在高能气体压裂工况下井下射孔套管承载能力的有限元分析

目前国内现有的高能气体压裂技术，在1000米以上的浅地层内，能有效地将砂岩地层压裂，提高油气产量．但对于1500米以下的深地层，却不能有效地造缝，其主要原因是对套管的承压能力不明，担心提高压力会将井壁炸塌．为此，本文利用有限元法，确定了1500米井下，在不损坏套管情况下，高能气体的极限压力。

The Fem Analysis of the Bearng Ability of the well casing Under the Condition of Rock Being Broken up by High Energy Gas

The existing high energy gas frauring technology can efficiently break up arenaceous rock above 1000 meters,and raise the yields of the oil and gas. Bat it can not efficiently bresk up the carbonate rock under 1500 meters. the main reason lies in the unknown besting ability of the well casing,and the worry that wells woul collapse as the pressure rises. In this paper,FEM is used to d fine the limit pressure under 1500 meters,under which the well casing would not break.