CN202300306U - Oil pipe detecting and blanking plug - Google Patents
Oil pipe detecting and blanking plug Download PDFInfo
- Publication number
- CN202300306U CN202300306U CN 201120339298 CN201120339298U CN202300306U CN 202300306 U CN202300306 U CN 202300306U CN 201120339298 CN201120339298 CN 201120339298 CN 201120339298 U CN201120339298 U CN 201120339298U CN 202300306 U CN202300306 U CN 202300306U
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- CN
- China
- Prior art keywords
- oil pipe
- blanking plug
- packing element
- pressure transmission
- anchor
- 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
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Abstract
The utility model discloses an oil pipe detecting and blanking plug, which is applicable to the detection of an oil pipe leakage point, plugging of an oil pipe, improvement on pipe column plugging success rate, and guarantee of safety production in oil-water well pressurized operation in oil industry. The oil pipe detecting and blanking plug includes a rubber barrel part and an anchored part, wherein the blanking plug is provided with an internal pressure transmitting channel and a releasing part; the anchored part is welded between the releasing part and the rubber barrel part; the internal pressure transmitting channel is used for pressure transmission, so as to integrate fishing and pressurizing. The oil pipe detecting and blanking plug is free from the influence of stratum shifting through the seat seal of the internal pressure transmitting channel, can effectively find out the leakage point of a well with the seriously-corroded pipe column, effectively verifies special well conditions as falling off of the lower oil pipe of the oil pipe hanger and the damaging of the hanger, and improves the plugging success rate. The oil pipe detecting and blanking plug is connected with the ground hydraulic test pump through the capillary tube, utilizes the capillary tube to communicate the internal pressure transmitting channel in the blanking plug, firstly verifies the oil pipe leakage point and then the plugs the oil pipe, so as to integrate pipe verifying and plugging.
Description
Technical field
The utility model relates to the well control instrument of petroleum industry underground work, and particularly a kind of oil pipe is tested the pipe blanking plug, and check oil pipe leak source, shutoff oil pipe improve tubing string and stop up success rate when being applicable to oil water well working with pressure, ensure safety in production.
Background technology
It is to deliver blanking plug to desired depth through the pulling car that existing oil water well working with pressure oil pipe stops up technology; Just suppressing through oil pipe and to set blanking plug shutoff oil pipe; Have following shortcoming: the blanking plug that 1, uses at present mainly is made up of critical pieces such as slips, packing element, snap ring, shear pins, and its principle is to cut off through the oil pipe internal pressure to set shear pin, struts slips; Make packing element expand the shutoff oil pipe.After setting, can not deblocking change the setting position, can only go up after operation proposes oil pipe, carry out deblocking with special-purpose deblocking instrument; Can not repeatedly set deblocking and realize testing the pipe function.Because oil pipe stops up technology and does not test the pipe function, lacks and test plumber's preface; Exist under the situation that leak source or boll-weevil hanger damage when running into tubing string, can't judge the leak source position, can only repeatedly throw stifled blindly; Have a strong impact on oil pipe and stopped up success rate, increased construction cost; 2, to set mode single for present blanking plug, can only set blanking plug through the oil pipe internal pressure, when running into the serious well of stratum string layer; Oil pipe is suppressed the pressure that sets that does not reach blanking plug; So that can't the shutoff oil pipe, can't carry out Operating Pressure, can only carry out kill-job; Cause formation contaminant, influence oil well output.
Summary of the invention
The purpose of the utility model provides a kind of oil pipe and tests the pipe blanking plug, overcomes the defective of prior art, makes blanking plug not only have the pipe of testing function, has the function of stopping up oil pipe simultaneously, and pipe is tested in realization, obstruction is integrated.Convenient construction improves the success rate that oil pipe stops up.
The technical solution of the utility model is:
A kind of oil pipe is tested the pipe blanking plug and is comprised packing element part and anchor portion, and blanking plug is provided with inner pressure transmission passage and gives up part, anchor portion is welded on gives up between part and the packing element part, uses the pressure transmission of inner pressure transmission passage, realizes that pulling suppresses integrated.
The utility model compared with prior art is to seal through the inside pressure transmission channel seat of testing the pipe blanking plug, not influenced by stratum string layer, has overcome the shortcoming or the deficiency of above-mentioned prior art effectively, has following advantage:
1, can effectively find out the leak source of the serious well of tube corrosion, effectively verify special hole conditions such as oil pipe comes off under the boll-weevil hanger, hanger damage, improve the shutoff success rate;
2, test Lou shutoff function integration, testing Lou can give up after the success at once stops up the construction of oil pipe;
3, adopt capillary tube to suppress the seat envelope, solved use plain tubing forehand wedge envelope mode because of the serious well of formation leakage can't the seat envelope problem, pulling is simultaneously suppressed integrated, has effectively improved efficiency of construction, has practiced thrift construction cost;
4, use eccentric anchor and realize the anchor fluke grappling under the minor diameter, it is little to test pipe blanking plug external diameter, has solved because of fouling, wax deposition, and the well head gate is opened and do not caused throwing the stifled problem that is hampered entirely;
5, select the high strength packing element for use, high temperature resistant like hydrogenation butadiene acrylonitrile rubber tube, guaranteed to test the envelope quality.
