产出剖面测井回流现象的影响因素及解释方法  

Influencing Factors and Interpretation Methods of Backflow Phenomenon in Production Profile Logging

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作  者:周道禧 Zhou Dao-xi

机构地区:[1]中海油能源发展股份有限公司工程技术分公司,天津300459

出  处:《化工设计通讯》2023年第7期45-47,共3页Chemical Engineering Design Communications

摘  要:海上油田主要以大斜度和水平生产井为主,造成在生产过程中井筒中的流体会沿着井壁出现回流,在产出剖面测井解释时表现为井口一直在产液,但是井下涡轮流量计曲线测量结果为负偏,计算的流体视速度为负值的现象,给产出剖面测井解释带来了较大困难,导致无法用常规方法得到产出剖面结果。通过对数十余井次的历史测井资料的回顾和总结,对回流现象的影响因素进行了分析总结;提出基于温度模型的产出剖面解释方法,通过实际井资料处理对比分析发现,该方法具有较好的应用效果,解决了回流问题造成的产出剖面测井解释结果误差大的难题。Offshore oil fields mainly focus on high inclination and horizontal production wells,causing fluid in the wellbore to flow back along the wellbore during the production process.When interpreting the production profile logging,it appears that the wellhead is constantly producing fluid.However,the measurement results of the downhole turbine flowmeter curve are negative,and the calculated fluid apparent velocity is negative,which brings great difficulties to the interpretation of the production profile logging,Resulting in the inability to obtain output profile results using conventional methods.By reviewing and summarizing the historical logging data of more than ten log wells,the influencing factors of reflux phenomenon were analyzed and summarized;A production profile interpretation method based on temperature model is proposed.Through comparative analysis of actual well data processing,it is found that this method has good application effects and solves the problem of large errors in production profile logging interpretation results caused by reflux problems.

关 键 词:回流 产出剖面 流体视速度 生产压差 井斜 温度模型 

分 类 号:TE151[石油与天然气工程—油气勘探]

 

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