摘要Ultra-deep formations hold abundant oil and gas resources. As the demand for oil and gas increases with economic development, more and more efforts are putting into the exploration and development of oil and gas reservoirs in deep formations around the world. In China, the exploration and development of deep oil and gas are pacing up, especially in ultra-deep formations in the Sichuan Basin, Tarim Basin and Ordos Basin. The reservoirs in these basins feature extremely large depth (over 7000 m), super high temperature (150℃-210℃), super high pressure (over 150 MPa), high acid gas content (H2S and CO2), strong heterogeneity, and multiple pressure systems, which pose a series of challenges to wellbore engineering technologies including drilling, drilling fluid, cementing, logging, and completion testing. Therefore, it is necessary to delve into core drilling and testing technologies for deep formations.
Abstract：Ultra-deep formations hold abundant oil and gas resources. As the demand for oil and gas increases with economic development, more and more efforts are putting into the exploration and development of oil and gas reservoirs in deep formations around the world. In China, the exploration and development of deep oil and gas are pacing up, especially in ultra-deep formations in the Sichuan Basin, Tarim Basin and Ordos Basin. The reservoirs in these basins feature extremely large depth (over 7000 m), super high temperature (150℃-210℃), super high pressure (over 150 MPa), high acid gas content (H2S and CO2), strong heterogeneity, and multiple pressure systems, which pose a series of challenges to wellbore engineering technologies including drilling, drilling fluid, cementing, logging, and completion testing. Therefore, it is necessary to delve into core drilling and testing technologies for deep formations.
Zhang Jinshuang, Sun Lianzhong, Niu Xinming. Wellbore Engineering Technologies for Ultra-deep Oil and Gas Exploration:Challenges and Trend[J]. 中国油气, 2017, 24(1): 23-27.
Zhang Jinshuang, Sun Lianzhong, Niu Xinming. Wellbore Engineering Technologies for Ultra-deep Oil and Gas Exploration:Challenges and Trend. China Oil & Gas, 2017, 24(1): 23-27.
Paula Jr R R, Ribeiro P R, Santos O L A. HPHT drilling-new frontiers for well safety[R]. Paper SPE/IADC was presented at the SPE/IADC Drilling Conference and Exhibition, Amsterdam, Netherlands, 17-19 March, 2009.
[2]
Jhon M, Romp A, Robert L S. Problems of ultradeep high temperature, high-pressure drilling[R]. Paper SPE84555 was presented at the SPE Annual Technical Conference and Exhibition, Denver, Colorado, USA, 5-8 October, 2003.
[3]
Shadravan A, Amani M. HPHT 101-what every engineer or geoscientist should know about high pressure high temperature wells[R]. SPE Kuwait International Petroleum Conference and Exhibition, Kuwait City, Kuwait, 10-12 December, 2012.
[4]
Wang L, Zhai W, Cai B, Lu Y, et al. 220℃ ultratemperature fluid in high pressure and high temperature reservoirs[R]. Paper OTC-26364 was presented at the Offshore Technology Conference Asia, Kuala Lumpur, Malaysia, 22-25 March, 2016.
2017, Vol. 24 
