深水高温高压井钻井液当量循环密度预测模型及应用

doi:10.3969/j.issn.1006-6535.2022.03.020

特种油气藏 ›› 2022, Vol. 29 ›› Issue (3): 138-143.DOI: 10.3969/j.issn.1006-6535.2022.03.020

深水高温高压井钻井液当量循环密度预测模型及应用

高永德¹, 董洪铎², 胡益涛³, 陈沛¹, 程乐利^4,5

1.中海石油(中国)有限公司湛江分公司,广东湛江 524057;
2.中国石油渤海钻探工程有限公司,天津 300280;
3.中法渤海地质服务有限公司湛江分公司,广东湛江 524057;
4.长江大学,湖北荆州 434023;
5.中国石油大学(北京)油气资源与探测国家重点实验室,北京 102249

收稿日期:2021-05-19 修回日期:2022-03-15 出版日期:2022-06-25 发布日期:2023-01-09
作者简介:高永德(1978—),男,高级工程师,2001年毕业于江汉石油学院应用地球物理专业,2008年毕业于长江大学地球探测与信息技术专业,获硕士学位,现主要从事地球物理测井与地质录井相关的技术研究与管理工作。
基金资助:
中海石油(中国)有限公司综合科研课题“双孔介质储层测录井综合评价技术与作业方案优化研究”(YXKY-2021-ZJ-01)

Prediction Model of Equivalent Circulating Density of Drilling Fluid in Deep HPHT Wells and Its Application

Gao Yongde¹, Dong Hongduo², Hu Yitao³, Chen Pei¹, Cheng Leli^4,5

1. CNOOC Zhanjiang Branch, Zhanjiang, Guangdong 524057, China;
2. CNPC Bohai Drilling Engineering Company Limited, Tianjin 300280, China;
3. Zhanjiang Branch, China France Bohai Geoservices Co., Ltd., Zhanjiang, Guangdong 524057, China;
4. Institute of Logging Technology and Engineering, Yangtze University, Jingzhou, Hubei 434023, China;
5. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, China

Received:2021-05-19 Revised:2022-03-15 Online:2022-06-25 Published:2023-01-09

摘要/Abstract

摘要： 深水高温高压井具有井筒温度场变化复杂、钻井液物性变化大等特点,导致钻井液当量循环密度(ECD)难以准确预测。为此,根据南海某研究区深水高温高压井钻井资料,通过PVT测量仪和旋转黏度计研究了深水水基钻井液当量静态密度、流变参数与温度、压力之间的响应特征,并根据实验数据拟合经验模型参数,同时考虑温度和压力对钻井液物性参数的影响、海底增压对井筒流场与温度场的影响,对深水高温高压井ECD计算模型进行完善。研究表明:高温高压环境对水基钻井液物性有较大影响,海底增压泵排量越高,井筒内ECD越高。利用模型对南海ST362-1d井进行实例计算,ECD模型预测值与实测值平均误差仅为0.249%。该研究结果对深水高温高压井水力参数优化设计及井筒压力控制具有一定的参考价值。

关键词: 当量循环密度, 钻井液, 深水钻井, 高温井, 高压井, 南海

Abstract: Deep HPHT wells have the characteristics of complex wellbore temperature field changes and large changes in the physical properties of drilling fluids, multiplying the difficulties in accurate prediction of the equivalent circulating density (ECD) of drilling fluid. To this end, based on the drilling data of deep HPHT wells in a study area in the South China Sea, the characteristics of response between the equivalent static density and rheological parameters of deep water-based drilling fluids and the temperature and pressure were investigated by means of PVT meter and rotary viscometer. The parameters of empirical model were fitted based on experimental data, while the ECD calculation model of deep HPHT wells was improved with consideration of the influence of temperature and pressure on the physical parameters of drilling fluid and the influence of subsea pressurization on the flow field and temperature field of wellbore. The study showed that, the physical properties of the water-based drilling fluid were greatly affected by high temperature and pressure, and the higher the displacement of the subsea booster pump, the higher the ECD in the wellbore. The model was used in the calculation of Well ST362-1d well in the South China Sea, and the average error was only 0.249% between the predicted value of ECD model and the measured value. The results of the study can serve as references for the optimal design of hydraulic parameters and wellbore pressure control in deep HPHT wells.

Key words: equivalent circulating density, drilling fluid, deepwater drilling, high-temperature well, high-pressure well, South China Sea

中图分类号:

TE254

高永德, 董洪铎, 胡益涛, 陈沛, 程乐利. 深水高温高压井钻井液当量循环密度预测模型及应用[J]. 特种油气藏, 2022, 29(3): 138-143.

Gao Yongde, Dong Hongduo, Hu Yitao, Chen Pei, Cheng Leli. Prediction Model of Equivalent Circulating Density of Drilling Fluid in Deep HPHT Wells and Its Application[J]. Special Oil & Gas Reservoirs, 2022, 29(3): 138-143.

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深水高温高压井钻井液当量循环密度预测模型及应用

Prediction Model of Equivalent Circulating Density of Drilling Fluid in Deep HPHT Wells and Its Application

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