CN105350933A - High-pressure oil pipe blanking plug - Google Patents
High-pressure oil pipe blanking plug Download PDFInfo
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- CN105350933A CN105350933A CN201510858793.5A CN201510858793A CN105350933A CN 105350933 A CN105350933 A CN 105350933A CN 201510858793 A CN201510858793 A CN 201510858793A CN 105350933 A CN105350933 A CN 105350933A
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- blanking plug
- oil pipe
- pressure oil
- main body
- packing
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Abstract
The invention discloses a high-pressure oil pipe blanking plug which comprises a blanking plug body and a driving system. The blanking plug body is arranged inside a high-pressure oil pipe, the driving system is connected with the blanking plug body through a driving rod arranged at the tail portion of the blanking plug body, and a spill prevention pipe is further arranged outside the blanking plug body and the driving system. According to the high-pressure oil pipe blanking plug, when a damaged and pierced wellhead accessory is replaced, pressure relief achieved through cooperation of a tank truck is not needed, cooperation of equipment operating under pressure is not needed, and the operation cost is greatly reduced.
Description
Technical field
The present invention relates to tubing plug field, particularly relate to a kind of high-pressure oil pipe blanking plug.
Background technology
Along with deepening continuously of oilfield exploitation, the wellhead hardware of water injection well in oil fields damages the quantity of stinging leakage also constantly to be increased, and the workload changing well head damage accessory also constantly increases.Due to the long-time water filling of water injection well, when stopping note, the high pressure of water-filling oil pipe can not pressure release at once, gives to change wellhead hardware and bring great environmental protection risk and well control risk.Existing technical scheme mainly bleeds off pressure with tank car or directly carrys out shutoff oil pipe high pressure with the equipment with pressure of specialty, then change and damage accessory, change water injection well under these two kinds of high pressure and damage the scheme of accessory and all have that workload is large, with high costs, the defect of long construction period.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of high-pressure oil pipe blanking plug, using that this blanking plug workload is little, cost is low, shorten construction period.
The present invention is achieved through the following technical solutions: a kind of high-pressure oil pipe blanking plug, comprise blanking plug main body and drive system, described blanking plug main body is arranged on high-pressure oil pipe inside, drive system is connected with blanking plug main body by the drive rod being arranged on blanking plug body tail section, and described blanking plug main body and drive system outside also arrange anti-overflow pipe.
Described blanking plug main body comprises from top to bottom deblocking piston that centrally axle sets gradually, T-slot, slips, cone, upper and cap, packing element, lower and cap, upper piston, lower piston, guide way, slips is connected through dovetail groove with cone, described lower and between cap and packing element, spacer ring is set, between described upper piston and lower piston, urceolus is set.
Described drive system comprises driven plunger, packing seat, connecting rod and pressure cap, described connecting rod one end is run through packing seat center and is connected with driven plunger tail end, driven plunger front end is connected with drive rod afterbody, also arrange sealed packing between packing seat and connecting rod outer wall, described pressure cap is connected with packing seat through screw thread.
Described anti-overflow pipe also arranges driving pump incoming interface between driven plunger and packing seat.
Described anti-overflow pipe is through screw thread and the connection of packing seat.
The present invention rely on external pressure set the blanking plug main body of interior pressure deblocking, drive rod, with hydraulic pressure blanking plug main body sent into high-pressure oil pipe driven plunger, provide the anti-overflow pipe driving the driving pump incoming interface of hydraulic pressure, packing seat, the sealed packing of connecting rod, the pressure cap of lock sealing packing, connecting rod to provide the deblocking of hydraulic pressure to pump into interface for blanking plug deblocking, prevent oil pipe inner high voltage from leaking for driven plunger.
The present invention compared to existing technology, has following beneficial effect:
1. the present invention changes when well head damages thorn leakage accessory and coordinates pressure release without the need to tank car, and coordinate without the need to Operating Pressure equipment, operating cost declines to a great extent.
2. the present invention leaks without sewage in well in construction, and environmental protection well control risk is little.
3. the present invention's construction only needs the cooperation of a well maintenance vehicle (or crane), simple to operate, short construction period.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is the structural representation of blanking plug main body of the present invention.
