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A wellhead blowout prevention device

A blowout preventer, blowout preventer technology, applied in wellbore/well components, earthwork drilling, sealing/packing, etc., can solve problems such as oil and gas leakage at the wellhead, prevent blowout accidents, reduce environmental protection costs, reduce The effect of pollution

Active Publication Date: 2017-06-23
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, as of April 2015, only TH12140, TK679 and other wells had broken rods up to 11 times, which brought great well control risks to safety work. Wellhead Oil and Gas Leakage

Method used

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  • A wellhead blowout prevention device

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Experimental program
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Effect test

Embodiment Construction

[0020] In the following, the present invention will be specifically described through exemplary embodiments. It should be understood, however, that elements, structures and characteristics of one embodiment may be beneficially incorporated in other embodiments without further recitation.

[0021] see figure 1 , is a schematic structural view of the wellhead blowout preventer in the present invention, as figure 1 As shown, the wellhead blowout preventer of the present invention is installed on the blowout preventer box of the polished rod sealer. The wellhead blowout preventer of the present invention includes a body 13, the polished rod 10 can pass through the body 13, and the inside of the body 13 is also provided with a The sealing ball 1 of the polished rod hole in the body 13 is provided with a thrust device against the outer surface of the polished rod 10 outside the body 13. The thrust device can push the sealing ball against the polished rod hole in the body when the p...

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PUM

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Abstract

The invention provides a wellhead blowout preventer. The wellhead blowout preventer is mounted on a blowout prevention box of a polished rod sealer and comprises a body, wherein a polished rod passes through the body; a sealing ball capable of leaning against a polished rod hole in the body is also arranged in the body; a thrusting device leaning against the outer side surface of the polished rod is arranged outside the body; the thrusting device can be used for pushing the sealing ball to lean against the polished rod hole in the body when the polished rod is broken off. The wellhead blowout prevention has the advantages of being capable of blocking the polished rod hole in time when the polished rod in an oil-pumping well is broken off and reducing pollution caused by oil gas which falls on ground.

Description

technical field [0001] The invention relates to a wellhead blowout preventer, in particular to a wellhead blowout preventer in a rod pumping device. Background technique [0002] The breakage of the polished rod in the pumping well is one of the main factors affecting the normal production of the oil field. In recent years, as the digging potential of the oil field has been continuously increased, the oil well pump has gone deeper and deeper, and the load on the rod string has become larger and larger, resulting in an increasing number of pumping unit wells with polished rods breaking off, which brings great impact on the safety and environmental protection of oil production and well control work. To great harm, followed by governance costs are also increasing year by year. [0003] During the long-term reciprocating pumping movement of the polished rod of the pumping well, due to the exchange effect of bending stress and the stress concentration at the clamp of the polishe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/06
CPCE21B33/06
Inventor 吴登亮梅胜文唐健晋伟强杨小伟刘川吴英杰
Owner CHINA PETROLEUM & CHEM CORP
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