复杂低渗透砂砾岩油藏水窜通道识别研究——以沙丘5井区梧桐沟组油藏为例  

THE RESEARCH ON WATERFLOOD CHANNELING PATH IDENTIFICATION OF COMPLICATED SANDY CONGLOMERATE RESERVOIR

作　　者：高敬善[1] 万文胜[1] 郭智能 杨香丽[1] 袁霁[1] 

机构地区：[1]中国石油新疆油田分公司准东采油厂,新疆阜康831511

出　　处：《新疆石油天然气》2016年第4期69-73,共5页Xinjiang Oil & Gas

摘　　要：沙丘5井区二叠系梧桐沟组油藏储层为中孔隙度、低渗透非均质性较强的砂砾岩储层。油藏开发目前已进入中高含水期,水淹水窜问题突出。本文通过高精度岩性识别图版的建立,区分出了8种不同的岩性识别标准,并将识别出的岩性与吸水剖面相结合,识别出吸水强度最高的岩性为砂砾岩,其中Ⅱ类砂砾岩的吸水强度比Ⅰ类砂砾岩更强。在此基础上,进一步描绘了该区水窜通道平面和剖面分布状况,并进行了验证,明确了水淹水窜特征,为油藏后续调整奠定了基础。The well area Shaqiu 5 Permian wutonggou formation reservoir is Sandy conglomerate one with medium-low porosity,low permeability but strong heterogeneity.Now the reservoir has been in the medium-high water cut stage,waterflood and channeling is a big problem.8 different lithologic identification criteria could be made in this article by the establishment of high precision lithologic identification profile.The highest absorption strength of lithology is sandy conglomerate that can be identified by the combination of identified lithology and injection profile,among which,type II sandy conglomerate is stronger than that of type Ⅰ.Based on this basis,this article not only describes the water channeling distribution state in plate and section of this area,but also makes verification an definition of waterflood and water channeling characteristics,providing the way for reservoir later development.

关 键 词：水窜通道识别 低渗透 砂砾岩油藏 水淹水窜 岩性识别图版 

分 类 号：TE357.5[石油与天然气工程—油气田开发工程]