【作者】 魏华彬；

【导师】 刘吉余；

【作者基本信息】 大庆石油学院 ， 矿产普查与勘探， 2009， 硕士

【摘要】 目前,我国的大部分油田经过几十年的开发(包括注水开发),已进入高(特高)含水开发阶段,开采效率明显下降。因此高含水期油田开发与调整的主要任务就是“寻找剩余油,开采剩余油”。大庆油田经历近50年的注水开发,目前已累积生产原油19.5×108t,采出地质储量近42%。还有近60%的地质储量滞留在地下。如何搞清地下各类油层中剩余油的潜力及分布,是大庆油田高含水后期的重要课题。针对油田开发面临的地质问题,本文以高含水期剩余油分布、高含水期剩余油定量评价为研究范围,对高含水期剩余油综合评价方法进行研究。通过对高含水期油田剩余油的分布规律、剩余油分布的控制因素以及采出程度影响因素分析,结合单井层剩余地质储量计算方法、单井层产注量劈分方法研究,对高含水期剩余油多种综合评价参数及方法进行优选,结合高含水期剩余油综合评价系统软件的编制,达到对高含水期剩余油进行综合评价和预测方法研究目的。剩余油研究是各石油生产国颇为重视的一项世界性的研究课题,已经成为国际石油学术界急于攻关的难题之一,引起世界各石油生产国的普遍关注。萨尔图油田,经过四十余年的注水开发,目前油田已进入高含水开发阶段,随着油田开发工作的不断深入开采效率明显下降,油气开采的难度越来越大,为了油田的稳产,为了提高采收率,加强对高含水期剩余油分布和评价的研究,不仅具有重大的理论意义,而且对于搞好油田的后续开发、稳定和提高采收率具有重要的现实意义。更多还原

【Abstract】 At present, most of China’s oil fields after decades of development (including flood development), has entered the high (extra high) water cut development period, and the recovery efficiency has declined markedly. Therefore the main task of oil field development and adjustment in high water cut period is to "look for residual oil and exploit residual oil." Daqing oil field has gone through 50 years of flood development, the cumulative production is currently 1950 million tons of crude oil, and the produced geological reserves is nearly 42%. There are almost 60% of the geological reserves still underground. How to make clear residual oil potential and distribution of all kinds of reservoir underground is an important subject of Daqing Oilfield at later stage of high water cut.For geological problems faced by oil field development, the passage regard the residual oil distribution and quantitative evaluation in high water cut stage as the scope of study and research the residual oil comprehensive evaluation method in high water cut stage. Through the analysis of residual oil distribution rule, distribution control factors and affecting factors of degree of reserve recovery, combined the study of calculation procedure of remaining geological reserves and divided method of input and output rate in a single well layer, optimize the residual oil evaluation parameters and method in high water cut stage. Combined the residual oil comprehensive evaluation software in high water cut stage, achieve the purpose of residual oil comprehensive evaluation and prediction method study in high water cut stage.Study of residual oil is a worldwide priority research topic for the oil-producing countries and has become an eagerly resolved difficult problem of the international oil academics which causes common concern of the worldwide oil-producing countries. Saertu oil field, after more than forty years of flood development, has currently entered the high water cut development period.development phase. With the development of the oil field becoming more deeply, the recovery efficiency decreases markedly and the exploitation of oil and gas becomes more difficult.In order to keep rate maintenance and enhance oil recovery, strengthening the study of residual oil distribution and evaluation in high water cut stage is not only of great theoretical significance, but also of important practical significance for bettering sequel development, recovery stability and enhancement.更多还原