Abstract:

Different vertical accumulation of hydrocarbon in the faults means different enrichment degree and different maturity of hydrocarbon. According to different vertical accumulation of hydrocarbon in the faults, vertical distribution of hydrocarbon can be predicted from the analysis on the found hydrocarbon show and variation of reservoirs. Combination pattern of faults has a control on the oil-gas migration and accumulation; parallel combination results in hydrocarbon enrichment near the hydrocarbon source kitchen and scarcity far from that in the plane, whereas vertical combination may result in hydrocarbon enrichment both near and far from that; Comb pattern transports more hydrocarbon to the shallow reservoirs and umbrella pattern transports less hydrocarbon relatively in the profile.

Key words: fault controlling hydrocarbon, combination pattern of faults, reservoir-forming dynamic, Nanpu Sag