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- W2366237393 abstract "During the reverse circulation gas drilling,the heat is exchanged between the wellbore fluid and the formation,so the well temperature distribution is one of the most important influencing factors in fluid-dynamic parameters of reverse circulation gas drilling.Based on characteristics of reverse circulation drilling,considering the heat exchange occurred between the wellbore fluid and the formation,the heat transfer equilibrium differential element is taken as the research object along the radial drilling.The heat equilibrium equations of the central passage fluid and the annulus fluid are established.Furthermore,through solving the non-homogeneous linear equations,the non-linear temperature model of reverse circulation gas drilling is derived,meanwhile boundary conditions for solving the model are given.The results show that the well temperature using formation temperature is 21.14 K higher than the central passage temperature obtained from the model.It is mainly because with the increasing well depth,the heat is passed from the formation to the gas,and the heat transfer is incomplete.Therefore,the non-linear temperature model of reverse circulation gas drilling that considering the heat exchange occurred between the wellbore fluid and the formation is suitable for the well temperature distribution." @default.
- W2366237393 created "2016-06-24" @default.
- W2366237393 creator A5088721878 @default.
- W2366237393 date "2011-01-01" @default.
- W2366237393 modified "2023-09-23" @default.
- W2366237393 title "Non-Linear Temperature Model of Reverse Circulation Gas Drilling" @default.
- W2366237393 hasPublicationYear "2011" @default.
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