| 摘要: |
| 通过岩心观察、薄片鉴定及古生物、地球化学等分析手段，结合区域地质资料和钻井测井资料对同生期大气水 溶蚀作用、加里东期表生岩溶作用、海西早期表生岩溶作用及埋藏期溶蚀作用的识别标志进行详细研究。结果表 明，各期岩溶作用在区域上的分布特征、岩溶产物的岩石学特征、成岩作用特征、地球化学特征、古生物特征等方面 都有明显的差别,以此为基础可建立各期岩溶作用的识别标志,指导油气勘探。 |
| 关键词: 塔河油田 奥陶系 岩溶作用 识别标志 加里东期 海西早期 同生期 埋藏期 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金项目(50604022)；重庆市教委科技项目(KJ081412) |
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| Identification signs of multiphase karstification of Ordovician reservoir in Tahe Oilfield |
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WAN Yun1,LIU Cun-ge2,LIU Hong1,LIU Jian-jun2,YUAN Fu-feng3
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(1.Scientific Research Department, Chongqing University of Science and Technology, Chongqing 401331，Chirm;2. Northwest Branch Company，SIN OPEC, Urumchi 830011, China;3.Graduate School of Southwest Petroleum University, Chengdu 610500, China )
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| Abstract: |
| The identification signs of karstification in syndiagenetic stage, Caledonian Epidiagenetic stage, Early Ercynian Epidiagenetic stage and Epi-Hercynian burial stage were studied in detail by the means of core observation，thin section analysis, paleontology and geochemistry on the basis of the information of regional geology, well drilling and well logging. The results show that the characteristics of the periodic karstifications are significantly different in the regional distribution, and the petrology，diagenesis，geochemistry and paleontology features of the kastic products are different. Therefore the identification marks of the periodic karstifications can be established to guide petroleum exploration. |
| Key words: Tahe Oilfield Ordovician formation karstification identification sign Caledonian Early Hercynian Syndiagenetic stage burial stage |
