CN106703733A - Coiled tubing fishing method and fishing barrel - Google Patents
Coiled tubing fishing method and fishing barrel Download PDFInfo
- Publication number
- CN106703733A CN106703733A CN201510790225.6A CN201510790225A CN106703733A CN 106703733 A CN106703733 A CN 106703733A CN 201510790225 A CN201510790225 A CN 201510790225A CN 106703733 A CN106703733 A CN 106703733A
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- China
- Prior art keywords
- coiled tubing
- rotation block
- fishing socket
- block teeth
- fishing
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000003129 oil well Substances 0.000 claims abstract description 5
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Abstract
The invention discloses a coiled tubing fishing method and a fishing barrel. The fishing barrel comprises a fishing barrel body formed by connecting an upper joint, an intermediate cylinder and a lower joint. Two layers of clamping devices are arranged in the intermediate cylinder and the lower joint respectively. Each layer of the clamping devices is composed of three rotating teeth blocks evenly distributed on the inner wall of the fishing barrel body, and the rotating teeth blocks of the upper layer and lower layer of the clamping devices are arranged in a staggered mode. The rotating teeth blocks are rotatably arranged on supports of the intermediate cylinder or the inner wall of the lower joint through pin shafts after being configured with a torsion spring. In the fishing process, as long as the coiled tubing enters the fishing barrel, the coiled tubing must be in contact with at least one rotating teeth block on the lower layer of the clamping device and at least one rotating teeth block on the upper layer of the clamping device,, and thus the coiled tubing can be fished out from an oil well by being tightly gripped through two or more rotating teeth blocks in the fishing barrel body.
Description
Technical field
The present invention relates to a kind of coiled tubing Refloatation method and fishing socket, belong to Oil/gas Well underground fishing technical field.
Background technology
In recent years, in the maintenance process of Oil/gas Well, because its is easy to operate, the activity duration is short, remarkable in economical benefits, it uses more and more coild tubing unit.With the popularization and application of applications of coiled tubing unit, the situation that coiled tubing is broken in Oil/gas Well happens occasionally.
Present that external diameter is small, wall is thin due to coiled tubing, it is flexible big, yielding the characteristics of, and shape is generally irregular shape after coiled tubing fracture, therefore, be restricted using conventional salvaging mode operation, cause to salvage effect on driving birds is not good, fishing success ratio is low.And existing coiled tubing fishing socket is generally slips structure, and the fishing socket salvaging scope of slips structure is very limited, a kind of slips can only salvage a kind of coiled tubing of specification, when coiled tubing is when deforming big, cannot be salvaged using the fishing socket of slips structure, therefore, regarding to the issue above, scene is badly in need of a kind of fishing socket of new structure to solve these problems.
The content of the invention
It is an object of the invention to provide a kind of simple to operate, fishing success ratio is high, salvaging scope is wide coiled tubing Refloatation method and fishing socket, to overcome the deficiencies in the prior art.
Technical scheme：A kind of coiled tubing Refloatation method, two-layer is set first in fishing socket is used to salvage the gripping mechanism of coiled tubing, every layer of gripping mechanism is made up of three rotation block teeth being evenly distributed on fishing socket inwall, and the rotation block teeth of two-layer gripping mechanism are staggered up and down, torsion spring is installed on each rotation block teeth simultaneously, rotation block teeth can rotate and reset in the presence of torsion spring, therefore when coiled tubing is salvaged using fishing socket, as long as coiled tubing enters in fishing socket, coiled tubing will necessarily be contacted with least one rotation block teeth at least one rotation block teeth and upper strata gripping mechanism on lower floor gripping mechanism, so coiled tubing can tightly be blocked by two or more rotation block teeth in fishing socket, and then salvage to come from oil well by coiled tubing.Meanwhile, rotation briquetting rotating range is big, and deforming big coiled tubing can also push up out rotation block teeth, and at least contact clamping with two rotation block teeth, reach the function of salvaging large deformation coiled tubing.
