油砂体

通过对油砂体分布及砂地比的综合研究，确定在主力油层集中发育、有效厚度大于4m及砂地比大于0.4的区域部署开发。

Based on the distribution and oil-bearing sand body rather than the comprehensive research of the major reservoirs , determine the centralized development , effective thickness is greater than 4m and sandstone thickness and stratum thickness ratio more than 0.4 areas deployment .

灰色聚类在油砂体评价中的应用

The Application of Grey Clustering in Oil-sand Evaluation

在实践中应从四个方面考虑注氮气与增产油量之间的相应关系：1、注氮气量与油砂体孔隙体积；2、注氮气位置与地层倾角对注氮气效果的影响；

This paper introduced 4 corresponding relationships between nitrogen-injection and increase production to be considered in practice .

油砂体作为一种信息不全的灰色系统，可以运用灰聚类理论对其性能进行综合评价。

The information is imperfect in oil-sand , and it can be investigated by the Grey clustering .

绘制了长61、长62、长63油砂体的平面分布图，确定了水下分流河道的位置。

By drawing the distribution maps of the sand bodies , the location of the submerged distributary channel deposits are determined .

分析形成异常高压区的原因有3个：储层砂岩体中粘土矿物的存在、孤立油砂体的不连通性及加密注水井。

Three reasons for abnormal pressure are respectively clay minerals in sand reservoir , noncommunicating isolated oil sandstone , and concentrated injection wells .

油层划分对比：对现有井进行重新对比和刻画。绘制砂岩、有效厚度分布图，分析了油砂体的分布特征。

Reservoir subdivision and correlation : Comparison of existing wells and re-characterization . Draw sandstone , effective thickness distribution , analysis of the distribution of the oil sands . 3 .

地质法预测剩余油的关键是要建立高精度的地质模型及对油砂体动用状况的明确认识。

The key of geology method to predict remaining oil is to construct geology model with high accuracy and to have a clear recognition on production degree of oil sand .

在剩余油定性研究的基础上，基于油藏工程理论的综合评价，建立了油砂体阶段驱油效率与注入倍数的关系，进行波及系数分析等；

Based on qualitative research to surplus oil and comprehensive analysis to reservoir , this paper sets up the relation between stage displacement efficiency and oil-injection volume , and analyzes the waves and coefficient .