大庆榆树林地区油气资源评价

Resource Assessment in Yushulin Area of Daqing Oilfield

针对勘探程度较高的大庆榆树林地区,为进行油气资源评价,采用实用性较强的油藏规模序列法进行了预测.该方法最大的优点就是勘探程度越高,其评价的精度也越高.它的理论基础是Pareto定律,以每个油气藏的地质储量为纵坐标,以油气藏的规模序列为横坐标,在双对数坐标纸上油气藏分布呈直线系列.用该方法对榆树林地区的油气资源量进行评价,取得了较为满意的结果.认为在该地区目前具有经济价值的尚未发现的油藏还有148个,其地质资源量接近8 976×104t.

According to the exploration degree in Yushulin area the reservoir size sequence method is applied to evaluate its resource in order to improve the accuracy of resource assessment, which is more practical, and which most advantage is that the accuracy is increasing with the exploration degree. The theoretical foundation of the reservoir size sequence method is Pareto law. Reservoir distribution show a line relationship in a log-log coordinate system, in which Y-axis is reserve and X-axis is reservoir size sequence. This method is usually used by most oil producing countries to predict the resources and it is more effective. In this paper the method is also used in Yushulin-Shengping-Xujiaweizi area resource assessment. The result is satisfied. There are 148 commercial reservoirs undiscovered at present, which reserves are up to 8 976 × 104t.