| 酒东盆地热演化史与油气关系研究 |
| |
| 引用本文： | 任占利,刘池阳.酒东盆地热演化史与油气关系研究[J].沉积学报,2000,18(4):619-623. |
| |
| 作者姓名： | 任占利 刘池阳 |
| |
| 作者单位： | 西北大学地质系,西安 710069 |
| |
| 基金项目： | 石油天然气总公司二次资源评价项目;陕西省教委基金项目资助 |
| |
| 摘 要： | 酒东盆地是由两期不同性质、不同世代盆地叠合而成。早、中侏罗世-早白垩世为拉张盆地,第三纪以来为挤压坳陷盆地。酒东盆地现今地温梯度及大地热流值较低,分别为300℃/100m及51mW/m2。营尔凹陷中生代晚期地温梯度高于现今地温梯度,可达350～420℃/100m;新生代以来大幅沉降,地温梯度降低,烃源岩的热演化程度受现今地温场控制。盆地热演化史与油气关系研究表明营尔凹陷下白垩统赤金堡组烃源岩主生油期有两期,分别在早白垩世晚期及第三纪以来。下白垩统下沟组和中沟组烃源岩主生油期仅有一次,主要为上新世以来。营尔凹陷有良好的找油前景。
|
| 关 键 词： | 酒东盆地 营尔凹陷 地温梯度 古地温 生油期 |
| 文章编号： | 1000-0550(2000)04-0619-05 |
| 收稿时间： | 1999-09-14 |
| 修稿时间： | 1999年9月14日 |
Research on the Relations between Geothermal History and Oil-Gas Generation in Jiudong Basin |
| |
| REN Zhan,li,LIU Chi,yang,ZHANG Xiao,hui,WU Han,ning.Research on the Relations between Geothermal History and Oil-Gas Generation in Jiudong Basin[J].Acta Sedimentologica Sinica,2000,18(4):619-623. |
| |
| Authors: | REN Zhan li LIU Chi yang ZHANG Xiao hui WU Han ning |
| |
| Institution: | Department of Geology,Northwest University,Xi'an 710069 |
| |
| Abstract: | Jiudong basin is formed by the stacking of two-stage differentnature and different generation basin. It was rift basin from Early-Middle jurassic to Early Creaceous and squeezed sag basin since Cenozoic. The present geothermal gradient and heat flow of Jiudong basin is very low,of which the present geothermal gradient is 3.00 ℃/100m and the heat flow value is 51 mW/m2. In later Mesozoic, the palaeothermal gradient of Yinger depression, which reached 3.50～4.20 ℃/100m,is higher than present thermal gradient. Thermal gradient of Jiudong basin has decreased since Cenozoic, Yinger depression has subsided on a large scale. The maturity of thermal evolution of source rocks in Yinger depression is controlled by present temperature. Research on the relations between geothermal history and oil-gas generation in Yinger depression indicate that Chijinbu Formation source rock of Lower Creaceous have two stage of oil generation,i. e. Late Creaceous and since Tertiary. Xiagou Formation and Zhonggou Formation source rocks of Lower Creaceous only have one main stage of oil generation, main stage of oil generation is since Pliocene. It has good prospect for exploring oil in Yinger depression. |
| |
| Keywords: | Jiudong basin Yinger depression thermal gradient palaeotemperature stage of oil generation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《沉积学报》浏览原始摘要信息 |
| 点击此处可从《沉积学报》下载免费的PDF全文 |
|
