温度测井模型分析及在致密气水平井中的应用  

Modeling analysis of temperature logging and application in tight gas horizontal well

作　　者：邸德家 DI DeJia(State Key laboratory of Shale Oil and Gas Enrichment Mechanisms and Efectire Derelopment,Beijing 100101,China;Sinopee Research Insiute of Petroleum Engineeing,Beijing 100101,China)

机构地区：[1]页岩油气富集机理与有效开发国家重点实验室,北京100101 [2]中国石化石油工程技术研究院,北京100101

出　　处：《地球物理学进展》2021年第1期144-149,共6页Progress in Geophysics

基　　金：国家重大专项“低渗透油气藏高效开发钻完井技术课题5——高压低渗油气藏固完井技术”(2016ZX05021005);中国石油化工股份有限公司科技部前瞻项目“智能标记物井下流体识别方法研究”(P20033);中国石油化工股份有限公司科技部攻关项目“页岩气井动态剖面测试技术研究”(P13147)联合资助。

摘　　要：温度和压力是水平井产出剖面测井必测的参数,然而利用温度资料进行水平井产出剖面测井解释,具有影响因素较多,多解性强的特点.本文根据热力学守恒定律,建立了温度测井计算模型,进行了压降幅度和热损失系数对温度的敏感性分析,研究了不同参数对热损失系数和温度测井的影响,为水平井温度测井资料解释奠定了理论基础.利用温度测井解释方法,对鄂北一口致密气水平井产出剖面测井资料进行了解释分析,分析了不同压裂段的产出情况,解释结果与持水率计测试结果吻合较好,说明了温度测井解释模型的可靠性.在流速等参数缺失的情况下,通过温度测井能够很好的了解水平井各压裂段的产出情况,为后续完井和生产优化提供依据.Production logging technology applied in horizontal well with multi-phase fluids face a lot of difficulties and challenges, the application of conventional and array tools in horizontal wells both have a limitation. When the structure of well completion is complicated or well diameter is too small, the array tools can’t be conveyed into the down hole, thereby it is difficult to measure the different fluid parameters, such as fluid velocity, fluid holdup and fluid density in the multi-phase fluid environment. Temperature and pressure are necessary parameters to be acquired in the procedure of production logging, and the analysis result of temperature logging is also an efficient supplement of ultimate conclusion, especially in gas well. However, the analysis method of temperature logging has the problem of strong multi-solution due to many impact factors, and lead to non-accurate interpretation results. This paper established the gas temperature analysis model for production logging according to thermodynamics conservation laws, and researched the sensitivity analysis of temperature affected by the parameters of formation pressure difference, heat loss coefficient, well completion material, reservoir heat conductivity and production time, analyzed the different parameters that impact on heat loss coefficient and temperature logging. The research results built the theoretical principle for temperature logging analysis. Production logging have been applied in one tight gas well in north of Erdos basin in China. Temperature, pressure, water holdup, CCL and GR have been acquired except fluid velocity because of sand jamming, the results have been investigated with parameters of temperature and pressure, analyzed the fluids production distribution in each fracture, pressure gradient, dynamic level of water, and water inflow position. The interpretation result had a good match with capacitance holdup data, it demonstrated that the calculation model of temperature logging was accurate and reliable. Temperature logging

关 键 词：温度测井 计算模型 水平井 致密气井 动态监测 

分 类 号：P631[天文地球—地质矿产勘探]