CN201568012U - Stage hoop - Google Patents
Stage hoop Download PDFInfo
- Publication number
- CN201568012U CN201568012U CN2009201557021U CN200920155702U CN201568012U CN 201568012 U CN201568012 U CN 201568012U CN 2009201557021 U CN2009201557021 U CN 2009201557021U CN 200920155702 U CN200920155702 U CN 200920155702U CN 201568012 U CN201568012 U CN 201568012U
- Authority
- CN
- China
- Prior art keywords
- perforate cover
- hole
- borehole jack
- sizing collar
- main body
- 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
Links
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model relates to a stage hoop used in oil and gas well cementation and completion process, which mainly comprises a main body (1), a hole closing sleeve (3), a hole opening sleeve (5) and an offsetting spring (6). The hole closing sleeve (3) is fixed in the main body by a pin (2); and the hole opening sleeve (5) is fixed in the main body (1) through a shear pin (4), and is located at the lower end of the hole closing sleeve (3); the outer surface of the hole opening sleeve (5) takes the shape of a step; the lower stepped surface of the hole opening sleeve (5), the inner surface of the lower part of the main body (1) and the end face of a lower adaptor (7) form a hollow cavity in which the offsetting compression spring (6) is arranged; the upper part of the lower adaptor (7) is provided with external screw threads and is connected with the lower end of the main body (1); a cement injection hole is left at the middle part of the main body (1); and the upper stepped surface of the hole opening sleeve (5) seals the cement injection hole. The stage hoop is compact in structure, convenient to operate and easy to manufacture and can realize hole opening and closing operations under the presence of a pipe string.
Description
Technical field
The utility model relates to the instrument that the solid completion practice of oil gas field is used, and particularly a kind of sizing collar belongs to the downhole tool class.
Background technology
Sizing collar was used very extensive during, completion solid at the oil gas well constructed, the conventional employing thrown plug or steel ball switch hole, to realize the stage cementing operation, but have for inside when implementing the operation of sizing collar switch hole under the situation of tubing string, with plug or comparatively inconvenience of stuff, and the at present used sizing collar cementing tool problems such as the hole is unreliable that occur reaching a standard in the use at the scene, these problems have directly influenced the success or failure of cementing operation operation and the quality of cementing quality.
Summary of the invention
The utility model provides a kind of sizing collar, can solve the switch hole problem that there is sizing collar under the tubing string operating mode inside, possesses the reliable performance in the hole of closing.
For achieving the above object, the technical solution adopted in the utility model is as follows: mainly be made up of body, pass borehole jack, perforate cover, back-moving spring, pin will close borehole jack and be fixed in the body; The perforate cover is fixed in the body by shear pin, and is positioned at borehole jack lower end, pass, and perforate cover external surface is step-like, and its leave from office terrace and body lower inner surface and lower contact end face form cavity, the built-in compression spring that resets; Lower contact top has external screw thread to be connected with the body lower end; The cementing hole is left at the body middle part, and perforate puts step surface and seals the cementing hole.
Leaving the cross section at borehole jack middle part, pass is trapezoidal groove, for being lowered to the permanent hole usefulness of closing of kit machinery.
For guaranteeing that perforate cover and body form sealing, have sealing ring between the two; The perforate cover is topped bar all has sealing ring at perforate cover upper-lower position; Lower contact upper end is outer to have sealing ring and body to form sealing, in have sealing ring and perforate to seal between overlapping.
Body has intercommunicating pore at the compression spring medium position that resets.
Close between borehole jack and the body, the perforate cover respectively and form between the body, lower contact and be slidingly matched.
Advantage of the present utility model is: compact conformation, easy to operate, be easy to make; Can realize that there is the switch hole operation of the sizing collar under the tubing string situation inside, increase sizing collar and close the hole reliability.
Description of drawings
Fig. 1 is the utility model sizing collar structural representation.
The specific embodiment
The utility model is not subjected to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.
The utility model is described in more detail below in conjunction with accompanying drawing.
