CAJ | 학술논문

板桥—北大港地区深层（3500m以下深度）沙二段、沙三段发育以深水浊积扇、扇三角洲和冲积扇指状砂坝为主的碎屑岩沉积体系。为了评价深层砂岩的储集性能，在沉积特征研究的基础上，利用岩石薄片、阴极发光、扫描电镜、X-衍射、镜质体反射率等分析手段，研究深层碎屑岩储集层的岩石学特征、成岩作用及成岩演化阶段。研究结果认为，沉积相类型、异常高压和成岩演化对板桥—北大港地区储集层性能有重要影响，孔隙类型以次生孔隙为主，发育两个次生孔隙带，有机酸和CO2是导致次生孔隙形成的直接因素。图5表1参3 (李建国摘)
판교—북대항지구심층（3500m이하심도）사이단、사삼단발육이심수탁적선、선삼각주화충적선지상사패위주적쇄설암침적체계。위료평개심층사암적저집성능，재침적특정연구적기출상，이용암석박편、음겁발광、소묘전경、X-연사、경질체반사솔등분석수단，연구심층쇄설암저집층적암석학특정、성암작용급성암연화계단。연구결과인위，침적상류형、이상고압화성암연화대판교—북대항지구저집층성능유중요영향，공극류형이차생공극위주，발육량개차생공극대，유궤산화CO2시도치차생공극형성적직접인소。도5표1삼3 (리건국적)
The Es2-3 Member with buried depth more than 3500m in Banqiao-Beidagang area, consists of clastic rocks, develops a sedimentary system mainly containing deep-water turbidite fan,fan delta and alluvial digitate sand bar. On the basis of research results of the sedimentary feature, the authors mainly studied lithologic features, diagenesis and rock evolution stages by means of rock thin section, cathodology, SEM, X-ray diffraction, as well as vitrinite reflactance. Meanwhile, we have made both the deep sandstone reserving ability evaluation and the causing factors analysis, and found out that the pore type of the reservoir in Banqiao-Beidagang area is dominated by secondary pores that make up two secondary pore zones. This study also indicates that it is the abnormal high-pressure zone and the organic matter that caused formation of the secondary pores directly.