CN205100874U - A mud line is with case slant ware that is used for abandonment well head groove to recycle - Google Patents
A mud line is with case slant ware that is used for abandonment well head groove to recycle Download PDFInfo
- Publication number
- CN205100874U CN205100874U CN201520876498.8U CN201520876498U CN205100874U CN 205100874 U CN205100874 U CN 205100874U CN 201520876498 U CN201520876498 U CN 201520876498U CN 205100874 U CN205100874 U CN 205100874U
- Authority
- CN
- China
- Prior art keywords
- guide pipe
- stand pipe
- well head
- head groove
- swash plate
- 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
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- Earth Drilling (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model discloses a mud line is with case slant ware that is used for abandonment well head groove to recycle, including the stand pipe, the rigid coupling has sleeve pipe quick -operation joint on the stand pipe, the deflecting window has been seted up on the lateral wall of stand pipe, hollow direction base member is equipped with in the stand pipe interpolation, the bearing is fixed with the direction swash plate on hollow direction base member, and the direction swash plate is relative with the deflecting window of stand pipe, the lower part of hollow direction base member is passed through locking screw with the lower part of stand pipe and is connected, and the bottom extension of hollow direction base member is outside the lower extreme of stand pipe, and the hollow bottom of base member and the lower extreme of stand pipe of leading all is located on the support to pass through threaded connection with the support, the rigid coupling has anchor fixed cone in the bottom of support. Adopt the utility model discloses need not special cover and mill or forge and mill outer sheathed tube lateral wall and in order to form the deflecting window, just can utilize former well head groove and well to carry out the probing of new well, simplified operation procedure, reduced low in production cost, improved the operating efficiency.
Description
Technical field
The utility model relates to a kind of instrument utilizing discarded well head groove to carry out new well probing, specifically, relates to a kind of when not changing platform original structure, drills the instrument of new well based on existing discarded well head groove 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 utility model 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 utility model is taked 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 utility model 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 utility model;
Fig. 2 is the sectional view of Fig. 1;
Fig. 3 is guide pipe structural representation of the present utility model;
Fig. 4 is hollow guiding basal body structure schematic diagram of the present utility model;
Fig. 5 is guiding swash plate structural representation of the present utility model;
Fig. 6 is seat structure schematic diagram of the present utility model;
Fig. 7 is grappling wimble structure schematic diagram of the present utility model.
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 utility model, 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 utility model:
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 utility model, until grappling cone of the present utility model 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 utility model, 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 preferred embodiment of the present utility model by reference to the accompanying drawings above; but the utility model 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 utility model; do not departing under the ambit that the utility model aim and claim protect, can also make a lot of form, these all belong within protection domain of the present utility model.
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 |
|---|---|---|---|
| CN201520876498.8U CN205100874U (en) | 2015-11-05 | 2015-11-05 | A mud line is with case slant ware that is used for abandonment well head groove to recycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520876498.8U CN205100874U (en) | 2015-11-05 | 2015-11-05 | A mud line is with case slant ware that is used for abandonment well head groove to recycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205100874U true CN205100874U (en) | 2016-03-23 |
Family
ID=55516661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520876498.8U Expired - Fee Related CN205100874U (en) | 2015-11-05 | 2015-11-05 | A mud line is with case slant ware that is used for abandonment well head groove to recycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205100874U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275396A (en) * | 2015-11-05 | 2016-01-27 | 中国海洋石油总公司 | Whipstock for casing pipes below mud line and applicable to abandoned wellhead slot recycle |
-
2015
- 2015-11-05 CN CN201520876498.8U patent/CN205100874U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275396A (en) * | 2015-11-05 | 2016-01-27 | 中国海洋石油总公司 | Whipstock for casing pipes below mud line and applicable to abandoned wellhead slot recycle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing City, Dongcheng District Chaoyangmen No. 25 North Street P.O. Box 4705 Chinese CNOOC building Co-patentee after: Tianjin Branch of China Sea Prtroleum (China) Co., Ltd. Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Beijing City, Dongcheng District Chaoyangmen No. 25 North Street P.O. Box 4705 Chinese CNOOC building Co-patentee before: Tianjin Branch of China Sea Prtroleum (China) Co., Ltd. Patentee before: China National Offshore Oil Corporation |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160323 Termination date: 20201105 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |