ANALYSIS ON STABILITY OF HORIZONTAL WELLBORE IN SHALLOW VISCOUS OIL RESERVOIR

For the viscous crude recovery,the influences of rock mechanics and stress characteristics of reservoir on drilling,completion and gas injection development are more clear.Presents the concepts of rock mechanics features and apparent elastic constant of static solid-liquid coupling was pressented in drilling and completion stage in shallow sandstoneviscous oil reservoir in Xinjiang,northwest China.This paper analyzes the thermo-plastoelastic stress of shallow inspissated pool.Based on the above analysis,this paper discusses stability of the horizontal wellbore in ultra-shallow inspissated pool in Xinjiang.