Research On Hydrocarbon Accumulation Condition Of Fuyu Oil Reservoir In Changchunling Area

Chang chun Ridge area oil and gas distribution complex reservoir types, reservoir maincontrolling factors are difficult to determine problems., this paper adopts the research methodsof sequence stratigraphy and hydrocarbon accumulation theory, the Fuyu oil layer of the studyarea conditions for hydrocarbon accumulationbeen systematically studied.Studies have showen that the area overall tectonic framework of the two concave long;tender inversion and the late Ming and strong inversion tectonic movement at the end of thestudy area constructed Changchunling anti clinal belt in the late Ming and strong anti-turnconstructed of formed and stereotypes; fracture of the Changchun anticlinal belt and the studyarea to intensive development with control of the study area to intensive development withcontrol of the area trap formation and hydrocarbon migration and accumulation plays a vitalrole.Oil and gas of the study area has two kinds of sources, crude oil mainly form SanzhaoDepression Qingshankou source rocks, natural gas form deep coal measure strata the riftShahezi and Huoshiling; irregular,scattered fluvial sand body of strong segmentation fault onthe sand body and polygenetic oil and gas traps filling the role of oil and gas distribution ofthe area mainly cause of complex phenomena.There are two accumulation model:high-pressure intrusion source rock-lateral fracturedivert-structuralhighs gathered accumulation model,and deep hydrocarbon generation-verticalfracture to ease-structural highs gathered gas accumulation mode.The area hydrocarbon generation,migration and trap formation of good organicconfiguration in space and time;the end of which water group is a hydrocarbon accumulationin the critical moment of the event in the area.Faultzone the deep rift as well as the source ofoil supply extent is mainly controlling factors in the area hydrocarbon accumulation.Reflective layer T2structure map of the area along the north-south or fracture of thenorth trends wipe the cloth-intensive band the high point of cutting,the base block is afavortable area of intrucsion of oil into the reservoir formation and development in theaccumulation modde;Changchun anticlinal belt in northern structural highs and deep faultsdeveloped with adeep gas accumulation model gas reservoir formation and development of afavorable area.