The results show that the permeability is closely related with the confined stress, hydraulic pressure and matrix suction.
结果表明，油田白垩的渗透性与其所承受的应力、渗压梯度和基质吸力都有着密切的联系。
2
The extremely low permeability of Chang8 reservoir in Xifeng Oilfield makes hydraulic fracturing both an important treatment and development method for the oilfield.
西峰油田长8储层低渗特低渗的地质特征决定了水力压裂不仅是重要的增产措施，而且是重要的开发手段。
3
The testing research about enhancing permeability rate by hydraulic cutting seam on outsize coal sample is introduced.