南海深水超深水常用钻井液流变参数通用预测模型  

A New Model for Predicting Rheological Parameters of Drilling Fluid Suitable for Deep and Ultra-deep Water Drilling in the South China Sea

作　　者：陈浩东 罗鸣 马传华 庞宇航 徐一龙 梁继文 孙宝江[2] 尹邦堂[2] CHEN Hao-dong;LUO Ming;MA Chuan-hua;PANG Yu-hang;XU Yi-long;LIANG Ji-wen;SUN Bao-jiang;YIN Bang-tang(CNOOC China Limited,Hainan Branch,Haikou 570300,China;China University of Petroleum(East China),Qingdao 266580,China)

机构地区：[1]中海石油(中国)有限公司海南分公司,海口570300 [2]中国石油大学(华东)石油工程学院,青岛266580

出　　处：《科学技术与工程》2025年第6期2332-2340,共9页Science Technology and Engineering

基　　金：国家自然科学基金联合基金重点项目(U21B2069);国家自然科学基金面上项目(52274020);国家重点研发计划(2022YFC2806504)。

摘　　要：钻井液的流变参数对于精准预测深水、超深水井钻井水力参数具有重要影响。开展了南海深水常用HEM钻井液(high efficient mud,HEM)和合成基钻井液在4~210℃、30~180 MPa条件下的流变实验,揭示了大温压范围内表观黏度、塑性黏度及动切力等流变参数随温压的变化规律;基于实验数据对比评价了已有9种流变模型,发现罗斯模型适用于合成基钻井液、赫巴模型适用于HEM钻井液选,在此基础上创建了一种适用于高低温、高低压交变,HEM和合成基钻井液的流变参数通用预测模型,最大误差11.95%、平均误差为0.62%,均优于已有模型;在使用HEM钻井液时计算井底压力误差为0.28%,在使用合成基钻井液时计算井底压力误差为0.181%,可满足南海深水钻井要求。The rheological parameters of drilling fluid have an important impact on accurately predicting the hydraulic parameters of deepwater and ultra-deepwater drilling wells.The rheological experiments were carried out on commonly used HEM(high efficient mud)drilling fluids and synthetic-based drilling fluids in the deep waters of the South China Sea under conditions of 4 to 210℃and 30 to 180 MPa.The variation laws of rheological parameters such as apparent viscosity,plastic viscosity,and dynamic shear stress with temperature and pressure were revealed in a wide range of temperature and pressure.Based on the experimental data,nine existing rheological models were compared and evaluated.It was found that the Ross model is suitable for synthetic-based drilling fluid,and the Herschel-Bulkley model is suitable for HEM drilling fluid.On this basis,a general predictive model for rheological parameters of HEM and synthetic-based drilling fluids was created,which is applicable to alternating high and low temperatures,high and low pressures.The maximum error of this model is 11.95%,with an average error of 0.62%,which is better than existing models.The bottom hole pressure error is 0.28%when using HEM drilling fluid and 0.181%when using synthetic drilling fluid,which can meet the requirement of deep water drilling in the South China Sea.

关 键 词：深水超深水 高低温压交变 合成基钻井液 HEM钻井液 流变模型 

分 类 号：TE52[石油与天然气工程—油气田开发工程]