【摘要】 选用萨东过渡带天然岩心 ,分析了其基本物性及敏感性 .结果表明 ,萨东过渡带油层可分为萨尔图组和葡萄花组 ,萨尔图组属于低渗 -中渗油层 ,粘土含量高 ,阳离子交换容量高 ,表现为较强的水敏性 ;葡萄花组属于中渗 -高渗油层 ,阳离子交换容量小 ,粘土含量低 ,表现为中等强度的速敏性、水敏性 .对储层采取保护措施后 ,实验区平均单井日产油提高了 3.0 5t ,含水率下降了 10 .3% ,表皮因数降低了 0 .74 .更多还原

【Abstract】 Using the natural core of Sadong transition area, the basic properties and sensitivity are analysed. The oil formation of Sadong transition area can be divided into Sa’ertu group and Putaohua group. The permeability of Sa’ertu group is from low to middle. The content of clay and the cation exchange content are high. The oil formation has highly water\|sensitive. The permeability of Putaohua group is from middle to high. The contents of clay and the cation exchange content are low. The oil formation is of middle velocity\|sensitiveity and water\|sensitivity. The experiment of oil formation protection shows that the oil prodution improves by 3.05 t/d and the water ratio decreases by 10.3%. The surface factors decrease by 0.74.更多还原