Condensate cylinder blockage removing device and blockage removing method

Abstract

The invention discloses a condensate cylinder blockage removing device and a blockage removing method, and belongs to the technical field of coal bed gas development. The condensate cylinder blockage removing device comprises a purging assembly and a discharging assembly; the purging assembly comprises a gas cylinder and a gas inlet valve, a gas outlet of the gas cylinder communicates with an inlet of the gas inlet valve, and an outlet of the gas inlet valve is used for communicating with an outlet of a liquid discharging pipe of a condensate cylinder; and the discharging assembly comprises a blow-down valve, and an inlet of the blow-down valve is used for communicating with the outlet of the liquid discharging pipe of the condensate cylinder. According to the condensate cylinder blockage removing device, impurities blocked at the bottom of the condensate cylinder are removed through high-pressure gas in the gas cylinder, accumulated liquid containing the impurities is discharged to the bottom face through the blow-down valve, blockage removal of the condensate cylinder is achieved, the blocked condensate cylinder does not need to be disassembled and replaced, operation is easy, and the cost for removing blockage of the condensate cylinder is reduced.

Description

technical field [0001] The disclosure relates to the technical field of coalbed methane development, in particular to a plugging removal device and a blocking removal method for a condensate cylinder. Background technique [0002] During the development of coalbed methane or natural gas, the gas is transported from the wellhead to the gas gathering station by the gas pipeline. In the process of gas transportation, due to changes in terrain, temperature, pressure, etc., part of the gas will condense into a liquid state. In order to prevent the gas that has condensed into a liquid state from accumulating in the gas pipeline and causing blockage or freezing to damage the gas pipeline, the gas pipeline is A condensate cylinder will be set at a certain distance to collect the gas liquid and drain the liquid to the ground through the drain pipe. However, coalbed methane will carry some impurities such as coal powder and fracturing sand during the production process. After the coa...

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Problems solved by technology

[0004] In order to effectively collect the effusion in the gas pipeline into the condensate tank, the condensate tank is usually set in a mountainous area with a low altitude and a steep drop in terrain, and the construction work is difficult

At the same time, the replacement of the condensate tank needs to close the gas pipeline connected to it, which affects the normal production of the coal seam well. The pressure fluctuation caused by closing the valve in the gas pipeline will also cause damage to the coal seam reservoir, resulting in the loss of production of the coal seam well.

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