摘要：Underground gas storage plays an important component of emergency gas supply and peak shaving capabilities in winter. It plays a vital role in ensuring the security of natural gas supply. Pressure variations and frequency changes in gas storage can easily cause fatigue damage to formation rocks. The M reservoir is currently in the initial phases of development, and conducting a thorough analysis of reservoir damage deformation under various storage conditions, including storage frequency and fluid pressure fluctuations, is crucial for ensuring safe and efficient operation. In this study, uniaxial compression tests and cyclic loading mechanical experiments are conducted on sandstone samples from M gas storage in Junggar Basin. These experiments combined with the operational data of M gas storage investigate the influence of different frequencies and amplitudes by stress-strain curves and hysteresis loop. Damage variables D are introduced to quantitatively analyze the damage behavior of sandstone at different frequencies and amplitudes. The results show that the compressive strength of sandstone is affected by amplitude and frequency. On the one hand, the higher the amplitude, the lower the rock strength, the fuller the hysteretic loop. On the other hand, the lower the frequency, the lower the rock strength. From the point of view of damage variable, the increase of amplitude prolongs the development cycle of inelastic strain. The higher the amplitude, the greater the final damage. When the amplitude is constant, the increase in frequency reduces the interaction time between the stone particles and the degree of rock damage decreases. The study provides a reference for the construction and safe operation of gas storage reservoirs. Copyright 2024 ARMA, American Rock Mechanics Association.

ISSN号：9798331305086

卷、期、页：/

发表日期：2024-01-01

期刊分区（SCI为中科院分区）：无

收录情况：EI（工程索引）

发表期刊名称：58th US Rock Mechanics / Geomechanics Symposium 2024, ARMA 2024

通讯作者：张文宏,翁锦涛,马正超

第一作者：田守嶒,盛茂,王天宇

论文类型：会议论文

论文概要：张文宏,田守嶒,翁锦涛,盛茂,王天宇,马正超，Damage evolution of sandstone under cyclic loading for underground gas storage，58th US Rock Mechanics / Geomechanics Symposium 2024, ARMA 2024，2024，/

论文题目：Damage evolution of sandstone under cyclic loading for underground gas storage