Qilicun Oil Regional Reservoir Description

The project in the thin layer division and contrast basis, in the long6top contrast logo layeras a reference surface, according to the thickness of the strata and structure mapping, analysisshows that the area within the overall structure of the East West High low wide gentle slope,construction of internal development of a series of low amplitude nose like micro structures. Forextra low Kong Te reservoir and low permeability reservoir, the average porosity is8.3%,average permeability is0.56Md. Analysis of the reflection of the reservoir of Yanchangformation, delta sedimentary development under the background of the shallow river, the Chang6oil formation mainly developed delta front subfacies. The heart beach, underwater distributarychannel, interdistributary bay, floodplains are the main sedimentary microfacies. And delta frontsubaqueous distributary channel sandstone is the main reservoir. Chang6Chang61and Chang62mainly developed two main reservoirs, long63, long64local development, at present not oiltest, production test confirmed its oiliness, of which614and622long two reservoir is the mainreservoir and stable distribution, the implementation of the plan establishment, the total oil areais14.26km2, average oil layer the effective thickness is6.07M, the estimation of petroleumgeological reserves of317.4×104t.