贝尔凹陷水文地球化学特征与油气藏的关系

摘要

贝尔凹陷地下水属于低矿化度的NaHCO3型水,含有较高的可溶气态烃、酚、脂肪酸等有机组分和溴、硼等微量元素.它们随着地下水的运动方向呈现有规律的变化,已发现的2个油田,有明显的水化学异常存在.从已知推未知,预测凹陷的含油气远景,为油气勘探开发提供了水文地球化学依据.%The underground water type of Beier depression is NaHCO3 with low salinity.The water contains many organic compounds such as soluble gaseous hydrocarbon, phenol and fat acid and Br, B and other trace elements.These organic compounds change regularly in the flowing direction of the underground water.The characteristics of water chemistry are obvious abnormal in two discovered oilfields.The data obtained provide a hydrogeochemical basis for the exploration and development of reservoirs through the prediction of hydrocarbon potential in the depression.