The integrated method to select drilling muds for abnormally high pressure formations

All-Russian Scientific Conference with International Participation on Contemporary Issues of Hydrogeology, Engineering Geology and Hydrogeoecology in Eurasia

Khorev, V.S.^1 ; Dmitriev, A.Yu.^1 ; Boyko, I.A.^1 ; Kayumova, N.S.^1 ; Rakhimov, T.R.^1

National Research Tomsk Polytechnic University, Tomsk, Russia^1

关键词: Acid fracturing;    Cement slurry;    Fluid property;    Formation damage;    High-pressure formations;    Integrated method;    Technological parameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/33/1/012039/pdf
DOI  :  10.1088/1755-1315/33/1/012039

来源: IOP

【 摘 要 】

The article describes the method for choosing a drilling mud for drilling abnormally high pressure formations. A carefully selected drilling mud formulation would not only enhance an array of interrelated fluid properties, but also minimize the impact on the pay zones when the drill bit first penetrates the pay. To ensure a better assessment of drilling mud impact on the pay zone, it is reasonable to carry out the study focused on the analysis of technological parameters, involving filtration, acid and drilling mud tests, as well as formation damage analysis. This would enable evaluating the degree of mudding off, reservoirs acid fracturing effect and the risks of pipe sticking at significant depth. The article presents the results of the above-described study with regard to the currently used drilling mud and new experimental formulations developed at National Research Tomsk Polytechnic University (Drilling Mud and Cement Slurry Laboratory).