And the variation law of the hole collapse pressure of extended reach well along with hole Angle and azimuth mostly decided by the status of the stratigraphic in-situ stress.
大位移井井壁坍塌压力随井斜角与井斜方位角的变化规律主要由地层的原地应力状态决定。
The synthesis, properties, the mechanisms of collapse prevention and in-situ application of non-fluorescence NFA-25 are introduced.
介绍了NFA-25的合成方法、性能指标、防塌机理及现场应用效果。
Embossed molding the whole floor is the in-situ surface, one will be off or fade, do not collapse and fracture (such as grass-roots level is not broken).
压花地坪是现浇整体成型，表面一会剥落或退色，不塌陷及断裂(如基层不断裂)。
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