Using geochemical tracing system to identify new types of gas sources in marine strata of the Hotan River Gas Field in the Tarim Basin  

作　　者：WenHui Liu DianWei Zhang Bo Gao Ming Fan 

机构地区：[1]Exploration and Production Research Institute, Sinopec, Beijing 100083, China

出　　处：《Science China Earth Sciences》2010年第6期844-853,共10页中国科学（地球科学英文版）

基　　金：supported by Petroleum & Chemical United Fund Project (Grant No. 40739902).

摘　　要：There are natural gas sources of various modes of occurrence in superimposed basins. Besides the conventional kerogen and ancient oil reservoir, dispersed soluble organic matter (DSOM) is an important direct gas source. Because of its wide distribution, great potential to generate gas and proneness to crack under catalysis, DSOM is an important type of gas source in the highly evolved zones in marine strata. Through the geological and geochemical analysis that reflects the long-period evolvement and multiple gas accumulation processes in marine strata, and using the ternary geochemical tracing system, here we study the origin and accumulation of the natural gas in the Hotan River Gas Field in the Tarim Basin. The natural gas is produced from highly evolved and cracked DSOM in the Hotan River Gas Field, and it is accumulated after migrating for a long distance along faults. This conclusion is of great significance to the further expansion of the oil and gas exploration fields in the Tarim Basin.There are natural gas sources of various modes of occurrence in superimposed basins. Besides the conventional kerogen and ancient oil reservoir, dispersed soluble organic matter (DSOM) is an important direct gas source. Because of its wide distribution, great potential to generate gas and proneness to crack under catalysis, DSOM is an important type of gas source in the highly evolved zones in marine strata. Through the geological and geochemical analysis that reflects the long-period evolvement and multiple gas accumulation processes in marine strata, and using the ternary geochemical tracing system, here we study the origin and accumulation of the natural gas in the Hotan River Gas Field in the Tarim Basin. The natural gas is produced from highly evolved and cracked DSOM in the Hotan River Gas Field, and it is accumulated after migrating for a long distance along faults. This conclusion is of great significance to the further expansion of the oil and gas exploration fields in the Tarim Basin.

关 键 词：dispersed soluble organic matter (DSOM) cracking GAS Hotan RIVER GAS Field carbon ISOTOPIC composition geological TRACING system 

分 类 号：N[自然科学总论]