高尚堡沙三段油藏储层敏感性实验研究及其形成机理

SENSITIVITY EXPERIMENTAL STUDY AND ITS MECHANISM ANALYSIS OF RESERVOIRS IN THE THIRD MEMBER of THE SHAHEJIE FORMATION, GAOSHANGPU OILFIELD

常学军 尹志军

CHANG Xue-jun YIN Zhi-jun

中国矿业大学, 北京, 100083 2. 中国石油, 冀东油田, 河北, 唐山, 063004 3. 石油大学, 北京, 102249

China University of Mining and Technology, Beijing 100083, China 2. Jidong Oilfield Company, PetroChina, Tangshan, Hebei 063004, China 3. University of Petroleum, Beijing 102249, China

高尚堡沙三段储层为扇三角洲沉积,储层物性差,粘土矿物含量高,油田注水开发效果很差。论文应用岩心流动实验对高尚堡沙三段储层进行了敏感性研究,结果表明储层具有较强的速敏性、水敏性和碱敏性,盐敏性较弱。储层敏感性是影响高尚堡沙三段油藏开发效果的重要因素。通过对储层岩石成分和孔隙结构的分析,深入剖析了各类储层敏感性形成的机理,针对不同储层的敏感性提出了在注水开发和钻完井过程中应采取的相应对策。论文的研究成果有助于油田开发方案的调整,并在实验区块中取得了较好的开发效果。

The third member of the Shahejie Formation in Gaoshangpu oilfield is a set of fan delta deposition, which is characterized by bad physical properties and abundant clay mineral. As a result, its development effects were low. Reservoir sensitivity was studied in this paper through the core flow experiment. The results showed that the reservoir possessed strong velocity sensitivity, water sensitivity, alkali sensitivity and poor salt sensitivity. Reservoir sensitivity is a main factor to influence development effects. On the bases of rock composition and pore structure analysis, the formation mechanism of different sensitivity was analysed respectively, and the pertinent measures to control sensitivity in the course of development were brought out. The results of this paper is helpful to adjust reservoir development plans and made good effects in the experimental area .

国际科技合作重点项目基金(2002CB713906).

https://doi.org/10.11781/sysydz200401084