无侵害钻井液技术研究现状及展望  

Advances and Trends in Non-Invasive Drilling Fluids Technologies

作　　者：张克勤[1] 刘庆来[2] 杨子超[2] 唐虹[3] 贺建军[3] 

机构地区：[1]中国石油勘探开发研究院,北京100083 [2]中国石化西北分公司,新疆乌鲁木齐830011 [3]中国石油塔里木油田分公司,新疆库尔勒841000

出　　处：《石油钻探技术》2006年第1期1-5,共5页Petroleum Drilling Techniques

摘　　要：美国EDTI公司研制的DWC2000无侵害钻井液(non-invasive drilling fluid)主要由动滤失降低剂 (FLC-2000)、堵漏剂(LCP-2000)和润滑剂(KFA-2000)三种处理剂配制而成,其机理是通过物理化学和表面化学的作用,逐步封堵并形成封堵膜,使动滤失量降低,适用于淡水、盐水、饱和盐水和油基钻井液,加量仅为1％～ 2％,抗温可达204℃．可有效降低动滤失,提高渗透率恢复率。介绍了无侵害钻井液砂床滤失仪的结构及滤失量测量方法,对国外20种钻井液的API滤失量和砂床滤失量的对比结果进行了分析。详细介绍了我国在无渗透钻井液技术研究方面的主要进展,并对该技术进行了分析与展望。DWC2000,a non-invasive drilling fluid developed by EDTI Company in US,consists of FLC-2000（a dynamic fluid loss reagent）,LCP-2000 （a lost circulation material ）and KFT-2000（a lubricant）,Through actions of physical chemistry and surface chemistry,the drilling fluid can form blocking membrane on well wall to reduce dynamic filtration,Good results can be achieved especially for fresh water,brine,saturated brine and oil-based drilling fluid,The working temperature of the fluid is up to 204℃,The addition of 1%-2% DSC2000 can effectively reduce dynamic fluid loss and improve permeability recovery,In the article, a sand-bed fluid loss test device and its measuring method are presented.The comparisons of API filtration losses and sand-bed ones of 20 kinds of drilling fluids are also made.Major advances in non-invasive drilling fluid technologies in China are introduced in detail.In addition.its prospects are also presented.

关 键 词：无侵害钻井液 滤失量 砂床滤失量 钻井液添加剂 防止地层损害 

分 类 号：TE254.3[石油与天然气工程—油气井工程]