Distribution Rules Of Natural Gas In The Dehui Rift Huoshiling Group

This article through to Dehui rift Huoshiling group of gas rules geological background,comprehensive and systematic study Dehui rift Huoshiling group of gas rules conditions.Nmely:Hydrocarbon generation conditions,trap conditions.And gas accumulation patterns andanatomical analysis of typical gas reservoir,to determine the distribution of natural gas.Basedon the study ydrocarbon generation conditions,reservoir conditions,caprock conditions,trapconditions. And gas accumulation patterns and anatomical analysis of typical gas reservoir,todetermine the distribution of natural gas.Can affect the distribution of natural gas accumulation of several important geologicalfactors include:Mature hydrocarbon source rock distribution control range and gas migration,distributary channel sand body of high quality reservoir space distribution,distribution controlfracture channel blocking effect of natural gas;Inheritance of the nose structure is the directionof hydrocarbon migration advantage;The construction control of the gas accumulationeffect;Sequence structure,slope break belt,overpressure zone for gas accumulation.Dehui fault depression of songliao basin fire stone mountain group of natural gas in theplane is controlled by deep fault depression,have found that the gas accumulation in rift,fracture development with a good migration accumulation gas:the structure of the long-termdevelopment and the ancient uplift is the bellwether of gas migration;The late reversal activityis conducive to gas accumulation.Dehui downfaulted fire stone mountain group of longitudinal distribution of natural gasis a fault controlled organic gas source,basal fracture control of deep source gas source,NWand NE to the basement faults control the volcanic reservoir,fracture and unconformitysurface control of gas migration. Deep gas plane distribution rule is a half ring distribution,and concentration distribution in the northwest.In this paper,through a large number of research make Dehui fault drilling layering andearthquake whether this issue is resolved,and successfully established DeHui downfaulted firestone mountain group of stratigraphic framework,and determine the distribution of naturalgas,gas exploration target for Dehui fault fire stone mountain group has made the forecastwork,has the vital significance.