H区块低阻力流道识别与评价

发布时间：2018-06-19 07:12

本文选题：注水开发油田 + 低阻力流道　；参考：《东北石油大学》2015年硕士论文

【摘要】：注入水沿低阻力流道做低效循环或无效循环,使得油井产量下降,含水上升快。为改善注水开发效果,达到稳油控水的目的,有必要对低阻力流道进行识别和评价。本文针对H区块低渗透裂缝性油藏目前存在问题,运用动态分析方法,进行含水率分级,确定出39口特高含水油井;通过动态劈分方法,确定出特高含水层位;运用相关性分析确定高含水井的主要来水方向和来水层位。运用压力指数(PI)决策技术识别选出19口低阻力流道井。利用多指标综合评判方法对H区块103口油井、27口水井进行低阻力流道综合评判识别,确定出56口油井和12口水井存在低阻力流道,并确定了井间的41个低阻力流道层位。综合动态分析、PI值法和多指标综合评判方法,给出了H区块低阻力通道识别结果,并总结出低阻力流道的分布规律。通过对H区块储层沉积微相、油层非均质性和裂缝的发育情况剖析,确定了低阻力流道的主要控制因素。分析了储层沉积相等特征,计算了油层的渗透率级差、渗透率变异系数和突进系数,剖析了微地震、示踪剂前缘监测等测试资料,评价了储层特征、油层非均质性、裂缝发育情况等对低阻力流道形成及分布的影响。本文将动态分析法、压力指数(PI)决策技术和多指标评判三种方法结合,对低阻力流道进行识别与判定,使得识别结果更可靠,所得成果对油田开发具有指导意义。
[Abstract]:The injection water flows along a low resistance channel for inefficient or ineffective circulation, resulting in a decrease in oil well production and a rapid rise in water cut. In order to improve the effect of water injection development and achieve the purpose of stabilizing oil and controlling water, it is necessary to identify and evaluate the low resistance channel. In view of the existing problems of low permeability fractured reservoirs in H block, 39 super high water cut oil wells are determined by using dynamic analysis method and water cut classification, and the super high aquifer position is determined by dynamic splitting method. The main direction and horizon of high water cut wells are determined by correlation analysis. The pressure index (Pi) decision technique was used to identify 19 low resistance flow wells. In this paper, low resistance passage is identified in 103 oil wells and 27 wells in H block by multi-index comprehensive evaluation method. It is determined that 56 wells and 12 wells have low resistance channel, and 41 low resistance channel layers between wells are determined. By synthesizing the dynamic analysis of Pi value method and multi-index comprehensive evaluation method, the identification results of low resistance channel in H block are given, and the distribution law of low resistance channel is summarized. Based on the analysis of sedimentary microfacies, reservoir heterogeneity and fracture development in H block, the main controlling factors of low resistance channel are determined. The characteristics of reservoir sedimentation are analyzed, the permeability difference, permeability variation coefficient and penetration coefficient are calculated, the test data such as micro-earthquake and tracer front monitoring are analyzed, and the reservoir characteristics and reservoir heterogeneity are evaluated. The influence of fracture development on the formation and distribution of low resistance passage. In this paper, the dynamic analysis method, pressure index PI-based decision technique and multi-index evaluation are combined to identify and judge the low resistance flow channel, which makes the identification result more reliable, and the obtained results are of guiding significance for oilfield development.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE357.6

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