CAJ | 학술논문

玉北地区奥陶系是塔里木盆地海相碳酸盐岩油气勘探的重要目的层和产层。通过观察岩石薄片和铸体薄片，结合岩心观察、扫描电镜、阴极发光，辅以地化资料等，对玉北地区奥陶系成岩作用进行研究，认为：玉北地区奥陶系的主要建设性成岩作用有岩溶、白云化、重结晶和溶蚀作用等，破坏性成岩作用有压实-压溶、胶结、硅化和充填作用等，此外，还有去白云化、褐铁矿化、泥晶化等对储集性能影响极小的成岩作用，可划分为同生成岩阶段、早—晚成岩阶段和表生成岩阶段。
옥북지구오도계시탑리목분지해상탄산염암유기감탐적중요목적층화산층。통과관찰암석박편화주체박편，결합암심관찰、소묘전경、음겁발광，보이지화자료등，대옥북지구오도계성암작용진행연구，인위：옥북지구오도계적주요건설성성암작용유암용、백운화、중결정화용식작용등，파배성성암작용유압실-압용、효결、규화화충전작용등，차외，환유거백운화、갈철광화、니정화등대저집성능영향겁소적성암작용，가화분위동생성암계단、조—만성암계단화표생성암계단。
Ordovician formation of Yubei area is an important purpose and production layer of oil and gas exploration about marine carbonate in Tarim basin.By observing rock and cast thin slice,combining the core observation,scanning electronic microscope,cathodoluminescence, supplemented by geochemical data and so on,the author studied the diagen-esis of Ordovician formation inYubei area,the study showsthat:the major constructive diagenesises of Ordovician forma-tion in Yubei area are karst,dolomitization recrystallization and dissolution,etc.The major destructive diagenesises of Or-dovician formation in Yubei area are compaction-pressure solution,cementation silicon and filling the role,in addition, there are undolomitization,Limonitization,micritization which impact on reservoir properties minimally.Ordovician for-mation in Yubei area can be divided into Generation stage with rock,early middle and late diagenetic stage and epidiagen-esis stage.