The Comprehensive Evaluation Of Hydrocarbon Accumulation Conditions In Buried Hill Of Baxian Depression

In this paper studied buried hill of Baxian depression. Used seismic, geology, well logging and other data, combined with the geochemical studies method. This paper analyzed the buried hill hydrocarbon accumulation and reinstated the basic elements of oil and gas accumulation, explored the basic process of hydrocarbon source rocks, reservoir, cap rock, migration, traps, preservation and so on various factors, analyzed the characteristics of each stage and matching relation. Based on the above work, complement buried hill hydrocarbon accumulation conditions of comprehensive evaluation, analyzed LongHuZhuang and SuQiao buried hill hydrocarbon accumulation. Because of those, completed favorable prediction of exploration zones.Baxian depression development promoting type peace line-like basement structure, development has approximately parallel with the main fault of the reverse is fault, sag of oil and gas source from the inside of the ancient near deep hydrocarbon source rocks, within Baxian subsags around a ring belt distribution. Zone development reservoir-cap combination of the mansion, Cambrian JunShan group, Ordovician fengfeng group and majiagou group, jixian department fog fan mountain is a good group of reservoir. The effective trap Baxian depression development are distributed in the main structure bring, plus large faults by unconformity, reservoir and permeability of the migration network, making huge oil-gas source constantly to deep buried reservoir migration. According to trap implement effective and reservoir good, communication oil-gas source conditions are good and accumulation of the principle of evaluation, favoratble zones Baxian two steps, predicted the brisk palace, ShiGeZhuang buried hill band for the history for exploration areas.