喇嘛甸中块层系井网调整技术经济界限  

Technical and economic boundaries on formation and well pattern adjustment in Lazhong block

作　　者：吴家文[1] 左松林[1] 赵秀娟[1] 费建平 刘洪涛[3] 王起超 

机构地区：[1]中国石油大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712 [2]中国石油大庆油田有限责任公司大庆钻探工程公司,黑龙江大庆163413 [3]中国石油大庆油田有限责任公司第二采油厂,黑龙江大庆163414 [4]中国石油大庆油田有限责任公司测试技术服务分公司,黑龙江大庆163511

出　　处：《油气地质与采收率》2015年第5期113-116,共4页Petroleum Geology and Recovery Efficiency

基　　金：国家自然科学基金项目"低渗透油藏提高驱油效率的机理研究"(50634020)

摘　　要：为了确定层系井网调整的技术经济界限,以动态分析、理论计算、数值模拟和经济评价相结合的方法,研究了喇嘛甸中块层系井网调整的井距、纵向渗透率变异系数、层系组合厚度和层系组合跨度等参数的技术经济界限。其中,通过动态分析方法研究在现井网条件下逐步加密时水驱控制程度的变化规律;应用数值模拟技术研究井距与采收率关系,综合确定合理井距;在合理井距研究的基础上,通过概念模型确定渗透率变异系数界限;运用经济评价方法,依据盈亏平衡原理,计算合理井距、不同油价下的合理层系组合厚度;基于井距和层系组合厚度界限,通过理论计算,确定合理层系组合跨度;通过数值模拟和经济评价方法确定井网调整后的界限。结果表明,当喇嘛甸中块合理井距为150 m时,合理层系组合厚度为7.5 m,合理层系组合跨度为50 m,合理纵向渗透率变异系数为0.7。In order to determine the technical and economic boundaries of well pattern adjustment,technical and economic boundaries of well spacing,longitudinal permeability variation coefficient,and thickness and span of layer series combination were studied through dynamic analysis,theoretical calculation,numerical simulation and economic evaluation. The variation waterflood controlling level with well spacing was studied through dynamic analysis. Relationship between recovery efficiency and well spacing was studied using numerical simulation to determine rational well spacing. Limit of permeability variation coefficient was obtained by conceptual model. Rational combination thickness of layer series with different well spacings and oil prices was calculated based on profit and loss balance principle using economic evaluation method.Combination series span was determined through theoretical calculation based on well spacing and combination thickness of layer series. Initial oil rate and water cut after adjustment was calculated using numerical simulation and economic evaluation. Reasonable well spacing of Lazhong block is 150 m,and reasonable combination thickness is 7.5 m. The combination span is 50 m,and the longitudinal permeability variation coefficient is 0.7.

关 键 词：层系组合厚度 经济界限 合理井距 层系组合跨度 纵向渗透率变异系数 

分 类 号：TE313.5[石油与天然气工程—油气田开发工程]