圈闭定量评价——三因素综合排队法

TRAP QUANTITATIVE ASSESSMENT:METHOD OF THREE FACTOR SYNTHETIC QUEUING

刘伯土 朱允辉 高晓歌

Liu Botu Zhu Yunhui Gao Xiaoge

地质风险分析、油气资源量预测和勘探开发条件分析是区带评价或圈闭评价中3个独立的评价因素,三因素综合排队法就是针对上述评价模式提出的一种定量评价方法。该方法由双因素综合排队法引伸而来,其基本原理是将区带或圈闭的地质风险分析结果、油气资源量预测结果及勘探开发条件统一考虑在一个三维直角坐标系内,通过建立变量赋值标准和三因素综合排队公式将区带或圈闭3个独立的评价因素综合成一个排队系数。这一系数能比较直观地对它们进行综合评价和排序。在南沙海域万安盆地,通过三因素综合排队法对部分构造进行了圈闭综合评价和排队,区分出Ⅰ,Ⅱ,Ⅲ类圈闭,并指明有利勘探靶区。应用结果表明,该方法对于沙漠或海域等高风险、高投入地区的油气勘探靶区评价不失为较理想的综合评价方法。

The analysis of geological risks,the prediction of hydrocarbon resources exetents and the analysis of exploration and development condition are three independent factors in the assessment of zonules and traps.Three factor synthetic gueuing method is a guantitative assessement method proposed according to the above mentioned assessment mode.The method is derived from two factor gueuing method,the basic principle of which is to put the three factors in the same 3-D right angle coordinate system,and synthesize the three factors in one queuing coefficent by setting variable criterion and three factor queuinp formula.This coefficent could be used to evaluate and queu the traps and zonules directly.This method was used to evaluate and queu some structures in Wan'an Basin of Nansha sea area,and three types of traps were distingushed and exploration target areas were pointed.The results proved that this method is an ideal assessment manner for hydrocarbon exploration in deserts and sea areas.

10.11743/ogg20000421