The major pay bed is low permeable ultra dense sandstone. Its permeability and pore throat texture are very sensitive to the net pressure of overlying strata.
主要产层为低渗透超致密砂岩，其渗透率和孔喉结构对上覆地层净压力很敏感。
For thin multilayer reservoirs with low permeability, it is expected to conduct fracturing in all pay zones at one time to reduce the frequency of fracturing operation.
对于低渗复杂的薄层多层油气藏，期望一次性压开所有产层以减少压裂作业的次数。
However, most of undeveloped new blocks are low-grade reservoirs with many development difficulties such as super heavy oil, low permeability, thin bed and deep pay.
而尚未开发的新区大多属于超稠油、低渗、薄层或深层等开采难度较大的低品位油藏。
The filtering flow rules and water-oil displacement characteristics in deep pay and low-permeability reservoirs has some specialities.
深层低渗透率油藏的渗流规律及水驱油特性具有特殊性。
Petroleum researchers both at home and abroad always pay much attention to the development of low permeability oil reservoir.
如何搞好低渗透油藏的开发，一直被国内外石油工作者所关注。
Petroleum researchers both at home and abroad always pay much attention to the development of low permeability oil reservoir.
如何搞好低渗透油藏的开发，一直被国内外石油工作者所关注。
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