开发中后期油藏精细描述与开发调整研究

【作者】 张光明；

【导师】 王允诚； 张昌民；

【作者基本信息】 成都理工大学 ， 油气田开发工程， 2002， 博士

【摘要】 本文针对油田开发中后期油藏精细描述和开发调整中需要解决的有关问题，以高30断块为例，以剩余油分布为核心，采取了地质、测井、地震、开发研究相结合，静态预测与动态分析相结合，油藏动态研究与数值模拟相结合的技术路线，从三维定量储层预测模型的建立、油藏数值模拟、改善注水开发效果的调整方法研究等几个方面进行了系统的研究。通过本文的研究，建立起了从三维储层定量建模到开发调整全过程的工作流程和方法体系，对于开展开发中后期油藏精细描述和开发调整的理论方法研究和实际应用具有重要的指导意义。 储层成因是开发中后期形成剩余油分布的地质基础。为此，本文首先以现代沉积学知识为指导，以高分辨率层序地层学的理论和方法为手段，通过密井网资料的详细划分与对比，结合动态和地震反演资料，识别不同成因砂体、确定单砂体的横向连通性，建立了密井网条件下的储层原型模型，并从地质成因和开发成因两个方面分析了河流相砂岩储层剩余油形成的控制因素和机理。 其次，在建立地层模型的基础上，本文选择地震反演确定性建模和储层随机建模相结合的方法，以储层地质知识库的建立为基础，建立了储层的宏观模型和三维储层预测模型，为油藏数值模拟的研究提供了可靠的定量地质模型，是油田开发过程中储层地质模型重建的有效方法和工具。与此同时，根据三维储层预测模型的建模结果，通过网格粗化处理形成所需要的油藏参数模型，并通过油藏数值模拟的研究，定性和定量地描述了剩余油的分布状况，对不同开发调整方案的开发效果进行了预测，为搞好井网调整、注采调整和增产挖潜提供了科学依据。 最后，通过对高30断块油藏开发特征的分析，对该断块油藏的生产动态进行了总体评价，得出了高含水期仍是高30断块油藏注水开发的一个重要阶段的认识。因此，改善中高含水期油田的水驱效果显得尤为重要。据此对高30断块油藏今后的开发提出了加强注水，进一步完善注采系统；进行注水井大剂量深部调剖和油井堵水；开展周期注水试验；加强油田动态监测等四项建议。对油田下一步的开发调整具有重要的指导意义。更多还原

【Abstract】 To solving the relative problems of reservoir description and development plan regulation in the maturing field, taking Gaoyang 30 fault-block oil reservoir as an example, with the residual oil distribution as center, this thesis makes an extensive study about the stochastic prediction modeling for the river facies sand-body, reservoir simulating and the regulation methods of improving water-flood efficiency adopting the methods of the combination of geology, log, seism and reservoir development research, reservoir static prediction and performance analysis, reservoir performance research and reservoir simulation. Though the study, the thesis establishes the study program and the method system from stochastic modeling to reservoir development plan regulation, which has great significance on the theoretical research and practical application of reservoir description and development regulation in the maturing field.Genesis of reservoir is the geologic setting of influencing the residual oil distribution. So, under the guidance of modem sedimentology, by means of the theory and method of high definition stratigraphie geology, this thesis discerns the single sand-body and determining the horizontal continuity of sand body in the river facies, establishes the primary model under the condition of high density wells, analyses the elements and mechanism of affecting the residual oil distribution in sandstone reservoir according to the geologic origin and development condition.Secondly, on the basis of establishing reservoir model, the thesis chooses the method of the combination of seismic inversion and stochastic modeling, which is a valid method for rebuilding the reservoir model, establishes the huge model of the reservoir and three-dimensional reservoir prediction model which provides a reliable qualitative geologic model for reservoir simulation. At the same time, according to the result of reservoir modeling, This thesis builds the reservoir parameter model by use of the upscaling, and through the study of reservoir simulation, the thesis describes the residual oil distribution qualitatively and quantitatively, and predicts the development efficiency for different development regulating plans, which provides scientific ground for flood pattern modification and flood development regulation.Finally, through analyzing the development characteristic of Gaoyang 30 fault-black oil reservoir, the thesis evaluates the production performance of this reservoir, and comes to the understanding of high water cut being an important water-flood development stage for Gaoyang 30 fault-black oil reservoir. Therefore, it is very important to improve the efficiency of water-flood development for medium-high water cut reservoir. The thesis gives 4 suggestions on development of Gaoyang 30 fault-black oil reservoir, which are enhanced water-flood development, performing water injection profile control and water shutoff in the deep location, cyclic flooding test, and reservoir performance monitoring. These conclusions above are very important and significant to reservoir development plan regulation next.更多还原