Description of drawings
Fig. 1 is the structural representation that the utility model is tested the pipe blanking plug.
Fig. 2 be A-A shown in Figure 1 to structural representation.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is done further detailed description: consult Fig. 1; A kind of oil pipe is tested the pipe blanking plug and is comprised packing element part and anchor portion; Blanking plug is provided with inner pressure transmission passage and gives up part, anchor portion is welded on gives up between part and the packing element part.The part of giving up comprises rope socket 1 and pressure transmission valve, and rope socket 1 is provided with the entrance pressure hole, and rope socket 1 is connected with the valve body 7 of pressure transmission valve through the shear pin 2 of giving up.The pressure transmission valve comprises push rod 3, spool 5 and valve body 7, and valve body 7 is provided with push rod installing hole and valve pocket, spring 6 be arranged in spool 5 the below, be installed in valve pocket, spool 5 is connected with push rod 3 in the push rod installing hole; Push rod 3 is provided with pressure transmission mouth 4, and pressure transmission mouth 4 is communicated with valve pocket.Anchor portion comprises eccentric anchor 8 and anchor body, and eccentric anchor 8 is installed in the eccentric anchor installation cavity of anchor body, on the anchor body, is provided with pressure transmission through hole 9, and pressure transmission through hole 9 is communicated with eccentric anchor installation cavity, sees Fig. 2.Eccentric anchor 8 comprises anchor fluke 16, spring base and spring 15, and the cylindrical of spring base is provided with sealing ring, and spring 15 is installed between anchor fluke 16 and the spring base.Packing element partly comprises packing element 12 and packing element central tube 11, and packing element top connection 10, packing element 12 and packing element lower contact 13 are installed in the outside of packing element central tube 11 successively.The inside pressure transmission passage of testing the pipe blanking plug comprises push rod 3, pressure transmission through hole 9 and packing element central tube 11, and push rod 3 is communicated with pressure transmission through hole 9 and packing element central tube 11 through pressure transmission mouth 4 and valve pocket.Below packing element part, connect weighted lever 14, weighted lever 14 and packing element lower contact 13 are through being threaded, and weighted lever 14 can be accelerated the lowering velocity of blanking plug.
The practical implementation step of the utility model is following:
The pipe blanking plug is tested in delivery
Rope socket 1 is connected with valve body 7 through the shear pin 2 of giving up; Be connected through capillary tube between rope socket 1 and the hydraulic test pump; Realized being connected of this blanking plug and ground hydraulic test pump; Blanking plug is lowered in the lubricator, with capillary tube blanking plug is lowered into assigned address, capillary tube is the hollow metal tube of external diameter less than 6mm;
Checking oil pipe leak source
Suppress through the ground hydraulic test pump, the capillary tube pressure transmission is suppressed the seat envelope through inner pressure transmission passage to testing the pipe blanking plug.After blanking plug was lowered into assigned address, hydraulic test pump was suppressed the entrance pressure mouth through capillary tube pressure transmission to rope socket 1, reached the pressure transmission mouth 4 on the push rod 3, and pressure gets into pressure transmission through hole 9 through valve pocket again by the valve pocket of pressure transmission mouth 4 entering valve bodies 7, and eccentric anchor 8 is opened.Pressure reaches packing element central tube 11 by the pressure transmission through hole 9 on the anchor body, makes packing element 12 expand the shutoff oil pipe of not giving up.Open blooie pipe draining overflow mouth place and observe this moment, if any overflow, verifies that then there is leak source in the above oil pipe in this position; As do not have overflow, verify that then the above oil pipe in this position does not have leak source.Eccentric anchor 8 and packing element 12 deblockings are regained in ground hydraulic test pump release.After the pulling car change position of hydraulic test pump is housed, continue said procedure checking leak source, until finding leak source.
Stop up oil pipe
To test the pipe blanking plug earlier and be lowered into preparatory block-up position, suppress through the ground hydraulic test pump again.Through the capillary tube pressure transmission, suppress to the pressure of giving up of testing the pipe blanking plug, cut off the shear pin 2 of giving up, overhead-valve core 5 on the spring 6, sealing pressure transmission mouth 4 makes and tests pipe blanking plug internal pressure and can't release, and will test the pipe blanking plug and give up the shutoff oil pipe.The pulling car proposes rope socket 1, accomplishes the construction of stopping up oil pipe.
