我国油田水的离子组合特征

ION-COMBINATION CHARACTERISTICS OF SOME OIL-FIELD WATERS FROM CHINA

建国二十多年来，在毛主席无产阶级革命路线指引下，我国石油地质事业得到了蓬勃的发展。特别是经过无产阶级文化大革命，广大石油地质工作者，以阶级斗争为纲，坚持独立自主、自力更生的方针，在辽阔的国土上展开了大面积的石油地质普查勘探工作，发现了许多新油区，建成了很多新油田。事实证明，我国油气资源丰富多彩：含油面积之大、含油地层时代之长、成油-储油类型之多，都是世界各国罕见的，彻底粉碎了“中国贫油”的谬论。

Three types of oil-bearing structures are recognized in terms of ion-combination onthe basis of the chemistry of oil field waters from some major gas-oil basins in China: (1) Low total solid (<10 g/l), Cl^--HCO_3^--Na^+ combination with trace SO_4^(2-); (2) Medium total solid (10--60 g/l), Cl^--Na^+ combination, without SO_4^(2-); (3) High total solid (40--145 g/l), Cl^--Na^+ combination containing SO_4^(2-). Informations on the characteristics of ion-combination would be of practical signi-ficance in oil research and prospecting.