TITLE:
Workover String Mechanical Model and Calculation of Slanted and Horizontal Well
AUTHORS:
Bingguo Du, Hanqiao Jiang
KEYWORDS:
Slanted Well, Horizontal Well, Workover String, Mechanics Model, Torque, Accident Treatment
JOURNAL NAME:
Journal of Applied Mathematics and Physics,
Vol.3 No.5,
May
27,
2015
ABSTRACT: Force
analysis and calculation of workover string in the slanted and horizontal well are
the basis of designing and checking string strength, selecting tools and determining
operation parameters, which determine the operation safety and success of
engineering accidence treatment. In this paper, by comprehensive consideration
of wellbore structure, string assembly, string load and workover operation
conditions, the workover string mechanical model has been built under three
kinds of working states of lifting, lowering and rotating. The downhole string
mechanics has been analyzed and calculated. By field verification, the string
assembly, tool selection and operation parameter optimization can be achieved,
which can improve the safety and success rates of workover engineering accident
treatment.