海1块东二段二元驱开发试验方案研究
发布时间：2019-04-23 13:48
【摘要】：海1块是海外河油田主力区块之一。通过多年的注水开发,2002年已进入“双高”开发阶段,剩余油分布零散,受非均质性强、井况逐年变差的影响,在目前采出程度39.2%的情况下,依靠水驱开发手段挖掘层内层间剩余油潜力难度很大,提高采收率空间较小。化学驱驱油特点就是改善平面、纵向油层的动用状况,提高驱油效率。海1块注采井网完善,水驱控制、动用程度高,油井受效明显,各项研究均表明,该块适合化学驱。本论文首先进行了断块的精细油藏描述,作为化学驱研究的地质基础,应用各种数学和计算机手段,定性定量的描述油藏模型、外部几何形态、规模大小、油藏内部结构、储层参数变化和流体分布。然后利用建模和数模软件建立油藏地质模型和油藏工程模型,并对各种动静资料的综合分析,研究掌握油水的变化规律,对油藏的水驱开发效果进行了评价,论证了化学驱开发的物质基础和可行性。通过类比法、数值模拟等研究方法对不同井网井距条件下的化学驱开发效果进行了详细的论证,并制定层系组合原则,为化学驱部署提供依据,以达到效益最大化。最后针对性的制定了合理可行的挖潜调整方案。最终采用注采井距150m五点法面积井网布井,整体规划化学驱井组57个,部署调整井57口、侧钻井1口,预计提高采收率15.5%。本课题的研究对提高辽河老区开发效果具有积极的意义,对于今后的化学驱开发实现有效开展也具有重要的借鉴和指导价值。
[Abstract]:Hai1 Block is one of the main blocks in overseas River Oilfield. Through many years of water injection development, 2002 has entered the "double height" development stage, the remaining oil distribution is scattered, strong heterogeneity, poor well conditions year by year, in the current situation of 39.2% recovery, It is very difficult to excavate the potential of interlayer residual oil by means of water flooding, and there is little space to improve oil recovery. Chemical flooding is characterized by improving the production condition of horizontal and longitudinal reservoirs and improving the displacement efficiency. The injection-production well pattern of Hai1 block is perfect, the water drive control, the production degree is high, and the oil well is effective obviously. All the studies show that the block is suitable for chemical flooding. In this paper, the fine reservoir description of fault block is firstly carried out. As the geological basis of chemical flooding research, the reservoir model, external geometry, size and internal structure of reservoir are described qualitatively and quantitatively by using various mathematical and computer methods. Reservoir parameter variation and fluid distribution. Then the reservoir geological model and reservoir engineering model are established by using the software of modeling and numerical simulation, and the comprehensive analysis of various dynamic and dynamic data is carried out to study and grasp the variation rule of oil and water, and evaluate the development effect of water flooding in reservoir. The material basis and feasibility of chemical flooding development are demonstrated. By means of analogy method and numerical simulation, the development effect of chemical flooding under different well spacing is demonstrated in detail, and the principle of formation combination is formulated to provide the basis for the deployment of chemical flooding, so as to maximize the benefit. Finally, a reasonable and feasible adjustment plan for tapping potential is formulated. Finally, the injection-production well spacing 150 m 5-point area well pattern is adopted, 57 chemical flooding wells are planned as a whole, 57 adjustment wells are deployed, 1 sidetracking well is drilled, and the recovery rate is expected to be increased by 15.5%. The research of this subject has positive significance for improving the development effect of Liaohe old area, and also has important reference and guiding value for the effective development of chemical flooding development in the future.
【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
，
本文编号：2463522
[Abstract]:Hai1 Block is one of the main blocks in overseas River Oilfield. Through many years of water injection development, 2002 has entered the "double height" development stage, the remaining oil distribution is scattered, strong heterogeneity, poor well conditions year by year, in the current situation of 39.2% recovery, It is very difficult to excavate the potential of interlayer residual oil by means of water flooding, and there is little space to improve oil recovery. Chemical flooding is characterized by improving the production condition of horizontal and longitudinal reservoirs and improving the displacement efficiency. The injection-production well pattern of Hai1 block is perfect, the water drive control, the production degree is high, and the oil well is effective obviously. All the studies show that the block is suitable for chemical flooding. In this paper, the fine reservoir description of fault block is firstly carried out. As the geological basis of chemical flooding research, the reservoir model, external geometry, size and internal structure of reservoir are described qualitatively and quantitatively by using various mathematical and computer methods. Reservoir parameter variation and fluid distribution. Then the reservoir geological model and reservoir engineering model are established by using the software of modeling and numerical simulation, and the comprehensive analysis of various dynamic and dynamic data is carried out to study and grasp the variation rule of oil and water, and evaluate the development effect of water flooding in reservoir. The material basis and feasibility of chemical flooding development are demonstrated. By means of analogy method and numerical simulation, the development effect of chemical flooding under different well spacing is demonstrated in detail, and the principle of formation combination is formulated to provide the basis for the deployment of chemical flooding, so as to maximize the benefit. Finally, a reasonable and feasible adjustment plan for tapping potential is formulated. Finally, the injection-production well spacing 150 m 5-point area well pattern is adopted, 57 chemical flooding wells are planned as a whole, 57 adjustment wells are deployed, 1 sidetracking well is drilled, and the recovery rate is expected to be increased by 15.5%. The research of this subject has positive significance for improving the development effect of Liaohe old area, and also has important reference and guiding value for the effective development of chemical flooding development in the future.
【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
，
本文编号：2463522
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