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固井二界面泥饼固化剂与水泥浆滤液的反应机理

崔云海

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文章导航 > 钻井液与完井液  > 2016 >  33(2): 69-74
崔云海. 固井二界面泥饼固化剂与水泥浆滤液的反应机理[J]. 钻井液与完井液, 2016, 33(2): 69-74. doi: 10.3969/j.issn.1001-5620.2016.02.015
引用本文: 崔云海. 固井二界面泥饼固化剂与水泥浆滤液的反应机理[J]. 钻井液与完井液, 2016, 33(2): 69-74. doi: 10.3969/j.issn.1001-5620.2016.02.015
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CUI Yunhai. Reaction of Mud Cake Solidifying Agent with Cement Slurry Filtrate in the Annulus Between Cement Sheath and Formation[J]. DRILLING FLUID & COMPLETION FLUID, 2016, 33(2): 69-74. doi: 10.3969/j.issn.1001-5620.2016.02.015
Citation: CUI Yunhai. Reaction of Mud Cake Solidifying Agent with Cement Slurry Filtrate in the Annulus Between Cement Sheath and Formation[J]. DRILLING FLUID & COMPLETION FLUID, 2016, 33(2): 69-74. doi: 10.3969/j.issn.1001-5620.2016.02.015
shu

固井二界面泥饼固化剂与水泥浆滤液的反应机理

doi: 10.3969/j.issn.1001-5620.2016.02.015

  • 中石化江汉石油工程有限公司, 湖北潜江 433124

基金项目: 国家自然科学基金面上项目"钻井液/水泥浆不变条件下固井二界面泥饼固化机理与界面交联机制(51174180)和国家重大专项子课题"低品位油气储层水平井固井完整性评价与控制新技术"(2016ZX05009003-003)。
详细信息
    作者简介:

    崔云海,高级工程师,1965年生,男,1985年毕业于西南石油学院钻井工程专业,主要从事油气田钻完井技术与管理工作。电话(0728)6581626;E-mail:zjcyh2005@sohu.com。

  • 中图分类号: TE256.9

Reaction of Mud Cake Solidifying Agent with Cement Slurry Filtrate in the Annulus Between Cement Sheath and Formation

  • Sinopec Jianghan Oilfield Service Corporation, Qianjiang, Hubei 433124, China

    摘要
  • 摘要: 固井二界面封隔失效已是制约油气高效开采的重要因素,而提高固井二界面胶结质量是解决这一工程难题的主要途径。基于提出的MCS (mud cake solidification)技术,采用现代分析测试技术,研究了固井二界面泥饼固化剂与水泥浆滤液的反应机理。研究结果表明,在压差的作用下泥饼固化剂的有效成分将发生向泥饼方向的迁移扩散,进而吸附在泥饼表面且渗透进入泥饼本体;泥饼固化剂与水泥浆滤液反应,生成水化硅酸钙(C-S-H)、水化铝酸钙(C3AH6)等胶凝物,且随着养护时间的延长,这些胶凝物可由低聚态的硅酸阴离子逐渐聚合为高聚态水化硅酸胶凝物,即在最初的3 h内,硅酸阴离子单聚体的量急剧下降,同时二聚体的量先增多后减少,最终生成高聚物,进而固化泥饼,提高固井二界面胶结质量。

     

    Abstract: The quality of cementation between cement sheath and borehole wall plays an important role in efficient producing a well.A study on the reaction mechanism of mud cake solidifying agent and filtrate of cement slurry has been conducted based on mud cake solidification technology and modern analysis and test technology.It reveals that the effective constituents of the solidifying agent under pressure will diffuse toward the mud cake,adsorb on the mud cake and finally go into the mud cake.Reaction of the solidifying agent and cement filtrate produces gelled substances such as hydrated calcium silicate (C-S-H) and hydrated calcium aluminate (C3AH6) of low polymerization degrees.These gelled substances,with time,will turn into high polymerization degree hydrated silicates,a process in which in the first 3 days,the quantity of monomer silicates decreases rapidly,the quantity of dimer silicates,at the same time,increases at first,and then decreases.These monomers and dimers will finally become silicates of high polymerization degree,making the mud cake solidified,hence improving the cementation quality of cement sheath and borehole wall.

     

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  • 收稿日期:  2015-11-29
  • 刊出日期:  2016-03-31

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