Borehole Stability in High-Temperature Formations

作者: Chuanliang Yan , Jingen Deng , Baohua Yu , Wenliang Li , Zijian Chen

DOI: 10.1007/S00603-013-0496-2

关键词:

摘要: In oil and gas drilling or geothermal well drilling, the temperature difference between the drilling fluid and formation will lead to an apparent temperature change around the borehole, which will influence the stress state around the borehole and tend to cause borehole instability in high geothermal gradient formations. The thermal effect is usually not considered as a factor in most of the conventional borehole stability models. In this research, in order to solve the borehole instability in high-temperature formations, a calculation model …

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