Journal of Petroleum & Environmental Biotechnology

Tubular mechanics in oil-gas wells and its applications

World Congress on Petroleum and Refinery

July 21-22, 2016 Brisbane, Australia

Zifeng Li

Yanshan University, China

Posters & Accepted Abstracts: J Pet Environ Biotechnol

Abstract:

A large number of string materials, such as the drill string, pumping rod, tubing, coiled tubing, casing, etc., are used and often failure in oil and gas drilling and production. How to use them best? This presentation introduces the well trajectory, the motion, the load and the failure of these strings in oil and gas wells first; then establishes the three principles of the tubular string mechanics: Equilibrium, minimum potential energy and minimum power dissipation rate; after that establishes the fundamental equations for dynamic analysis of these strings in oil and gas wells. The fundamental equations have successfully unified all the differential equations used in dynamic analysis of these strings in oil and gas wells. Thus, these equations have broad uses in drilling and production. After that, this presentation introduces static buckling of these strings in oil and gas wells, tension-torque model of these strings and its applications, mechanical analysis of tubing string in well testing operation and fracturing operation, vibrations of drill string, dynamic analysis of sucker-rod pumping systems in directional wells, mechanical analysis of bottom hole assembly and well trajectory control, mechanical analysis of tubing and casing in thermal recovery wells, cementing techniques with pre-expansion of casing to prevent casing from failure in thermal recovery wells and mechanical analysis of expandable slotted-liners. This presentation�??s results can also be used in (1) vascular interventional medicin; (2) micro/nano systems.

Biography :

Email: zfli@ysu.edu.cn