Mechanical temporary plugging bridge plug

A mechanical, bridge plug technology, used in wellbore/well components, sealing/packaging, earth-moving drilling, etc., can solve the problems of unreliable setting and high failure rate of well sealing tools, and achieve reliable sealing of rubber cylinders. Effect

Active Publication Date: 2021-05-28
大庆市亚盛油田技术开发有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of high failure rate and unreliable setting of existing sealing tools, the present invention provides a mechanical temporary blocking bridge plug, which has simple structure, convenient operation, high sealing success rate and reliable setting

Method used

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Embodiment Construction

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0023] Such as figure 1 , 4 , 5, and 6, the present invention includes a central tube assembly, a core rod assembly, a friction anchor assembly, a rubber cartridge 15, a rubber cartridge lower retaining ring 18 and a block 19, and the core rod assembly is sealed and inserted from the bottom to the top In the central tube assembly, the friction anchor assembly, rubber sleeve 15 and rubber sleeve lower stop ring 18 are all set on the outside of the central tube assembly, and the friction anchor assembly, rubber sleeve 15 and rubber sleeve lower stop ring 18 are arra...

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Abstract

The invention discloses a mechanical temporary plugging bridge plug, and relates to the technical field of oil field downhole tools. The mechanical temporary plugging bridge plug comprises a central pipe assembly, a core rod assembly, a friction anchoring assembly, a rubber sleeve, a rubber sleeve lower baffle ring and a clamping block, wherein the core rod assembly is hermetically inserted in the central pipe assembly from bottom to top, the friction anchoring assembly, the rubber sleeve and the rubber sleeve lower baffle ring are all sleeved on the outer side of the central pipe assembly, the rubber sleeve lower baffle ring is connected with the central pipe assembly through the clamping block, the core rod assembly comprises a core rod and a core rod lower connector with the diameter larger than that of the core rod, the inner side of the clamping block penetrates through the center pipe assembly and then abuts against the core rod lower connector, the outer side of the clamping block is matched with the rubber sleeve lower baffle ring through an inclined face, the friction anchoring assembly comprises a friction assembly and an anchoring assembly, and the anchoring assembly is in threaded connection with the central pipe assembly. After setting, the elastic force of the rubber sleeve is locked through the clamping block and does not directly act on an unsetting shear pin; and meanwhile, the inner side is blocked by the core rod assembly with the thick lower part and the thin upper part, so that the mechanical temporary plugging bridge plug can bear high pressure at the shaft bottom and is more reliable in setting.

Description

technical field [0001] The invention belongs to the field of oilfield downhole tools, in particular to a mechanical temporary bridging plug. Background technique [0002] Temporary plugging of the bottom of high-pressure wells in oil fields is a very important plugging operation. Poor plugging will cause serious blowouts. The existing plugging tools have complex structures, high failure rates, and unsatisfactory sealing effects. There is a phenomenon of unblocking in the middle of the change of pressure. Contents of the invention [0003] In order to solve the problems of high failure rate and unreliable setting of existing sealing tools, the invention provides a mechanical temporary bridging plug, which has simple structure, convenient operation, high plugging success rate and reliable setting. [0004] The technical solution provided by the present invention is: a mechanical temporary bridging plug, including a central pipe assembly, a core rod assembly, a friction anch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/134E21B33/127E21B31/20
CPCE21B31/20E21B33/127E21B33/134
Inventor 杨帆
Owner 大庆市亚盛油田技术开发有限公司
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