Study on the Criterion and Influence of Pipeline Laying Speed on Wellbore Stability

Wellbore instability is often encountered in horizontal directional drilling projects. Not only does it seriously influence the normal progress, but it also causes huge loss of manpower, material and financial resources. In this paper, the relationship between pullback speed and wellbore stability has been systematically studied based on the project's pullback data of the China Petroleum Pipeline Bureau. Finally, a fluid-solid coupling simulation analysis was made by use of the ABAQUS finite element software. By analyzing the several key factors of the impacts of pullback speed and strata on wellbore stability, it is concluded that appropriate pullback speed is a basic condition for ensuring the stability of wellbore. The results have certain reference significance for construction.