CN202117663U - Casing collar positioner - Google Patents
Casing collar positioner Download PDFInfo
- Publication number
- CN202117663U CN202117663U CN2011201947231U CN201120194723U CN202117663U CN 202117663 U CN202117663 U CN 202117663U CN 2011201947231 U CN2011201947231 U CN 2011201947231U CN 201120194723 U CN201120194723 U CN 201120194723U CN 202117663 U CN202117663 U CN 202117663U
- Authority
- CN
- China
- Prior art keywords
- positioning wedged
- pressing plate
- clamp block
- casing collar
- fixture block
- 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 - Lifetime
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Abstract
A casing collar positioner is used for detecting casing collar positions of underground continuous oil pipes of oil fields. Three axial grooves are evenly distributed on the outer wall of a body, a rectangular positioning clamp block is embedded into each axial groove of the body, and the bottom of each groove of the body is provided with a compression spring. The outer surface of each positioning clamp block is arc-shaped, an arc-shaped protrusion protruding outwards is arranged on the outer surface of the positioning clamp block, and the upper end and the lower end of the arc-shaped protrusion are provided with inclined planes. Upper clamp block pressing plates are arranged at the upper ends and the lower ends of the positioning clamp blocks and in the grooves of the body, the upper clamp block pressing plates are fixed into the grooves of the body through upper pins, and the upper clamp block pressing plates and lower clamp block pressing plates respectively block two ends of each positioning clamp block. The casing collar positioner has the advantage of capability of performing multiple thin stratum oil and gas well construction on continuous oil pipes to judge the positions of collars. The casing collar positioner realizes accurate positioning by the aid of a mechanical structure. Compared with an electronic collar positioner, the casing collar positioner is simple, durable and adaptable to complicated severe underground construction environments.
Description
Technical field
The utility model relates to technical field of tools under the coiled tubing equipment raise of oil field; Be particularly related to a kind of casing collar locator (CCL); This coiled tubing locator can be realized the accurate location of down-hole coiled tubing in sleeve pipe, and being applicable to needs accurately location coiled tubing, constructs like many thin layers perforating and fracturing.
Background technology
External coiled tubing has been widely used in operation fields such as oilfield drilling, completion, well workover, well logging.Coiled tubing drilling and coiled tubing fracturing technique are abroad in recent years two technology with fastest developing speed.
China is in and introduces and the test coiled tubing stage, but receives external restriction to the coiled tubing key technology, and more domestic special operations can't realize independently that the development of restriction China coiled tubing operation is accurately located in the coiled tubing down-hole.
At present; For some down-hole construction operation such as sand washing, gaslift etc., the depth counter that utilizes the coiled tubing implement to carry can meet the demands, but needs the pinpoint operation of coiled tubing for some; Like operations such as thin layer perforation, pressure breaks; The error in dipping of the depth localization device that the coiled tubing implement carries is too big, and the error of 1000m far can not meet the demands about 1.5m.
The utility model content
The purpose of the utility model is: a kind of casing collar locator (CCL) is provided, is applicable to the accurate positioning operation of coiled tubing in the oval retaining ring pipe, adopt the design of fixture block formula, realize the accurate location of coiled tubing in the down-hole.
The technical scheme that the utility model adopts is: casing collar locator (CCL); Mainly form by body, last fixture block pressing plate, pin, compression spring, positioning wedged block, following fixture block pressing plate and following pin; Body has centre bore for the cylinder bodily form; There is screw thread at two ends up and down at body, can be connected on the tubing string.It is characterized in that: on the outer wall of body, be evenly distributed with three axial notches, be embedded with a rectangle positioning wedged block at each axial notch of body; The compression spring is arranged at the bottom at each groove of body, and the compression spring can promote positioning wedged block and in body recess, slide.The external surface of positioning wedged block is a circular arc, the arc convex of oriented outer lug on the positioning wedged block external surface, and there is the inclined-plane at the two ends up and down of arc convex; Fixture block pressing plate in the groove of body and on the upper end of positioning wedged block has, pin will be gone up in the groove that the fixture block pressing plate is fixed on body; In the groove of body and in the lower end of positioning wedged block, following fixture block pressing plate is arranged, following pin will descend the fixture block pressing plate to be fixed in the groove of body; Last fixture block pressing plate blocks the positioning wedged block two ends respectively with following fixture block pressing plate; Last fixture block pressing plate and following fixture block pressing plate play the position-limiting action of positioning wedged block.Positioning wedged block can radially slide in the groove of body.
The two ends of described positioning wedged block have a cotter slot respectively, and pin passes cotter slot, and positioning wedged block slides and not influenced by pin.
