CAJ | 학술논문

综合应用钻井、地震等地质资料，以大量烃源岩样品地球化学分析为基础，从暗色泥岩分布、沉积环境、有机质丰度、类型、成熟度，烃源岩生烃史以及生物标志化合物等方面对南阳凹陷核三1段烃源岩地球化学特征进行了研究。结果表明研究区暗色泥岩发育，烃源岩有机质类型以I-II1型为主，有机质丰度高，整体为中等-好级别烃源岩；有效烃源岩现今大多处于低成熟-成熟演化阶段。单井生烃史模拟结果表明，核三1段底部烃源岩于核一段沉积早期开始生烃，于18 Ma左右开始进入大量生烃阶段，具有较高的生烃潜力。生物标志化合物分析结果表明，核三1段烃源岩沉积于半咸水-咸水，强还原-还原湖相沉积环境。
종합응용찬정、지진등지질자료，이대량경원암양품지구화학분석위기출，종암색니암분포、침적배경、유궤질봉도、류형、성숙도，경원암생경사이급생물표지화합물등방면대남양요함핵삼1단경원암지구화학특정진행료연구。결과표명연구구암색니암발육，경원암유궤질류형이I-II1형위주，유궤질봉도고，정체위중등-호급별경원암；유효경원암현금대다처우저성숙-성숙연화계단。단정생경사모의결과표명，핵삼1단저부경원암우핵일단침적조기개시생경，우18 Ma좌우개시진입대량생경계단，구유교고적생경잠력。생물표지화합물분석결과표명，핵삼1단경원암침적우반함수-함수，강환원-환원호상침적배경。
Based on the drill and seismic date and the organic geochemical analysis data of the source rocks,the comprehensive research of the source rocks of H31 Formation in the Nanyang Depression was conducted from the aspects of the distribution of mud stone,sedimentary environment,geochemical characteristics of source rocks, history of the hydrocarbon generation and characteristics of the biomarkers,etc. The result indicated that the studied area had the characteristics of good dark mudstone,high abundance of organic matter,I-II1 organic matter type, low maturity or maturity. The result of the history simulation of hydrocarbon generation indicated that the H31 source rocks began generation from the mid period of H1 Formation,even reaching the peak stage of hydrocarbon generation from 18 Ma. The biomarkers analysis showed that the source rock of H31 deposited in brackish water-salt water and highly reduced-reduced environment.