Further, when coiled tubing is salvaged using fishing socket, setting spacing of the depth more than upper and lower two-layer gripping mechanism is salvaged every time.
A kind of coiled tubing fishing socket built by the above method, including the fishing socket that top connection, intermediate cylinder and lower contact are formed by connecting, two-layer gripping mechanism is respectively arranged with intermediate cylinder and lower contact, every layer of gripping mechanism is made up of three rotation block teeth for being evenly distributed on fishing socket inwall, and the rotation block teeth of two-layer gripping mechanism are staggered up and down, it is arranged on the bearing of intermediate cylinder or lower contact inwall by bearing pin after described rotation block teeth configuration torsion spring.
The front end of described rotation block teeth is provided with arc surface, and the arc surface is 20~40 ° with the angle α of fishing socket center line.
Preferably, described arc surface and the angle α of fishing socket center line are 25 °.
Sawtooth is provided with described rotation block teeth front end both sides and arc surface.
The insertion end of described bearing pin is provided with split pin.
By adopting the above-described technical solution, the advantage of the invention is that：The present invention salvages coiled tubing by the rotation block teeth on double-deck gripping mechanism in fishing socket, because the rotation block teeth of upper and lower two-layer gripping mechanism are staggered, during salvaging, as long as coiled tubing enters in fishing socket, coiled tubing will necessarily be contacted with least one rotation block teeth at least one rotation block teeth and upper strata gripping mechanism on lower floor gripping mechanism, so coiled tubing can tightly be bitten by two or more rotation block teeth in fishing socket, and then coiled tubing is salvaged from oil well.Meanwhile, rotation briquetting rotating range is big, and deforming big coiled tubing can also push up out rotation block teeth, and at least contact clamping with two rotation block teeth, reach the function of salvaging large deformation coiled tubing.Further, since be provided with sawtooth on rotation block teeth, when coiled tubing fishing socket is lifted, rotation block teeth by the sawtooth of arc surface or side by coiled tubing be engaged it is more and more tighter, it is to avoid coiled tubing slides during salvaging, raising fishing success ratio.Therefore, the present invention have the advantages that simple to operate, easy to use, fishing success ratio it is high, salvage scope it is wide, be particularly suitable for Oil/gas Well salvaging large deformation fracture coiled tubing use.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is the A-A sectional views of Fig. 1；
Fig. 3 is the B-B sectional views of Fig. 1；
Fig. 4 is the top view of the structural representation of rotation block teeth in the present invention；
Fig. 5 is the C-C sectional views of Fig. 4；
Fig. 6 is the E enlarged drawings of Fig. 5.
Description of reference numerals：1- top connections, 2- rotation block teeth, 2.1- arc surfaces, 2.2- sawtooth, 3- bearing pins, 4- split pins, 5- torsion springs, 6- intermediate cylinders, 7- lower contacts, 8- bearings.
Specific embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, the present invention is described in further detail with reference to the accompanying drawings and examples.
Embodiments of the invention：The structural representation of coiled tubing fishing socket is as shown in Figures 1 to 3, including the fishing socket that top connection 1, intermediate cylinder 6 and lower contact 7 are formed by connecting, two-layer gripping mechanism is respectively arranged with intermediate cylinder 6 and lower contact 7, the axial spacing of two-layer gripping mechanism is 300mm, and is arranged on oral area 100mm of the gripping mechanism in lower contact 7 apart from lower contact 7；Every layer of gripping mechanism is made up of three 2 pieces of rotating grippers for being evenly distributed on fishing socket inwall, and the rotation block teeth 2 of two-layer gripping mechanism are staggered up and down, it is rotatably mounted on the bearing 8 of intermediate cylinder 6 or the inwall of lower contact 7 by bearing pin 3 after described rotation block teeth 2 configuration torsion spring 5；The insertion end of described bearing pin 3 is provided with split pin 4, prevents rotation block teeth 2 from being come off from bearing 8.Referring to Fig. 4 and Fig. 5, the front end of described rotation block teeth 2 is provided with arc surface 2.1, and the arc surface 2.1 is 25 ° with the angle α of the center line of fishing socket.Referring to Fig. 6, sawtooth 2.2 is provided with the described front end both sides of rotation block teeth 2 and arc surface 2.1.