Wherein: under the upper and cap of 1 blanking plug main body, 2 drive systems, 3 anti-overflow pipes, 4 drive rods, 1-1 deblocking piston, 1-2T type groove, 1-3 slips, 1-4 cone, 1-5,1-6 packing element, 1-7 and cap, 1-8 upper piston, 1-9 lower piston, 1-10 guide way, 1-11 spacer ring, 1-12 urceolus, 2-1 driven plunger, 2-2 packing seat, 2-3 connecting rod, 2-4 pressure cap, 2-5 sealed packing, 2-6 driving pump incoming interface.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further illustrated.
As shown in Figure 1, 2.A kind of high-pressure oil pipe blanking plug, comprise blanking plug main body 1 and drive system 2, described blanking plug main body 1 is arranged on high-pressure oil pipe inside, drive system 2 is connected with blanking plug main body 1 by the drive rod 4 being arranged on blanking plug main body 1 afterbody, and described blanking plug main body 1 and drive system 2 outside also arrange anti-overflow pipe 3.
Described blanking plug main body 1 comprises from top to bottom deblocking piston 1-1, T-slot 1-2 that centrally axle sets gradually, slips 1-3, cone 1-4, upper and cap 1-5, packing element 1-6, lower and cap 1-7, upper piston 1-8, lower piston 1-9, guide way 1-10, slips 1-3 is connected through dovetail groove with cone 1-4, described lower and between cap 1-7 and packing element 1-6, spacer ring 1-11 is set, between described upper piston 1-8 and lower piston 1-9, urceolus 1-12 is set.
Described drive system 2 comprises driven plunger 2-1, packing seat 2-2, connecting rod 2-3 and pressure cap 2-4, described connecting rod 2-3 one end is run through packing seat 2-2 center and is connected with driven plunger 2-1 tail end, driven plunger 2-1 front end is connected with drive rod 4 afterbody, also arrange sealed packing 2-5 between packing seat 2-2 and connecting rod 2-3 outer wall, described pressure cap 2-4 is connected with packing seat 2-2 through screw thread.
Described anti-overflow pipe 3 also arranges driving pump incoming interface 2-6 between driven plunger 2-1 and packing seat 2-2.
Described anti-overflow pipe 3 is through screw thread and packing seat 2-2 connection.
Blanking plug main body 1 is connected with driven plunger 2-1 through drive rod 4, and be positioned at anti-overflow pipe 3, connecting rod 2-3 is connected to the top of driven plunger 2-1, anti-overflow pipe 3 top is provided with driving pump incoming interface 2-6, bottom is provided with inspection hole, anti-overflow pipe 3 installs packing seat 2-2 through being threaded, sealed packing 2-5 is held in packing seat 2-2, pressure cap 2-4 is connected with packing seat 2-2 through screw thread, and adjustable stroke forms sealing with compression seal packing 2-5 to connecting rod 2-3 outer wall, connecting rod 2-3 top is provided with lifting sub for subsequent use and deblocking pumps into interface, deblocking pumps into interface and driving pump incoming interface 2-6 is all connected with corresponding high-pressure hand pump, inspection hole can install control valve, all tool assembles are complete, then be connected through anti-overflow pipe 3 bottom tubing round thread can carry out shutoff with the hoop for subsequent use at water injection well top, change accessory, unsealing operation.
Operating principle of the present invention is as follows:
The automatic state that switch self according to the height of external and internal pressure of blanking plug main body 1 energy; When external pressure is higher than internal pressure, instrument automatic setting (support grappling tube inner wall, and form sealing), stops the high pressure in oil pipe to leak; When internal pressure is higher than external pressure certain value, blanking plug main body 1 can deblocking by force, and remove the support grappling with oil pipe, and cartridge 1-6 is bounced back, blanking plug main body about 1 is communicated with.
Claims (5)
1. a high-pressure oil pipe blanking plug, comprise blanking plug main body (1) and drive system (2), it is characterized in that: described blanking plug main body (1) is arranged on high-pressure oil pipe inside, drive system (2) is connected with blanking plug main body (1) by the drive rod (4) being arranged on blanking plug main body (1) afterbody, and described blanking plug main body (1) and drive system (2) outside also arrange anti-overflow pipe (3).
