Volume 35 Issue 6
Nov.  2018
Turn off MathJax
Article Contents
LI Ling, YANG Mengying, BAO Xuefei, OUYANG Wei, CHEN Junbin. A Brittle and Drillable Gel Slug for Use in Managed Pressure Drilling[J]. DRILLING FLUID & COMPLETION FLUID, 2018, 35(6): 82-86. doi: 10.3969/j.issn.1001-5620.2018.06.015
Citation: LI Ling, YANG Mengying, BAO Xuefei, OUYANG Wei, CHEN Junbin. A Brittle and Drillable Gel Slug for Use in Managed Pressure Drilling[J]. DRILLING FLUID & COMPLETION FLUID, 2018, 35(6): 82-86. doi: 10.3969/j.issn.1001-5620.2018.06.015

A Brittle and Drillable Gel Slug for Use in Managed Pressure Drilling

doi: 10.3969/j.issn.1001-5620.2018.06.015
  • Received Date: 2018-09-05
  • Publish Date: 2018-11-30
  • Severe mud losses, coexistence of blowout and mud loss and difficulty of drilling are problems associated with narrow safe drilling windows found in Moxigaoshiti and Xiadongchuan, Sichuan, and were all overcome thanks to the use of precisely managed pressure control drilling technology. In managed pressure control drilling, lack of effective and safe process control techniques during tripping and well completion also resulted in severe mud losses and high risk of well control. To resolve these problems, a brittle and drillable gel slug separating technology has been presented based on inorganic hydraulic cementing theory, close packing theory and strengthening through solidification theory. By selecting the best additives and optimizing, a gel slug-forming working fluid was prepared. Evaluation of the working fluid showed that it has good initial mobility and stability. The 40 Bc thickening time of the working fluid is manageable in 0.5-4.0 h. It functions normally at 150℃, and is resistant to contamination from drilling fluid. The gel slug, after becoming hardened, has compressive strength of 8.02 MPa. When bonded with the surfaces of the casing, the bond strength can be 1.45 MPa/m2. The hardened slug itself has good cementing performance, with gas containment capacity of no less than 2.69 MPa/m under pressure. Thus gel slug, after hardening, has drillability of grade 1, and can be drilled out with drill bit.

     

  • loading
  • [1]
    左星,肖润德,梁伟,等. 精细控压钻井技术在高石19井实践与认识[J]. 钻采工艺,2014,37(6):9-10.

    ZUO Xing,XIAO Runde,LIANG Wei,et al. Practice of precise managed pressure drilling technology in well GS19[J]. Drilling & Production Technology,2014,37(6):9-10.
    [2]
    左星,周井红,刘庆,等. 精细控压钻井技术在高石001-X4井的实践与认识[J]. 天然气勘探与开发, 2016,30(3):70-72.

    ZUO Xing,ZHOU Jinghong,LIU Qing,et al. Application of fine managed pressure drilling to GS001-X4 well[J].Natural Gas Exploration & Development,2016,30(3):70-72.
    [3]
    周峰,左星,李明宗.精细控压钻井技术在高石001-H2井的实践与认识[J]. 钻采工艺, 2017,40(5):19-21.

    ZHOU Feng,ZUO Xing,LI Mingzong. Application of managed pressure drilling on well GS001-H2 and understandings obtained[J].Drilling & Production Technology,2017,40(5):19-21.
    [4]
    陈芳,杨立军. 冻胶阀全过程欠平衡钻井技术在马207井的应用[J]. 西部探矿工程,2010(9):97-101. CHEN Fang,YANG Lijun. Application of underbalance well drilling gel valve technology on Ma207

    well[J]. West-China Exploration Engineering,2010(9):97-101.
    [5]
    刘德基,廖锐全,张慢来,等. 冻胶阀技术及应用[J]. 钻采工艺,2013,36(2):28-29

    ,33. LIU Deji,LIAO Ruiquan,ZHANG Manlai,et al. Technology and application of gel Valve[J].Drilling & Production Technology,2013,36(2):28-29,33.
    [6]
    梁大川,杜小勇,魏凤娟,等. 深井抗温聚合物凝胶封隔技术研究及应用[J]. 钻采工艺,2013,36(4):93-95.

    LIANG Dachuan,DU Xiaoyong,WEI Fengjuan,et al. Study of high temperature polymer gel sealing technology and its application in deep well[J]. Drilling & Production Technology,2013,36(4):93-95.
    [7]
    DOBSON JR J W,TRESCO K O,GEERDES B K. Ultra high viscosity pill and methods for use with an oil-based drilling system:U.S. patent application 12/833,673[P]. 2011-1-13.
    [8]
    赵启阳,邓慧,王伟,等. 一种可固化堵漏工作液室内研究[J]. 钻井液与完井液,2013,30(1):41-44.

    ZHAO Qiyang,DENG Hui,WANG Wei,et al. Laboratory study on curing lost circulation control fluid[J]. Drilling Fluid & Completion Fluid, 2013, 30(1):41-44.
    [9]
    陈友治,李方贤,王红喜. 水乳环氧对水泥砂浆强度的影响[J]. 重庆大学学报,2003,26(12):48-50.

    CHEN Youzhi,LI Fangxian,WANG Hongxi. The influence on the strength of cement mortars by emulsified epoxy[J].Journal of Chongqing University,2003,26(12):48-50.
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article views (423) PDF downloads(166) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return