摘要
针对深水钻井环境温度低、安全密度窗口窄、大尺度隔水管内携岩困难等特点,提出了深水钻井水力参数计算方法,可对深水钻井液密度、流变性、钻井携岩排量、循环压耗和当量循环密度进行计算;针对深水钻井钻头进尺长、钻速要求高的特点,在常规水力参数设计理论基础上,考虑钻头进尺对水力参数的影响,建立了实现优选目标在钻头进尺上最大化的水力参数优选模型,给出了深水钻井水力参数优选流程及求解方法。算例分析表明,与传统Drillbench方法相比,本文提出的考虑钻头进尺影响的水力参数优选方法更适合海洋钻井水力参数设计的需要。
Because of the low ambient temperature, narrow safety density window and poor cuttings car- rying capacity in deep water drilling, a method was established to calculate deep water drilling hydraulic parameters including the drilling fluid density, rheology, flow rate, circulating pressure loss and equiva- lent circulating density. In view of the great footage usage and high ROP demand, and based on the tra- ditional Drillbench theory, a new hydraulic parameter optimization design model was developed which can maximizes the average value of drilling footage. The optimization procedure and solving method were given. Calculation results show that compared to the traditional method of Drillbench, this parameter optimization model considering the effect of drilling footage is more suitable for the design of offshore drilling programs.
出处
《中国海上油气》
CAS
CSCD
北大核心
2015年第3期126-132,共7页
China Offshore Oil and Gas
基金
"十二五"国家科技重大专项子课题"深水钻井水力学及井控关键技术(编号:2011ZX05026-001-02)"
国家自然基金"深水钻井水合物储层-井筒耦合传热传质特性研究(编号:51374232)"
中央高校基本科研业务费专项资金资助项目"海洋油气钻探中的安全保障基础问题研究(编号:13CX05006A)"部分研究成果
关键词
深水钻井
水力参数
计算方法
优选模型
钻头进尺
deep water drilling
hydraulic parameter
calculation method
optimization model
drilling footage
