【作者】 张洪军；

【导师】 朱玉双；

【作者基本信息】 西北大学 ， 地质工程， 2011， 硕士

【摘要】 本文以安塞油田长6油藏注水开发时间较长的主力开发区为研究对象,在系统研究三大地质规律及剩余油分布规律的基础上,开展了现井网适应性评价、井网调整潜力分析、研究不同储层、不同井网的合理井排距、井网密度、优化调整井网形式等,提出了一套科学、合理的安塞油田开发中后期井网调整优化技术体系。通过研究,取得了以下几方面的研究成果：1、形成了以静态识别、动态监测识别及注采动态识别相结合的裂缝研究方法,创新建立了安塞油田注采动态识别裂缝标准；2、将油藏工程、数值模拟预测、剩余油监测、动态分析四种方法有机结合,通过对综合含水、可采储量采出程度、驱油效率、波及体积、剩余储量丰度比等指标综合研究,建立了剩余油定性描述的评价标准；3、形成了综合初期单井产能对比、油田递减率、含水上升率,井间干扰程度、数值模拟预测结果等指标的井网适应性综合评价方法；4、采用油藏工程、油藏数值模拟及类比法等方法优选各区块合理的井网调整方式；5、通过综合评价与对比,得出安塞油田目前的井网调整潜力,可部署加密井2102口,建产能169.1万吨,同时首批配套需转注63口老井。本文的研究成果可用于安塞油田合理井、排距的确定,为加密井部署及井网调整优化技术提供理论指导,对实现安塞油田高效开发具有重要意义,同时也为同类油藏提供借鉴。更多还原

【Abstract】 This paper focuses on the blocks which has been in water flooding for a long time in Ansai Oilfield. On the basis of analyzing three geological regular patterns and remained oil distribution pattern, this paper discusses the well pattern evaluation, well pattern adjustment potential analysis and optimizing of well pattern and well spacing in different kinds of reservoirs. Finally, a scientific system of well pattern adjustment method was established.Through research of this project, some innovative outcomes are obtained as follows:1. Through core experiments and coring data, observation on the change of microcosmic penetrating pattern is analyzed, combined with relative permeability curve, injection and production and dynamic monitoring, the permeating pattern of the oil field is obtained; 2. With the combination of reservoir engineering, reservoir simulation prediction, remained oil distribution and dynamic analysis, remained oil distribution is analyzed.3. An integrated well pattern evaluation approach is established with the analysis of initial well production, production decrease rate, water cut increase, inter-well inference and reservoir simulation, in order to evaluate the effectiveness of well pattern adjustment; 4. Well pattern adjustment is optimized with the approaches of reservoir engineering, reservoir simulation and other similar methods.5. Through integrated evaluation and contrast, the potential of Ansai oilfield is 2102 infill wells, production of 1.691 million tons, and the conversion of 63 production wells to injection wells.The result of this project can be employed in determining the suitable well spacing, deploying infill wells and guiding the well pattern optimizing, therefore is serviceable in the effective development of Ansai Oilfied, and can provide reference for oilfields of similar characteristics.更多还原