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21世纪初叶中国天然气勘探任务将极其繁重,全国需拿到8×1012~10×1012m3天然气地质储量,并为开拓出新领域作好准备。提出从战略高度考虑勘探方向定位的原则:①资源质量定位,21世纪头10年主攻方向应是常规资源,第二个10年应加强低级别资源(煤层气,致密砂岩气,页岩气)的升级转化;②勘探程度定位,新区、新领域是我国增加天然气储量的主要方向;③资源分布定位,以西部、中部和海域为主;④大中型气田分布规律定位;⑤勘探效益定位。近年天然气勘探的三个新趋势(砂岩气田储量稳定上升,中生界和新生界增储比重增大,致密气藏开发前景看好)在今后选择勘探方向时不宜忽略。提出今后5~10年我国陆上天然气勘探继续发展的三大领域:①中、西部前陆盆地,包括6个发育中、新生代前陆盆地的地区(塔里木盆地的库车、塔西南,四川盆地西北缘,鄂尔多斯盆地西缘,准噶尔盆地南缘,柴达木盆地北缘);②三大克拉通盆地(塔里木盆地、四川盆地和鄂尔多斯盆地);③东部陆内裂谷盆地深层。21世纪初叶主攻方向是西部三盆、中部两盆和海域;松辽盆地、渤海湾盆地天然气勘探应作为找油副业予以兼顾。图2表3参10(王孝陵摘)
The task of natural gas exploration in China will be extremely heavy in the early 21st century, requiring 8 × 1012 ~ 10 × 1012m3 of natural gas reserves in the country and preparing for opening up new fields. Proposed from the strategic perspective of exploration orientation of the principle: ① resource quality positioning, the main direction of the first 10 years of the 21st century should be conventional resources, the second 10 years should strengthen the low-level resources (CBM, tight sandstone gas, shale gas) ; ② exploration orientation, new areas and new areas are the main directions for increasing natural gas reserves in China; ③ resources are mainly located in the west, middle and sea areas; ④ distribution of large and medium-sized gas fields; and ⑤ positioning of exploration benefits. In recent years, three new trends in natural gas exploration (the steady increase of sandstone gas reserves, the increase of the share of increased reserves in the Mesozoic and Cenozoic, and the prospect of tight gas reservoirs development) should not be overlooked in future exploration of exploration. Proposed three major fields for the continuous development of China’s onshore natural gas exploration in the next 5-10 years: ①The foreland basins in the middle and western regions, including the six developing Mesozoic and Cenozoic foreland basins (Kuche in the Tarim Basin, southwest of the tower, Sichuan The western margin of the basin, the western margin of the Ordos Basin, the southern margin of the Junggar Basin, and the northern margin of the Qaidam Basin); ② the three major cratonic basins (the Tarim Basin, the Sichuan Basin and the Ordos Basin); and ③ the deep intracontinental rift basins in the east. In the early 21st century, the main thrusts are the third basin in the west, the two basins in the central region and the sea area. The natural gas exploration in the Songliao Basin and Bohai Bay Basin should be taken as both a sideline for oil exploration. Figure 2 Table 3 Senate 10 (Wang Xiaoling pick)