杏南開(kāi)發(fā)區(qū)點(diǎn)壩側(cè)積體配套挖潛技術(shù)研究
[Abstract]:In the middle and late stage of oilfield development, a large number of oil and gas have been produced, with multi-wells and multi-layers with high water cut, and the remaining oil is highly dispersed on the whole, and there is a pattern of relative enrichment sites in some areas, which is equivalent to "oil searching in water". Especially in the point bar sand with high oil abundance and strong heterogeneity, the distribution of residual oil is extremely complex. How to effectively determine the distribution of remaining oil in point dam sand is a difficult problem in the process of development and adjustment for the oilfield with point dam sand body developed in the late stage of high water cut. It is of great significance to increase the reservoir and production of such oil fields in the future. In this paper, the logging facies model of abandoned channel is established by vertical log curve, and the abandoned channel is identified by using the relative depth method of sand roof on the plane, and the recognition of single sand body is realized. Based on the theory of internal building structure and field outcrop data, the identification mark of point dam of meandering river channel is studied. According to the size of the ratio of A / S, the distribution pattern of point dam sand body is determined, that is, under the condition of similar geomorphological condition, the distribution pattern of point dam sand body is determined according to the value of A / S ratio. With the decrease of A / S ratio, the frequency of river migration and diversion increases, and the point bar sand body develops from point to scale. According to the characteristics of log response, the quantitative relationship between the span of a single point dam and the width of the active channel and the relationship between the angle of the lateral accumulated layer and the ratio of width to depth of the river in the interior of the point dam are determined. On the basis of analyzing the production status of point dam sand body and the distribution characteristics of remaining oil, it is proposed that the remaining oil of point dam sand body mainly distributes vertically in the high water cut part of point dam sand body. The plane is influenced by the special well pattern and the development system and so on the comprehensive factor has the high complexity; Finally, the individualized treatment scheme of single well is worked out, and the matching technology of tapping potential of different origin point bar sand body is formed. The research results of the project are of great significance to guide the study of the residual distribution characteristics of the sand in the point dam at the late stage of high water cut and to tap the potential.
【學(xué)位授予單位】:東北石油大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2015
【分類號(hào)】:TE327
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