CN202391366U - Downhole positioning device with expansion pipe for petroleum drilling production - Google Patents
Downhole positioning device with expansion pipe for petroleum drilling production Download PDFInfo
- Publication number
- CN202391366U CN202391366U CN2011204846463U CN201120484646U CN202391366U CN 202391366 U CN202391366 U CN 202391366U CN 2011204846463 U CN2011204846463 U CN 2011204846463U CN 201120484646 U CN201120484646 U CN 201120484646U CN 202391366 U CN202391366 U CN 202391366U
- Authority
- CN
- China
- Prior art keywords
- expansion pipe
- drilling
- casing
- whipstock
- sleeve pipe
- 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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Abstract
The utility model relates to a downhole positioning device with an expansion pipe for petroleum drilling production, which comprises a casing. The expansion pipe is arranged in the casing, an annular protrusion is arranged on the outer circumference of the expansion pipe and embedded to the inner wall of the casing, and a positioning bevel surface is arranged on the upper portion of the expansion pipe. The expansion pipe is capable of bearing higher drilling pressure and torque in a downhole and meeting construction requirements of windowing, side drilling, surface grinding, milling and the like, and accordingly normality in operations of petroleum production, well repairing and formation improvement and the like can be guaranteed. Besides, since the expansion pipe is provided with positioning and locking devices for hanging a drilling whipstock and a repairing whipstock, the drilling whipstock and a branch reentry whipstock are positioned reliably. Further, the inner diameter of the casing is enabled to be maximum due to use of the expansion pipe, multiple branch wells can be drilled in the same casing, and the quantity of the branch wells is not limited.
Description
Technical field
The utility model relates to a kind of petroleum drilling and mining and uses device, specifically, relates to a kind of petroleum drilling and mining and uses the expansion tube down-hole positioning device.
Background technology
The location, down-hole is the key problem in technology of multilateral well, and positioner needs enough axial load resistants, Chinese People's Anti-Japanese Military and Political College's moment of torsion and high pressure sealing ability.Specialty is because technical limitations both at home and abroad; In old well sidetracking Multilateral Wells, adopt the slip-type anchor tool to add packer from bottom to top perhaps simply with the long distance tieback of sleeve pipe location; These instruments are because the inherent shortcoming of itself causes many disadvantages; Completion rear sleeve latus rectum significantly reduces, and brings a lot of problems for follow-up oil recovery, well workover and oil formation improvement etc.External specialized company must just can carry out subsequent job with the special instrument of the said firm after accomplishing multilateral well, construction cost is big.Locating unreliable is another shortcoming of above-mentioned instrument; Poor-performing on axial load resistant, Chinese People's Anti-Japanese Military and Political College's moment of torsion and high pressure sealing ability; Slips has the hard defects infringement to sleeve pipe, and length can't be born bigger load and moment of torsion apart from the sleeve pipe tieback, causes directed inaccurate; Under prop up well tool and be difficult for centering position and orientation, make Zhi Jing " selectivity reentry " become a big difficult point of beating the multiple-limb technology.Moreover, the use of above-mentioned instrument, completion rear sleeve latus rectum significantly reduces, and therefore, in the small size sleeve pipe, should not in a sleeve pipe, make a call to the Multilateral Wells more than 3.But the domestic production sleeve pipe overwhelming majority is the small size sleeve pipe, causes the domestic difficulty that digs a branch well higher, and success rate is littler, has limited domestic multilateral well The Application of Technology and popularization.
The utility model content
The utility model technical issues that need to address are to overcome the defective of existing multilateral well down-hole location technology; Provide a kind of petroleum drilling and mining to use the expansion tube down-hole positioning device; Solved problem, realized being lowered to the reliable location of Multilateral Wells instrument to the permanent location of Zhi Jing; And the use of expansion tube makes the internal diameter of sleeve pipe maximum, guarantees that later operations such as oil recovery, well workover and oil formation improvement can normally carry out; And can in same sleeve pipe, get a plurality of Multilateral Wells, a well number is unrestricted.
For addressing the above problem; The technical scheme that the utility model adopted is: petroleum drilling and mining is used the expansion tube down-hole positioning device; Comprise sleeve pipe, be provided with expansion tube in the said sleeve pipe, the excircle of said expansion tube is provided with annular protrusion; Said annular protrusion embeds in the inwall of sleeve pipe, and the top of said expansion tube is provided with the inclined-plane, location.
