产量递减率与产量构成的关系建立及应用  

Establishment and application of relationship between production decline rate and production composition

作　　者：舒政[1,2] 杜晓东 姚小康 齐勇 李荣[1,2] SHU Zheng;DU Xiaodong;YAO Xiaokang;QI Yong;LI Rong(Southwest Petroleum University,Chengdu 610500,China;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Engineering,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]西南石油大学,四川成都610500 [2]西南石油大学油气藏地质及开发工程全国重点实验室,四川成都610500

出　　处：《断块油气田》2025年第2期277-282,共6页Fault-Block Oil & Gas Field

摘　　要：在油田不同的开发阶段,老井、措施井及新井产量变化显著,对产量递减率的影响也不同。为明确递减率随着产量构成的变化规律,根据递减率和产量构成的定义,分别建立了总递减率、自然递减率和综合递减率与产量构成的关系,并引入产量构成对递减率的贡献率,确定了在不同含水率开发阶段产量构成对总递减率、自然递减率和综合递减率的影响程度,并在某特高含水期油田进行了应用。结果表明:老井产量对递减率的贡献率起主导作用,措施井和新井产量大幅变化导致递减率的剧烈波动;随着措施井和新井产量占比降低幅度的减小与其产量占比升高幅度的增大,总递减率、自然递减率和综合递减率降低,该油田措施井和新井产量占比的减小和增加范围应分别控制在1.25%和8.94%左右。增大措施井和新井的投入,并控制措施井和新井产量本身的递减,是降低递减率的有效手段。研究结果为油田特高含水期控制递减率指出了方向,具有很好的实用价值。In different stages of oilfield development,the production of old wells,production-enhanced wells and new wells varies significantly,affecting the decline rate differently.To clarify the law of decline rate change with production composition,relationships between total decline rate,natural decline rate and comprehensive decline rate with production composition were established respectively according to the definition of decline rate and production composition.Additionally,the contribution rate of production composition to decline rate was introduced,so as to determine the influence degree of production composition on total,natural and comprehensive decline rates during different water cut development stages,which was applied to an oilfield in ultra-high water cut stage.The results show that the production of old wells has a dominant effect on the contribution rate of decline rate,while the significant change of production of production-enhanced wells and new wells causes the violent fluctuation of decline rate.With the decrease of the decreasing rate of the production proportion of production-enhanced wells and new wells,and the increase of the increasing rate of their production proportion,the total,natural and comprehensive decline rates decrease.The range of decrease and increase of the production proportion of production-enhanced wells and new wells in this oilfield should be controlled at about 1.25%to 8.94%respectively.Increasing the input of production-enhanced wells and new wells while controlling their own decline rates is an effective method to reduce the decline rate.The research results point out the direction for controlling the decline rate of oilfield during ultra-high water cut stage and have great practical value.

关 键 词：产量递减率 产量构成 关系 特高含水期 应用 

分 类 号：TE341[石油与天然气工程—油气田开发工程]