中国陆上盆地天然气资源潜力与勘探方向OA

Oil and gas resources serve as the foundation of the oil and gas industry and are vital to the sustained and healthy development of the national economy.Since the implementation of the"Continuously Intensifying Domestic Oil and Gas Resource Exploration and Development"initiative in 2019,domestic natural gas reserves and production have shown rapid growth.The medium-to long-term domestic natural gas consumption demand will continue to rise,making the mission of strengthening domestic self-sustained natural gas supply security both critical and urgent.Based on the progress in natural gas exploration and new geological insights since the 14th Five-Year Plan,a systematic reassessment of conventional and unconventional natural gas in-place resources in 27 onshore basins including Sichuan,Ordos,and Tarim,revealed a total of 191.90 trillion cubic meters,with a proven rate of only 12.7%,indicating a solid resource foundation for the future rapid development.The proven rate of conventional natural gas in-place resources is 16.3%,with remaining unproven resources amounting to 58.48 trillion cubic meters.The foreland and deep layers of three major cratonic basins,i.e.,Sichuan,Tarim,and Ordos in central and western China,will continue to be the key targets for future conventional natural gas exploration,with an estimated 5.0-7.0 trillion cubic meters of additional reserves potential over the next five to ten years.The remaining unproven resources of unconventional tight gas is 26.52 trillion cubic meters,with exploration efforts concentrated in the Sichuan and Ordos basins,and an estimated 1.9-2.5 trillion cubic meters of additional reserves potential over the next five to ten years.The remaining unproven resources of unconventional shale gas is 48.50 trillion cubic meters,primarily distributed in the Paleozoic Strata of the Sichuan Basin,with an estimated 2.5-3.0 trillion cubic meters of additional reserves potential.The proven rate of coalbed methane is only 3.9%,with remaining unproven resources amounting to 33.80 trillion cubic meters.Basins such as Ordos,Qinshui,Junggar,Sichuan are key targets for future coalbed methane exploration,with an estimated 4.0 trillion cubic meters of additional reserves potential.