地质学报2011，Vol.85Issue(9)：1536-1550,15.DOI:11-1951/P.20110907.1209.013
漠河多年冻土区天然气水合物的形成条件及成藏潜力研究
Gas Hydrate Formation and Its Accumulation Potential in Mohe Permafrost area,China
摘要
Abstract
Mohe region, one of the permafrost in China, with gas hydrate petroleum system developed in it, shows the good accumation conditions of gas hydrate. Permafrost, with 20-80 m in thickness, occurs inMohe area. Mohe permafrost is -0. 5℃~-3. 0℃ of the ground surface temperature, 1. 6℃/l00m ofgeothermal gradient, and exhibits a geotherm condition similar to Prudhoe bay in Alaska, Messoyakha in Siberia, and Muli area in Qilian Moutain. 204. 66 X 1012 cubic meters of hydrocarbon gas of Mohe basin, generating from 1000 or more meters of dark mudstones , is provided for gas hydrate formation. In Mohe basin, the uplifts and salients, bounded by faults, which, combined with fissures in rocks, make up conduits for hydrocarbon gas migration, act as trap for gas hydrate accumulation. The sandstones, siltstones made of the traps, with the mudstones of it for seal, are reservoirs for gas hydrate accumulation. Furthermore, calcite veins, epigenetic pyrite are prevalent in the cores, a great amount of hydrocarbon gas effused during the drilling. All of the mentioned above exhibit the good condition of gas hydrate and its great potential of accumulation.关键词
天然气水合物/多年冻土区/赋存标志/石油地质/漠河Key words
gas hydrate/permafrost area/indications of occurrence/petroleum geology/Mohe in China引用本文复制引用
赵省民,邓坚,李锦平,陆程,宋健..漠河多年冻土区天然气水合物的形成条件及成藏潜力研究[J].地质学报,2011,85(9):1536-1550,15.基金项目
本文为国土资源大调查项目(编号GZHL20110317)资助的成果. （编号GZHL20110317）
