基于测录井资料的储层流体类型评价方法研究  

Study on evaluation method of reservoir fluid types based on logging data

作　　者：刘土亮 胡向阳 袁伟 吴健 杨冬 LIU Tuliang;HU Xiangyang;YUAN Wei;WU Jian;YANG Dong(Zhanjiang Branch,CNOOC China Limited,Zhanjiang,Guangdong 524057,China;Hainan Branch,CNOOC China Limited,Haikou,Hainan 570300,China)

机构地区：[1]中海石油(中国)有限公司湛江分公司 [2]中海石油(中国)有限公司海南分公司

出　　处：《录井工程》2023年第3期55-62,共8页Mud Logging Engineering

基　　金：“十三五”国家科技重大专项“南海西部海域低渗油藏勘探开发关键技术”(编号:2016ZX05024-006)。

摘　　要：北部湾盆地涠西南凹陷凝析气、挥发油及常规油藏发育,流体性质复杂。由于部分井段未进行流体取样,不能准确确定储层流体性质及气油比,严重影响了油田的挖潜增产。基于油田实际生产资料,探讨分析了不同流体类型的测录井响应特征,以生产测试气油比与轻烃组分雷达图面积的关系作为约束,结合天然气测井响应方程和最优化理论计算得出地层条件下天然气、可动油的含量及气油比,实现了准确识别储层流体性质的目的。通过与实际生产测试、取样分析、生产结果进行对比,验证了该方法定量评价流体性质的准确性,为油田后续开发方案的制定与实施提供了指导。Condensate gas,volatile oil and conventional oil reservoirs are developed in the Weixi′nan Sag,Beibuwan Basin,and the fluid properties are complex.Due to the absence of fluid sampling in some well sections,the reservoir fluid properties and gas⁃oil ratio cannot be accurately determined,which seriously affects potential tapping and production increase of the oilfield.Based on the actual production data of the oilfield,the response characteristics of well logging and mud logging for different fluid types were analyzed.Taking the relationship between the production test gas⁃oil ratio and the radar chart area of light hydrocarbon components as a constraint,combined with well logging response equation and optimization theory of natural gas,the content of natural gas and mobile oil and gas⁃oil ratio under formation conditions were calculated,and the purpose of accurately identifying reservoir fluid properties was realized.By comparing with the actual production testing,sampling analysis and production results,the accuracy of this method in quantitatively evaluating fluid properties was verified,providing guidance for working out and implementing of oilfield follow⁃up development plans.

关 键 词：流体性质 气测录井 气油比 测井响应方程 最优化理论 解释评价 

分 类 号：TE132.1[石油与天然气工程—油气勘探]