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Leakage stopping device for subsea production

A plugging device and oil production well technology, which is applied in earthwork drilling, wellbore/well components, sealing/isolation, etc., can solve the problems of high cost, cumbersome operation, long plugging time, etc., and achieve low cost, Simple operation, fast plugging effect

Inactive Publication Date: 2016-01-27
于文海
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under the current technology, there is no effective method for the leakage of subsea oil production wells, especially sudden leakage.

Method used

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  • Leakage stopping device for subsea production

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Embodiment Construction

[0013] Accompanying drawing is a kind of specific embodiment of the present invention. This embodiment includes an oil well 1 and a tubing 2. The lower part of the tubing 2 is provided with an upper expansion rubber control ring 3 and a lower expansion rubber control ring 4 respectively, and an expansion sponge is arranged between the upper expansion rubber control ring 3 and the lower expansion rubber control ring 4. 5. The lower expansion rubber control ring 4 is connected to the spring 7 through the upper spring controller 6, and the spring 7 is fixed to the bottom of the oil pipe 2 through the lower spring controller 8. Anti-slip sand 9 is provided between the upper expansion rubber control ring 3 and the oil pipe 2 . A decompression head 10 is installed at the bottom of the oil pipe 2 . A valve 11 is installed at the lower part of the oil pipe 2 protruding from the oil well 1 .

[0014] Using the plugging device for underwater oil production wells of the present inventi...

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Abstract

The invention relates to a leakage stopping device, in particular to a leakage stopping device for subsea production.The leakage stopping device comprises an oil well and an oil pipe and is characterized in that the lower portion of the oil pipe is provided with an upper expansion adhesive control ring and a lower expansion adhesive control ring; expansion sponge bodies are arranged between the upper expansion adhesive control ring and the lower expansion adhesive control ring; the lower expansion adhesive control ring is connected with springs by means of upper spring controllers; and the springs are fixed at the bottom of the oil pipe by means of lower spring controllers. The leakage stopping device for subsea production has following beneficial effects: operation is performed easily at low cost; quick and good leakage stopping effects are achieved; and the leakage stopping device is not only used for oil leakage in a gulf but also used for oil leakage and gas leakage in case of emergencies.

Description

(1) Technical field [0001] The invention relates to a leak stopper, in particular to a leak stopper for an underwater oil production well. (2) Background technology [0002] Petroleum is used as fuel oil and gasoline, and is also a raw material for many chemical industry products such as solutions, fertilizers, pesticides and plastics. 1 / 4 of the earth's proven oil resources and 45% of the ultimately recoverable reserves are buried in the seabed. The world's proven oil reserves have gradually shifted from land to sea. The leakage of marine oil will cause toxic compounds to quickly enter the food chain, from lower algae to higher mammals, no one will be spared; even if the survivors are affected by the poison, they will be passed on to the offspring of several organisms, because humans are also eating seafood. Under the current technology, there is no effective method for the leakage of subsea oil production wells, especially sudden leakage. Most of them are cumbersome to o...

Claims

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Application Information

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IPC IPC(8): E21B33/10
Inventor 于文海刘作黎巩发明王林
Owner 于文海
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