论文部分内容阅读
骨架砂体是油气输导体系的主要要素之一,对其进行输导能力量化评价是目前重要的研究方向和勘探实践的需要。以东营凹陷南斜坡东段沙三段中亚段—沙二段骨架砂体为例,对骨架砂体输导要素与油气显示的关系进行统计分析,研究骨架砂体的厚度、顶面形态、产状、物性(毛管压力)等属性与输导能力之间的关系,开展输导机理研究及输导能力量化评价。结果表明,宏观意义上的骨架砂体产状、微观意义上的骨架砂体物性与油气显示的关系明显;骨架砂体的输导机理是骨架砂体产状与非均质性的耦合控制了油气的运移路径,并通过物理模拟实验进一步验证了该结论;初步建立了表征骨架砂体输导能力的量化计算方法,提出了骨架砂体输导能力指数,精细刻画了油气的优势运移路径,可对中国东部陆相断陷盆地油气勘探提供一定的参考。
Skeletal sand body is one of the main elements of oil and gas transmission system. It is an important research direction and the need of exploration practice to conduct quantitative evaluation of its transportation capability. Taking the sandbody of the second member of Es3 Member to Es2 member in the east part of South Slope of Dongying Depression as an example, the relationship between the element of transport and the oil and gas of skeleton sand body was analyzed. The thickness, top morphology, The physical properties (capillary pressure) and other properties and the relationship between the ability to guide the conduct of conducting mechanism and the ability to conduct quantitative guidance. The results show that there is a clear relationship between the physical properties of the skeleton sand bodies in the macro sense and the oil and gas in the microscopic sense. The transport mechanism of the skeleton sand bodies is controlled by the coupling between the occurrence and the heterogeneity of the skeleton sand bodies This paper also verifies this conclusion by physical simulation experiments. The quantitative calculation method of characterizing the transportability of the skeleton sand body is preliminarily established. The index of the transportability of the skeleton sand body is proposed and the dominant migration of oil and gas is well described It can provide some references for oil and gas exploration in the continental rift basin in eastern China.