砂岩侵入体系物理模拟实验  

Simulation experiment of sand injectites

作　　者：易雪斐 张昌民[2] 李少华[2] 杜家元[2,3] 李康 王浩宇[2] 李向阳[4] 周凤娟 

机构地区：[1]非常规油气湖北省协同创新中心,湖北武汉430100 [2]长江大学油气资源与勘探技术教育部重点实验室,湖北武汉430100 [3]中海石油(中国)有限公司深圳分公司,广东广州510240 [4]河南省核工业地质局,河南信阳464000

出　　处：《古地理学报》2014年第5期605-612,共8页Journal of Palaeogeography：Chinese Edition

基　　金：国家"十二五"重大专项(编号:2011ZX05023-002)资助

摘　　要：近十年来,从露头、地震、岩心和测井曲线等资料中识别出了越来越多的砂岩侵入体。这些砂岩侵入体对油气勘探和开发既有正面影响,也有负面影响,但由于其发育过程和分布的复杂性,使得对于其成因机制和形成过程探讨较少。笔者建立了一套模拟砂岩侵入体系的实验装置,并设计了完整的实验程序,以模拟砂岩侵入体的形成过程,并探索其形成机理。在此基础上,进行了5组实验,分析了顶层沉积物厚度和进水管结构对砂岩侵入体形成的影响。通过对实验结果进行冷冻、切片和照相,将砂岩侵入体的形成过程分为5个阶段,并借助软件对每次实验的模型进行了三维重构,以期为更好地分析砂岩侵入体系的形成机理提供实验基础。More and more sand injectites have been identified from outcrops,seismic data,core ob-servation and logging curves in the last decade.They exert great influence upon exploration and develop-ment of oil and gas,both positively and negatively.But because of their complex formation process and dis-tribution,fewer studies has been focused on soft sediments deformation＆#39;s formation mechanisms.A set of laboratory simulation device is set up and a whole experimental procedure is designed to discuss their ge-netic mechanisms.On this basis,5 experiments considered the influence of two main variables on the structures formed during fluidization,i.e.,the thickness of the overlying coarse sediment layer and the con-figuration of inlet pipes,are carried out.Each experiment result is freezed,sliced and been taken photos to reconstruct a 3D model.It is hoped to provide an experimental basis for the formation mechanism analy-sis on sand injectites.

关 键 词：砂火山 形成机理 物理模拟 切片 模型重构 砂岩侵入体系 

分 类 号：P512.2[天文地球—地质学]