When coiled tubing is salvaged using fishing socket, the distance that depth should be greater than the gripping mechanism that is arranged in intermediate cylinder 6 to the oral area of lower contact 7 is salvaged every time, i.e., more than 400mm.Therefore, as long as coiled tubing enters in fishing socket, coiled tubing will necessarily be contacted with least one rotation block teeth 2 on gripping mechanism at least one rotation block teeth 2 and intermediate cylinder 6 on gripping mechanism in lower contact 7, during coiled tubing is contacted with rotation block teeth 2, rotation block teeth 2 start to be rotated around bearing pin 3, until the arc surface 2.1 of rotation block teeth 2 front end is fitted in coiled tubing surface, when coiled tubing is lifted, due to being provided with sawtooth 2.2 on arc surface 2.1, so that rotation block teeth 2 by sawtooth 2.2 by coiled tubing be engaged it is more and more tighter, so coiled tubing can tightly be bitten by two or more rotation block teeth 2 in fishing socket, and then salvage to come from oil well by coiled tubing.
Claims (7)
1. a kind of coiled tubing Refloatation method, it is characterised in that：Two-layer is set first in fishing socket is used to salvage the gripping mechanism of coiled tubing, every layer of gripping mechanism is made up of three rotation block teeth being evenly distributed on fishing socket inwall, and the rotation block teeth of two-layer gripping mechanism are staggered up and down, torsion spring is installed on each rotation block teeth simultaneously, rotation block teeth can rotate and reset in the presence of torsion spring, therefore when coiled tubing is salvaged using fishing socket, as long as coiled tubing enters in fishing socket, coiled tubing will necessarily be contacted with least one rotation block teeth at least one rotation block teeth and upper strata gripping mechanism on lower floor gripping mechanism, so coiled tubing can tightly be blocked by two or more rotation block teeth in fishing socket, and then salvage to come from oil well by coiled tubing.
2. coiled tubing Refloatation method according to claim 1, it is characterised in that：When coiled tubing is salvaged using fishing socket, setting spacing of the depth more than upper and lower two-layer gripping mechanism is salvaged every time.
3. the coiled tubing fishing socket that a kind of coiled tubing Refloatation method as described in claim 1 or 2 builds, including top connection（1）, intermediate cylinder（6）And lower contact（7）The fishing socket being formed by connecting, it is characterised in that：In intermediate cylinder（6）And lower contact（7）Two-layer gripping mechanism is inside respectively arranged with, every layer of gripping mechanism is by three rotation block teeth for being evenly distributed on fishing socket inwall（2）Constitute, and the rotation block teeth of two-layer gripping mechanism up and down（2）It is staggered, described rotation block teeth（2）Configuration torsion spring（5）Pass through bearing pin afterwards（3）It is rotatably mounted on intermediate cylinder（6）Or lower contact（7）The bearing of inwall（8）On.
4. coiled tubing fishing socket according to claim 3, it is characterised in that：Described rotation block teeth（2）Front end be provided with arc surface（2.1）, the arc surface（2.1）It it is 20~40 ° with the angle α of fishing socket center line.
5. coiled tubing fishing socket according to claim 4, it is characterised in that：Described arc surface（2.1）It it is 25 ° with the angle α of fishing socket center line.
6. coiled tubing fishing socket according to claim 4, it is characterised in that：Described rotation block teeth（2）Front end both sides and arc surface（2.1）On be provided with sawtooth（2.2）.
