CAJ | 학술논문

南斜坡新沟嘴组原油为同一种成因类型的原油，具有较高的Pr／Ph、C2920R和伽马蜡烷／αβC30值。该区有效烃源岩主要分布在魏家场和金家场两个断背斜上，其岩石类型为泥岩、泥质白云岩和泥质灰岩，烃源岩中有机质丰度较高，处于热演化的成熟－高成熟早期阶段。油源对比表明，南斜坡Ex组原油具有双重来源，该区提供成熟－高成熟早期油，北部洼陷带提供高成熟油，两者混合后在本区 Ex下Ⅱ、Ex下Ⅲ油组成藏或沿断层侧向向上运移到Ex下Ⅰ油组、Ex上段成藏。魏家场和金家场构造带具有较好的油气勘探潜力。
남사파신구취조원유위동일충성인류형적원유，구유교고적Pr／Ph、C2920R화가마사완／αβC30치。해구유효경원암주요분포재위가장화금가장량개단배사상，기암석류형위니암、니질백운암화니질회암，경원암중유궤질봉도교고，처우열연화적성숙－고성숙조기계단。유원대비표명，남사파Ex조원유구유쌍중래원，해구제공성숙－고성숙조기유，북부와함대제공고성숙유，량자혼합후재본구 Ex하Ⅱ、Ex하Ⅲ유조성장혹연단층측향향상운이도Ex하Ⅰ유조、Ex상단성장。위가장화금가장구조대구유교호적유기감탐잠력。
The oil in Ex formation of southern slope of Jianglin depression has the same origin with high Pr/Ph , C2920R ,and Gammacerane/αβC30 .The active source rocks are mainly distributed in the two faulted anticlines of Weijiachang and Jinjiachang .The rock types are mudstone ,argillaceous dolomite ,and argillaceous limestone ,and there is abundant organic matter in the source rocks which are in the early thermal evolution stage of maturity to high maturity .The oil source correlation shows that the oil in Ex formation of the southern slope came from two places:the southern slope where matured - highly matured oil was generated in its early stage ,and the northern low -ly‐ing belt where highly matured oil was generated .The mixture of the two was accumulated in Ex下Ⅱand Ex下Ⅲ of Ex formation ,or migrated upward to Ex下Ⅰand Upper member of Ex formation .It is concluded that there is a great po‐tential for oil and gas exploration in the two structural belts of Weijiachang and Jinjiachang .