of adjustable-angle formula whipstock is oriented to taper joint |
| CN108397137A (en) * | 2018-03-01 | 2018-08-14 | 中国海洋石油集团有限公司 | A kind of deflecting tool and its manufacturing method |
| CN111305272A (en) * | 2019-12-20 | 2020-06-19 | 汪栋 | Large-diameter inclined pipe for well accident treatment and construction method thereof |
| CN111878021A (en) * | 2020-07-27 | 2020-11-03 | 中海石油(中国)有限公司 | Multilateral well tool system and method |
| CN111946265A (en) * | 2020-08-21 | 2020-11-17 | 中海石油(中国)有限公司 | Hollow whipstock capable of being connected back |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1124514A (en) * | 1993-04-30 | 1996-06-12 | 国际壳牌研究有限公司 | Drilling kick-off device |
| WO2003087524A1 (en) * | 2002-04-12 | 2003-10-23 | Weatherford/Lamb, Inc. | Whipstock assembly and method of manufacture |
| WO2004051053A1 (en) * | 2002-12-02 | 2004-06-17 | Smith International, Inc. | Apparatus and method for opening and closing lateral boreholes |
| CN205100874U (en) * | 2015-11-05 | 2016-03-23 | 中国海洋石油总公司 | A mud line is with case slant ware that is used for abandonment well head groove to recycle |
-
2015
- 2015-11-05 CN CN201510750092.XA patent/CN105275396A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1124514A (en) * | 1993-04-30 | 1996-06-12 | 国际壳牌研究有限公司 | Drilling kick-off device |
| WO2003087524A1 (en) * | 2002-04-12 | 2003-10-23 | Weatherford/Lamb, Inc. | Whipstock assembly and method of manufacture |
| WO2004051053A1 (en) * | 2002-12-02 | 2004-06-17 | Smith International, Inc. | Apparatus and method for opening and closing lateral boreholes |
| CN205100874U (en) * | 2015-11-05 | 2016-03-23 | 中国海洋石油总公司 | A mud line is with case slant ware that is used for abandonment well head groove to recycle |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100546A (en) * | 2017-07-06 | 2017-08-29 | 贵州省地质矿产勘查开发局111地质大队 | Slope guiding device directly connected with sleeve |
| CN107386998A (en) * | 2017-08-14 | 2017-11-24 | 中国海洋石油总公司 | A kind of adjustable-angle formula whipstock is oriented to taper joint |
| CN107386998B (en) * | 2017-08-14 | 2019-09-20 | 中国海洋石油集团有限公司 | A kind of adjustable-angle formula whipstock guiding taper joint |
| CN108397137A (en) * | 2018-03-01 | 2018-08-14 | 中国海洋石油集团有限公司 | A kind of deflecting tool and its manufacturing method |
| CN111305272A (en) * | 2019-12-20 | 2020-06-19 | 汪栋 | Large-diameter inclined pipe for well accident treatment and construction method thereof |
| CN111878021A (en) * | 2020-07-27 | 2020-11-03 | 中海石油(中国)有限公司 | Multilateral well tool system and method |
| CN111946265A (en) * | 2020-08-21 | 2020-11-17 | 中海石油(中国)有限公司 | Hollow whipstock capable of being connected back |
| CN111946265B (en) * | 2020-08-21 | 2022-05-17 | 中海石油(中国)有限公司 | Hollow whipstock capable of being connected back |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105275396A (en) | Whipstock for casing pipes below mud line and applicable to abandoned wellhead slot recycle | |
| CN102418478B (en) | Operation method of hollow guider by using multilateral well windowing sidetrack drilling | |
| CN110067509B (en) | Reverse well drilling machine capable of drilling directional pilot hole and construction process of directional pilot hole | |
| CN105064919A (en) | Ultra-short-radius radial lateral drilling method for horizontal wells | |
| CN104847263A (en) | Coal bed methane far-end butt joint horizontal well drilling method | |
| CN104912479B (en) | Method for drilling and completion of horizontal branched well for coal bed gas | |
| CN203412537U (en) | Rope-core recovery drilling tool | |
| CN104405281A (en) | Casing drilling technique for over-goaf | |
| CN104563936A (en) | Coiled tubing drilling polishing horizontal section cement plug downhole tool combination and technology | |
| CN102678059A (en) | Energy storage protection tool of mechanical drilling tool | |
| CN109854203B (en) | Windowing sidetracking plugging device and method for branch well | |
| NO20131114A1 (en) | System and method high pressure high temperature feedback | |
| CN205823162U (en) | A kind of pipe-following drilling eccentric drilling device | |
| CN205100874U (en) | A mud line is with case slant ware that is used for abandonment well head groove to recycle | |
| CN102661147B (en) | Advanced telescopic sampling drilling tool | |
| CN102635335A (en) | Well structure for delaying casing damage on fault | |
| CN101382043A (en) | Combined drill for drilling with casing | |
| CN107630661A (en) | Can fast drilling multistage drill bit | |
| CN202266201U (en) | Sleeve floating coupler | |
| CN207960501U (en) | Can fast drilling multistage drill bit | |
| CN202417310U (en) | Hollow whipstock for sidetrack drilling of branch wells | |
| CN102943648A (en) | Floating tool applied to screen pipe well completion | |
| CN103061685B (en) | Downhole drilling tool and anti-loosening self-locking structure thereof | |
| CN105221080A (en) | Solution cavity protector and adopt the navigation channel drilling on waterways method of this protector | |
| CN103410446A (en) | Reaming inclinometry way-type drilling unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160127 |