Received date: 2007-06-26
Revised date: 2007-08-06
Online published: 2007-10-10
The gas reservoirs of lower Triassic Jialingjiang formation belong to sour gas reservoir in Naxi-Tanghe area locate in the south of Sichuan basin.Their content of H2S are high in Luzhou palaeohigh.The content of H2S is more than 25~30 g/m3.Our studies show that the H2S of member 1 of Jialinjiang formation gas reservoir is mainly formed by cracked organic matter. H2S of member 2 of Jialinjiang formation and member 3~4 of Jialinjiang formation gas reservoir is mainly formed by thermochemical sulphate reduction.Types and contents of the H2S origin are determined by the gas accumulation process.Deep Silurian source of gas is upward migration and accumulation.Gas reservoirs of Jialingjiang formation show that content of biological origin H2S is less in early-mid Yanshanian.Most reservoir’s palaeogeothem of Jialinjiang formation more than 140℃ in late Yanshanian-early Himalayan epoch.Gas reservoirs that contain plaster rock occurred TSR reaction on alarge scale in member 2 of Jialinjiang formation and member 3~4 of Jialinjiang formation.This will form thermochemical sulphate reduction of the main causes of sour gas reservoirs.As the tectonic uplift to a significant reduction in temperature， TSR reaction slow down or even terminate in mid-late Himalayan epoch.Meanwhile， because of the dissolution of formation water to the H2S ， the content of H2S in sour gas reservoirs is redistribution and adjustment.This will form in different regions or different gas reservoirs are the big difference between the sulfur content.
LI Yan-Jun, LIU Lin, LIU Chen, LI Qi, YUAN Xu-Zu, YANG Jian . GENETIC OF SOUR GAS RESERVOIR IN LOWER TRIASSIC[J]. Natural Gas Geoscience, 2007 , 18(5) : 732 -736 . DOI: 10.11764/j.issn.1672-1926.2007.05.732
［1］李其荣， 王廷栋， 李延钧.全烃地球化学方法在复杂烃源研究中的应用［J］.西南石油学院学报，2005，27（3）：1-7.
［2］李其荣， 王廷栋，李延钧.泸州古隆起嘉陵江组油气成藏期的确定［J］.天然气工业，2005，25（7）：8-11.
［3］朱光有，戴金星，张水昌，等.含硫化氢天然气的形成机制及分布规律研究［J］.天然气地球科学，2004，15（2）：166-170.
［4］王一刚，窦立荣，文应初，等.四川盆地东北部三叠系飞仙关组高含硫气藏H2S成因研究［J］.地球化学，2002，31（6）:517-524.
［5］朱光有，张水昌，梁英波，等.四川盆地高含H2S天然气的分布与TSR成因证据［J］.地质学报，2006，80（8）:1208-1218.
［6］蔡春芳，李宏涛.沉积盆地热化学硫酸盐还原作用评述［J］.地球科学进展， 2005，20（10）：1100-1105.
［7］Machel H G.Relationships between sulphate reduction and ox-idation of organic compounds to carbonate diagenesis， hydrocarbon accumulations，salt domes， and metal sulfide deposits［J］.Carbonates and Evaporites,1989,4:137-151.
［8］Heydari E， Moore C H.Burial diagenesis and thermo-chem-ical sulfate reduction， Smackover Formation， southeastern Mississippi salt basin［J］.Geology，1989， 17:1080-1084.
［9］李延钧，李其荣，王廷栋，等.泸州古隆起嘉陵江组油气运聚规律与成藏［J］.石油勘探与开发，2005，22（4）:110-126.
［10］李延钧，李其荣，王廷栋，等.泸州古隆起下三叠统嘉陵江组成藏地球化学特征［J］.石油与天然气地质，2006，27（3）：363-369
［11］Machel H G.Saddle dolomite as a by-product of chemical co-mpaction and thermochemical sulfate reduction［J］.Geology，1987，15: 936-940.
［12］Machel， H G， Krouse H R and Sassen R.Products and dis-tinguishing criteria of bacterial and thermo-chemical sulfate reduction［J].Applied Geochemistry， 1995,10:373-389.
/
| 〈 |
|
〉 |
甘公网安备 62010202000678号