莺-琼盆地钻井温度场计算校正算法研究  

Research on Correction Algorithm of Drilling Temperature Field Calculation in Ying-Qiong Basine

作　　者：李基伟 王孝山[2] 崔强 汪珂欣 熊振宇 王宏民[2] LI Ji-wei;WANG Xiao-shan;CUI Qiang;WANG Ke-xin;XIONG Zhen-yu;WANG Hong-min(Sinopec Offshore Oil Engineering Co.,Ltd.,Shanghai 200120,China;Petroleum Engineering Technology Research Institute of Shanghai Offshore Oil and Gas Branch,China Petrochemical Co.,Ltd.,Shanghai 200120,China)

机构地区：[1]中石化海洋石油工程有限公司,上海200120 [2]中国石油化工股份有限公司上海海洋油气分公司石油工程技术研究院,上海200120

出　　处：《阀门》2024年第9期1150-1154,共5页Chinese Journal of Valve

基　　金：工信部高技术船舶科研项目计划资助“NH超高温高压海洋钻井系统关键设备技术研究”(工信部装函【2022】293号)。

摘　　要：南海莺-琼盆地是我国南海海域典型的高温型盆地,海洋钻井环空温度场计算是准确预测和控制井筒温度的核心问题,本文基于深水钻井瞬态温度场计算模型,融合NSGA-Ⅱ多目标最优化算法,构建了深水钻井环空温度场计算校正模型。通过设定三个对流换热校正系数和两个优化目标,经过多轮种群迭代,获得最优校正系数,随后利用现场某一高温井进行验证。结果表明:随着NSGA-Ⅱ种群迭代次数的增加,三个对流换热校正系数值逐渐趋于稳定,模型所计算出的井底温度与环空出口温度均趋近于测量值,表明校正算法有效。校正后的模型具有一定的泛化能力,其计算值与实测值平均误差小于5%,可用于指导深水钻井温度场预测。The Ying-Qiong Basin in the South China Sea is a typical high-temperature basin in the South China Sea.The calculation of the temperature field in the annulus of offshore drilling is the core issue to accurately predict and control the wellbore temperature.Based on the transient temperature field calculation model of deepwater drilling, this paper integrates the NSGA-II multi-objective optimization algorithm to construct a correction model for the calculation of the temperature field in the annulus of deepwater drilling.By setting three convective heat transfer correction coefficients and two optimization objectives, the optimal correction coefficient is obtained through multiple rounds of population iteration, and then verified by a high temperature well in the field.The results show that with the increase of the number of iterations of the NSGA-II population, the three convective heat transfer correction coefficients gradually tend to be stable.The bottom hole temperature and the annular outlet temperature calculated by the model are close to the measured values, indicating that the correction algorithm is effective.The corrected model has a certain generalization ability, and the average error between the calculated value and the measured value is less than 5 %,which can be used to guide the prediction of deep water drilling temperature field.

关 键 词：莺-琼盆地 钻井 温度场 校正 最优化 

分 类 号：TE21[石油与天然气工程—油气井工程]