摘要
塔里木盆地西南坳陷是盆地的主要油气探区之一。本文从沉积特征、有机质的丰度、类型、成熟度和热演化特征诸方面对该区的石炭系—下二叠统、中、下侏罗统、上白垩统—下第三系及中新统生油岩进行了评价。指出石炭系—下二叠统是一套较好的生油岩,生油潜力大,虽在大部分地区处于高成熟阶段,但在色力布亚大断裂下盘、麦盖提斜坡上倾方向却处于未成熟—低成熟阶段,应作为近期勘探的主攻方向;中、下侏罗统是一套现实的生油层,具有一定的潜力;上白垩统—下第三系属生油潜力差的生油岩,中新统属较差的生油岩—非生油岩。
The southwest depression in Tarim Basin is one of principal prospect area in it. This paper presents the sourcerock evaluation of its Carboniferous-Lower Permian, Middle-Lower Jurassic, Upper Cretaceous-Paleogene andMiocene layer by layer, with respect to sedimentary characteristics, abundance and type of organic matter, maturityand thermal alteration etc, It is recognized that the Carboniferous-Lower Permian could be a sequence of good sourcerocks with better source potentialities. In spite of reaching highly matured stage for most part of the area, there hasstill been in non-mature to low mature stages near foot wall of Selibuya fault and upward Maigaiti stope. Theseshould be as main targets for more recent prospecting, of which the Middle-Lower Jurassic be a real source rock withsome source potentialities; the Upper Cretaceous-Paleogene a source rock with poor ones; while the Miocene a morepoor source rock to non-source rock.
出处
《新疆石油地质》
CAS
CSCD
北大核心
1992年第4期339-350,共12页
Xinjiang Petroleum Geology
关键词
生油岩
石油
勘探方向
地球化学
Tarim Basin
Southwest depression
Source rock evaluation
Exploration direction