A kind of sizing collar as shown in Figure 1 mainly is made up of body 1, pass borehole jack 3, perforate cover 5, back-moving spring 6, and pin 2 will close borehole jack 3 and be fixed in the body 1; Perforate cover 5 is fixed in the body 1 by shear pin 4, and is positioned at and closes borehole jack 3 lower ends, and it is step-like that 5 external surfaces are overlapped in perforate, and its leave from office terrace and body 1 lower inner surface and lower contact 7 end faces form cavity, and built-in resetting compressed spring 6; Lower contact 7 tops have external screw thread to be connected with body 1 lower end; The cementing hole is left at body 1 middle part, the perforate cover 5 cementing hole, terrace envelope position of appearing on the stage.
Can be according to actual needs, to above-mentioned a kind of sizing collar further optimization and/or improvements:
Leaving the cross section at borehole jack 3 middle parts, pass is trapezoidal groove, uses for being lowered to the permanent hole of closing of kit machinery.
Between perforate cover 3 and the body 1 sealing ring is arranged; Perforate cover 5 is topped bar all has sealing ring at perforate cover upper-lower position; Have sealing ring and body 1 to form sealing outside lower contact 7 upper ends, in have between sealing ring and the perforate cover 5 and seal.
Body 1 has intercommunicating pore at compression spring 6 medium positions that reset.
Close between borehole jack 3 and the body 1, perforate overlaps 5 respectively and form between the body 1, lower contact 7 and be slidingly matched.
The compression spring 6 that resets can be that the trace compression also can be arranged in a state of nature under confined state.
Require the diameter of the diameter of pin 2, avoid pin cut off in advance by hydraulic coupling greater than shear pin 4.
Above-mentioned pin 2 and shear pin 4 can be for a plurality of, and body 1 relevant position radial equipartition circular hole is in order to install pin 2 and shear pin 4.
The sealing ring that closes on the borehole jack 3 is at least two groups, and the distance between two groups of sealing rings is greater than the diameter in cementing hole.
Operating principle of the present utility model is: in the cementing process, perforate cover 5 is cut off shear pin 4 and descending under the effect of hydraulic coupling, force the compression spring 6 that resets to move down certain distance, to below, body 1 cementing hole, abdicate the cementing hole, implement cementing job, after cementing is finished, perforate cover 5 goes upward to initial position under the effect of the compression spring 6 that resets, realize the poroid attitude in pass of sizing collar.After the well cementing operation, press down by the special tool that links to each other with the interpolation tubing string and to close borehole jack 3, cut off pin 2, close borehole jack 3 and move down, make the liquid opening be in position between the two seals circle that closes on the borehole jack 3, realize forever closing of sizing collar.
Claims (9)
1. a sizing collar mainly is made up of body (1), pass borehole jack (3), perforate cover (5), back-moving spring (6), and it is characterized in that: pin (2) will close borehole jack (3) and be fixed in the body (1); Perforate cover (5) is fixed in the body (1) by shear pin (4), and be positioned at and close borehole jack (3) lower end, perforate cover (5) external surface is step-like, and its leave from office terrace and body (1) lower inner surface and lower contact (7) end face form cavity, the built-in compression spring (6) that resets; Lower contact (7) top has external screw thread to be connected with body (1) lower end; The cementing hole is left at body (1) middle part, and perforate cover (5) terrace of appearing on the stage is sealed the cementing hole.
2. a kind of sizing collar according to claim 1 is characterized in that: it is trapezoidal groove that the cross section is left at pass borehole jack (3) middle part.
3. according to claim 1 or the described a kind of sizing collar of claim 2, it is characterized in that: between perforate cover (3) and the body (1) sealing ring is arranged; Perforate cover (5) is topped bar all has sealing ring at perforate cover upper-lower position; Lower contact (7) upper end is outer to have sealing ring and body (1) to form sealing, in have between sealing ring and the perforate cover (5) and seal.
4. according to claim 1 or the described a kind of sizing collar of claim 2, it is characterized in that: body (1) has intercommunicating pore at compression spring (6) medium position that resets.
5. a kind of sizing collar according to claim 3 is characterized in that: body (1) has intercommunicating pore at compression spring (6) medium position that resets.
6. according to claim 1 or the described a kind of sizing collar of claim 2, it is characterized in that: close between borehole jack (3) and the body (1), perforate cover (5) respectively and form between the body (1), lower contact (7) and be slidingly matched.
