凝析气藏产出剖面测井流量计算及出水层位识别——以东海某作业区凝析气藏为例  

Flow Calculation of Production Profile Logging and Identification of Water Production Horizon for Condensate Gas Reservoirs——Taking the Condensate Gas Reservoir in an Operating Area of East China Sea as an Example

作　　者：刘建新 付焱鑫 胡文亮 马焕英[2] 侯振永[2] 杨志华[2] 武林芳 Liu Jianxin;Fu Yanxin;Hu Wenliang;Ma Huanying;Hou Zhenyong;Yang Zhihua;Wu Linfang(Shanghai Branch of CNOOC Ltd.,Shanghai 200335;China Oilfield Services Limited,Sanhe 065201,Hebei)

机构地区：[1]中海石油(中国)有限公司上海分公司,上海200335 [2]中海油田服务股份有限公司,河北三河065201

出　　处：《长江大学学报（自然科学版）》2020年第6期9-13,M0002,共6页Journal of Yangtze University(Natural Science Edition)

基　　金：国家科技重大专项“低渗致密气层测井识别及综合评价技术”(2016ZX05027-002-002)。

摘　　要：东海某作业区凝析气藏产出剖面测井存在套管气量计算偏大和出水层位确定难等问题。在深入分析气体流量计算模型的基础上,采用理论和实际测量曲线相结合的井下刻度方法,提出了速度剖面系数(Cv)校正方法,提高了气体流量的计算精度。利用常规产出剖面测井曲线,建立了3种出水层位识别方法——伽马曲线对比分析方法、气水比与温度变化量关系方法和温度变化分析方法,精准确定了出水层位深度。上述方法提高了研究区凝析气藏产出剖面的测井解释精度,为凝析气藏开发调整措施提供了可靠依据。The production profile logging of the condensate gas reservoir in an operating area of the East China Sea has some problems,such as the calculation of casing gas quantity is too large and the determination of water production horizon is difficult.Based on the in-depth analysis of the gas flow calculation model and the downhole calibration method combining the theoretical and practical measurement curves,the correction method of velocity profile coefficient(C v)was proposed to improve the calculation accuracy of gas flow.Three kinds of identification methods of water production horizon were established by using the conventional production profile logging to accurately determine the water production horizon,namely,gamma curve comparison analysis method,relationship method of gas-water ratio and temperature variation,and temperature change analysis method.The above methods have improved the interpretation accuracy of the production profile logging of the condensate gas reservoir in the study area and provided a reliable basis for the development and adjustment measures of condensate gas reservoirs.

关 键 词：凝析气藏 产出剖面测井 气体流量计算 出水层位 井下刻度方法 速度剖面系数 

分 类 号：P631.84[天文地球—地质矿产勘探]