塔西南坳陷石炭系碎屑储集岩的成岩演化

赵欣; 史基安; 王琪; 陈国俊

塔西南坳陷石炭系碎屑储集岩的成岩演化

1.
中国科学院兰州地质研究所, 甘肃兰州 730000;中国科学院兰州地质研究所, 北京 100039 甘肃兰州;长安大学地球科学与国土资源学院, 陕西西安 710054
2.
中国科学院兰州地质研究所, 甘肃兰州 730000
3.
中国科学院兰州地质研究所, 甘肃兰州 730000;中国科学院兰州地质研究所, 北京 100039 甘肃兰州

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出版历程
- 收稿日期: 2004-03-14
- 修回日期: 2004-02-04
- 发布日期: 2004-09-04

Diagenetic evolution of Carboniferous clastic reservoir in the southwest depression of Tarim basin

1.
Lanzhou Institute of Geology, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China;Graduate School of Chinese Academy of Sciences, Beijing 100039, China; 3. School of Earth Science and Land
2.
Lanzhou Institute of Geology, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China
3.
Lanzhou Institute of Geology, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China;Graduate School of Chinese Academy of Sciences, Beijing 100039, China; 3. School of Earth Science and Land

摘要

摘要: 研究区石炭系碎屑岩储集层的主要成岩作用为机械压实作用、胶结作用、交代作用、溶解作用和破裂作用.机械压实作用和胶结作用对储层物性改善有破坏作用;溶解作用、交代作用、破裂作用在一定程度上有利于改善碎屑储集岩的孔隙结构及储集物性.研究区碎屑岩储集层处于早成岩阶段B期-晚成岩B期.晚成岩期,烃类从源岩中进入储集层发生石油侵位,改变了岩石的成岩环境.由于烃类的侵位,使石英的次生加大、自生铁白云石的生长受到抑制,同时也对自生伊利石生长有抑制作用,黄铁矿由于烃类侵位分布在油层、油水层,尤其在油水层中较为发育.
- 碎屑储集岩 /
- 成岩作用 /
- 石油侵位
Abstract: The Southwest depression is a secondary structure in the Tarim basin,with an area of 1.225×10⁵ square kilometers,and the main reservoir and production layer within Permo-Carboniferous strata.The major diagenesis of Carboniferous clastic rocks is mechanical compaction,cementation,replacement,dissolution and fracturing.Compaction and cementation resulted in poor reserveoir properties,but dissolution,particularly dissolution during deep burial,improved reservoir properties of clastic reservoirs.Crevice caused by fracturing lead to physical property better in reservoir to a certain extent.
- clastic reservoir /
- diagenesis /
- oil emplacement

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