CAJ | 학술논문

鄂尔多斯盆地中南部发育有侏罗系延安组第二段和第三段陆相暗色厚层泥岩层系，矿物成分以石英、黏土为主，石英43%~56%，黏土矿物29%~33%。总有机碳(TOC)1.63%~3.89%，有机质成熟度Ro为0.59%~0.60%，含气量(CH4)0.25~0.85 m3/t，等温吸附实验表明延安组泥岩的甲烷吸附能力与总有机碳含量呈正相关关系。泥岩处于生物成因气阶段，具备页岩气形成的基本地质条件，并可对比美国密歇根盆地Antrim页岩和伊利诺斯盆地的New Albany页岩的地质条件。为查清黄陵北部侏罗系延安组页岩气的勘探潜力，通过分析勘查和化验测试资料，对其页岩气勘探潜力进一步评价认为：黄陵北部延安组泥岩分布范围和厚度较大，已进入生物成因气和热催化生气的中间阶段，有机质丰度较高，具备形成页岩气的成藏条件，页岩气潜力巨大。
악이다사분지중남부발육유주라계연안조제이단화제삼단륙상암색후층니암층계，광물성분이석영、점토위주，석영43%~56%，점토광물29%~33%。총유궤탄(TOC)1.63%~3.89%，유궤질성숙도Ro위0.59%~0.60%，함기량(CH4)0.25~0.85 m3/t，등온흡부실험표명연안조니암적갑완흡부능력여총유궤탄함량정정상관관계。니암처우생물성인기계단，구비혈암기형성적기본지질조건，병가대비미국밀헐근분지Antrim혈암화이리낙사분지적New Albany혈암적지질조건。위사청황릉북부주라계연안조혈암기적감탐잠력，통과분석감사화화험측시자료，대기혈암기감탐잠력진일보평개인위：황릉북부연안조니암분포범위화후도교대，이진입생물성인기화열최화생기적중간계단，유궤질봉도교고，구비형성혈암기적성장조건，혈암기잠력거대。
Ordos basin is one of the important energy resource basins in China. The second and third members of Jurassic Yan'an Formation in northern Huangling mining area of the south-central Ordos basin contain a thick succession of continental dark mudstone. The minerals of the mudstone are dominated by quartz and clay minerals, with quartz content 43%~56%, clay content ranging 29%~33%. The total organic carbon (TOC) content of the mudstone is 1.63%~3.89%, the organic maturity is characterized byRo of 0.59%~0.60%, and gas (CH4) content is 0.25~0.85 m3/t. The isothermal adsorption test showed that gas adsorption capacity of the mudstones in Yan'an Formation had a positive correlation with TOC. The gas is biogenic and possessed the basic geological conditions of shale gas formation. The characteristics of the mudstone can be compared with New Albany Shale in Michigan basin and Antrim Shale in Illinois basin of America. In order to assess the shale gas resource potential of Yan'an Formation in northern Huangling mining area, the exploration data and laboratory experiment data were analyzed. A preliminary assessment of gas resources demonstrated that the mudstone in Yan'an Formation in northern Huangling mining area has broad distribution and big thickness, and is characterized by high TOC content and high gas production potential. On the whole, the shale gas potential is very good.