A mechanical temporary bridging 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: 2021-09-21
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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  • A mechanical temporary bridging plug
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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] like 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 arrange...

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Abstract

A mechanical temporary bridging plug, which relates to the technical field of oilfield downhole tools, includes a central pipe assembly, a core rod assembly, a friction anchor assembly, a rubber sleeve, a rubber sleeve lower retaining ring, and a block. The core rod assembly consists of a Upward sealing is inserted into the central tube assembly, the friction anchor assembly, rubber tube and rubber tube lower retaining ring are all set on the outside of the central tube assembly, and the rubber tube lower retaining ring is connected with the central tube assembly through a block; the core rod The assembly includes the core rod and the lower joint of the core rod with a diameter larger than the core rod. The inner side of the block passes through the central tube assembly and abuts against the lower joint of the core rod. The outer side of the block fits with the lower retaining ring of the rubber cartridge through an inclined surface; the friction anchor assembly It includes a friction component and an anchor component, and the anchor component is threadedly connected with the central pipe component. After setting, the elastic force of the rubber tube is locked by the block, and does not directly act on the unsealing shear nail; at the same time, the inner side is blocked by the core rod assembly with a thick bottom and a thin top, so the invention can withstand the high pressure at the bottom of the well, and the setting more reliable.

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 Patents(China)
IPC IPC(8): E21B33/134E21B33/127E21B31/20
CPCE21B31/20E21B33/127E21B33/134
Inventor 李俊峰朱新宇杨帆
Owner 大庆市亚盛油田技术开发有限公司
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