不同期次浊积扇体地震沉积学研究——以车西洼陷缓坡带车40-44块沙三上亚段为例

发布时间：2018-01-06 20:22

本文关键词：不同期次浊积扇体地震沉积学研究——以车西洼陷缓坡带车40-44块沙三上亚段为例　出处：《吉林大学学报(地球科学版)》2016年01期 　论文类型：期刊论文

【摘要】：以车西洼陷缓坡带车40-44块沙三上亚段为例,针对研究区浊积扇体"单期厚度难辨、纵向多期叠置,单个形态难识、横向顺势延展"的特点,在井震标定和分频解释共同确定的等时层序地层界限之内,以沉积相模式为指导,采用地震相分析与地层属性切片相结合的方法,对浊积扇体的横向展布形态和纵向演化规律进行描述和刻画,由此达到对不同期次浊积扇体进行精确识别和精细描述的目的。在研究过程中,主要形成以下几点认识:1Es31和Es34期次顶、底界限由井震结合标定,其等时性可利用分频解释技术确定;2根据地震相的分布位置及特点,发现浊积扇体均分布于同沉积断层下降盘,且"纵向叠置、横向迁移";3通过地层切片与均方根振幅属性相结合分析,刻画出不同期次浊积扇体横向上受地势影响、呈裙带状分布的规律,和纵向上自下而上扇体数量增多且连续性增强的变化规律。
[Abstract]:In the gentle slope of Chexi depression. With the car 40-44 block sand three sub section as an example, according to the research area of turbidite fan "single thickness ones, vertically stacked multi-stage single, difficult to form knowledge, characteristics of transverse spread according to the sequence in the range of well seismic calibration and interpretation to determine the stratigraphic boundaries, based on sedimentary facies model, phase analysis method combined with the seismic stratigraphic attribute sections, to depict the distribution of horizontal and vertical evolution of turbidite fan, so as to achieve the different stages of turbidite fan for accurate identification and reservoir description purposes. In the course of the study, the main form as follows: 1Es31 and Es34 times of the top and bottom boundaries, by the combination of well and seismic calibration, which can be used to determine the isochronous interpretation; 2 according to the seismic facies distribution and characteristics of turbidite fan were found distributed in synsedimentary fault layer decreased, and the" vertical To overlap, lateral migration "; 3, through the combination of stratigraphic slice and root mean square amplitude property, we can characterize the turbidity fan lateral transversely affected by the topography, the law of skirt distribution, and the change rule of the number of fans from bottom to top and increasing continuously.

【作者单位】：中国石油大学(华东)地球科学与技术学院;山东省油藏地质重点实验室;中海石油(中国)有限公司上海分公司;
【基金】：国家自然科学基金青年基金项目(41202092)~~
【分类号】：P631.4
【正文快照】： 3.中海石油(中国)有限公司上海分公司,上海2003350引言1998年,Zeng等[1-2]在关于地层切片的文章论述中最早提出“地震沉积学”的概念;在此基础上,2000年,Wolfgang Schlager[3]指出,为了满足沉积学应用、地质情况预测及地震解释的需要,地震沉积学将作为沉积学的一个新兴分支学

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