摘要
大型复合河道内部单一期次河道的识别对认识复合河道砂体内部的渗流特征及剩余油的挖潜具有重要的意义。针对过去复合河道内部单一期次河道识别方法单一、识别精度低、没有建立起具有普遍适用性的识别方法体系,以野外露头剖面为指导,利用同期不同河道侧向叠置法、高程差识别法、曲线特征法、断续河间沉积法、废弃河道法、夹层变化法、韵律变化法、河道砂体厚度差异法及动态差异法,通过三维视窗,采取三维多方法联动技术,实现了研究区单一期次河道的精细识别,对搞清不同沉积环境大面积分布的河道砂体内部的连通状况,确定油水井间的连通关系,提供了一种较好的技术手段。
The recognition of the single channel is of great significance to the understanding of the characteristics of the seepage inside the river and the potential of the remaining oil.In view of the single identification method of the river channel in the past in the compound river channel,the recognition accuracy is low,and a universally applicable identification method system has not been established.The use of the same channel lateral superposition method,elevation difference identification method,curve method,intermittent Hejian deposition,abandoned channel method,variation method,sandwich rhythm method,channel sand body thickness difference method and dynamic difference method,realizes the precise recognition of single study area time River adopt 3D multi method linkage technology by field outcrop profiles through 3D windows.It provides a better technical means to clarify the connected condition inside the large area distribution channel sand body and determine the connection relationship between the oil and water wells.
作者
苗厚纯
杨为华
于宏宇
李冰
袁和平
张善义
兰金玉
MIAO Hou-chun;YANG Wei-hua;YU Hong-yu;LI Bing;YUAN He-ping;ZHANG Shan-yi;LAN Jin-yu(Oil Recovery Plant No.5,Daqing Oilfield Corp.Ltd.,Daqing 163513,China)
出处
《河北地质大学学报》
2020年第1期51-56,共6页
Journal of Hebei Geo University
基金
国家科技重大专项“大庆长垣特高含水油田提高采收率示范工程”(2016ZX05054)。
关键词
复合砂体
辫状河道
边界识别
接触关系
compound sand body
braided river
boundary identification
contact relationship
