High-Resolution Sequence Stratigraphy And Selection Of Profitable Area In North Of Honggang Oilfield

Though they aren't really close at present, this paper will organic connect high-resolution sequence stratigraphy to the fine sedimentology. Then we unify the different level sequence interface, internal constitution and the spatial disposition, environment and process which it reflect, and research different levels isochronal stratigraphy rack and under sedimentary system tract control different level sedimentary facies or facies region the space mops, thus we research and forecast live, store, cover the three-dimensional space mops, the combination, the type. Through the comprehensive analysis of outcrops, rockcores, welllogs, seismic interpretation and ESR data, This paper studies the characteristics and identification sign of the different grade sequence interfaces and lake flood sedimentation in northern portion of Honggang oilfield, and one long-term , eleven middle-term , and twenty-seven short-term base-level cycle sequences are recognized . On the basis of these studies, the vertical sequence, facies association, lithologic composition, structure type and stacking pattern are discussed in detail. Among these sequences, it has discussed application prospect of the high-resolution sequence stratigraphy research results in the sub-area oil and gas development engineering.In the high resolution sequence stratigraphy research foundation, fully utlilizing the oil-gas reservoir formation system and so on modern oil gas geology new viewpoint, study the short-scale base-level cycle sequence (SSC) to main oil layers——Fuyu oil layer in the north of Honggang oilfield, and divide twelve individual reservoir of Fuyu oil layer in the north of Honggang oilfield to twenty-two short-scale base-level cycle sequence for the first time. for studying monosandstone body in space,It has laid the fine stratigraphy foundation. Through the division and the correlation of short-scale base-level cycle sequence of Fuyu oil layer in the north of Honggang oilfield, we establish high-resolution sequence stratigraphic framework of Fuyu oil field, and research fine sedimentary microfaciea of the short-scale base-level cycle sequence. thus we clarify tthe basic distribution characteristic of the reservoirs in research area. In this foundation ,unifying oil-gas pool geology characteristic, the essential factor of oil-gas reservoir formation ,oiliness, dividing and appraising the oil-gas reservoir formation system, and the oil-gas pool characteristic and the reservoirs distribution which discovered in the research area, We comprehensive forecast advantageous lithological trap of Fuyu oil layer in the research area , and determine advantageous exploration region.This have virtual directive value for the next development and the disposition of well location.