Influence of Bound and Mobile Water on Gas Well Production in a Low-Permeability Sandstone Gas Reservoir
- Authors: Qi L.1,2, Liyou Y.1,2, Zhaohe G.3, Yong L.4
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Affiliations:
- Institute of Porous Flow & Fluid Mechanics, Chinese Academy of Sciences (CAS)
- Langfang Branch, Research Institute of Petroleum Exploration & Development, PetroChina
- Daqing Drilling Engineering Technology & Research Institute, PetroChina
- Research Institute of Petroleum Exploration & Development in Huabei, PetroChina
- Issue: Vol 53, No 2 (2017)
- Pages: 263-273
- Section: Article
- URL: https://journal-vniispk.ru/0009-3092/article/view/234934
- DOI: https://doi.org/10.1007/s10553-017-0803-9
- ID: 234934
Cite item
Abstract
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.
About the authors
Li Qi
Institute of Porous Flow & Fluid Mechanics, Chinese Academy of Sciences (CAS); Langfang Branch, Research Institute of Petroleum Exploration & Development, PetroChina
Author for correspondence.
Email: liqi0620@163.com
China, Langfang, Hebei; Langfang, Hebei
Ye Liyou
Institute of Porous Flow & Fluid Mechanics, Chinese Academy of Sciences (CAS); Langfang Branch, Research Institute of Petroleum Exploration & Development, PetroChina
Email: liqi0620@163.com
China, Langfang, Hebei; Langfang, Hebei
Gai Zhaohe
Daqing Drilling Engineering Technology & Research Institute, PetroChina
Email: liqi0620@163.com
China, Daqing, Heilongjiang
Li Yong
Research Institute of Petroleum Exploration & Development in Huabei, PetroChina
Email: liqi0620@163.com
China, Langfang, Hebei
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