High-pressure oil pipe blanking plug
A high-pressure oil pipe and plugging technology, which is applied in wellbore/well components, earthwork drilling, sealing/isolation, etc., can solve the problems of heavy workload, high cost, and long construction period, and achieve low risk and short construction period. The effect of shortening and operating cost reduction
Active Publication Date: 2016-02-24
金湖恒力机械有限公司
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Problems solved by technology
Due to the long-term water injection of the water injection well, when the injection is stopped, the high pressure of the water injection tubing cannot be released immediately, which brings great environmental risks and well control risks to the replacement of wellhead accessories
The existing technical solutions are mainly to use tank trucks to release pressure or directly use professional pressure equipment to block the high pressure of the oil pipe, and then replace the damaged parts. Both of these two solutions for replacing the damaged parts of the water injection wellhead under high pressure have heavy workload and high cost. , Defects of long construction period
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[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0018] Such as figure 1 , 2 shown. A high-pressure oil pipe plug, comprising a plug body 1 and a drive system 2, the plug body 1 is arranged inside the high-pressure oil pipe, and the drive system 2 connects the plug body 1 with the drive rod 4 arranged at the tail of the plug body 1 In connection with each other, an overflow prevention pipe 3 is provided outside the plug main body 1 and the drive system 2 .
[0019] The occluder main body 1 includes an unsealing piston 1-1, a T-shaped groove 1-2, a slip 1-3, a cone 1-4, and an upper cap 1-5 arranged sequentially along the central axis from top to bottom. , rubber cartridge 1-6, lower cap 1-7, upper piston 1-8, lower piston 1-9, guide body 1-10, slips 1-3 and cone 1-4 are connected through a dovetail groove, the A spacer ring 1-11 is arranged between the lower parallel cap 1-7 and the rubber cylinde...
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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 [0001] The invention relates to the field of oil pipe plugs, in particular to a high-pressure oil pipe plug. Background technique [0002] With the deepening of oilfield exploitation, the number of damaged wellhead fittings of water injection wells in oilfields is also increasing, and the workload of replacing damaged wellhead fittings is also increasing. Due to the long-term water injection in the water injection well, when the injection is stopped, the high pressure of the water injection tubing cannot be released immediately, which brings great environmental risks and well control risks to the replacement of wellhead accessories. The existing technical solutions are mainly to use tank trucks to release pressure or directly use professional pressure equipment to block the high pressure of the oil pipe, and then replace the damaged parts. Both of these two solutions for replacing the damaged parts of the water injection wellhead under high pressure have heav...
Claims
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Inventor 嵇才良鲁延瑞张广根
Owner 金湖恒力机械有限公司