CN202767944U - Pitching sliding sleeve used for sidetrack horizontal well staged fracturing - Google Patents
Pitching sliding sleeve used for sidetrack horizontal well staged fracturing Download PDFInfo
- Publication number
- CN202767944U CN202767944U CN 201220478005 CN201220478005U CN202767944U CN 202767944 U CN202767944 U CN 202767944U CN 201220478005 CN201220478005 CN 201220478005 CN 201220478005 U CN201220478005 U CN 201220478005U CN 202767944 U CN202767944 U CN 202767944U
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- sliding sleeve
- ball seat
- urceolus
- horizontal well
- staged fracturing
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Abstract
The utility model discloses a pitching sliding sleeve used for sidetrack horizontal well staged fracturing. The pitching sliding sleeve used for the sidetrack horizontal well staged fracturing comprises an outer barrel, a connector device, a sliding sleeve assembly and a locking mechanism; the connector device comprises an upper connector and a lower connector; the sliding sleeve assembly comprises a ball seat and an inner sliding sleeve fixedly connected with the ball seat; the ball seat and the inner sliding sleeve are both located on the interior of the outer barrel; the ball seat and the outer barrel are connected through shear pins; an outer barrel wall corresponding to the middle of the ball seat is provided with two diversion holes in a symmetrical mode; the locking mechanism comprises a positioning groove formed in the outer wall of the inner sliding sleeve and a locking ring arranged on the upper portion of the inner wall of the lower connector; and the positioning groove is matched with the locking ring. Due to the fact that the locking mechanism is arranged between the sliding sleeve assembly and the lower connector, when the sliding sleeve assembly moves to the bottom, the locking ring locks the positioning groove so as to achieve the aim of self-locking. According to the pitching sliding sleeve used for the sidetrack horizontal well staged fracturing, the shear pins are sheared off by means of pumping pressure so that the diversion holes on the outer barrel are opened and permanent locking is formed under a well, and the problems of interlamination desilting and locking are effectively solved.
Description
Technical field
The utility model relates to a kind of industrial gas oil sidetrack horizontal well barefoot completion instrument, especially a kind of sidetrack horizontal well staged fracturing pitching sliding sleeve.
Background technology
For the productive formation remaining reserves, slim-hole window sidetracking horizontal well is the most economical effective development technique of generally acknowledging.Domestic sidetracked hole mainly adopts barefoot completion and sieve tube completion.Mainly there is following problem in present sidetrack horizontal well completion tool: the pressure break distance is limited; Instrument once is lowered to the pressing crack construction that is difficult to finish multistage; The down-hole trips out the tubing string difficulty when complex accident occurs.Because sidetrack horizontal well Open-Hole Section distribution of strata is inhomogeneous, adopt sieve tube completion mode specific aim not strong, therefore DeGrain can adopt barefoot completion that the sidetrack horizontal well Open-Hole Section is carried out the segmentation transformation.Concerning the sidetrack horizontal well that adopts barefoot completion, the mode that adds the pitching sliding sleeve between two packers is that fully to transform payzone, improve well yield the most abundant also be effective method.Pitching slides over extensive use in the straight well, but does not have self-locking and do not consider the desilting problem of horizontal well in using.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of sidetrack horizontal well staged fracturing pitching sliding sleeve, and this structure has auto-lock function, and safe and reliable, easy accessibility has solved the desilting problem effectively.
In order to solve the problems of the technologies described above, the utility model sidetrack horizontal well staged fracturing comprises urceolus with the pitching sliding sleeve, piecing devices, be arranged on sliding sleeve assembly and the retaining mechanism of urceolus inside, described piecing devices comprise top connection and lower contact, described top connection, urceolus and lower contact are threaded successively, described sliding sleeve assembly comprises ball seat and inner sliding sleeve, described ball seat bottom is fixedly connected with by screw thread with inner sliding sleeve top, described ball seat is connected by shear pin with urceolus, two pod apertures that have with symmetry on the corresponding outer tube wall in described ball seat middle part, described retaining mechanism comprises the retaining ring that is formed on the locating slot on the inner sliding sleeve outer wall and is arranged on the lower contact upper inside wall, and described locating slot and retaining ring adapt.
Described upper and lower joint is connected with the oil pipe of going into the well accordingly respectively by tubing thread.
Described upper and lower joint and urceolus joint be corresponding the first jackscrew and the second jackscrew that prevents that upper and lower joint and urceolus from relatively rotating that be provided with respectively, and described ball seat and inner sliding sleeve joint are provided with the 3rd jackscrew that prevents that ball seat and inner sliding sleeve from relatively rotating.
