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窄密度窗口正注反挤低密度水泥浆固井技术

丁志伟 李嘉奇 赵靖影 张明辉 殷昌盛 何理

丁志伟, 李嘉奇, 赵靖影, 张明辉, 殷昌盛, 何理. 窄密度窗口正注反挤低密度水泥浆固井技术[J]. 钻井液与完井液, 2019, 36(6): 759-765. doi: 10.3969/j.issn.1001-5620.2019.06.018
引用本文: 丁志伟, 李嘉奇, 赵靖影, 张明辉, 殷昌盛, 何理. 窄密度窗口正注反挤低密度水泥浆固井技术[J]. 钻井液与完井液, 2019, 36(6): 759-765. doi: 10.3969/j.issn.1001-5620.2019.06.018
DING Zhiwei, LI Jiaqi, ZHAO Jingying, ZHANG Minghui, YIN Changsheng, HE Li. Normal Spotting and Reverse Squeezing of Low-density Cement Slurries in Wells with Narrow Safe Drilling Windows[J]. DRILLING FLUID & COMPLETION FLUID, 2019, 36(6): 759-765. doi: 10.3969/j.issn.1001-5620.2019.06.018
Citation: DING Zhiwei, LI Jiaqi, ZHAO Jingying, ZHANG Minghui, YIN Changsheng, HE Li. Normal Spotting and Reverse Squeezing of Low-density Cement Slurries in Wells with Narrow Safe Drilling Windows[J]. DRILLING FLUID & COMPLETION FLUID, 2019, 36(6): 759-765. doi: 10.3969/j.issn.1001-5620.2019.06.018

窄密度窗口正注反挤低密度水泥浆固井技术

doi: 10.3969/j.issn.1001-5620.2019.06.018
基金项目: 

中国石油天然气集团有限公司“深层与复杂地层钻完井新技术新方法研究”课题4“复杂工况条件下深井固井密封力学机理及控制技术研究”(2019A-3910)

详细信息
    作者简介:

    丁志伟,工程师,2013年硕士研究生毕业于天津大学,主要从事固井工作液体系与工艺研究。电话(010)80162263;E-mail:dingzwdr@cnpc.com.cn

  • 中图分类号: TE256.6

Normal Spotting and Reverse Squeezing of Low-density Cement Slurries in Wells with Narrow Safe Drilling Windows

  • 摘要: 针对西南油气田分公司蓥北1井φ273.05 mm套管固井存在漏层多、分布广,油气显示活跃,低温低密度水泥浆强度低及发展慢等固井难题。开发出了密度为1.23 g/cm3的高强度韧性防窜低密度水泥浆体系,该体系稠化时间可调,静胶凝强度发展快,62℃下440 min即起强度、24 h强度高达14.5 MPa,弹性模量为5.8 GPa。通过采用低密度高强度韧性防窜水泥浆、抗污染冲洗隔离液技术、软件模拟、优化浆柱结构、结合低密度与常规密度正注和反挤等配套技术,确保了蓥北1井φ273.05 mm套管固井施工安全,固井质量合格率为85%、优质率为65%。为西南油气田窄密度窗口固井提供了技术参考。

     

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出版历程
  • 收稿日期:  2019-08-22
  • 刊出日期:  2019-12-30

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