Device and method of low temperature separation dehydration of gas field well mouth

A technology of separation and dehydration and low-temperature separator, which is applied in the direction of gas fuel, petroleum industry, fuel, etc., and can solve the problems of unutilized energy, complex process equipment, and energy consumption

Inactive Publication Date: 2012-12-26
CHINA GASOLINEEUM ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to ensure the normal production of natural gas at the wellhead and prevent the production of hydrates after high pressure throttling, the two technological measures adopted, namely the heating method and the inhibitor injection method

Method used

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  • Device and method of low temperature separation dehydration of gas field well mouth
  • Device and method of low temperature separation dehydration of gas field well mouth
  • Device and method of low temperature separation dehydration of gas field well mouth

Examples

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Example Embodiment

[0022] A gas field wellhead low-temperature separation and dehydration device, such as figure 1 As shown, it includes: free water separator 2, throttle valve 4, primary cyclone separation device 5, low temperature separator 6, gas phase zone of low temperature separator 7, combined separation element 8 at the outlet of low temperature separator, hot water boiler 10. Hot water boiler outlet pipeline 11, hot water boiler return pipeline 12, low temperature separator liquid phase area 14, free water separator gas phase space 17, free water separator liquid phase space 18, etc., among which:

[0023] The free water separator 2 is divided into an upper gas phase space 17 and a bottom liquid phase space 18, wherein the liquid phase space 18 is connected to the free water separator drain line 20, and the free water separator drain valve 19 is arranged on the line 20 The gas phase space 17 is connected with the low-temperature separator 6 through the natural gas pipeline, and on the n...

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Abstract

The invention discloses a device and a method of low temperature separation dehydration of a gas field well mouth. Three processes including depressurization, gas-liquid separation and dehydration are integrated, steam in natural gas is condensed into water mist or aquo-complex condensation nucleus by utilizing low temperature cold quantity produced by throttling; high speed gas flow after throttling is sent to a whirlcone of a low temperature separation device; and small water drops and the aquo-complex condensation nucleus in the water mist rotate in the whirlcone at a high speed and are thrown to an inner wall of a casing of the whirlcone under effect of centrifugal force to achieve gas-liquid separation. Compared with a method that the natural gas is overall heated before throttling by using a heating method or an inhibitor is added to block generation of the aquo-complex, the device of low temperature separation dehydration of the gas field well mouth has three functions of throttling, separation and dehydration; and with the adoption of the device, a dehydration device is removed and investment and administration expenses are greatly reduced.

Description

technical field [0001] The invention belongs to the field of natural gas gathering and transportation, and in particular relates to a gas field wellhead low-temperature separation and dehydration device and method. Background technique [0002] The pressure of the natural gas at the wellhead is generally higher than the gathering pressure. During the production process of the natural gas at the wellhead, a throttle valve is used to adjust the pressure to reduce the high-pressure gas flow to the gathering pressure. Due to the decrease in pressure, gas expansion leads to a decrease in gas temperature. If the temperature drop reaches or exceeds the hydrate formation temperature after throttling, hydrates will be generated in the gas after throttling, causing pipelines, valves, and instruments to be blocked, reducing pipeline production. capacity, in severe cases, it may lead to pipeline damage or stop production. [0003] The following two methods are generally used to prevent...

Claims

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Application Information

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IPC IPC(8): C10L3/10
Inventor 陈宇波陈彰兵郭成华刘俊李瑜彭磊曾文胡锦谈文虎陈志李珣李熹王海兰黄和杜毅汤智昀米力田
Owner CHINA GASOLINEEUM ENG
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