Development and testing of a mathematical model of the permafrost thawing processes during drilling of wells

International science and technology conference "Earth science"

Lukyanov, V.V.^1 ; Zhigarev, V.A.^1 ; Neverov, A.L.^1

Siberian Federal University, 79 Svobodny pr., Krasnoyarsk

660041, Russia^1

关键词: Development and testing;    Drilling fluid circulation;    Heat exchange;    Permafrost thawing;    Permafrost thaws;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/272/2/022212/pdf
DOI  :  10.1088/1755-1315/272/2/022212

来源: IOP

【 摘 要 】

A mathematical model conjugate heat exchange of the well consideration phase transitions and drilling fluid circulation during to drilling was developed. The method was tested on the experimental data. Good agreement with the experiment was shown. The calculation of the permafrost thaw around the well during drilling was carried out. Dependences of the thaw radius on the flow rate and properties of the drilling mud were obtained.