The joint of described upper and lower joint and urceolus is provided with sulfuration O RunddichtringO.
Between described ball seat and the urceolus and the upper and lower part that is positioned at pod apertures is provided with sulfuration O RunddichtringO.
Between described inner sliding sleeve and the urceolus and the bottom that is positioned at retaining ring is provided with sulfuration O RunddichtringO.
Between described inner sliding sleeve and the urceolus and the bottom that is positioned at ball seat and inner sliding sleeve joint is provided with sulfuration O RunddichtringO.
After adopting such structure, owing to being provided with retaining mechanism between sliding sleeve assembly and the lower contact, when the sliding sleeve assembly moved to the bottom, retaining ring locking positioning groove was realized the purpose of self-locking.The utility model utilizes pump pressure to cut off shear pin and opens the pod apertures on the urceolus and form permanent locking in the down-hole and can effectively solve the difficult problem of interlayer desilting and locking.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Fig. 1 is the structural representation that the utility model sidetrack horizontal well staged fracturing is used the pitching sliding sleeve.
The specific embodiment
Referring to Fig. 1, the utility model sidetrack horizontal well staged fracturing comprises urceolus 3 with the pitching sliding sleeve, piecing devices, be arranged on sliding sleeve assembly and the retaining mechanism of urceolus 3 inside, described piecing devices comprise top connection 1 and lower contact 13, described top connection 1, urceolus 3 and lower contact 13 are threaded successively, described sliding sleeve assembly comprises ball seat 6 and inner sliding sleeve 9, described ball seat 6 bottoms are fixedly connected with by screw thread with inner sliding sleeve 8 tops, described ball seat 6 is connected by shear pin 7 with urceolus 3, two pod apertures 5 that have with symmetry on corresponding urceolus 3 walls in described ball seat 6 middle parts, described retaining mechanism comprises the retaining ring 12 that is formed on the locating slot 10 on inner sliding sleeve 9 outer walls and is arranged on lower contact 13 upper inside wall, described locating slot 10 adapts with retaining ring 12, when ball seat 6 and inner sliding sleeve 9 moved to the bottom, retaining ring 12 locking positioning grooves 10 were realized the purpose of self-lockings.
Described upper and lower joint 1,13 is connected with the oil pipe of going into the well accordingly respectively by tubing thread.
Described upper and lower joint 1,13 with urceolus 3 joints respectively corresponding being provided with prevent upper and lower joint 1,13 and urceolus 3 the first jackscrew (2) and the second jackscrew 11 that relatively rotate, described ball seat 6 and inner sliding sleeve 9 joints are provided with the 3rd jackscrew 8 that prevents that ball seat 6 and inner sliding sleeve 9 from relatively rotating.
Described upper and lower joint 1,13 and the joint of urceolus 3 be provided with sulfuration O RunddichtringO 4,
Between described ball seat 6 and the urceolus 3 and upper and lower part that is positioned at pod apertures 5 is provided with sulfuration O RunddichtringO 4,
Between described inner sliding sleeve 9 and the urceolus 3 and bottom that is positioned at retaining ring 12 is provided with sulfuration O RunddichtringO 4,
Between described inner sliding sleeve 9 and the urceolus 3 and bottom that is positioned at ball seat 6 and inner sliding sleeve 9 joints is provided with sulfuration O RunddichtringO 4, and the interface between oil pipe annular space and stratum all carries out seal protection like this, can guarantee integrally-built sealing.
On the constant basis of device body, can realize dismounting to different size pitching sliding sleeve by changing ball seat.
When sidetrack horizontal well needs the completion construction, kit is transformed requirement according to the bore hole segmentation be lowered into the precalculated position.When being guaranteed construction, packer setting can not go here and there layer between each section.When needs are opened the sliding sleeve assembly, throw the low-density ball from well head and suppress the low-density ball is delivered to ball seat 6 positions.Promotion ball seat 6 and inner sliding sleeve 9 moved to the bottom when shear pin 7 was by plane of shear under pump function, retaining ring 12 enters in the locating slot 10 of inner sliding sleeve 9, ball seat 6 and inner sliding sleeve 9 can rollbacks with regard to being locked like this, passage between assurance oil pipe annular space and the stratum is opened all the time, and namely pod apertures is in open mode all the time.In the process that ball seat 6 and inner sliding sleeve 9 move, to set up the fluid course between oil pipe and the stratum, thereby can carry out pressing crack construction, the low-density ball of open sliding sleeve assembly also can instead be discharged to and catch in the ball device.Just open fully through discharge opeing, test channel between each payzone like this, can carry out without hindrance closing and adopt.
