SL东部探区煤成气成藏封堵与疏导探讨

Discussion on envelopment and conduction of accumulation of coal-formed gas and reservoir in the east of Shengli exploration area

本文对煤成气成藏中的断层封堵及疏导进行了探讨,分析了断层活动持续性对圈闭形成早晚和封堵的影响,根据断层两盘地层对接关系,建立了7种断层封堵模式,定性分析各种模式封堵和疏导的利与弊,并讨论断层在三维空间的封堵和疏导,对煤成气成藏勘探目标的选择具有重要意义。

During accumulation of coal-formed gas,the fault envelopment and conduction are discussed. Firstly,persistence of fault activity that affects time of traps forming and fault envelopment is researched. Secondly,according to stratigraphic contact relation around faults,seven fault envelopment models are established to qualitatively analyze the advantages and disadvantages of fault envelopment and conduction of each model. And fault envelopment and conduction in 3D are discussed. If there are the principal components about source-reservoir-seal,researches on fault envelopment and conduction have great significances for selection of exploration target of coal-formed gas.