Claims (8)
1. an oil pipe is tested the pipe blanking plug, comprises packing element part and anchor portion, it is characterized in that this blanking plug is provided with inner pressure transmission passage and gives up part, anchor portion is welded on gives up between part and the packing element part.
2. a kind of oil pipe according to claim 1 is tested the pipe blanking plug, it is characterized in that the described part of giving up comprises rope socket (1) and pressure transmission valve, and rope socket (1) is provided with the entrance pressure hole, and rope socket (1) is connected with the valve body (7) of pressure transmission valve through the shear pin of giving up (2).
3. a kind of oil pipe according to claim 2 is tested the pipe blanking plug; It is characterized in that the pressure transmission valve comprises push rod (3), spool (5) and valve body (7); Valve body (7) is provided with push rod installing hole and valve pocket; Spring (6) be arranged in spool (5) the below, be installed in valve pocket, spool (5) is connected with push rod (3) in the push rod installing hole; Push rod (3) is provided with pressure transmission mouth (4), and pressure transmission mouth (4) is communicated with valve pocket.
4. a kind of oil pipe according to claim 1 is tested the pipe blanking plug; It is characterized in that anchor portion comprises eccentric anchor (8) and anchor body; Eccentric anchor (8) is installed in the eccentric anchor installation cavity of anchor body, on the anchor body, is provided with pressure transmission through hole (9), and pressure transmission through hole (9) is communicated with eccentric anchor installation cavity.
5. a kind of oil pipe according to claim 4 is tested the pipe blanking plug, it is characterized in that said eccentric anchor (8) comprises anchor fluke (16), spring base and spring (15), and the cylindrical of spring base is provided with sealing ring, and spring (15) is installed between anchor fluke (16) and the spring base.
6. a kind of oil pipe according to claim 1 is tested the pipe blanking plug, it is characterized in that packing element partly comprises packing element (12) and packing element central tube (11), and packing element top connection (10), packing element (12) and packing element lower contact (13) are installed in the outside of packing element central tube (11) successively.
7. a kind of oil pipe according to claim 1 is tested the pipe blanking plug; It is characterized in that described inner pressure transmission passage comprises push rod (3), pressure transmission through hole (9) and packing element central tube (11), push rod (3) is communicated with pressure transmission through hole (9) and packing element central tube (11) through pressure transmission mouth (4) and valve pocket.
8. test the pipe blanking plug according to claim 1 or 6 described a kind of oil pipes, it is characterized in that below packing element part, connecting weighted lever (14), weighted lever (14) and packing element lower contact (13) are through being threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120339298 CN202300306U (en) | 2011-08-29 | 2011-08-29 | Oil pipe detecting and blanking plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120339298 CN202300306U (en) | 2011-08-29 | 2011-08-29 | Oil pipe detecting and blanking plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202300306U true CN202300306U (en) | 2012-07-04 |
Family
ID=46369228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120339298 Expired - Fee Related CN202300306U (en) | 2011-08-29 | 2011-08-29 | Oil pipe detecting and blanking plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202300306U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322238A (en) * | 2011-08-29 | 2012-01-18 | 中国石油化工股份有限公司 | Oil tube testing plugging process and tube testing plugging device |
| CN105484696A (en) * | 2016-01-26 | 2016-04-13 | 新疆华油油气工程有限公司 | Recyclable blanking plug in oil tubing |
| CN114075939A (en) * | 2022-01-07 | 2022-02-22 | 胜利油田北方实业集团有限责任公司 | Oil pipe plug convenient to operation |
-
2011
- 2011-08-29 CN CN 201120339298 patent/CN202300306U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322238A (en) * | 2011-08-29 | 2012-01-18 | 中国石油化工股份有限公司 | Oil tube testing plugging process and tube testing plugging device |
| CN105484696A (en) * | 2016-01-26 | 2016-04-13 | 新疆华油油气工程有限公司 | Recyclable blanking plug in oil tubing |
| CN105484696B (en) * | 2016-01-26 | 2018-01-16 | 新疆华油油气工程有限公司 | Blanking plug in reclaimed oil pipe |
| CN114075939A (en) * | 2022-01-07 | 2022-02-22 | 胜利油田北方实业集团有限责任公司 | Oil pipe plug convenient to operation |
| CN114075939B (en) * | 2022-01-07 | 2022-06-10 | 胜利油田北方实业集团有限责任公司 | Oil pipe plug convenient to operation |
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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 |
Granted publication date: 20120704 Termination date: 20170829 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |