Coupling of Driving Force and Resistance for the Migration of Oil and Gas at the Periods of Hydrocarbon Accumulation in Southern Slope of Dongying Sag：Taking the Jin 8Bin 188 Section as an Example

Abstract

Abstract:

Taking the Jin 8-Bin 188 section in the west of Dongying sag as an example, this research rebuilt the evolution of driving force for hydrocarbon accumulation by basin modeling with the constrained procedure. The porosity and permeability of reservoir were recovered with charts of porosity evolution. The capillary force of reservoir was calculated, and the evolution of driving force for hydrocarbon accumulation was recovered when the capillary force was taken as the resistance force, and the evolution of the dynamic gradient for hydrocarbon accumulation was also simulated by coupling the driving force and resistance force. After the comprehensive analysis of the relationship between the evolution of dynamic gradient and the discovered hydrocarbons, this research predicted the favorable oil and gas accumulation zones. In the Jin 8-Bin 188 section, the damandbeach sands are the first-class favorable zone for the reason that the sands have the best condition for hydrocarbon accumulation; the turbidite fan lens at the slope and the delta sands at the gentle slope are the second-class favorable zone; the damandbeach sands at the bottom of slope are the third-class favorable zone.

Key words: Dongying sag;hydrocarbon accumulation process;dynamic gradient, resistance;driving force

CLC Number:

TE122.1

GAO Yong-jin, WANG Yong-shi, YU Yong-li, JIANG Zhen-xue, TIAN Miao. Coupling of Driving Force and Resistance for the Migration of Oil and Gas at the Periods of Hydrocarbon Accumulation in Southern Slope of Dongying Sag：Taking the Jin 8Bin 188 Section as an Example[J]. Geoscience, 2010, 24(6): 1148-1156.

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