The utility model is taked above technical scheme, has the following advantages: be provided with expansion tube in the sleeve pipe, be limited by annular protrusion on the excircle of expansion tube; Annular protrusion embeds in the inwall of sleeve pipe; Expansion tube is suppressed by pressure device and is made its expansion, distortion, and the squeezing bushing inwall is attached on the internal surface of sleeve pipe firmly; After the end of expanding, the down-hole is suppressed instrument and is proposed in sleeve pipe with drilling rod.
The utility model expansion tube has formed the permanent location of Zhi Jing in the down-hole; And expansion tube can bear great the pressure of the drill and moment of torsion in the down-hole; Satisfy construction requirement such as window, sidetracking, plain grinding, cover mill fully; Guarantee that later operations such as oil recovery, well workover and oil formation improvement can normally carry out; Expansion tube is provided with location and the locking device into drilling well whipstock and well workover whipstock seat extension, has realized the reliable location of drilling well whipstock with a well reentry whipstock, and the use of expansion tube makes the internal diameter of sleeve pipe maximum; And can in same sleeve pipe, get a plurality of Multilateral Wells, a well number is unrestricted.
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Description of drawings
Fig. 1 implements the structural representation of PetroChina Company Limited.'s drilling with the expansion tube down-hole positioning device for the utility model.
Among the figure:
The 1-sleeve pipe; 2-locatees the inclined-plane; The 3-expansion tube; The 4-annular protrusion.
The specific embodiment
Embodiment: shown in accompanying drawing; Petroleum drilling and mining is used the expansion tube down-hole positioning device, comprises sleeve pipe 1, is provided with expansion tube 3 in the said sleeve pipe 1; The excircle of said expansion tube 3 is provided with annular protrusion 4; Said annular protrusion 4 embeds in the inwall of sleeve pipe 1, and the top of expansion tube 3 is provided with inclined-plane 2, location, has realized boring the reliable location of completion whipstock and well workover, a well reentry whipstock.
Expansion tube 3 is fixedly connected with sleeve pipe 1; Expansion tube 3 is suppressed by pressure device and is made its expansion, distortion; The inwall of squeezing bushing 1 is attached on sleeve pipe 1 inwall firmly, and the use of expansion tube 3 makes the internal diameter of sleeve pipe 1 maximum; And can in same sleeve pipe 1, get a plurality of Multilateral Wells, a well number is unrestricted.
Claims (1)
1. petroleum drilling and mining is used the expansion tube down-hole positioning device; Comprise sleeve pipe (1); It is characterized in that: be provided with expansion tube (3) in the said sleeve pipe (1); The excircle of said expansion tube (3) is provided with annular protrusion (4), and said annular protrusion (4) embeds in the inwall of sleeve pipe (1), and the top of said expansion tube (3) is provided with inclined-plane (2), location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204846463U CN202391366U (en) | 2011-11-29 | 2011-11-29 | Downhole positioning device with expansion pipe for petroleum drilling production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204846463U CN202391366U (en) | 2011-11-29 | 2011-11-29 | Downhole positioning device with expansion pipe for petroleum drilling production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202391366U true CN202391366U (en) | 2012-08-22 |
Family
ID=46666297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204846463U Expired - Fee Related CN202391366U (en) | 2011-11-29 | 2011-11-29 | Downhole positioning device with expansion pipe for petroleum drilling production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202391366U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233696A (en) * | 2013-04-28 | 2013-08-07 | 成都科盛石油科技有限公司 | Two-section repairing mechanism for repairing well wall |
| CN104747110A (en) * | 2013-12-31 | 2015-07-01 | 中国石油化工集团公司 | Expansion casing positioning device |
-
2011
- 2011-11-29 CN CN2011204846463U patent/CN202391366U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233696A (en) * | 2013-04-28 | 2013-08-07 | 成都科盛石油科技有限公司 | Two-section repairing mechanism for repairing well wall |
| CN104747110A (en) * | 2013-12-31 | 2015-07-01 | 中国石油化工集团公司 | Expansion casing positioning device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20120822 Termination date: 20121129 |