吉林东部中、新生代盆地非常规油气资源及潜力分析

Meso-Cenozoic unconventional hydrocarbon resources in eastern Jilin and prospect of development

通过对吉林东部中、新生代区域构造、盆地地质、沉积背景的综合研究,详细阐述了吉林东部中、新生代盆地非常规油气的类型、分布及其地质特征,认为研究区非常规油气的主要类型为油页岩和煤层气,具有一定的页岩气资源潜力。油页岩主要分布在辉桦盆地、罗子沟盆地、松江盆地、延吉盆地和敦化盆地等盆地中,主要层位为下白垩统大拉子组和古近系桦甸组,主要沉积环境为半深湖--深湖环境。煤层气的分布范围较广,主要层位为早、中侏罗世地层和古近纪梅河组、珲春组,集中在珲春盆地、敦化盆地、双阳盆地等煤层较厚、埋藏较浅的盆地中。伊通盆地具有页岩气潜力。

The types, distributions and geological characteristics of the unconventional hydrocarbon in eastern Jilin were analyzed by a comprehensive study on the Mesozoic and Cenozoic regional structures, basin geological setting and sedimentary background. The main types were oil shale and the coal bed methane with shale gas potential too. Oil shales are deposited in semi-deep and deep lacustrine environments lay on Huihua-, Luozigou-, Songjiang-, Yanji- and Dunhua basins, and the main strata are the Lower of Cretaceous Dalazi Formation and Paleogene Huadian Formation. The CBM was widely distributed, and yielded mainly in Hunchun-, Dunhua- and Shuangyang basins with thick coal beds and shallow in burial depth. The strata are mainly the Lower and Middle Jurassic, and Paleogene Meihe and Hunchun formations. Yitong Basin displayed a good shale gas potential.