摘要
以采用多油层合注合采方式开发的葡北油田葡Ⅰ油组油藏为例,开展定量判识窜流通道发育区的方法研究。从油藏地质和开发动态的角度优选能有效表征窜流通道特征的7类参数,通过变换进一步求取井组综合变异系数、无因次累积注水强度、无因次吸水强度和井组内部累积水油比级差4个关键参数,最后通过构造综合判别参数与4个关键参数之间的定量关系式实现综合判别参数的求取。研究表明,葡北油田综合判别参数大于0.38的区域为窜流通道发育区,被窜流通道沟通的注水井和采油井分别具有低注水压力和高注水量及高采液量和特高含水率的典型特征。
Taking Pu Ⅰ formation of Pubei Oilfield as a case, a kind of quantitative method based on the data of geologic characteristics and waterflood development performance was put forward to identify the channeling path growing area of reservoirs under the condition of using commingled injection and production. According to optimization, seven types of parameters were used to characterize the channeling paths, and by the transformation and the computation about these parameters, four types of key parameters including comprehensive variation coefficient, dimensionless rate of cumulative water injection, dimensionless rate of water injection and water oil ratio of well group were acquired. Further, the integrated discrimination exponent was computed by the equation established from the exponent and the key parameters. The results show that in Pubei Oilfield, channeling paths are formed where the integrated discrimination exponent of well group is greater than 0.38. Among the wells connected by channeling paths, the water injectors are characterized by low injection pressure and high water injection rate, and the producers are characterized by high liquid producing capacity and extra water cut.
出处
《中国石油大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2009年第2期23-28,共6页
Journal of China University of Petroleum(Edition of Natural Science)
基金
国家科技重大专题项目(2008ZX05009-003)
中国石油大庆油田有限责任公司科研项目(0507003-2007-JS-6478)
关键词
合注合采
窜流通道
综合判别参数
葡北油田
commingled injection and production
channeling paths
integrated discrimination exponent
Pubei Oilfield
