复合驱油体系与孤东油田馆5^2^＋^3层原油间的界面张力

本文报导了用于孤东油田馆5~(2+3)层复合驱油试验的ASP体系与原油间界面张力的研究结果。在ASP复合驱油体系中,碱A和表面活性剂S在降低界面张力上有协同效应,聚合物P的影响很小。在单一A和A+S体系中最佳碱浓度为0.2％和1.5％(Na_2CO_3)。1.5％Na_2CO_3+0.4％OP-10体系有最佳界面特性。

DYNAMICAL INTERFACIAL TENSIONS BETWEEN CRUDE OIL AND ALKLINE/SURFACTANT AND ALKALINE/SURFACTANT/ POLYMER FLOODING SOLUTIONS FOR STRATA G5~(2 + 3) OF GUDONG OIL FIELD

Nonionic surfactant OP-10(S) is selected out from seven surfactants of various type and alkaline Na_2CO_3(A) is used in this work as a part of a program on combined chemical flood in strata G5~(2+3) of Gudong Oil Field,Shengli. The interfacial tensions(IFTs) between crude oil(O) and A solutions are lowered by 1-2 magnitudes by introducing a little(0.1%) S. The minimum IFTs in O/A and O/A+S systems are observed at A concentrations 0.2% and 1.5%, respectively. The optimum IFT characteristics are given by 1.5%A+0.4%S solution. 0.1% polyacrylamide added to A+S solutions does not influence much on their IFT characteristics.