1. Lei Qun, X., Yun, Y., et al.: Progress and development directions of stimulation techniques for ultra-deep reservoirs. Petrol. Explor. Dev. 48(01), 193–201 (2021)
2. Hongtao, L., Liu, J., Huifeng, L., et al.: Progress and development direction of production test and reservoir stimulation technologies for ulra-deep oil and gas reservoirs in Tarim Basin. Nat. Gas Ind. 40(11), 76–88 (2020)
3. Tian, Y.K., Zhou, F.J., Li, B., et al.: Preparation of high performance mortar under high temperature and high stress to simulate ultra-deep reservoir rock. In: 55th U.S. Rock Mechanics/Geomechanics Symposium (2021)
4. Yang, Z., Cai, B., Xu, Y., et al.: Effectiveness evaluation on network fracturing in ultra-deep and thick reservoirs in Kuqapiedmont. China Petrol. Explor. 25(06), 105–111 (2020)
5. Kelin, W., Bo, Z., Chao, L., et al.: Multi-packer separate layer fracturing technology for deep, high temperature and high pressure gas wells in Kuqa piedmont. Oil Drill. Prod. Technol. 43(02), 239–243 (2021)