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mercury concentration in natural gas and its distribution in the Tarim Basin

Science China Earth Sciences 2013年第5期56卷 1371-1379页

作者： LIU QuanYou Research Institute of Petroleum Exploration & Production SINOPEC

Here I collected natural gas samples from 41 industrial gas wells in the Tarim Basin,and studied the mercury distribution in the *** data show that there is certain regularity in the distribution of mercury in the Tarim ***,the mercury concentration is high at the edge of the basin and low in the central *** highest mercury concentration occurs in the Southwest Depression,ranging from 15428.5 to 296763.0ng/m3 with an average of 156095.7ng/m3,followed by the Kuqa Depression ranging from 15.0 to 56964.3ng/m3 with an average of 11793.7ng/m3,and the Hade oil and gas field in the North Depression has the lowest mercury concentration ranging from 17.7 to 3339.5ng/m3 with an average of 1678.6ng/*** mercury concentrations in the natural gases of different structural units are various,with the highest mercury concentration in the zone of strong structural activity of Southwest *** is profitable of Hg accumulation in the self sourced and self accumulated gas reservoirs or volcanic existence;in contrast,the low Hg concentration exists in the secondary gas *** mercury concentration in the natural gas generated under continental depositional environment is higher than that in marine ***,the mercury concentration in the natural gases is constrained by gas genesis,depositional environment of source rocks,tectonic activity,and volcanic activity,and the tectonic activity is the main factor for the mercury concentration in the natural gas,followed by volcanic activity and depositional environments.

关键词： Tarim Basin mercury concentration tectonic activity depositional environment gas genesis volcanic activity

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