Apparatus for measuring hydrogen sulphide content in crude oil and natural gas in pipe

Abstract

The invention relates to a device used for dynamically monitoring the content of hydrogen sulfide in crude oil and natural gas of oilfield production. The device can measure the content of the hydrogen sulfide in the crude oil and natural gas in pipelines; and the device comprises an oil gas separator, an injection pump, a measurement pool, a cadmium element lamp, a reference electro-optic doubling lamp, a measurement electro-optic doubling lamp, a power, a transformer, a rectifier, a switch, a high-consistency hydrogen sulfide standard sample bottle and a low-consistency hydrogen sulfide standard sample bottle. The device has reasonable and compact structure, small volume, convenient usage, can measure 0 to 15 percent (consistency of hydrogen sulfide ranging from 0 to 150000ppm) of the content of the hydrogen sulfide in crude oil and natural gas in the pipelines, has high sensitiveness, is applicable to the environments of severe weather, desert, high-temperature and low-temperature, moist environment and air containing 0.1 oercent of hydrogen sulfide, and can normally and reliably work under the conditions continuously for more than 20 days, thereby greatly improving the working efficiency of the hydrogen sulfide measurement.

Description

1. Technical field [0001] The invention relates to a device for dynamically monitoring hydrogen sulfide content in crude oil and natural gas in oil field production, and is a device for measuring hydrogen sulfide content in crude oil and natural gas in pipelines. 2. Background technology [0002] Oil and gas wells contain a certain concentration of hydrogen sulfide gas. Hydrogen sulfide is a poisonous and harmful gas. Hydrogen sulfide is absorbed quickly through the mucous membranes, but very slowly through the skin. People inhale 70 to 150 mg / m of hydrogen sulfide for 1 to 2 minutes and have symptoms of respiratory tract and eye irritation. After 2 to 5 minutes, they feel tired and can't smell the odor. Acute poisoning occurs soon after inhalation of 760 mg / m3 to 1000 mg / m3 for a few seconds, respiratory paralysis after rapid breathing and death. Hydrogen sulfide not only seriously pollutes the air environment, but also seriously corrodes the oilfield equipment, especially...

AI Technical Summary

Problems solved by technology

At present, the instruments for measuring hydrogen sulfide can only measure the content of hydrogen sulfide volatilized in the air. When the resistive semiconductor gas detector detects sulfide mixed in the gas, the detector is prone to poisoning and failure; the MOSFET gas detector has a short service life; The hydrogen sulfide capacity of the chemical gas detector can only reach 200ppm, and the life is short; the solid electrolyte gas detector has limited ability to detect hydrogen sulfide, and the life is short; the combustion type gas sensor has a short life and limited ability to detect hydrogen sulfide; Gas sensors, concentration cell gas sensors, and surface acoustic wave (SAW) gas sensors also have problems of short life and limited detection capabilities

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