Research For Oil And Gas Play Axiom In The Depressed Middle Part Of Easter Liaohe Basin

The project developed the research for oil and gas play axiom on the basis of the deepdisquisition of oil geologic axiom in the depressed middle part of easter Liaohe basin,drawing up a plan for beneficial target. Its central guideline has reached domestic advancedlevel. The research involves the following contents:developing the fine interpretation ofstructure,compiling the reservoir top structure map; examining the fracture throughgoingaxiom and structure evolutionary feature; precipitation facies division and reservoirmicroscopic feature research; reservoir inversion, analysing the reservoir distribution andphysical property alternation feature of the detrital stone, volcanic rock in western rampregion and Huangsha Tuo-Ouli Tuo structural belt; reservoir master element and play patternresearch.The achievements in this project are as follows: region of interest can be divided intomedian faulted anticlinal structural belt and western ramp region, the main badly faultinginduced large-scale volcanic rock eruption, western fault along boundary distributed bandedly;the region precipitation facie belt is confined, depositional system scale is small and thechange is very fast, it mainly develops several precipitation facie belts such as alluvial fan,scalloped delta and bet lands; the region has two kinds of reservoir, detrital stone and mixpah,there are heavy sandstone and volcanic rock in western ramp region; the volcanic rock is themain reservoir in median faulted anticlinal structural belt; in the region of research, oil andgas distributed plane has inhomogeneity, the burial depth is deep on longitudinal direction,and has much oil and gas layer systems. The main typies of reservoir are structuralhydrocarbon reservoir, non-structured hydrocarbon reservoir and commingled hydrocarbonreservoir. The hydrocarbon master elements are structure, fault, reservoir and trap allocation,beneficial reservoir facies belts and hydrocarbonic mother rock, etc. The appreciation andoptimize for target area have been operated from the aspects of oil producing condition,reservoir condition, overburden condition, oil and gas escaping condition and conservingcondition, pointing out the near and far term exploration target. The achievement andknowledge acquired has big direction and reference affection to Liaohe oil field hydrocarbonrolling exploration.