| 摘要: |
| 彭滩-杨井地区长2主力层砂岩岩石学、成岩作用、孔隙类型研究表明:该区长2储层岩石类型以长石砂岩和岩屑长石砂岩为主,成分和结构成熟度均较低,主要经历的成岩作用有压实作用、胶结作用、交代作用和溶解作用。根据砂岩成岩作用特征,结合其埋藏深度、岩石古地温、有机质成熟度等分析资料及岩石结构、孔隙类型特征,长2主力层主要处于晚成岩A期成岩阶段。 |
| 关键词: 鄂尔多斯盆地|长2储集层|成岩作用|成岩阶段 |
| DOI： |
| 附件 |
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| 基金项目: |
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| Diagenesis of the Chang-2 reservoirs in the Pengtan-Yangjing region,Ordos Basin |
| LI Xian-jing, LUO Shun-she, HAN Yong-lin, WANG Peng-wan |
(1. Hangzhou Research Institute of Geology, PetroChina, Hangzhou 310023, Zhejiang, China;
2. School of Geosciences, Yangtze University, Jingzhou 434023, Hubei, China;
3. Research Institute of Petroleum Exploration and Development, Changqing Oil Field Company, Xi'an 710021, Shaanxi, China) |
| Abstract: |
| The examination of petrology,diagenesis,porosity type and evolution indicates that the Chang-2 reservoirs composed of feldspar sandstone and lithic feldspar sandstone with low compositional and textural maturity have undergone several stages of diagenesis including compaction,cementation,replacement and dissolution.The Chang-2 reservoirs in the Pengtan-Yangjing region,Ordos Basin are now in Stage A of the late diagenesis judged from diagenetic characteristics,burial depth,palaeo-geotemperatures and organic matter maturity. |
| Key words: Ordos Basin|Chang-2 reservoirs|diagenesis|diagenetic stage |
