复合砂体内单一河道的识别方法  

Sandbody Identification in Single Channels of Multi-sandbodies

作　　者：刘汝敏[1] 罗智[1] 王震[1] 刘志鹏[1] 孙红杰[1] 

机构地区：[1]中海油田服务股份有限公司开发工程所,河北廊坊065201

出　　处：《石油天然气学报》2010年第3期214-216,共3页Journal of Oil and Gas Technology

摘　　要：在油田注水开发过程中发现,在大面积分布的河道砂体中,处在河道某些部位的注采井之间原属一类连通,但注入井注入状况不好,油井采出状况也不好。经进一步研究表明,在这些大面积分布的河道砂体中还存在单一河道砂体边界。针对这种情况,需要展开单一河道砂体的追踪、分类,从而有利于复合砂体内部连通关系的认识,较准确地判断油水井的注入或来水方向。其方法是利用研究区有限的测井、测试、取心及示踪剂等资料进行分析研究,根据砂体切割及平面匹配关系对复合砂体进行分类。阐述了单一河道砂体的划分原则,并应用于X油田,总结出了曲流河道砂体特有的油水运动规律,为油田调整方案实施提供了地质依据。During the oilfield development by water-injection,in large-scale channel sandbody,some injection and production wells in the certain locations ware connectivity,where the conditions of injection and producing wells were poor.Further studies showed that there was a single sandbody boundary in such sandbody.Based on that situation,tracking and classifying single channel sandbody was necessary for recognizing the connectivity relation within the multi-sandbodies,accurately determining the water injection or incoming direction of oil-water wells,the method was to study it by using the limited data of well logging,well testing,coring and tracer.The multi-sandbodies,are classified according to sandbody partition and its areal relationship.Its classifying principle is described and it is used in X Oilfield,The special oil-water flow rules of meandering channel sand is summed up,by which a basis is provided for making a plan of oilfield adjustment.

关 键 词：河流相 复合砂体 单一河道 

分 类 号：P618.13[天文地球—矿床学]