In sum, content of the present utility model is not limited in the above-described embodiment, and those skilled in the art can propose other embodiment within technological guidance's thought of the present utility model, but these embodiment are included within the scope of the present utility model.
Claims (7)
1. sidetrack horizontal well staged fracturing pitching sliding sleeve, comprise urceolus (3), piecing devices, be arranged on urceolus (3) inner sliding sleeve assembly and retaining mechanism, described piecing devices comprise top connection (1) and lower contact (13), described top connection (1), urceolus (3) and lower contact (13) are threaded successively, it is characterized in that: described sliding sleeve assembly comprises ball seat (6) and inner sliding sleeve (9), described ball seat (6) bottom is fixedly connected with by screw thread with inner sliding sleeve (9) top, described ball seat (6) is connected by shear pin (7) with urceolus (3), with symmetrical two pod apertures (5) that have on corresponding urceolus (3) wall in described ball seat (6) middle part, described retaining mechanism comprises and is formed on the locating slot (10) on inner sliding sleeve (9) outer wall and is arranged on retaining ring (12) on lower contact (13) inwall, and described locating slot (10) adapts with retaining ring (12).
2. according to sidetrack horizontal well staged fracturing pitching sliding sleeve claimed in claim 1, it is characterized in that: described upper and lower joint (1,13) is connected with the oil pipe of going into the well accordingly respectively by tubing thread.
3. according to sidetrack horizontal well staged fracturing pitching sliding sleeve claimed in claim 1, it is characterized in that: described upper and lower joint (1,13) and urceolus (3) joint be corresponding the first jackscrew (2) and the second jackscrew (11) that prevents that upper and lower joint (1,13) and urceolus (3) from relatively rotating that be provided with respectively, and described ball seat (6) and inner sliding sleeve (9) joint are provided with the 3rd jackscrew (8) that prevents that ball seat (6) and inner sliding sleeve (9) from relatively rotating.
4. according to sidetrack horizontal well staged fracturing pitching sliding sleeve claimed in claim 1, it is characterized in that: described upper and lower joint (1,13) is provided with sulfuration O RunddichtringO (4) with the joint of urceolus (3).
5. according to sidetrack horizontal well staged fracturing pitching sliding sleeve claimed in claim 1, it is characterized in that: between described ball seat (6) and the urceolus (3) and the upper and lower part that is positioned at pod apertures (5) is provided with sulfuration O RunddichtringO (4).
6. according to sidetrack horizontal well staged fracturing pitching sliding sleeve claimed in claim 1, it is characterized in that: between described inner sliding sleeve (9) and the urceolus (3) and the bottom that is positioned at retaining ring (12) is provided with sulfuration O RunddichtringO (4).
7. according to sidetrack horizontal well staged fracturing pitching sliding sleeve claimed in claim 1, it is characterized in that: between described inner sliding sleeve (9) and the urceolus (3) and the bottom that is positioned at ball seat (6) and inner sliding sleeve (9) joint is provided with sulfuration O RunddichtringO (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220478005 CN202767944U (en) | 2012-09-18 | 2012-09-18 | Pitching sliding sleeve used for sidetrack horizontal well staged fracturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220478005 CN202767944U (en) | 2012-09-18 | 2012-09-18 | Pitching sliding sleeve used for sidetrack horizontal well staged fracturing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202767944U true CN202767944U (en) | 2013-03-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220478005 Expired - Fee Related CN202767944U (en) | 2012-09-18 | 2012-09-18 | Pitching sliding sleeve used for sidetrack horizontal well staged fracturing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202767944U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291271A (en) * | 2013-06-08 | 2013-09-11 | 四机赛瓦石油钻采设备有限公司 | Fracturing slide sleeve capable of being opened and closed for many times |
| CN104453784A (en) * | 2014-12-12 | 2015-03-25 | 中国石油天然气股份有限公司 | Controllable soluble-ball-seat multistage fracturing sliding sleeve |
| CN106522881A (en) * | 2016-12-07 | 2017-03-22 | 中国石油集团西部钻探工程有限公司 | Downhole isolating valve |
-
2012
- 2012-09-18 CN CN 201220478005 patent/CN202767944U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291271A (en) * | 2013-06-08 | 2013-09-11 | 四机赛瓦石油钻采设备有限公司 | Fracturing slide sleeve capable of being opened and closed for many times |
| CN104453784A (en) * | 2014-12-12 | 2015-03-25 | 中国石油天然气股份有限公司 | Controllable soluble-ball-seat multistage fracturing sliding sleeve |
| CN106522881A (en) * | 2016-12-07 | 2017-03-22 | 中国石油集团西部钻探工程有限公司 | Downhole isolating valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130306 Termination date: 20160918 |