The upper Paleozoic reservoir in Changqing gas-field is a low pressure and low permeability reservoir.
长庆气田上古生界气藏属低压低渗储层。
During the Upper Paleozoic in Huabei there were 3 main times of sea level eustacy which caused different deposits in research area.
华北晚古生代经历了3次大的海平面升降旋回，不同海侵事件在研究区内留下了不同的沉积纪录。
The Upper Paleozoic gas reservoirs in E' er-duosi Basin belong in the typical low-porosity and low-permeability sandstone reservoirs.
鄂尔多斯盆地上古生界气藏属于典型的低孔隙、低渗透性砂岩气藏。
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