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Constant pressure throttling device for natural gas well

A throttling device and natural gas technology, which is applied in wellbore/well valve devices, wellbore/well parts, earthwork drilling and production, etc., can solve problems affecting work efficiency, gas wells cannot be produced normally, etc., and achieve faster production efficiency , the effect of preventing leakage

Active Publication Date: 2019-03-05
PETROLEUM ENG TECH RES INST CHINA PETROLEUM & CHEM CORP NORTH CHINA OIL & GAS CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a constant pressure throttling device for natural gas wells to solve the problem that the gas wells cannot be produced normally due to changes in the pressure and output of natural gas in different production periods and affect the working efficiency.

Method used

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  • Constant pressure throttling device for natural gas well
  • Constant pressure throttling device for natural gas well
  • Constant pressure throttling device for natural gas well

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Embodiment Construction

[0026] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0027] Specific embodiment one of the natural gas well constant pressure throttling device of the present invention, as figure 1 As shown, a gas well constant pressure throttling device includes three parts: a housing 4 , a piston 5 , and a balance weight 3 . The left and right ends of the housing 4 are provided with threaded holes, the left end threaded hole is provided with a compression spring limiter 1 for connecting the compression spring 2, and the right end threaded hole is provided with a piston limiter 7 for limiting the piston rod , The compression spring limiter 1 and the piston limiter 7 work together to ensure that the piston rod can reciprocate without breaking away from its range of motion. The position corresponding to the upper side of the casing 4 and the piston 5 is provided with a flow-limiting hole 9 , the flow-limiting hole 9 commu...

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Abstract

The invention relates to a constant pressure throttling device for a natural gas well. The constant pressure throttling device includes a shell and a piston capable of reciprocating in the shell; oneend of the piston is connected with an elastic device; the elastic device is fixed on a spring limit member; the other end of the piston is provided with an opening and is limited by a piston limit member; the shell and the piston corresponding to the outer circumference are respectively provided with flow limitation holes penetrating through a natural gas pipeline; and the flow limitation holes communicate with the opening of the piston through an inner cavity of the piston. The constant pressure throttling device can achieve automatic adjustment of the size of an air nozzle of the throttlingdevice, achieves constant pressure throttling, and enables the labor intensity to be reduced, the cost to be reduced and the work efficiency to be improved.

Description

technical field [0001] The invention relates to the technical field of natural gas exploitation, in particular to a constant pressure throttling device for a natural gas well. Background technique [0002] In the process of traditional natural gas exploitation, the pressure in the gas well is relatively high, and a throttling and pressure-reducing device must be installed at the wellhead to control the gas production of the gas well in order to achieve the goal of stable production. In the process of throttling and depressurization, the pressure of natural gas drops rapidly after passing through the throttle nozzle, and the volume increases rapidly, and then the temperature of natural gas also drops sharply. However, natural gas usually contains a certain proportion of water, and the temperature of natural gas drops to the level of hydrates. When conditions are formed, hydrates will condense, and hydrates will cause blockage of surface equipment and affect the normal product...

Claims

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Application Information

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IPC IPC(8): E21B34/02
CPCE21B34/02
Inventor 刘岳龙隋冬梅梅洁王锦昌张荣铺周瑞立刘玉祥杨芾汕符伟兵林新宇
Owner PETROLEUM ENG TECH RES INST CHINA PETROLEUM & CHEM CORP NORTH CHINA OIL & GAS CO
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