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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 .
The natural core of Sodon transitional zone was selected to analyze the basic physical properties and sensitivity.The results show that the Sudonian transition zone can be divided into the Salto Formation and the Putaohua Formation and the Salto Formation belongs to the low permeability - High content of cation exchange capacity, showing strong water sensitivity; grape group belongs to the permeability - high permeability reservoir, the cation exchange capacity is small, low clay content, showed moderate intensity of the speed sensitivity, water sensitivity. After protective measures were taken on the reservoir, the average single well daily oil production in the experimental area was increased by 3.05t, the moisture content decreased by 10.3% and the epidermal factor was decreased by 0.74.