滩海油田海南3断块剩余油分布与水驱综合治理

发布时间：2018-05-13 22:24

本文选题：海南3断块 + 油藏动态分析法　；参考：《东北石油大学》2017年硕士论文

【摘要】：滩海油田海南3断块位构造上位于辽河盆地海南—月东披覆构造带的北部,由海南1块和海南3块组成,分别位于构造的中台阶与上台阶。注水开发十多年,目前整个断块具有高递减、高动用程度的特点,开发存在问题:(1)水驱具有明显的方向性,主河道方向水淹严重;(2)平面上注采井网欠完善,纵向上油水井对应关系欠完善;(3)注水开发中后期水淹水窜严重,大部分油井水淹。采用油藏动态分析法对剩余油分布规律进行研究。利用油水井各项生产资料,以各单砂体储层、连通情况、油水井历史资料为基础,将各注水井的注入量劈分到各个单砂体,再结合井区内的油水井生产状况画出最新水淹平面图,再而分析油层平面及纵向上的剩余油水分布规律。大致可以分为5种类型:(1)断层、岩性、注入水控制型;(2)薄层单砂体控制型;(3)构造控制型;(4)井网控制不住型;(5)有注无采型。2000年注水开发后,针对不同的剩余油类型,以单砂体为对象,通过油井转注,完善注采关系,加强单砂体动用;针对由于强、弱水驱共存导致的平面及层间干扰问题,实施分层注水、配注水量调整和深部调驱试验;利用周期注水挖掘中高含水井高水淹层韵律顶部型剩余油;对于处在单一河道边部储层变差部位的井层,采取油水井压裂、酸化等改造措施,加强注水受效差型剩余油的动用。通过水驱综合治理,区块开发指标实现计划要求。综合递减下降2.2%,自然递减下降4.6%,水驱控制程度和水驱动用程度逐步增加,综合含水及含水上升率稳定。
[Abstract]:The fault block Hainan 3 in Tan Hai Oilfield is located in the northern part of the Hainan-Yuedong overlying structural belt in Liaohe Basin, which is composed of Hainan 1 block and Hainan 3 block, and is located on the middle and upper steps of the structure, respectively. For more than ten years of water injection development, the whole fault block has the characteristics of high decline and high degree of production at present. The existing problem of development is that water drive has obvious directionality, and the water flooding in the direction of the main river is serious, and the pattern of injection-production wells on the plane is not perfect. The relationship between vertical oil and water wells is not perfect. (3) in the middle and late stages of water injection development, water flooding is serious, and most oil wells are flooded. The distribution law of remaining oil was studied by reservoir dynamic analysis method. On the basis of each single sand reservoir, connectivity and historical data of oil and water wells, the injection rate of each injection well is divided into each single sand body by using the various production materials of oil and water wells. Combined with the production conditions of oil and water wells in the well area, the latest water flooding plan is drawn, and the distribution law of remaining oil and water in the plane and longitudinally of the reservoir is analyzed. It can be roughly divided into five types: 1) fault, lithology, injection water controlled type 2) thin layer single sand body control type (Xinjiao 3), well pattern control type, type 4) uncontrollable well pattern, type 1) injection without production. After water injection was developed in 2000, different types of remaining oil were considered. Taking the single sand body as the object, improving the relationship between injection and production through oil well injection, strengthening the single sand body production, and aiming at the plane and interlayer interference problems caused by the coexistence of strong and weak water flooding, the experiments of stratified water injection, adjustment of water injection distribution and deep adjustment and flooding are carried out. In this paper, the rhythmic top remaining oil of high water-cut wells in high water-cut wells is excavated by periodic water injection, and some measures such as fracturing and acidizing of oil-water wells are taken to strengthen the production of remaining oil with poor water injection efficiency for the wells in the reservoir with poor reservoir variation at the edge of a single channel. Through water drive comprehensive management, block development indicators to achieve the requirements of the plan. The comprehensive decline is 2.2 and the natural decline is 4.6. The degree of water drive control and water driving are gradually increased and the comprehensive water cut and water cut rise rate is stable.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE53

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