It is believed that the principle of porosity invariance during process of tightrock elastic deformation will provide a good deal of convenience for OOIP or reserve estimation.
致密岩石弹性变形过程中的孔隙度不变性原则将给储量计算带来很大的方便。
2
Afraid that in her unclear state of mind she might fall off the rock to her death, Grant climbed on all fours up a tight, narrow path by digging into the earth with his fingers and feet until he reached Paula.
The existence of vast area of tight sand rock, low permeability of sand rock and plenteous gas supply are all favorable conditions for the formation of deep basin gas traps.