| 二连盆地白音查干凹陷热演化史与油气 |
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| 引用本文： | 王立志,华学理,王佑宁,李秀珍,葛元霞.二连盆地白音查干凹陷热演化史与油气[J].石油学报,2002,23(Z1):24-28. |
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| 作者姓名： | 王立志 华学理 王佑宁 李秀珍 葛元霞 |
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| 作者单位： | 1. 中国地质大学能源地质系 北京100083;2. 中原油田分公司 河南濮阳457001;3. 西南石油学院 四川南充637001;4. 中原石油勘探局 河南濮阳457001 |
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| 摘 要： | 利用大量分析数据和实测资料对二连盆地白音查干凹陷的今地温特征、烃源岩热演化史进行了深人细致的剖析,恢复了中生代早白坚世的古地温梯度和古剥蚀厚度.地热史研究表明,今地温梯度为3.13℃/100m,而古地温梯度为5.5℃/100m.古地温明显高于今地温.说明该凹陷在地质演化历史时期,曾经历了较大程度的抬升剥蚀过程.剥蚀厚度为920~1160m.综合古地温演化史和烃源岩热演化史等各方面的资料,该凹陷白奎系烃源岩热演化程度较高,成烃门限深度为600~1000m,生烃高峰埋深为1200~2000m.结合埋藏史资料,确定该凹陷主成烃期在早白至世都三段一赛汉塔拉组沉积期.
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| 关 键 词： | 二连盆地 白音查干凹陷 地温 热演化 油气 |
| 收稿时间： | 2002-04-22 |
| 修稿时间： | 2002-07-10 |
THERMAL EVOLUTION HISTORY AND HYDROCARBON OF BAIYINCHAOAN DEPRESSION IN ERLIAN BASIN |
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| WANG Li-zhi.THERMAL EVOLUTION HISTORY AND HYDROCARBON OF BAIYINCHAOAN DEPRESSION IN ERLIAN BASIN[J].Acta Petrolei Sinica,2002,23(Z1):24-28. |
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| Authors: | WANG Li-zhi |
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| Affiliation: | China University of Geosciences, Beijing 100083, China |
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| Abstract: | In this article,the characters of modern ground temperature and thernial evolution history of the hydrocarbon source rock in Fiaiyinchagan Depression are thoroughly studied with abundant data. Can this basis, the paleogeothermal gradient and the paleo-erossion thickness are resumed in early Cretaceous of Mesozoic. Conclusions on thermal history research are drawn as follows: in this depression, modern-geothermal gradient is 3.13℃/100m while paleo-one was 5.5℃/100m. Ancient ground temperature was evidently higher than modern ground temperature, which showed that the great erosion event happened in the geological history. Erosion thickness is 920~1160m. The threshold depth of oil generation is 600~1000m, and the burial depth of oil generation peak is 1200~2000m. "hhus, hydrocarhon in the depression were mainly formed in the sedimentary period of Du-3 Member-Saihantala Formation in Early Cretaceous. |
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| Keywords: | Baiyinchagan Depression ground-temperature thermal evolution hydrocarbon |
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