A gas well wellhead skid-mounted liquid sampling device

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...

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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

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