7. a kind of sizing collar according to claim 3 is characterized in that: close between borehole jack (3) and the body (1), perforate cover (5) respectively and form between the body (1), lower contact (7) and be slidingly matched.
8. a kind of sizing collar according to claim 4 is characterized in that: close between borehole jack (3) and the body (1), perforate cover (5) respectively and form between the body (1), lower contact (7) and be slidingly matched.
9. a kind of sizing collar according to claim 5 is characterized in that: close between borehole jack (3) and the body (1), perforate cover (5) respectively and form between the body (1), lower contact (7) and be slidingly matched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201557021U CN201568012U (en) | 2009-06-03 | 2009-06-03 | Stage hoop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201557021U CN201568012U (en) | 2009-06-03 | 2009-06-03 | Stage hoop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201568012U true CN201568012U (en) | 2010-09-01 |
Family
ID=42660299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201557021U Expired - Fee Related CN201568012U (en) | 2009-06-03 | 2009-06-03 | Stage hoop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201568012U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013138896A1 (en) * | 2012-03-22 | 2013-09-26 | Packers Plus Energy Services Inc. | Stage tool for wellbore cementing |
| CN104895524A (en) * | 2015-05-26 | 2015-09-09 | 成都高普石油工程技术有限公司 | Classifying hoop |
| CN117468888A (en) * | 2023-12-27 | 2024-01-30 | 中国石油集团川庆钻探工程有限公司 | Underground airtight plugging tool and plugging method |
-
2009
- 2009-06-03 CN CN2009201557021U patent/CN201568012U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013138896A1 (en) * | 2012-03-22 | 2013-09-26 | Packers Plus Energy Services Inc. | Stage tool for wellbore cementing |
| US9856715B2 (en) | 2012-03-22 | 2018-01-02 | Daniel Jon Themig | Stage tool for wellbore cementing |
| CN104895524A (en) * | 2015-05-26 | 2015-09-09 | 成都高普石油工程技术有限公司 | Classifying hoop |
| CN117468888A (en) * | 2023-12-27 | 2024-01-30 | 中国石油集团川庆钻探工程有限公司 | Underground airtight plugging tool and plugging method |
| CN117468888B (en) * | 2023-12-27 | 2024-03-19 | 中国石油集团川庆钻探工程有限公司 | Underground airtight plugging tool and plugging method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208502731U (en) | A kind of solvable bridge plug of minor diameter | |
| CN205605160U (en) | Broken tail pipe blanking plug | |
| CN108625815B (en) | Filling type external pipe packer | |
| CN204024576U (en) | A kind of packer | |
| CN201568012U (en) | Stage hoop | |
| CN107893641B (en) | A kind of underground work metal packer and method | |
| CN103541709B (en) | Fracturing sliding bush assembly | |
| CN201778671U (en) | Locking mechanism for expansion cone | |
| CN203097813U (en) | Flow restricting self-filling float collar for manifold cycles | |
| CN201090177Y (en) | Multifunctional check valve | |
| CN201738870U (en) | Multifunctional expanding packer | |
| CN202325408U (en) | Outer sliding sleeve reverse circulation short section | |
| CN202544789U (en) | While-drilling jar | |
| CN104499989A (en) | Fully-enclosed track anchoring mechanism with function of sand prevention | |
| CN204899838U (en) | Compound bridging plug of ball cage | |
| CN111927393B (en) | Expanding sliding sleeve opening and closing tool | |
| CN204960825U (en) | Hydraulic pressure release sub | |
| CN104153740A (en) | Differential pressure type oil sleeve communication valve | |
| CN201714357U (en) | Horizontal well subsection filling transmitting pressure tool | |
| CN202970573U (en) | Combined reducing expansion cone of expansion pipe | |
| CN206737883U (en) | The repeatable switch pilot backwash valve of one kind | |
| CN204283317U (en) | A kind of ocean deepwater well tubing packer | |
| CN203742540U (en) | Hydraulic grading hoop device easy to drill | |
| CN204436301U (en) | A kind of elastic cutting sleeve type gauge tap | |
| CN217001771U (en) | Hydraulic pipeline setting mechanism |
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 |
Granted publication date: 20100901 Termination date: 20160603 |