固井质量评价技术探讨  

Discussions on Cementing Quality Evaluations

作　　者：齐奉忠[1] 申瑞臣[1] 李萍[1] 

机构地区：[1]中国石油勘探开发研究院廊坊分院完井所,河北廊坊065007

出　　处：《石油钻探技术》2005年第2期37-40,共4页Petroleum Drilling Techniques

摘　　要：介绍了国内外固井质量检测方法,分析了目前固井质量评价中存在的主要问题,探讨了客观评价固井质量的方法及建议。声幅测井由于受微环隙、快速地层、水泥环厚度等方面因素的影响,测井资料易出现多解,常造成对固井质量的误判、错判。目前,国内大部分油田仍沿用声幅测井评价固井质量,致使固井质量合格率存在虚高现象,一定程度上掩盖了固井中存在的问题,也制约了固井技术的发展和固井质量的进一步提高。声波/变密度测井技术有效弥补了声幅测井的不足,可以较好地评价第一、第二界面的水泥胶结状况,建议将该项技术作为基本的水泥胶结测井评价手段加以推广和应用,分区胶结测井等先进的测井技术作为声波/变密度测井的补充手段应用。This paper introduces the history of Cement Bond Log in domestic and foreign countries, analyzes the existing problems in cementing quality evaluation, discuss how to truly evaluate cementing quality. The present Cement Bond Log is deeply influenced by micro-annulus, high-velocity (fast) formation and thin cement sheath,etc. we often get wrong and mistake result. At present, most oil fields still use the CBL to evaluate cementing quality, and cover the problems of cementing technology, and also restrict the development of cementing technology. Variable Density Logging can well evaluate the cementing quality, especially the first and second interfaces , VDL can be used as a basic method to evaluate cement bond. The advanced Segment Bond Tool (SBT) can be applied in important or complicated wells, Suggestions of truly evaluating cementing quality are also discussed.

关 键 词：固井质量 质量评价 水泥胶结测井 声波全波列测井 

分 类 号：TE26[石油与天然气工程—油气井工程]