CN102966322A - Method for dropping and fishing tubing plug - Google Patents
Method for dropping and fishing tubing plug Download PDFInfo
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- CN102966322A CN102966322A CN2012105466348A CN201210546634A CN102966322A CN 102966322 A CN102966322 A CN 102966322A CN 2012105466348 A CN2012105466348 A CN 2012105466348A CN 201210546634 A CN201210546634 A CN 201210546634A CN 102966322 A CN102966322 A CN 102966322A
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- tubing plug
- fishing tool
- fishing
- tubing
- plug
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Abstract
The invention relates to the technical field of oil and gas field reservoir transform, and relates to one of important workings in under-pressure drill fishing after well fracturing is accomplished, in particular to a method for dropping and fishing a tubing plug. The method is characterized in that the fishing of the tubing plug and a fishing tool is realized by pumping the tubing plug and the fishing tool with the combination of the recoil function; and the method for dropping and fishing the tubing plug comprises three steps of pumping the dropped tubing plug, pumping the fishing tool, and recoiling and reclaiming the tubing plug and the fishing tool. By utilizing the method, an original traditional method for dropping and fishing the tubing plug by using a steel wire winch is changed, and the dropping and the fishing of the tubing plug are realized through the pumping and the recoiling.
Description
Technical field
The present invention relates to oil gas field stimulation technology field, is one of underground work important in the complete rear trip-out with pressure of wellfracturing, particularly a kind of pulling method of tubing plug.
Background technology
Along with the expansion of pressure break scale, jetting and two envelope choosing be pressed in pressure break complete after, for release pressure drags safely tubing string, every lamination split complete after, all need open flow, about 3 ~ 6 hours of its open flow time, cause like this inefficiency, manpower cause a large amount of wastes.
In order to improve operating efficiency, shorten the open flow time between fractured layer, we adopt and drag tubing string under low-pressure states, when open flow during to 15MPa, drop into tubing plug, the investing method of former oil pipe blocking device adopts winch wire that blanking plug is sent into and is located the joint, and carries out jarring, be located location, joint and the realization obstruction to oil pipe, annular space is sealed by preventer.After dragging tubing string and putting in place, the fishing oil pipe blanking plug, former salvaging mode also is to adopt winch wire that blanking plug is salvaged.Like this winch wire has all been adopted in the pulling process of tubing plug, strengthened the pulling cost, and increased the complexity of process, for the operation has brought very big inconvenience.
We have designed a kind of pulling method of tubing plug for this reason, salvage this problem that solves by pumping input and recoil.
Summary of the invention
The pulling method that the purpose of this invention is to provide a kind of tubing plug changes the method for original traditional winch wire pulling tubing plug, realizes input and the salvaging of tubing plug by pumping and recoil.
Technical scheme of the present invention is a kind of pulling method of tubing plug, it is characterized in that: by pumping tubing plug and fishing tool, and cooperate the recoil effect to realize the salvaging of tubing plug and fishing tool, the implementation step of the pulling method of this tubing plug is as follows:
The arranged outside of described tubing plug has claw, and claw is stuck in the draw-in groove that is located joint; The inside of tubing plug is provided with one way valve, and the lower end is provided with the sealed packing combination, and the sealed packing combination cooperates the sealing that realizes in the oil pipe with the short circuit that is located that is located joint; Tubing plug 1 upper end is provided with fishing head, cooperates with the bailer grab of fishing tool.
Described fishing tool is a kind of backpulsing tubing plug fishing tool, it is to transform on the basis of original fishing tool, and utilize the recoil effect to realize that this fishing tool comprises former fishing tool body, connecting rod, leather cup, positioning screw cap and fishing head at least; The end of connecting rod is fixedly connected with former fishing tool body by screw thread; Leather cup is sleeved on the outside of connecting rod and fixes by positioning screw cap; Fishing head is arranged on the front end of connecting rod, fixes by screw thread and connecting rod.
The bottom of described former fishing tool body is provided with bailer grab, and there is interpolation pole inside.
Characteristics of the present invention are to realize input and the salvaging of tubing plug by pumping and recoil, have saved the cost of pulling process, and simple to operate, job safety; A kind of fishing tool that utilizes the recoil effect is provided simultaneously, and it is simple in structure, and operability is high.
Description of drawings
The present invention is further illustrated below in conjunction with embodiment:
Fig. 1 is the schematic diagram that pumping drops into tubing plug;
Fig. 2 is the schematic diagram of pumping fishing tool;
Fig. 3 is the structural representation of fishing tool;
Fig. 4 is the schematic diagram of recoil fishing tool and tubing plug.
