中东叙利亚A油田碳酸盐岩油藏低阻成因分析
夏冬冬;司马立强;张庆红;庞雯
【期刊名称】《西南石油大学学报(自然科学版)》 【年(卷),期】2014(000)005
【摘要】J Formation in Oilfield A of Syria is a rare low resistance limestone reservoir in the world,with high porosity, low permeable matrix reservoir and with resistance of 0.5~5.0?·m lower than water layer. Because few studies have been made on the causes for this low resistance reservoir before,to correctly evaluate the reservoir,this paper analyzes the forming mechanism and dominating factors of low resistance carbonate oil formation. We found that the special geological background is the basic of petrophysical origin in low-resistivity oil formation. The petrophysical origin uncovers the essence low-resistivity in carbonate oil formation. Low amplitude structures and weak hydrodynamic sediment are the geological background of low-resistivity oil formation. High irreducible water saturation,high formation water salinity,additive conductivity of clay minerals and conductive mineral are the internal causes for low-resistivity oil formation. The formation of low-resistivity reservoirs in carbonate rock is the result of macroscopic geological background and microscopic petrophysics characteristics.%中东叙利亚A油田J组是世界范围内罕见的低阻碳酸盐岩油藏,基质储层高孔低渗,油层电阻率仅有0.5~5.0?·m,甚至小于水层电阻率。前人对该地区储