1) Hole protection by casing
套管护孔
2) casing pipeholing casting stake
套管护壁成孔灌注桩
3) perforating casing
射孔套管
1.
FEM of sustainability for perforating casing with screw holding;
螺旋布孔射孔套管承载能力有限元分析
4) perforation casing
射孔套管
1.
The greatest stress is on the aperture of the perforation casing.
油井开发层段射孔对套管力学性能影响较大,油井开采中后期射孔套管损坏严重。
2.
In the process of oilfield production,perforation has much effects on casing mechanics performance,and serious damage of perforating casing in produced intervel is caused,thus cement hoop-casing perforation model is established and stress variation of perforation casing is analyzed.
油田生产中射孔对套管力学性能影响较大,生产层段射孔套管损坏严重。
5) perforated casing
射孔套管
1.
The perforated casing is more vulnerable than common casing under external pressure.
建立了射孔段套管弹性抗挤性能分析控制的一般方程 ,并利用摄动理论给出了射孔套管弹性抗挤能力系数的一般计算公式。
2.
The neglect of second and higher orders of small parameter ε will result in some errors when calculating the collapsing pressure of the perforated casing by using perturbation method.
采用摄动法求解射孔套管的屈曲临界压力时,一般仅取小参数ε的一次项,忽略其高阶项必然对计算结果产生一定的影响。
3.
The perforated casing is more vulnerable tocollapse under external pressure than that without per-forates.
为进一步开展射孔套管的弹塑性抗挤分析奠定了基础。
6) casing perforation
套管射孔
1.
Ideal open hole completion and casing perforation completion are derived from the update of the skin factor.
对于套管射孔完井则需要考虑射开程度的不完善和孔眼周围被压实引起的井底附加压降。
补充资料：第二孔(继发孔)型缺损
第二孔(继发孔)型缺损
ostium secondary defect
是心房间隔在形成上发生障碍，一般缺损较大，多在卵圆孔附近称第二孔(继发孔)型缺损。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条