Sichuan Basin Jurassic Shallow Gas Accumulation Characteristics

The oil and gas accumulation process research is the oil and gas bearing basin research important content,has the extremely important geological significance.According to recent years becomes the accumulation process research to the oil and gas the example to think that, The oil and gas geochemistry characteristic besides has "the source to control"the characteristic,but also has noticeable is become the oil/gas the accumulation process comtrol the characteristic;To a local hydrocarbon source rock appraisal,to the high mature hydrocarbon source rock vitality potential appraisal,has not been able only to pause especially under the static condition appraisal,must combine to form the accumulation process quality synthetic evaluation.The Sichuan basin is one ancient large-scale folds including the oil and gas gathers the basin,take the gas bearing primarily,contains oil auxiliary as.This article in the entire Sichuan Jurassic gas reservoir exploration development present situation analysis foundation, throughto Pingluoba,Baimamiao,Xiaoquan-Xinchang,Daxingxi,Dukouhe,Bajiaochang, Fuchengzhai hold and so on the typical gas reservoir analysis,unifies its deposition,the structure,the reservoir characteristic research,summarizes primary factor which the control Jurassic series natural gas pool forms,provides the geological basis for the gas exploration.The untion example,the synthesis utilization geology,the geochemistry research technique,to becomes the accumulation condition to carry on the analysis,throught the Jurassic gas reservoir the formation should havefollowing several aspect geological condition disposition,namely sufficintgas source condition,good reservoir granulated substance body distribution,growth gas source break or crack,as well as certain scaletrap contion and good preserved condition.And take this as the basis,elaborated the Jurassic shallow layer natural gas becomes he accumulation characteristic.