目前油田开发聚合物驱油技术在进入高含水阶段，油田三次采油技术面临新的挑 战，杏北开发区纯油区一类油层三次采油潜力逐年减少，三类油层三次采油试验仍在开 展。过渡带地区一、二条带一类油层发育与纯油区相近，葡Ⅰ1～3 油层可动地质储量 1909 万吨，目前水驱开发调整难度逐年加大，所以有必要开展过渡带地区一类油层三次 采油可行性研究，夯实持续稳产的储量基础。 本文分析了杏北开发区过渡带一类油层三次采油的可行性，从油层发育、储量特征、 确定聚合物驱的注入参数，井距确定，井网部署进行了可行性阐述，并根据实际经济效 益选取最优布井方案。应用井震结合，对过渡带一类油层砂体进行了精细刻画，根据过 渡带已部署井网的油层发育状况和生产状况，落实了葡Ⅰ1~3 油层剩余地质储量，预测 了平面上剩余油分布状况；开展不同聚驱注入参数室内驱油实验，优选出最佳聚驱注入 参数，并评价驱油效果。在过渡带现有井网的基础上开发井网方案，结合数值模拟技术 进行不同井距、井网、层系组合开发效果评价，优选出最佳的井网、井距和层系组合方 式，初步形成过渡带三次采油井网部署方法。 关键字，过渡带；三次采油；聚合物；井网东北石油大学工程硕士专业学位报告 III Feasibility study of a class of three oil recovery in the transitional zone of the North Development Zone ABSTRACT The Oilfield Polymer Flooding Oil Technology in high water cut stage, the tertiary oil recovery technology faces new challenges, in Xingbei development area of pure oil a reservoir of tertiary oil recovery potential decreased year by year, three types of reservoirs in tertiary recovery test is still carried out. Transitional zone a, two with a kind of reservoir development and pure oil similar, Pu I 1 ~ 3 reservoir movable geological reserves of 1909 million tons. The water drive development adjustment and increasing difficulty. So it is necessary to carry out the transitional zone of a reservoir three times on the feasibility of production and lay a solid foundation for the continuous stable production of reserve base. This paper analyzes the major reservoirs in Xingbei development area transition zone three production feasibility, from the reservoir development, storage characteristics, determine the polymer flooding injection parameters, well spacing, well network deployment feasibility elaboration, and according to the actual economic benefits of selected optimal well distribution plan. By well seismic combination of transition with a kind of reservoir sand bodies are depicted in detail, according to the transition zone has deployed well reservoir development and production situation of, the implementation of the Pu I 1 ~ 3 oil remaining geological reserves, to predict the plane distribution of remaining oil; to carry out different polymer injection parameters of indoor drive oil experiment, and to choose the best polymer injection parameters, and to evaluate the effect of flooding. In the transition zone existing well pattern based development well network scheme, combining with the numerical simulation technology for different well spacing, well network, layer system combination development effect evaluation, and selects the optimum well pattern, well spacing and layer system combination, initially formed transitional zone of tertiary oil recovery well network deployment method. Keywords: transition zone; three oil recovery; polymer; well pattern东北石油大学工程硕士专业学位报告 1 目 录 学位报告独创性声明............................................................................................................I 学位报告使用授权声明 ........................................................................................................I 摘要 ................................................................................................................................II ABSTRACT.........................................................................................................................III 目 录 ...................................................................................................................................1 前 言 ...................................................................................................................................1 第一章 杏北开发区过渡带基本概况...................................................................................3 1.1 地质概况..................................................................................................................3 1.1.1 构造、断层特征.............................................................................................3 1.1.2 油层沉积特征.................................................................................................4 1.1.3 油层发育状况.................................................................................................5 1.1.4 油、水分布特征.............................................................................................7 1.1.5 岩性、物性与流体性质.................................................................................7 1.2 开发历程..................................................................................................................8 第二章 过渡带葡Ⅰ1～3 储层特征认识 ............................................................................10 2.1 沉积特征认识........................................................................................................10 2.2 储层物性认识........................................................................................................12 2.2.1 岩石矿物组成...............................................................................................12 2.2.2 岩石粒度组成...............................................................................................12 2.2.3 微观孔渗结构...............................................................................................14 2.3 储层“四性”关系认识.........................................................................................16 2.4 地层流体对聚驱效果的影响.................................................................................20 第三章 一、二条带内葡Ⅰ1～3 油层储量潜力分析.........................................................22 3.1 原始地质储量分布情况.........................................................................................22 3.2 油层动用状况........................................................................................................22 3.3 剩余地质储量分布情况..........................................................................................23 第四章 过渡带地区主力油层聚驱注入参数的研究..........................................................26 4.1 清水配制污水稀释人造岩心注入实验..................................................................26 4.2 清水配制清水稀释人造岩心注入实验..................................................................30 4.3 聚合物驱油效果室内评价实验 ..............................................................................32 第五章 过渡带地区三次采油井网部署的方法..................................................................36 5.1 分析合理注采井距.................................................................................................36 5.1.1 井距与控制程度关系分析 ...........................................................................36 5.1.2 井距与油层动用程度关系分析....................................................................37东北石油大学工程硕士专业学位报告 2 5.1.3 不同井距注采能力变化分析........................................................................39 5.2 三次采油井网部署.................................................................................................40 5.2.1 井网部署原则...............................................................................................40 5.2.2 布井方案设计...............................................................................................41 5.2.3 布井方案优选...............................................................................................43 结 论 ...............................................................................................................................45