基于声波时差法恢复延安地区白垩纪末期剥蚀量  

Erosion recovery of later Cretaceous in Yan’an area by interval transit time method

作　　者：谢冲 张凤奇 李艳霞 谢红兵 XIE Chong;ZHANG Fengqi;LI Yanxia;XIE Hongbing(School of Earth Sciences and Engineering,Xi'an Shiyou University,Xi'an Shaanxi 710065,China;Shaanxi Key Laboratory of Petroleum Accumulation Geology,Xi'an Shaanxi 710065,China;Beijing Zhongke Xinyu Technology Development Co.,Ltd.,Beijing 100083,China)

机构地区：[1]西安石油大学地球科学与工程学院,陕西西安710065 [2]陕西省油气成藏地质学重点实验室,陕西西安710065 [3]北京中科鑫宇科技发展有限公司,北京100083

出　　处：《石油化工应用》2022年第12期78-83,92,共7页Petrochemical Industry Application

基　　金：国家科技重大专项专题“陆相页岩气成藏条件耦合及成藏主控因素研究”,项目编号:2017ZX05039-001-003;陕西省自然科学基础研究计划项目,项目编号:2017JM4004;陕西省教育厅重点实验室科研计划项目,项目编号:17JS110。

摘　　要：运用60口井的钻井、测井和录井等资料,利用声波时差法定量恢复了鄂尔多斯盆地延安地区白垩纪末期的地层剥蚀量。结果表明:鄂尔多斯盆地延安地区白垩纪末期剥蚀量变化较大,主要分布在400~1800 m,剥蚀量较大的区域在清涧、延川、延长等东部区域,其剥蚀量在1300~1800 m,由东往西剥蚀量逐渐减小,西部吴起区域减小到400 m左右。延安地区白垩纪末期剥蚀量整体上具有由东向西逐渐减小的分布特征。Based on the drilling,logging and logging data of 60 wells,the erosion of the later Cretaceous strata in Yan’an area of Ordos Basin was quantitatively restored by using interval transit time method.The results show that the erosion of Yan’an area in Ordos Basin changed greatly at the end of Cretaceous,mainly distributed in 400~1800 m.The area with large erosion was located in the eastern areas of Qingjian,Yanchuan and Yanchang,and the erosion was 1300~1800 m.The erosion gradually decreased from east to west,and decreased to about 400 m in the western Wuqi area.The erosion at the end of Cretaceous in Yan’an area generally decreased from east to west.

关 键 词：剥蚀量 声波时差 白垩纪末期 鄂尔多斯盆地 

分 类 号：TE121.3[石油与天然气工程—油气勘探]