.... First, the lithology varies frequently in longitudinal section and the weak argillutite alternate layers rate more than 50% thickness of the whole profile, which leads to mechanic instability problem. Next, drilling open of abnormal high pressure gas layers leads to second wellbore stress distribution...

... Abstract Referring to the casing perforated wells and based on linear-elastic theory, the stress around borehole and perforations of deviated well is analyzed and the influence of stress distribution around borehole and perforations is also fully considered. In the paper, the conception of two...

... surface stress distribution horizontal principal stress reservoir characterization shear stress upstream oil & gas inner surface Introduction Cementing is an important procedure for establishing an oil(gas) well. The ultimate purpose is to provide effective zonal isolation...

... life is extended. Then after, the process is taken a test study, smallscale industrial test and large-scale extended application and finally reach a breakthrough. P. 111 upstream oil & gas enhanced recovery stress distribution deformation compression stress field valve box compression...

... inclination angle. reservoir geomechanics pore pressure wellbore integrity spe 22381 mud weight plastic flow deformation criterion pore fluid stress component stability solid skeleton biot stress distribution wellbore design hole surface borehole pressure equation failure criterion...