Influence of Bound and Mobile Water on Gas Well Production in a Low-Permeability Sandstone Gas Reservoir

被引：0
|
作者：
Li Qi
Ye Liyou
Gai Zhaohe
Li Yong
机构：
[1] Chinese Academy of Sciences (CAS),Institute of Porous Flow & Fluid Mechanics
[2] Langfang Branch,undefined
[3] Research Institute of Petroleum Exploration & Development,undefined
[4] PetroChina,undefined
[5] Daqing Drilling Engineering Technology & Research Institute,undefined
[6] PetroChina,undefined
[7] Research Institute of Petroleum Exploration & Development in Huabei,undefined
[8] PetroChina,undefined
来源：
Chemistry and Technology of Fuels and Oils | 2017年 / 53卷
关键词：
low-permeability sandstone gas reservoir; bound water; mobile water; gas seepage; gas well production rate; production under controlled pressure;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The influence of mobile and bound water on seepage capability of a low-permeability sandstone gas reservoir was studied and formulas were derived to calculate gas well production rate using cores from Xujiahe low-permeability sandstone gas reservoir in China. It is shown that mobile water in the well exerts a stronger negative effect on gas production than bound water. If the pressure gradient is too steep, a small part of the bound water may turn into mobile water, whereupon the gas seepage efficiency falls. So, use of controlled pressure is recommended for gas production, which in the end enhances the gas recovery efficiency of the reservoir.
引用
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页码：263 / 273
页数：10
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