title: Analyzing axial stress and deformation of tubular for steam injection process in deviated wells based on the varied (T, P) fields.
abstract: The axial stress and deformation of high temperature high pressure deviated gas wells are studied. A new model is multiple nonlinear equation systems by comprehensive consideration of axial load of tubular string, internal and external fluid pressure, normal pressure between the tubular and well wall, and friction and viscous friction of fluid flowing. The varied temperature and pressure fields were researched by the coupled differential equations concerning mass, momentum, and energy equations instead of traditional methods. The axial load, the normal pressure, the friction, and four deformation lengths of tubular string are got ten by means of the dimensionless iterative interpolation algorithm. The basic data of the X Well, 1300 meters deep, are used for case history calculations. The results and some useful conclusions can provide technical reliability in the process of designing well testing in oil or gas wells.
authors.affiliation: Uncertainty Decision-Making Laboratory, Sichuan University, Chengdu 610064, China ; College of Economics & Management, Sichuan Agricultural University, Chengdu 611130, China.
authors.forename: Yunqiang
authors.initials: Y
authors.lastname: Liu
authors.forename: Jiuping
authors.initials: J
authors.lastname: Xu
authors.forename: Shize
authors.initials: S
authors.lastname: Wang
authors.forename: Bin
authors.initials: B
authors.lastname: Qi