我国非常规油气资源的勘探远景

我国非常规油气资源 (主要包括稠油、沥青、深盆气和煤层气等 )非常丰富 ,初步预测其资源量在 8× 10 10 t油气当量以上。非常规油气有其自身独特的富集与分布规律。中国东部存在大量第三系重质油藏 ,南方广泛分布中、古生界沥青脉和油砂 ,西部的中、古生界重油和焦油砂则主要沿盆地北缘或西北缘展布 ,预计未发现稠油资源量约为 2 .5× 10 10 t。初步研究证实 ,我国一些大型含煤盆地都具有形成深盆气的地质条件 ,预计中部深盆气资源量可达 4× 10 13 ～ 5× 10 13 m3 。沁水盆地和冀中坳陷大城等地区的勘探试验结果表明 ,华北地区石炭 二叠纪煤系地层具非常广阔的煤层气勘探前景。目前我国非常规油气资源的勘探程度很低 ,勘探潜力巨大。

Exploratory prospects of unconventional oil-gas resources in China

China is rich in unconventional oil-gas resources (namely, heavy oil, tar-sands, deep basin gas, coal bed gas, and so forth). It is estimated that this resources size, in contrast with conventional oil resources, is over 8×1010t (oil equivalent). They are unique in their accumulation and distribution. A lot of Tertiary heavy oil reservoirs were formed in East China, Meso-Paleozoic asphalt veins and tar sands in South China, as well as Meso-Paleozoic heavy oil reservoirs and tar sands distributed at north and northwest margins of basin in West China. Approximately 2.5×1010t of heavy oil is predicted in China. Initial study shows that there are favorably geological conditions for deep-basin gas formation in some large-scale coal-bearing basins of our country. It is estimated that the resource extent of deep-basin gas in the middle part of China amounts to 4×1013-5×1013m3.The pilot exploration of coal-bed gas in Dacheng and Xinshui areas, Huabei region, indicates that there are great exploratory prospects in Carboniferous-Permian coal-bearing strata, Huabei region. At present, the proven extent of unconventional resources is quite less explored in China; so, China possesses a huge potential in unconventional oil-gas exploration.