A Study of Stress Sensitivity on the Effective Development of Low-permeability Gas Reservoirs in the Sulige Gas Field |
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Authors: | G. Pengpeng S. Wei G. Ruimin G. Shengli Z. Guanfang |
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Affiliation: | 1. State Key Laboratory of Continental Dynamics, Northwest University, Xi’an, China;2. Institute of Shaanxi Yanchang Petroleum (Group) Co. LTD, Xi’an, Chinaycsygp@126.com;4. Institute of Shaanxi Yanchang Petroleum (Group) Co. LTD, Xi’an, China;5. Institute of Shaanxi Yanchang Petroleum (Group) Co. LTD, Xi’an, China;6. Department of Science, Air Force Engineering University, Xi’an, China |
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Abstract: | Stress sensitivity plays an important role in the development of a tight low-permeability gas reservoir. With the constant low-permeability reservoir exploitation, formation pressure drop, rock net effective coverage pressure increase, the rock pore is resulted in deformation and the seepage flow of fluid in a low-permeability reservoir no longer followed Darcy flow law. With the further exploitation of reservoirs, reservoir stress sensitivity is enhanced, so evaluation on the stress sensitivity on reservoir development was a burning question. The authors present results of those experiments that simulated the permeability changes via the net confining pressure in the lab and give the influencing factors of stress sensitivity. |
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Keywords: | crustal stress low-permeability gas reservoir permeability stress sensitivity Sulige gas field |
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