加强天然气地学研究 勘探更多大气田

ENHANCE THE STUDIES ON NATURAL GAS GEOLOGY AND FIND MORE LARGE GAS FIELDS IN CHINA

当前 ,中国天然气勘探的目标不应再是大中型气田 ,而应是大气田。加强大气田形成主控因素的定量和半定量地学研究 ,特别是划定生气强度大于 2 0× 1 0 8m3/km2 区块的研究是发现大气田的重要方法。成气为主成油为辅是煤系成烃的基本规律。我国天然气资源研究应从地质资源量评价转为可采资源量预测。最近评价认为 ,我国天然气可采资源量约为 1 1 .44× 1 0 12 m3～ 1 3 .3 2× 1 0 12m3,可见天然气勘探潜力大。加强天然气高效富集区的研究 ,对促进天然气工业发展意义重大。

At present, the purpose of natural gas exploration in China is no longer to find the medium\|large gas fields, but large gas fields. Enhancing the quantitative or semi\|quantitative studies on the main factors of controlling the formation of the large gas fields, especially defining the area with gas generating strength more than 20×10\+8 m\+3/km\+2 is an important method of finding large gas fields. The fact that coal generates more gas and less oil is the basic rule. The study on natural gas resource studies in China should change form geological resource evaluation to recoverable resource prediction. China has a recoverable resource of natural gas 11.44×10\+\{12\} m\+3 to 13.32×10\+\{12\} m\+3. The natural gas exploration has much potential. Strengthening the study on high potential gas\|rich area is significant for Chinese natural gas industry. The natural gas geochemistry study should combine with the natural gas geology.