摘要
针对目前钻井液地面降温设备存在的过流通道狭窄、易腐蚀、换热效率低等问题,通过计算换热量及换热系数等,确定了热管参数和数量,设计并开发了一套钻井液地面降温系统,建立了一套井筒瞬态温度场数值模型,进行了模拟样机试制及冷却试验,并在顺北X井完成首次应用。应用结果表明:该系统可将钻井液循环入井温度降低30℃左右,井底循环温度降低5~8℃,可有效缓解井下仪器高温下失效问题;建立的井筒温度场瞬态分析数值模型可以有效地指导选井工作和分析工作;为降低经预测过高的井底循环温度,须在钻井设计时统筹考虑井身结构、钻具组合、循环排量等关键因素。所得结论可为现场选井以及应用效果分析等工作提供理论指导。
The existing drilling fluid surface cooling devices are disadvantageous for narrow flow channels,proneness to corrosion and low heat exchange efficiency.A drilling fluid cooling system was designed and developed based on heat pipes,after determining the parameters and quantity of heat pipes through calculation of the heat exchange amount and heat transfer coefficient.Moreover,the numeral simulation model of the transient temperature field of the wellbore was established,and the laboratory prototype was manufactured and tested for cooling performance.The invented system was for the first time applied in Well X of the Shunbei area.The field application shows that the wellhead inlet temperature of drilling fluids circulating from the presented system was reduced by about 30℃and the circulating bottomhole temperature was reduced by 5~8℃,which effectively mitigates the high-temperature-induced failure of downhole devices.The developed transient wellbore temperature field numerical model can effectively guide the selection of candidate wells and application performance analysis,with simulation accuracy of above 95%.This research demonstrates that to lower the supposedly excessively high circulating bottomhole temperature,the key aspects,such as the casing configuration,bottomhole assembly,and pump rate,shall be comprehensively considered during the drilling engineering design.The findings of this research provide theoretical guidance for candidate well selection and application performance analysis of drilling fluid surface cooling.
作者
梁晓阳
赵聪
赵向阳
张亚洲
白园园
杨谋
Liang Xiaoyang;Zhao Cong;Zhao Xiangyang;Zhang Yazhou;Bai Yuanyuan;Yang Mou(Sinopec Research Institute of Petroleum Engineering;Shelfoil Petroleum Equipment&Services Co.,Ltd.;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University)
出处
《石油机械》
北大核心
2023年第3期24-32,共9页
China Petroleum Machinery
基金
中国石油化工集团有限公司科技项目“钻井液降温技术研究与应用”(P20038-3)。
关键词
钻井液
地面降温
热管
井筒温度场
数值模型
drilling fluid
surface cooling
heat pipe
wellbore temperature field
numerical simulation model
作者简介
第一作者:梁晓阳,工程师,生于1990年,2016年毕业于太原科技大学机械工程专业,获硕士学位,现主要从事石油井下工具研究工作。地址:(253034)山东省德州市。电话:(0534)2670113。E-mail:liangxy.sripe@sinopec.com。