The operating principle of casing collar locator (CCL), consult Fig. 2: coiled tubing upper joint sleeve pipe collar locator, and being lowered into below the sleeve pipe 8 box cupling positions, carry the box cupling position that coiled tubing is sought sleeve pipe 8 on slowly then.Consult Fig. 3.When the fixture block 5 of casing collar locator (CCL) runs in the casing coupling slit 9, can expand outwardly automatically under the promotion of the compression spring 4 of positioning wedged block 5, the arc convex of positioning wedged block 5 enters in the box cupling slit.When carrying coiled tubing in the continuation, the coiled tubing suspending weight at well head place can increase.Consult Fig. 4.When suspending weight is increased to 2～3 ton hours than normal value, the arc convex of positioning wedged block 5 can slippage the slit 9 in casing coupling, and the coiled tubing suspending weight at well head place is replied normal, on coiled tubing, does the spraying gauge point; Consult Fig. 3.Carry in the continuation, when running in another casing coupling slit 9, positioning wedged block 5 can expansion gets into arc convex and enters in the slit, causes the increase of coiled tubing suspending weight.Carry in the continuation and make suspending weight recover normal, on coiled tubing, do the spraying gauge point again, the distance according between twice spraying gauge point judges whether to find the short sleeve position.As do not find the short sleeve position, put in the continuation and put coiled tubing, till finding the short sleeve position.After finding the short sleeve position, be that the basis moves up and down the coiled tubing certain distance to target zone, carry out next step construction of coiled tubing, like perforation, pressure break etc. with the short sleeve position.Because of the short sleeve position near target zone, be no more than 200m usually, so the positioning accuracy of this casing collar locator (CCL) (200 * 1.5/1000) about 0.3m.
The beneficial effect of the utility model:
The first, this casing collar locator (CCL) can realize that the down-hole casing box cupling accurately locatees, and can carry out coiled tubing and carry out the position that many thin layer oils gas well construction operation is judged box cupling.Adopt frame for movement to realize accurately location, simpler, durable than electronics collar locator, be fit to complicated abominable down-hole construction environment.The second, positioning wedged block adopts different chamfering gradients up and down: little chamfering is adopted in the positioning wedged block lower end; Make coiled tubing in being lowered to process, can smoothly be lowered to, big chamfering is adopted in the positioning wedged block upper end, makes when carrying coiled tubing; Positioning wedged block has certain bearing capacity when getting in the casing coupling slit; During greater than this bearing capacity, positioning wedged block slippage in the slit in the casing coupling is automatically carried on can continuing.
Description of drawings
Fig. 1 is the utility model casing collar locator (CCL) structural profile sketch map.Sketch map during the fixture block expansion.
Fig. 2 is the sketch map of the utility model casing collar locator (CCL) when being in the casing coupling place.
Fig. 3 is the A-A generalized section of Fig. 1, the sketch map when being the positioning wedged block protrusion.
Fig. 4 is the A-A generalized section of Fig. 1, the sketch map when being the positioning wedged block contraction.
Among the figure, 1. body is 2. gone up the fixture block pressing plate, and 3. pin is 4. compressed spring, and 5. positioning wedged block 6. descends the fixture block pressing plate, 7. time pin, 8. sleeve pipe, 9. slit in the casing coupling.
The specific embodiment
Embodiment 1: with a casing collar locator (CCL) is example, and the utility model is done further explain.
Consult Fig. 1.The utility model casing collar locator (CCL), mainly by body 1, go up fixture block pressing plate 2, pin 3, compression spring 4, positioning wedged block 5, down fixture block pressing plate 6 and down pin 7 form, body 1 has centre bore for the cylinder bodily form, at the two ends up and down of body 1 screw thread is arranged.Evenly distribution on the outer wall of body 1 (120 degree phase place) has three outwards axial segments of protrusion, and a rectangular recess is arranged on each axial segments of body 1 outer wall.Each axial notch at body 1 is embedded with a rectangle positioning wedged block 5; Compression spring 4 is arranged in the bottom of each groove of body 1, and compression spring 4 can promote positioning wedged block 5 and in body 1 groove, slide.The external surface of positioning wedged block 5 is a circular arc, the arc convex of oriented outer lug on positioning wedged block 5 external surfaces, and there is the inclined-plane at the two ends up and down of arc convex; Fixture block pressing plate 2 in the groove of body 1 and on the upper end of positioning wedged block 5 has, pin 3 will be gone up in the groove that fixture block pressing plate 2 is fixed on body 1; In the groove of body 1 and in the lower end of positioning wedged block 5, following fixture block pressing plate 7 is arranged, following pin 7 will descend fixture block pressing plate 6 to be fixed in the groove of body 1; Last fixture block pressing plate 2 blocks positioning wedged block 5 two ends respectively with following fixture block pressing plate 6; The two ends of positioning wedged block 5 have a cotter slot respectively, and pin passes cotter slot, and positioning wedged block 5 slides and not influenced by pin.
