Torque Reduction while Drilling With Casing

International science and technology conference "Earth science"

Khuzina, L.B.^1 ; Fazlieva, R.I.^1 ; Gimaztdinova, E.A.^1

Almetyevsk State Oil Institute, Lenin street 2, Almetyevsk

423450, Russia^1

关键词: Casing while drillings;    Depleted reservoirs;    Effective solution;    Extended reach drilling;    Friction coefficients;    Geological setting;    Oil and gas well drilling;    Torque reduction;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/272/2/022043/pdf
DOI  :  10.1088/1755-1315/272/2/022043

来源: IOP

【 摘 要 】

Currently, we have been witnessing the increasing number of problems in drilling caused by certain challenges in drilling through depleted reservoirs, complicated geological settings, and fast-growing technology of extended reach drilling. One of the methods used to solve the problems is casing-while-drilling. The authors have been studying the difficulties occurring while using this method with a special focus on the issue of torque increase while rotating a casing string at an excessive speed. The paper presents calculations of the torque taking into account the friction coefficient. As an effective solution to reduce the torque a new centralizer has been designed in the laboratory of the Department of Oil and Gas Well Drilling of Almetyevsk State Oil Institute. While performing casing drilling operations a new centralizer with roller balls attached makes it possible for rolling friction to be replaced with sliding friction and, thus, prevent thread stripping.