2. high-pressure oil pipe blanking plug according to claim 1, it is characterized in that: described blanking plug main body (1) comprises from top to bottom the deblocking piston (1-1) that centrally axle sets gradually, T-slot (1-2), slips (1-3), cone (1-4), upper also cap (1-5), packing element (1-6), lower also cap (1-7), upper piston (1-8), lower piston (1-9), guide way (1-10), slips (1-3) is connected through dovetail groove with cone (1-4), described lower and between cap (1-7) and packing element (1-6), spacer ring (1-11) is set, between described upper piston (1-8) and lower piston (1-9), urceolus (1-12) is set.
3. high-pressure oil pipe blanking plug according to claim 1, it is characterized in that: described drive system (2) comprises driven plunger (2-1), packing seat (2-2), connecting rod (2-3) and pressure cap (2-4), described connecting rod (2-3) one end is run through packing seat (2-2) center and is connected with driven plunger (2-1) tail end, driven plunger (2-1) front end is connected with drive rod (4) afterbody, also arrange sealed packing (2-5) between packing seat (2-2) and connecting rod (2-3) outer wall, described pressure cap (2-4) is connected with packing seat (2-2) through screw thread.
4. high-pressure oil pipe blanking plug according to claim 3, is characterized in that: described anti-overflow pipe (3) is positioned between driven plunger (2-1) and packing seat (2-2) and also arranges driving pump incoming interface (2-6).
5. high-pressure oil pipe blanking plug according to claim 1, is characterized in that: described anti-overflow pipe (3) is through screw thread and packing seat (2-2) connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510858793.5A CN105350933B (en) | 2015-12-01 | 2015-12-01 | A kind of high-pressure oil pipe blanking plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510858793.5A CN105350933B (en) | 2015-12-01 | 2015-12-01 | A kind of high-pressure oil pipe blanking plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105350933A true CN105350933A (en) | 2016-02-24 |
| CN105350933B CN105350933B (en) | 2019-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510858793.5A Active CN105350933B (en) | 2015-12-01 | 2015-12-01 | A kind of high-pressure oil pipe blanking plug |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2208127C1 (en) * | 2001-11-05 | 2003-07-10 | Общество с ограниченной ответственностью "Биттехника" | Double-acting hydraulic packer |
| US20040216868A1 (en) * | 2003-05-02 | 2004-11-04 | Owen Harrold D | Self-set bridge plug |
| CN201301683Y (en) * | 2008-11-26 | 2009-09-02 | 大庆油田有限责任公司 | Tubing plug for preventing oil well or water well from blowout |
| CN202338268U (en) * | 2011-11-25 | 2012-07-18 | 中国石油集团长城钻探工程有限公司 | Hydraulic type oil-line plugging device |
| CN203420662U (en) * | 2013-09-06 | 2014-02-05 | 中国石油天然气股份有限公司 | Small diameter oil pipe plug |
| CN203925409U (en) * | 2014-06-25 | 2014-11-05 | 江苏力克石油机械有限公司 | Tubing plug |
-
2015
- 2015-12-01 CN CN201510858793.5A patent/CN105350933B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2208127C1 (en) * | 2001-11-05 | 2003-07-10 | Общество с ограниченной ответственностью "Биттехника" | Double-acting hydraulic packer |
| US20040216868A1 (en) * | 2003-05-02 | 2004-11-04 | Owen Harrold D | Self-set bridge plug |
| CN201301683Y (en) * | 2008-11-26 | 2009-09-02 | 大庆油田有限责任公司 | Tubing plug for preventing oil well or water well from blowout |
| CN202338268U (en) * | 2011-11-25 | 2012-07-18 | 中国石油集团长城钻探工程有限公司 | Hydraulic type oil-line plugging device |
| CN203420662U (en) * | 2013-09-06 | 2014-02-05 | 中国石油天然气股份有限公司 | Small diameter oil pipe plug |
| CN203925409U (en) * | 2014-06-25 | 2014-11-05 | 江苏力克石油机械有限公司 | Tubing plug |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105350933B (en) | 2019-02-26 |
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