摘要
针对塔东地区实际地质资料和低勘探程度的特点，应用声波时差、镜质体反射率、沉积速率等多种综合方法，计算11口钻井的奥陶系剥蚀量．平面上奥陶系顶面剥蚀厚度的求取主要依据27条地震剖面资料，应用沉积速率法计算剥蚀量，且剥蚀量的数量级受邻近钻井值的约束，并绘制了奥陶系剥蚀量平面图．研究区奥陶系顶面剥蚀量在111-2929m，总体趋势为南部剥蚀量大，北部剥蚀量小，即从盆地边部向盆地内部剥蚀量增加．东部剥蚀量相对较小，西部剥蚀量相对较大．
Ordovician stratigraphic erosion thickness of 11 wells was comprehensively calculated using acoustic transit times, vitrinite reflectances and deposition rates according to the geological data of eastern Tarimu Basin, Ordovician stratigraphic denudation thickness in plan is calculated using a deposition rate based on 27 seismic sections and actual values are controlled by wells. A contour diagram of Ordovician stratigraphic denudation thicknesses was compiled. Ordovician stratigraphic denudation thicknesses are between 111m-2929m. Thicknesses increase from north to south and from east to west.
出处
《新疆地质》
CAS
CSCD
2006年第4期389-391,共3页
Xinjiang Geology
关键词
塔里木盆地
镜质体反射率
声波时差
沉积速率
剥蚀量
East Tarimu Basin
vitrinite reflectance
acoustic transit time
deposition rate
Ordovicion stratigraphic erosion thickness