Among the figure: 1, tubing plug; 101, claw; 102, one way valve; 103, sealed packing combination; 104, the fishing head of tubing plug; 2, fishing tool; 201, connecting rod; 202, leather cup; 203, positioning screw cap; 204, the fishing head of fishing tool; 205, former fishing tool body; 206, bailer grab; 207, interpolation pole; 3, be located joint; 301, draw-in groove.
The specific embodiment
A kind of pulling method of tubing plug, it is by pumping tubing plug 1 and fishing tool 2, and cooperates the recoil effect to realize the salvaging of tubing plug 1 and fishing tool 2.
The implementation step of the pulling method of this tubing plug is as follows:
The arranged outside of tubing plug 1 has claw 101, and claw 101 is stuck in the draw-in groove 301 that is located joint, and claw 101 cooperates with draw-in groove 301 makes tubing plug 1 locate at tube inner wall.
The inside of tubing plug 1 is provided with one way valve 102, and one way valve 102 can prevent the pump accident of suppressing that causes effectively in pumping procedure.
The lower end is provided with sealed packing combination 103, and sealed packing combination 103 cooperates the sealing that realizes in the oil pipe with the short circuit that is located that is located joint 3.
According to the mode of step 1, tubing plug 1 is dropped in the oil pipe, and realize the location sealing of tubing plug 1.
As shown in Figure 3, fishing tool 2 is a kind of backpulsing tubing plug fishing tools, and it is to transform on the basis of original fishing tool, and utilizes the recoil effect to realize.
This fishing tool comprises former fishing tool body 205, connecting rod 201, leather cup 202, positioning screw cap 203 and fishing head 204 at least; The end of connecting rod 201 is fixedly connected with former fishing tool body 205 by screw thread; Leather cup 202 is sleeved on the outside of connecting rod 201 and fixes by positioning screw cap 203; Fishing head 204 is arranged on the front end of connecting rod 201, and is fixing by screw thread and connecting rod 201.
The bottom of former fishing tool body 205 is provided with bailer grab 206, there is interpolation pole 207 inside, bailer grab is grabbed 104 with the fishing head of tubing plug 1 and is firmly made, and tubing plug 1 is fixedly connected with fishing tool 2, and interpolation pole inserts the withdrawal of tubing plug 1 interior realization claw 101.
This moment is in oil pipe under the recoil effect of liquid, the leather cup 202 of fishing tool 2 is subject to the recoil active force that the oil pipe internal liquid makes progress and opens, seal with tube inner wall, because leather cup 202 sealings, recoil strength is increased, and when recoil strength was enough large, leather cup 202 continued to support, fishing tool 2 and tubing plug 1 will be up along oil pipe so, until go out oil pipe.
The parts that present embodiment is not described in detail and structure belong to well-known components and common structure or the conventional means of the industry, here not one by one narration.
Claims (4)
1. the pulling method of a tubing plug, it is characterized in that: by pumping tubing plug (1) and fishing tool (2), and cooperate the recoil effect to realize the salvaging of tubing plug (1) and fishing tool (2), the implementation step of the pulling method of this tubing plug is as follows:
Step 1, pumping drops into tubing plug (1); Drop into tubing plug (1) by pumping, make tubing plug (1) locate in being located joint (3) and seal, the claw of tubing plug is stuck in the draw-in groove (301) that is located joint;
Step 2, pumping fishing tool (2); Drop into fishing tool (2) by pumping, make the bailer grab (206) of fishing tool (2) catch the fishing head (104) of tubing plug (1), and its interpolation pole inserts tubing plug (1), the claw (101) of tubing plug 1 is regained;
Step 3, tubing plug and fishing tool are reclaimed in recoil; Because the claw (101) of tubing plug (1) is regained in the step 2, and be located joint (3) and separate; Simultaneously the leather cup (202) of fishing tool (2) is subject to the recoil active force that the oil pipe internal liquid makes progress and opens, seal with tube inner wall, when recoil strength is enough large, fishing tool (2) and tubing plug (1) will be up along oil pipe, until go out oil pipe.
2. the pulling method of a kind of tubing plug described in according to claim 1, it is characterized in that: the arranged outside of described tubing plug (1) has claw (101), and claw (101) is stuck in the draw-in groove (301) that is located joint; The inside of tubing plug 1 is provided with one way valve (102), and the lower end is provided with sealed packing combination (103), and sealed packing combination (103) cooperates the sealing that realizes in the oil pipe with the short circuit that is located that is located joint (3); Tubing plug (1) upper end is provided with fishing head (104), cooperates with the bailer grab (206) of fishing tool (2).
3. the pulling method of a kind of tubing plug described in according to claim 1, it is characterized in that: described fishing tool (2) is a kind of backpulsing tubing plug fishing tool, it is to transform on the basis of original fishing tool, and utilize the recoil effect to realize that this fishing tool comprises former fishing tool body (205), connecting rod (201), leather cup (202), positioning screw cap (203) and fishing head (204) at least; The end of connecting rod (201) is fixedly connected with former fishing tool body (205) by screw thread; Leather cup (202) is sleeved on the outside of connecting rod (201) and fixes by positioning screw cap (203); Fishing head (204) is arranged on the front end of connecting rod (201), and is fixing by screw thread and connecting rod (201).
4. the pulling method of a kind of tubing plug described in according to claim 3, it is characterized in that: the bottom of described former fishing tool body (205) is provided with bailer grab (206), and there is interpolation pole (207) inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210546634.8A CN102966322B (en) | 2012-12-17 | 2012-12-17 | A kind of pulling method of tubing plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210546634.8A CN102966322B (en) | 2012-12-17 | 2012-12-17 | A kind of pulling method of tubing plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102966322A true CN102966322A (en) | 2013-03-13 |
| CN102966322B CN102966322B (en) | 2015-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210546634.8A Active CN102966322B (en) | 2012-12-17 | 2012-12-17 | A kind of pulling method of tubing plug |
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| Country | Link |
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| CN (1) | CN102966322B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089141A (en) * | 2016-07-27 | 2016-11-09 | 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 method implementing back-off salvaging at net horizontal section |
| CN106593343A (en) * | 2016-12-15 | 2017-04-26 | 中国石油天然气股份有限公司 | Preset soluble sleeve blanking plug and using method thereof |
| CN111720086A (en) * | 2020-07-08 | 2020-09-29 | 中国石油天然气集团有限公司 | Impact type pipe end plugging device and using method |
| CN114439423A (en) * | 2020-11-06 | 2022-05-06 | 中国石油化工股份有限公司 | Pumping type oil pipe plugging valve |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4708208A (en) * | 1986-06-23 | 1987-11-24 | Baker Oil Tools, Inc. | Method and apparatus for setting, unsetting, and retrieving a packer from a subterranean well |
| CN2419369Y (en) * | 1999-11-23 | 2001-02-14 | 新疆石油管理局采油工艺研究院 | Oil pipe plug |
| CN201103373Y (en) * | 2007-11-01 | 2008-08-20 | 吐哈石油勘探开发指挥部工程技术研究院 | Oil pipe plugging device for oil-gas field |
-
2012
- 2012-12-17 CN CN201210546634.8A patent/CN102966322B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4708208A (en) * | 1986-06-23 | 1987-11-24 | Baker Oil Tools, Inc. | Method and apparatus for setting, unsetting, and retrieving a packer from a subterranean well |
| CN2419369Y (en) * | 1999-11-23 | 2001-02-14 | 新疆石油管理局采油工艺研究院 | Oil pipe plug |
| CN201103373Y (en) * | 2007-11-01 | 2008-08-20 | 吐哈石油勘探开发指挥部工程技术研究院 | Oil pipe plugging device for oil-gas field |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089141A (en) * | 2016-07-27 | 2016-11-09 | 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 method implementing back-off salvaging at net horizontal section |
| CN106593343A (en) * | 2016-12-15 | 2017-04-26 | 中国石油天然气股份有限公司 | Preset soluble sleeve blanking plug and using method thereof |
| CN106593343B (en) * | 2016-12-15 | 2023-02-24 | 中国石油天然气股份有限公司 | Preset soluble sleeve blanking plug and using method thereof |
| CN111720086A (en) * | 2020-07-08 | 2020-09-29 | 中国石油天然气集团有限公司 | Impact type pipe end plugging device and using method |
| CN111720086B (en) * | 2020-07-08 | 2024-01-19 | 中国石油天然气集团有限公司 | Impact type pipe end blanking plug and use method thereof |
| CN114439423A (en) * | 2020-11-06 | 2022-05-06 | 中国石油化工股份有限公司 | Pumping type oil pipe plugging valve |
| CN114439423B (en) * | 2020-11-06 | 2024-04-05 | 中国石油化工股份有限公司 | Pumping type oil pipe blocking valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102966322B (en) | 2015-07-29 |
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