| 摘要: |
| 通过野外地质填图及样品测试数据分析，对拉布达林盆地下白垩统上库力组一段(K,1)进行地S划分及油气 地球化学特征研究，将该段岩层进一步划分为上、中、下3套岩层组合,岩层产状平缓,分布稳定,在盆地中心部位埋 深大,保存好。测试数据表明:下部岩层中的暗色细碎屑岩、油页岩和泥灰岩有机质丰度较高，干酪根类型为n -I 型,达到好烃源岩标准;有机质演化程度为未成熟~低成熟，显示出具有良好的生烃潜力;拉布达林盆地下白垩统上 库力组一段具有重要的油气勘探价值。 |
| 关键词: 拉布达林 上库力组 烃源岩 有机地球化学 |
| DOI： |
| 分类号: |
| 基金项目:国家油气专项(XQ-2004 - 07> |
|
| Spatial distribution and organic geochemistry characteristics of member 1 of Shangkuli formation in Labudalin Basin |
|
YANG De-ming, MA Rui, GAO Fu-hong, ZHU Zhan-ping, HUANG Ying-cong
|
|
(College of Earth Sciences，Jilin University ’Changchun 130061，China)
|
| Abstract: |
| The petroleum geochemistry characteristics and stratigraphic division of member 1 of Shangkuli formation of lower Cretaceous (Kj s1) were studied based on detailed field geological mapping and samples testing in Labudalin Basin. The stratum of KjS1 is gentle and its distribution is steady. The KjS1 is well-preserved and deep-buried in the center of Labudalin Basin, and can be divided into 3 strata combinations: the upper, the middle and the bottom. The samples analysis indicates that the kerogen of lower pari of KjS1 is II to M type, and the abundances of organic matter of dark micro-clastic rock,oil shale and marlite reach the standard of good hydrocarbon source rocks. The organic matter evolution remains at immature to low-mature stage, which indicates these rocks have better potential of hydrocarbon generating. The characteristics of spatial distribution and organic geochemistry indicate that K, s1 has great value of oil and gas exploration in Labudalin Basin. |
| Key words: Labudalin Shangkuli formation hydrocarbon source rocks organic geochemistry |
