CAJ | 학술논문

以柴达木盆地北缘野外剖面地质调查为基础，结合相关钻井、露头资料和前人研究成果，综合分析柴北缘上石炭统克鲁克组富有机质泥页岩展布、有机地球化学、矿物组成、储集空间、含气性等方面特征。结果表明，克鲁克组页岩有机质丰度高， w（TOC）为0．28％～11．93％，平均值大于2％，Ro 为0．9％～1．44％，平均为1．12％，处于有机质热演化的成熟阶段，页岩有效厚度为30～150 m，脆性矿物含量大于40％，微米—纳米级裂缝和孔隙发育，含气量为1．01～2．85 m3／t，平均为1．87 m3／t，尕丘凹陷、欧南凹陷和德令哈断陷有利于页岩气形成与富集，是克鲁克组页岩气勘探开发的有利区。
이시체목분지북연야외부면지질조사위기출，결합상관찬정、로두자료화전인연구성과，종합분석시북연상석탄통극로극조부유궤질니혈암전포、유궤지구화학、광물조성、저집공간、함기성등방면특정。결과표명，극로극조혈암유궤질봉도고， w（TOC）위0．28％～11．93％，평균치대우2％，Ro 위0．9％～1．44％，평균위1．12％，처우유궤질열연화적성숙계단，혈암유효후도위30～150 m，취성광물함량대우40％，미미—납미급렬봉화공극발육，함기량위1．01～2．85 m3／t，평균위1．87 m3／t，소구요함、구남요함화덕령합단함유리우혈암기형성여부집，시극로극조혈암기감탐개발적유리구。
Based on outcrop geological survey in the northern Qaidam Basin and integrated with other data of drillings, outcrops and previous research results, the Carboniferous Keluke Formation shale gas accumulation conditions and core area selection were investigated by delineating regional distribution of gas shale, organic geo?chemical features, mineral compositions, pore system and gas content in gas shale. Shale in the Keluke Forma?tion is rich in organic matter. The TOC value ranges from 0. 28% to 11. 93%, and is over 2% in average. The thermal maturity value (Ro) ranges from 0.9% to 1.44%, and is 1.12% in average, indicating for the mature stage of organic matter thermal evolution. The available thickness of shale in the Keluke Formation is 30-150 m. The content of brittle minerals is greater than 40%. Pore systems of micro and nano scales are well?developed. Gas content ranges from 1.01 to 2.85 m3/t, and is 1.87 m3/t in average. The Gaqiu Sag, Ounan Sag and Deling?ha Fault Depression are favorable for the generation and accumulation of shale gas, hence are the targets for shale gas exploration in the Keluke Formation.