ORIGINAL RESEARCH article
Front. Earth Sci.
Sec. Economic Geology
Quantitative Evaluation Method for Reservoir Damage Caused by Stress Sensitivity in Tight Oil Reservoirs
Provisionally accepted
- 1China University of Petroleum, Beijing, Beijing, China
- 2Changqing Oilfield Company, Xi'an, China
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This study investigates the impact of stress sensitivity on the L tight sandstone reservoir in the Ordos Basin. Laboratory analyses confirm strong stress-sensitive characteristics. An exponential decline model and optimal drawdown range (6.66–7.69 MPa) were established, with a calculated stress-sensitive radius of 20.21 m. Field application showed a 11.6% reduction in permeability loss rate, 18.2% decrease in stress-induced damage, and 1.16% improvement in oil recovery after drawdown optimization.
Keywords: Production model, reservoir damage evaluation, Stress sensitivity, stress-sensitive radius, tight sandston
Received: 19 Nov 2025; Accepted: 12 Jan 2026.
Copyright: © 2026 Xue, Duan, Jiao, Li, Lei and Fan. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Yong chao Xue
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