文章摘要
青西地区防塌钻井液体系的研究与应用
Research and Application of Anti-Collapse Drilling Fluid in Qingxi Block
  
DOI:
中文关键词: 阳离子钻井液  黏土矿物剖面  抑制性  封堵性  青西地区
英文关键词: cationic drilling fluid  clay mineral profile  inhibitory  sealing  Qingxi block
基金项目:中国石油天然气集团公司项目“钻井集成配套技术研究与应用”中课题“西部复杂深井、超深井优快钻井完井集成配套技术研究”的部分内容(项目编号2008D-2401)
作者单位
陈志学,崔柳,黎红胜,纪国栋,毕文欣,程荣超 1. 西南石油大学石油工程学院,四川成都610500/中国石油集团钻井工程技术研究院,北京100195
2. 中国石油集团钻井工程技术研究院
,北京,100195
3. 中国石油集团钻井工程技术研究院
,北京100195/中国石油勘探开发研究院,北京100083 
摘要点击次数: 1586
全文下载次数: 
中文摘要:
      通过室内X-衍射、钻屑回收率和膨胀率实验,得到青西地区地层黏土矿物分布规律,并建立了黏土矿物剖面。实验结果表明,地层黏土矿物呈M形分布,要求钻井液在上部地层应具备强抑制性,下部应具备封堵防塌能力,为不同井段钻井液性能的维护处理提供了科学依据。针对青西地层岩性特点和钻井液技术难点,结合使用的几种不同钻井液体系情况,开展了抑制剂、降滤失剂和高温稳定剂室内评价,优选出抑制性最强和封堵防塌能力最高的阳离子钻井液体系。其配方为4%膨润土+0.4%K—HPAN+0.6%SMC+0.4%HS-1+0.3%CHM+0.3%NW-1+2%SMP+2%PSC+4%SPNH。30余口井的现场试验结果表明,井下复杂和事故大幅度降低,钻井周期明显缩短,与使用前相比,复杂损失率由4.50%降为1.62%,平均机械钻速提高了26.88%,钻井周期缩短40.54%,且钻井液性能易于雏护,操作简单,满足安全快速钻井的要求。图8表5参3。
英文摘要:
      The law of stratigraphic physical and chemical properties of clay minerals distribution in Qingxi block was obtained by X-ray diffraction experiments,cuttings recovery rate and expansion ratio experiments,and the stratum clay mineral profile was built.Experiment results indicated that stratum clay minerals distributed as M shape,which need a strong inhibitory and sealing drilling fluid.It provided scientific basis for drilling fluid performance and maintenance in different sections.Aimed at the lithologic characteristics and drilling fluid technical difficulties in Qingxi block,the screening of inhibiter,fluid loss agent and high temperature stabilizer was done.The best formula of cationic drilling fluid with the strongest inhibitory and the highest sealing capability was established: 4% bent,0.4% K-HPAN,0.6% SMC,0.4% HS-1,0.3% CHM,0.3% NW-1,2% SMP,2% PSC,4% SPNH.After the application in more than 30 wells on site,the complex accidents in down hole greatly reduced and drilling cycle obviously shortened.The complex loss rate decreased from 4.50% to 1.62%,average rate of penetration enhanced by 26.88% and drilling cycle shortened by 40.5%.This drilling fluid could be easily maintained and operated which met the requirement of safe and fast drilling.
查看全文   查看/发表评论  下载PDF阅读器
关闭
点击这里给我发消息

点击这里给我发消息