笔架岭油田断层封闭性定量研究

Quantitative Study of Fault Sealing Performance in Bijialing Oilfield

断层封闭性能在不同地史时期可能不同,它与断层发育史、断层本身的几何学、运动学和动力学特征参数密切相关。以笔架岭油田构造为例,提取了该油田中影响断裂封闭性能的主要因素;确定了其评价标准划分和评价指标权重;运用模糊数学原理对断层的封闭性进行了综合评判;评价结果检验说明对该地区的油气藏实际分布评价是可靠的,为该油田油气勘探开发提供了科学依据。

Performance of fault is different in the period of different geologic history, it is closely related with characteristic parameters of fault development history, geometry , kinematics dynamics of the fault. The key factors influencing the fault sealing performance in the oilfield are extracted by using the structures in Bijialing Oilfield as examples. Its evaluation standard and evaluation indications are determined. Integral assessment is made on the fault sealing properties by u-sing the principle of fuzzy mathematics, inspection of the result shows that the practical reservoir distributional assessment of the area is reliable, which provides scientific basis for hydrocarbon exploration in the oilfield.