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Wellhead hydraulic sealing device

A hydraulic sealing and transmission technology, which is applied in sealing/packing, wellbore/well parts, earthwork drilling and production, etc., can solve unsafe problems, achieve the effect of solving unsafe operation, improving safety and work efficiency

Active Publication Date: 2016-04-06
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a wellhead hydraulic sealing device to solve the problem of unsafe operation of operators at the wellhead when the wellhead Christmas tree is closed.

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  • Wellhead hydraulic sealing device

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Embodiment Construction

[0026] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the present invention will now be described with reference to the accompanying drawings.

[0027] For this reason, the present invention proposes a kind of wellhead hydraulic sealing device, is used for sealing the sucker rod 2 of rod pump, as figure 1 As shown, the wellhead hydraulic sealing device includes:

[0028] The packing chamber 9, also known as the sealing chamber, is arranged on the wellhead 1 of the oil well;

[0029] Sealing packing, also known as sealing assembly, or sealing disc, is set in the packing chamber 9, the sucker rod 2 passes through the packing chamber 9, and the sealing or sealing can be realized by the movement of the sealing packing in the packing chamber The sucker rod 2 realizes the sealing of the wellhead. The sealing packing can adopt a combined structure of rubber and metal, and rubber is covered on the metal to ensure bot...

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Abstract

The invention provides a wellhead hydraulic sealing device, used to seal a sucker rod of a sucker-rod pump. The wellhead hydraulic sealing device comprises a packing chamber arranged on a wellhead of an oil well, sealing packings arranged in the packing chamber, a transmission device connected with the sealing packings, and a driving device connected with the transmission device. The wellhead hydraulic sealing device can conveniently realize remote shut-in well in a certain distance, and can rapidly and effectively complete shut-in well in emergency conditions. The device can be used as secondary sealing when a polish rod sealing packing on a wellhead is changed, and the device improves operation security and working efficiency.

Description

technical field [0001] The invention relates to the field of petroleum thermal recovery, in particular to the blowout prevention control for high-temperature and high-pressure rod pump oil production wellheads, in particular to a wellhead hydraulic sealing device. Background technique [0002] SAGD (Steam Assisted Gravity Drainage) has achieved good application results in thermal recovery of heavy oil. This development method requires continuous injection of steam into the formation to form a stable steam cavity. The temperature of the steam chamber in the bottom layer is about 250°C, and the pressure is about 4MPa. The temperature of the surface oil production wellhead output fluid is about 180°C, and the pressure is about 1MPa, which belongs to high temperature and high pressure. At present, this type of reservoir mostly adopts rod pump lifting system, and due to the gradual deepening of development, the research and development of large displacement downhole pumps has al...

Claims

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Application Information

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IPC IPC(8): E21B33/03
CPCE21B33/03
Inventor 商永刚林军胡博樊金明郭金鹏王鸽姚凯乐黄稳于雷兰军马骁周盟高俊峰孟鑫叶琳宁波杨纪超邹洪超
Owner PETROCHINA CO LTD