Stress sensitivity of formation during multi-cycle gas injection and production in an underground gas storage rebuilt from gas reservoirs

LI Jiqiang,ZHAO Guanqun,QI Zhilin,YIN Bingyi,XU Xun,FANG Feifei,YANG Shenyao,QI Guixue

Table 4 Statistics on regression analysis results of e and f.

Operation cycle	Net stress changing process	e		f
Operation cycle	Net stress changing process	Increase of net stress	Decrease of net stress	Increase of net stress	Decrease of net stress
0	1	0.167 2		0.545 4
1	2		0.063 7		0.343 2
1	3	0.091 4		0.418 8
2	4		0.063 3		0.346 3
2	5	0.076 8		0.386 3
3	6		0.064 5		0.344 5
3	7	0.072 6		0.375 9