Research On The Main Controlling Factor Of Hydrocarbon Accumulation And Evaluation Of Project In Gaosheng Proterozoic Group Buried Hill

The study of accumulation main control factors is to determine the most affective condition of the hydrocarbon enrichment through the analysis of every condition of the hydrocarbon accumulation in the study area. The Gaosheng Algonkian buried hill is located in the western sag of Liaohe depression of the northern section of the west slope which is a relatively low degree exploration of the western depression. Choosing this area as the research object, the purpose is to find out in the work area industry the main controlling factors of hydrocarbon accumulation in the old, expand the scale of the reservoir area of exploration and development, to achieve a new breakthrough in the field of oil and gas exploration, provide backup relay base for continuous and stable development of oil field. The basic conditions of hydrocarbon accumulation are source rock, reservoir, cap rock, trap, migration and preservation, etc. However, only by the good configuration in time and space of this basic condition the hydrocarbon can accumulation. The understanding of reservoiring conditions is the basis of analyzing the main control factors. This paper make full use of seismic, drilling, logging, testing and analysis of test data, guided by the modern petroleum geology theory and exploration techniques, through stratigraphic classification and correlation of strata, find out Algonkian buried hill strata structure features and distribution of the implementation of the ancient world, at the top of the Archaeozoic fracture distribution characteristics and structure form. By oil source, reservoir and cap rock condition and accumulation mode of comprehensive analysis, find out oil and gas migration path and the oil window, summarizes the main controlling factors of hydrocarbon accumulation. Research shows that comprehensive promotion buried hill has good accumulation conditions, abundant supplies of oil and gas source, good reservoir conditions, the main part of Gaosheng which is the basalt eruption, rising subject development as the center and the thickness of basalt around thinning, high in the north region can be a regional cap rock, tectonic trap variety. On this basis, it is summarized in this paper hydrocarbon accumulation factors of the Gaosheng buried hill and the corresponding accumulation model. Analysis indicates that the source rocks, structure in the high place, sandstone and carbonate reservoir of middle-upper Proterozoic, the unconformity surface migration is the main controlling factors of oil and gas accumulation in the Chenjia sub-sag. The Gaosheng buried hill has a two-way oil accumulation model. Finally, the favorable target zone is evaluated in this paper. The promotion subject of buried hill is on the west side, stratigraphic northwest tilt, the latent one side slope is favorable area. Due to the similar attitude of stratum, the favorable reservoir distribution zone is not the same. The Gaosheng buried hill is incline, which development oil and gas reservoir on the top, in single type. The structure on either side of the lower part is the next step of exploration. The analysis of main control factors and objective appraisal of Gaosheng buried hill is really vital for Replacement area buried hill reservoir exploration.