Structural Characteristics and Hydrocarbon Accumulation of Relay Ramp in Liaoxi Lowuplift, Bohai Bay Basin

Abstract

Abstract:

Relay ramp is an important structural style to accommodate regional strain balance.According to new 3D seismic data interpretation, fault displacementdistance relation and seismic coherence slice analysis, this paper discussed some features of the relay ramp in Liaoxi low-uplift, Bohai bay basin, and briefly analyzed the relationship between relay ramp and hydrocarbon accumulation of buriedhill reservoir.The seismic profile interpretation indicates that the relay ramp of buriedhill belt in Liaoxi low-uplift connects footwall of Liaoxi No.1 fault and hangingwall of Liaoxi No.2 fault.On the seismic coherence slices, lateral connection with Liaoxi No.1 fault and Liaoxi No.2 fault is very clear.However, according to the fault displacementdistance relation, Liaoxi No.1 fault displacement is gradually transferred to Liaoxi No.2 fault along the faults strike. At the same time, this displacement is fundamental to maintain conservation in relay ramp.The relay ramp's significance for hydrocarbon accumulation is mainly exhibited in the formation and transformation of buriedhill reservoir.High quality reservoir is the material base of JZ25-1S buried-hill hydrocarbon reservoir

Key words: relay ramp, transfer structure, hydrocarbon reservoir, hydrocarbon accumulation, Liaoxi low-uplift, Bohai bay basin

CLC Number:

TE122.1

YANG Ming-Hui, ZHOU Xin-Huai, WEI Gang, LIU Le, LI Chun-Xia. Structural Characteristics and Hydrocarbon Accumulation of Relay Ramp in Liaoxi Lowuplift, Bohai Bay Basin[J]. Geoscience, 2010, 24(4): 749-754.

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