论文部分内容阅读
以高分辨率三维地震资料为基础,利用平衡剖面模拟、Easy%Ro模拟和盆地模拟等方法,对研究区反转构造变形特征和烃源岩成熟度演化进行了定量研究和探讨,并分析了反转活动与油气成藏史的关系;研究结果表明,JX1-1反转构造自新生代以来经历了一次大规模的扭压反转作用,发生在渐新世东营组一、二段(距今30.3 Ma～23.3 Ma)沉积时期,造成盆地NW-SE向缩短2.74km,东营组约有780m的地层剥蚀量及2.73%的盆地缩短率;辽中凹陷JX1-1反转带有机质成熟度演化也显示,烃源岩均是在反转构造形成之后才陆续成熟生、排烃,并且主力烃源岩是在距今5.1 Ma才达到生、排烃高峰期;盆地模拟结果表明:由于反转作用造成JX1-1油田两期充注,第一期为距今31 Ma～24.6Ma,第二期为距今9.2Ma至今。
Based on the high-resolution 3D seismic data, the authors have made a quantitative study and discussion on the features of inversion tectonics and the maturity evolution of source rocks using the methods of balance profile, Easy% Ro and basin modeling. The results show that the reverse structure of JX1-1 experienced a large-scale torsional-stress reversal since the Cenozoic, occurring in the first and second stages of Oligocene Dongying formation This 30.3 Ma ~ 23.3 Ma depositional period resulted in NW-SE shortening of 2.74km in the basin and about 780m of denudation in the Dongying Formation and 2.73% of basin shortening rate. The evolution of organic matter maturity of the JX1-1 reversal belt in the central part of the Liaozhong depression It also shows that source rocks were gradually matured and exhausted after inversion structure was formed, and the main source rocks reached the peak of 5.1 Ma and reached the peak of hydrocarbon expulsion. The basin simulation results show that due to reversal The role of JX1-1 oilfield caused two filling, the first period from 31 Ma ~ 24.6Ma, the second period since the 9.2Ma so far.