Claims (2)
1. casing collar locator (CCL); Mainly by body (1), go up fixture block pressing plate (2), pin (3), compression spring (4), positioning wedged block (5), fixture block pressing plate (6) is formed with pin down (7) down; Body (1) has centre bore for the cylinder bodily form; There is screw thread at two ends up and down at body (1), it is characterized in that: on the outer wall of body (1), be evenly distributed with three axial notches, be embedded with a rectangle positioning wedged block (5) at each axial notch of body (1); Compression spring (4) is arranged at the bottom at each groove of body (1), and the external surface of positioning wedged block (5) is a circular arc, the arc convex of oriented outer lug on positioning wedged block (5) external surface, and there is the inclined-plane at the two ends up and down of arc convex; In the groove of body (1) and in the upper end of positioning wedged block (5), last fixture block pressing plate (2) is arranged, pin (3) will go up fixture block pressing plate (2) and be fixed in the groove of body (1); In the groove of body (1) and in the lower end of positioning wedged block (5), following fixture block pressing plate (7) is arranged, following pin (7) will descend fixture block pressing plate (6) to be fixed in the groove of body (1); Last fixture block pressing plate (2) and following fixture block pressing plate (6) block positioning wedged block (5) two ends respectively.
2. casing collar locator (CCL) according to claim 1 is characterized in that: the two ends of described positioning wedged block (5) have a cotter slot respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201947231U CN202117663U (en) | 2011-06-10 | 2011-06-10 | Casing collar positioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201947231U CN202117663U (en) | 2011-06-10 | 2011-06-10 | Casing collar positioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202117663U true CN202117663U (en) | 2012-01-18 |
Family
ID=45458736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201947231U Expired - Lifetime CN202117663U (en) | 2011-06-10 | 2011-06-10 | Casing collar positioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202117663U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103850676A (en) * | 2012-11-30 | 2014-06-11 | 中国石油集团川庆钻探工程有限公司 | Novel casing coupling positioner for coiled tubing |
| CN104563998A (en) * | 2014-09-04 | 2015-04-29 | 杰瑞能源服务有限公司 | Multistage fracturing tool pipe column of continuous oil pipe and construction method |
| CN104832158A (en) * | 2015-02-06 | 2015-08-12 | 西安海智机电设备有限公司 | Anti-sand mechanical coupling positioning tool |
| CN104989384A (en) * | 2015-04-09 | 2015-10-21 | 中国石油集团西部钻探工程有限公司 | Spring sheet type collar locator |
| CN106285643A (en) * | 2015-06-01 | 2017-01-04 | 中国石油天然气股份有限公司 | Casing collar locator (CCL) and casing coupling localization method |
| CN107120109A (en) * | 2017-06-05 | 2017-09-01 | 中国石油天然气股份有限公司 | A kind of split-type sands-proof check casing collar locator (CCL) |
| CN107724971A (en) * | 2017-11-21 | 2018-02-23 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of mechanical hoop locator and its application process |
| CN108571318A (en) * | 2017-03-09 | 2018-09-25 | 中国石油化工股份有限公司 | collar locator |
-
2011
- 2011-06-10 CN CN2011201947231U patent/CN202117663U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103850676A (en) * | 2012-11-30 | 2014-06-11 | 中国石油集团川庆钻探工程有限公司 | Novel casing coupling positioner for coiled tubing |
| CN104563998A (en) * | 2014-09-04 | 2015-04-29 | 杰瑞能源服务有限公司 | Multistage fracturing tool pipe column of continuous oil pipe and construction method |
| CN104832158A (en) * | 2015-02-06 | 2015-08-12 | 西安海智机电设备有限公司 | Anti-sand mechanical coupling positioning tool |
| CN104832158B (en) * | 2015-02-06 | 2017-08-25 | 西安海智机电设备有限公司 | Sand-proof type machinery box cupling positioning instrument |
| CN104989384B (en) * | 2015-04-09 | 2018-06-05 | 中国石油集团西部钻探工程有限公司 | Spring-piece type collar locator |
| CN104989384A (en) * | 2015-04-09 | 2015-10-21 | 中国石油集团西部钻探工程有限公司 | Spring sheet type collar locator |
| CN106285643A (en) * | 2015-06-01 | 2017-01-04 | 中国石油天然气股份有限公司 | Casing collar locator (CCL) and casing coupling localization method |
| CN106285643B (en) * | 2015-06-01 | 2019-06-11 | 中国石油天然气股份有限公司 | Casing collar locator (CCL) and casing coupling localization method |
| CN108571318A (en) * | 2017-03-09 | 2018-09-25 | 中国石油化工股份有限公司 | collar locator |
| CN108571318B (en) * | 2017-03-09 | 2021-04-20 | 中国石油化工股份有限公司 | Coupling positioner |
| CN107120109A (en) * | 2017-06-05 | 2017-09-01 | 中国石油天然气股份有限公司 | A kind of split-type sands-proof check casing collar locator (CCL) |
| CN107724971A (en) * | 2017-11-21 | 2018-02-23 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of mechanical hoop locator and its application process |
| CN107724971B (en) * | 2017-11-21 | 2024-01-23 | 中国石油天然气集团有限公司 | Mechanical joint hoop positioner and application method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120118 |
|
| CX01 | Expiry of patent term |