Abstract
In order to get ridded of the non real-time detection methods of artificial site sampled and laboratory instrument analyzed in the field of methane detection in the offshore shallow gas, real-time in-situ detection system for methane in offshore shallow gas was designed by the film interface.The methane in the offshore shallow gas through the gas-liquid separation membrane of polymer permeation into the system internal detection probe, analog infrared micro gas sensor sensed the methane concentration and the corresponded output value, data acquisition and communication node fitted into standard gas concentration.Based on the experimental data compared with the traditional detection method, and further analyzed the causes of error produced by the case experiment. The application results show that the system can achieve a single borehole layout, long-term on-line in-situ on-line detection, and improve the detection efficiency and the timeliness of the detection data.
Highlights
Shallow marine gas was widely distributed in the Gulf near the Yangtze River Delta and Hangzhou Bay area
The real-time in-situ on-line detection method for offshore shallow gas has become an urgent need for marine energy development and engineering construction in China
With the development of modern science and technology, some real time in-situ detection methods have been applied to the detection of shallow gas in the bottom of the sea
Summary
Shallow marine gas was widely distributed in the Gulf near the Yangtze River Delta and Hangzhou Bay area. The real-time in-situ on-line detection method for offshore shallow gas has become an urgent need for marine energy development and engineering construction in China. Each test must be penetrated into the seabed by the mother ship, which can not be carried out once and in a long time in situ continuous detection; the instrument was imported from abroad at present. All of these results increased the cost of real-time in-situ detection of methane in offshore shallow gas
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