7. coiled tubing fishing socket according to claim 3, it is characterised in that：Described bearing pin（3）Insertion end be provided with split pin（4）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510790225.6A CN106703733A (en) | 2015-11-17 | 2015-11-17 | Coiled tubing fishing method and fishing barrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510790225.6A CN106703733A (en) | 2015-11-17 | 2015-11-17 | Coiled tubing fishing method and fishing barrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106703733A true CN106703733A (en) | 2017-05-24 |
Family
ID=58933360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510790225.6A Pending CN106703733A (en) | 2015-11-17 | 2015-11-17 | Coiled tubing fishing method and fishing barrel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106703733A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533204A (en) * | 2018-07-06 | 2018-09-14 | 西安荣达石油工程有限公司 | A kind of fishing socket |
| CN112112594A (en) * | 2020-09-22 | 2020-12-22 | 朱鸿磊 | Petroleum instrument fishing device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2254951Y (en) * | 1996-04-20 | 1997-05-28 | 胜利石油管理局临盘采油厂 | Eccentric active cover type overshot for gripping sucker rod |
| CN2345314Y (en) * | 1998-03-04 | 1999-10-27 | 平顶山煤业(集团)有限责任公司技术中心 | Hydraulic clamping device |
| US20120111556A1 (en) * | 2010-11-08 | 2012-05-10 | Baker Hughes Incorporated | Casing Spears and Related Systems and Methods |
| CN203394409U (en) * | 2013-03-14 | 2014-01-15 | 中国石油天然气集团公司 | Windowed hinge-type overshot |
| CN103742090A (en) * | 2013-12-31 | 2014-04-23 | 大庆市福万通石油科技有限公司 | Large-drift-diameter hydraulic anchor |
| CN104110229A (en) * | 2014-06-04 | 2014-10-22 | 成都来宝石油设备有限公司 | Claw-type downhole fishhook for petroleum well |
| CN104165035A (en) * | 2013-05-17 | 2014-11-26 | 贵州航天凯山石油仪器有限公司 | Blanking plug clamping and positioning method and device |
| CN104500004A (en) * | 2014-10-31 | 2015-04-08 | 中国石油化工股份有限公司 | Oil-water well perforating gun pulling device operating under pressure |
| CN204327025U (en) * | 2014-12-16 | 2015-05-13 | 刘和强 | Spring window cutting dipper |
-
2015
- 2015-11-17 CN CN201510790225.6A patent/CN106703733A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2254951Y (en) * | 1996-04-20 | 1997-05-28 | 胜利石油管理局临盘采油厂 | Eccentric active cover type overshot for gripping sucker rod |
| CN2345314Y (en) * | 1998-03-04 | 1999-10-27 | 平顶山煤业(集团)有限责任公司技术中心 | Hydraulic clamping device |
| US20120111556A1 (en) * | 2010-11-08 | 2012-05-10 | Baker Hughes Incorporated | Casing Spears and Related Systems and Methods |
| CN203394409U (en) * | 2013-03-14 | 2014-01-15 | 中国石油天然气集团公司 | Windowed hinge-type overshot |
| CN104165035A (en) * | 2013-05-17 | 2014-11-26 | 贵州航天凯山石油仪器有限公司 | Blanking plug clamping and positioning method and device |
| CN103742090A (en) * | 2013-12-31 | 2014-04-23 | 大庆市福万通石油科技有限公司 | Large-drift-diameter hydraulic anchor |
| CN104110229A (en) * | 2014-06-04 | 2014-10-22 | 成都来宝石油设备有限公司 | Claw-type downhole fishhook for petroleum well |
| CN104500004A (en) * | 2014-10-31 | 2015-04-08 | 中国石油化工股份有限公司 | Oil-water well perforating gun pulling device operating under pressure |
| CN204327025U (en) * | 2014-12-16 | 2015-05-13 | 刘和强 | Spring window cutting dipper |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533204A (en) * | 2018-07-06 | 2018-09-14 | 西安荣达石油工程有限公司 | A kind of fishing socket |
| CN112112594A (en) * | 2020-09-22 | 2020-12-22 | 朱鸿磊 | Petroleum instrument fishing device |
| CN112112594B (en) * | 2020-09-22 | 2024-01-30 | 杨晓峰 | Petroleum instrument salvaging device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170524 |