Abstract: The Erlain basin is a large Meso-Cenozoic sedimentary basin in North China.It is in its initial stage of exploration,though oil flow of industrial value has teen encountered at many places.From our preliminary evaluation of the 31 depressions in the basin by fuzzy mathematics,it has been found that 5 of them are most favourable for oil occurrence geologically,while 2 have been confirmed to contain oil through exploratory drilling.With the application of multiinformation stacking and through computation,21 locations are believed to be oil bearing in the Manite depression; with the application of residual trend analysis,4 places are predicted to be geologic highs,and with the application of Monte Carlo method,petroleum reserve of several oil prospects has been estimated.It is anticipated that the Erlain basin may become a new oil base in North China.

摘要： 二连盆地是我国北方中新生代大型沉积盆地,目前,虽然处于早期勘探阶段,但已在多处钻到工业油流。本文应用模糊数学方法,将二连盆地的31个凹陷作了评价,其中有5个凹陷含油气地质条件最好,有两个凹陷已被钻探证实为含油凹陷;应用多种信息叠合评价法,通过计算得到马尼特坳陷的含油有利地区21个;应用残差趋势分析方法,预测阿尔善地区有4块高值区;应用蒙特卡罗法,估算了几个含油有利地区的石油资源量。评价结果说明,二连盆地勘探前景良好,可望成为我国北方新的石油工业基地。