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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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.

Application Domain

Sealing/packing

Technology Topic

Stops deviceOil well

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  • Leakage stopping device for subsea production

Examples

  • Experimental program(1)

Example Embodiment

[0013] The drawings show a specific embodiment of the invention. This embodiment includes an oil well 1 and an oil pipe 2. The lower part of the oil pipe 2 is provided with an upper expansion rubber control ring 3 and a lower expansion rubber control ring 4, and an expansion sponge is provided 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. A non-slip sand 9 is provided between the upper expansion rubber control ring 3 and the oil pipe 2. A pressure reducing head 10 is installed at the bottom of the oil pipe 2. A valve 11 is installed at the lower part of the part where the oil pipe 2 extends from the oil well 1.
[0014] Using the leak stopper for underwater oil production wells of the present invention, when a leak occurs in the oil well 1, the upper spring controller 6 is opened, and the spring 7 will rapidly extend upward along the oil pipe 2, pushing the lower expansion rubber control ring 4 upward. Move, compress the distance between the lower expansion rubber control ring 4 and the upper expansion rubber control ring 3, and then expand the expansion sponge 5 outwards, block the outer walls of the oil well 1 and the oil pipe 2, and prevent the crude oil from flowing from the oil well 1 outside the oil pipe 2. Leakage within. The lower spring controller 8 can be used when the expanded sponge 5 is taken out later. The anti-slip sand 9 can prevent the spring 7 from pushing the lower expansion rubber control ring 4 and then pushing the expansion sponge 5, the friction between the upper expansion rubber control ring 3 and the oil pipe 2 is not enough to follow it from sliding upward.

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