塔河油田奥陶系多期岩溶作用的识别标志  

Identification signs of multiphase karstification of Ordovician reservoir in Tahe Oilfield

作　　者：万云[1] 刘存革[2] 刘洪[1] 刘建军[2] 袁福锋[3] 

机构地区：[1]重庆科技学院科技处,重庆401331 [2]中国石化西北分公司,新疆乌鲁木齐830011 [3]西南石油大学研究生院,四川成都610500

出　　处：《中国石油大学学报（自然科学版）》2009年第5期6-11,共6页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家自然科学基金项目(50604022);重庆市教委科技项目(KJ081412)

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。The identification signs of karstification in syndiagenetic stage, Caledonian Epidiagenetic stage, Early Ercynian Epidiagenetie stage and Epi-Hereynian 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 karstifieations 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.

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 

分 类 号：P588.2[天文地球—岩石学]