A gas well wellhead skid-mounted liquid sampling device

A technology for liquid sampling and gas wells, applied in wellbore/well valve devices, wellbore/well parts, sealing/isolation, etc., can solve the problems of safety risks and inability to take liquid, etc., achieve simple structure and solve sampling problems difficult effect

Active Publication Date: 2022-03-08
CNPC BOHAI DRILLING ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, the present invention aims to propose a gas well wellhead skid-mounted liquid sampling device that is easy to carry, easy to operate, safe and reliable, and is mainly used for gas well wellhead skid-mounted liquid sampling to solve the problem that the liquid cannot be taken due to high pressure and there is a safety hazard. risk conundrum

Method used

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  • A gas well wellhead skid-mounted liquid sampling device
  • A gas well wellhead skid-mounted liquid sampling device
  • A gas well wellhead skid-mounted liquid sampling device

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Embodiment Construction

[0026] The technical solutions of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0027] Such as figure 1 As shown, the gas well wellhead skid-mounted liquid sampling device includes: a fixed platform 1 and a liquid storage cylinder 2, a separation cylinder 3 and a nitrogen cylinder 4 installed on the table; the liquid storage cylinder 2 and the separation cylinder 3 are two It is a cylindrical structure with a closed end and is installed on the fixed platform 1 in an oblique shape. The obliquely upward end of the liquid storage cylinder 2 is connected to the obliquely downward end of the separation cylinder 3 through a vent pipe 5 and a return pipe 6 In order to realize the communication between the inner chambers of the two, the tube bodies of the vent pipe 5 and the return pipe 6 are kept horizontal and the position of the vent pipe 5 is higher than the return pipe 6; the obliquely downward end of the liquid storag...

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Abstract

The invention provides a skid-mounted liquid sampling device at the wellhead of a gas well. The basic components include: a fixed table and a liquid storage cylinder, a separation cylinder and a nitrogen bottle installed on the table; the liquid storage cylinder and the separation cylinder are cylinders with both ends closed structure and are installed on the fixed platform in an inclined shape, and the slanted upward end of the liquid storage cylinder is connected to the slanted downward end of the separation cylinder through a vent pipe and a return pipe. The obliquely downward end of the liquid storage cylinder is provided with a sampling port, a sampling port and a liquid level observation window. The sampling port of the liquid storage cylinder is connected to a nitrogen cylinder through a pressure-resistant pipeline, and the inner cavity of the separation cylinder is provided with a gas-liquid filter. An exhaust pipe is also arranged at the end inclined upward. The device can effectively solve the difficult problem of sampling caused by blowing out of the liquid sample when sampling the water bottle and the hidden safety problem caused by the flammable and explosive gas in the sample. In addition, the present invention also has the advantages of simple structure, easy operation, easy disassembly and portability.

Description

Technical field: [0001] The invention relates to the technical field of gas extraction in gas fields, in particular to a skid-mounted liquid sampling device at the wellhead of a gas well during natural gas production. Background technique: [0002] In the gas production process, in order to understand the fluidity of gas wells, liquid samples are often taken from gas wells. During the operation, it is usually necessary to take liquid samples at the wellhead and the skid-mounted part with a water bottle. However, due to a certain pressure at the wellhead and the skid-mounted part, the liquid sample in the bottle will be blown out, making it difficult to take liquid samples. In addition, natural gas is a flammable and explosive gas, and there are certain safety hazards in directly taking liquid samples with containers such as water bottles. Invention content: [0003] In view of this, the present invention aims to propose a gas well wellhead skid-mounted liquid sampling dev...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B49/08E21B34/02
CPCE21B49/086E21B34/02
Inventor 张鹏名李东林高秀丽梁亚军刘孟鹏
Owner CNPC BOHAI DRILLING ENG
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