石油实验地质2018，Vol.40Issue(2)：260-267,8.DOI:10.11781/sysydz201802260
基于米兰科维奇天文旋回恢复地层剥蚀厚度——以松辽盆地X油田青山口组为例
Recovery of denuded strata thickness based on Milankovitch Astronomical Cycles:A case study of Qingshankou Formation in X Oilfield,Songliao Basin
摘要
Abstract
The Milankovitch Astronomical Cycles were applied to study the erosion thickness of Qingshankou For-mation(K2qn)in the X Oilfield, Songliao Basin. Spectral analysis and wavelet transform revealed that the Milankovitch Cycles occurred in the K2qn. We detected the eccentricity period of 100 ka,obliquity period of 40 ka and precession period of 20 ka in the K2qn. The bandpass filtering of 42 exploratory wells in the X Oilfield showed that,the K2qn has 35 to 43 eccentricity periods of 100 ka,which proved erosion phenomenon.The erosion thickness of K2qn is 0-98 m, and gradually decreases from northeast to southwest, where non-denuded areas distribute widely. Tectonic uplift and erosion took place regionally in the X Oilfield during or at the end of the sedimentation of K2qn.关键词
频谱分析/小波变换/米兰科维奇旋回/剥蚀厚度/青山口组/松辽盆地Key words
spectral analysis/wavelet transform/Milankovitch Cycles/erosion thickness/Qingshankou Forma⁃tion/Songliao Basin分类
能源科技引用本文复制引用
赵军,曹强,付宪弟,张飞飞,秦国英,闫文雯..基于米兰科维奇天文旋回恢复地层剥蚀厚度——以松辽盆地X油田青山口组为例[J].石油实验地质,2018,40(2):260-267,8.基金项目
国家科技重大专项课题(2011ZX05010-001)资助. （2011ZX05010-001）
