Study On The Main Controlling Factors Of Oil Column Of Faulted Reservoir

To discuss the main controlling factors of oil column of faulted reservoir deeply, the difference characteristics of oil column of faulted reservoir and affecting factors of Dongxin Oilfield are systemically studied in this paper based on the abundant data and research of this area, using petroleum system for reference together with applying the theories and methods of geology and structural geology.Starting from the geological background, on the basis of detailed anatomy of fault system in Dongxin Oilfield, the paper counts the oil column of different structural and summarizes its distribution characteristics, then studies the relation between oil column and conduction capacity and fault salability of fault and reservoir and seal character. Main controlling factors of oil column are established and quantitative characterized by means of analytic hierarchy process.Oil column of different structural are different obviously. Oil column are highin in the flank of anticline and low in the core. The fault of the area can be divided into three kinds: oil source fault, transport fault and occluded fault. The distances to the source fault and transporting capacity control the distribution characteristics of oil column in plane. In the flank of anticline which oil source is sufficient, results show that, there are both positive correlation between oil column and SGR and fault throw. When the fault dip is small, the oil column is high. In addition, there is certain relevance between the thicknesses of cap rock and the oil column. In the block of the same fault sealing, reservoir characteristic controls the oil column .Physical properties and the thickness of the reservoir are positive related with oil column in some degree. At last, by analytic hierarchy process, the paper founds the quantitative relationship between oil and the main controlling factors.