邹书强, 张红卫, 伊尔齐木, 李翔. 顺北一区超深井窄间隙小尾管固井技术研究[J]. 石油钻探技术, 2019, 47(6): 60-66. DOI: 10.11911/syztjs.2019114
引用本文: 邹书强, 张红卫, 伊尔齐木, 李翔. 顺北一区超深井窄间隙小尾管固井技术研究[J]. 石油钻探技术, 2019, 47(6): 60-66. DOI: 10.11911/syztjs.2019114
ZOU Shuqiang, ZHANG Hongwei, Eerqm, LI Xiang. Slim Liner Cementing Technology for Ultra-Deep Wells with a Narrow Annulus in No.1 District of Shunbei Block[J]. Petroleum Drilling Techniques, 2019, 47(6): 60-66. DOI: 10.11911/syztjs.2019114
Citation: ZOU Shuqiang, ZHANG Hongwei, Eerqm, LI Xiang. Slim Liner Cementing Technology for Ultra-Deep Wells with a Narrow Annulus in No.1 District of Shunbei Block[J]. Petroleum Drilling Techniques, 2019, 47(6): 60-66. DOI: 10.11911/syztjs.2019114

顺北一区超深井窄间隙小尾管固井技术研究

Slim Liner Cementing Technology for Ultra-Deep Wells with a Narrow Annulus in No.1 District of Shunbei Block

  • 摘要: 顺北一区超深井窄间隙小尾管固井面临水泥环薄弱、注替泵压高、顶替效率低、井下温度高和高压盐水层发育等一系列技术难题,固井质量难以保证。为解决该问题,在总结前期固井施工经验的基础上,完善了井眼准备技术,优化了抗高温防气窜弹韧性水泥浆体系,开展了水泥石密封完整性研究,进行了固井流变学设计及压稳防气窜工艺优化,形成了顺北一区超深井窄间隙小尾管固井技术。该固井技术在现场应用3井次,固井质量良好,后期施工未发生水侵,保证了窄间隙段的长效密封性。顺北一区超深井窄间隙小尾管固井技术,不但解决了该区块的固井难题,还保障了该区块的安全、高效开发。

     

    Abstract: Slim liner cementing in ultra-deep wells with narrow annulus in the No.1 District of the Shunbei Block faces a series of technical challenges such as weak cement sheath, high displacement pumping pressure, low displacement efficiency, high bottomhole temperature and the development of high-pressure brine layer, which compromises the cementing quality. In order to solve those problems, on the basis of summarizing the previous operation experiences, small liner cementing technology for ultra-deep wells with narrow annulus in the No. 1 District of the Shunbei Block was formed by improving wellbore preparation technologies, optimizing the high temperature/gas channeling-proof elastic toughness cement slurry system, conducting cement stone sealing integrity research and carrying out cementing rheology design and stable-killing gas channeling-proof optimization. It has been applied in 3 wells in this area with good cementing quality. The subsequent operations were free from water intrusion, ensuring the long-term sealing of section with a narrow annulus. This cementing technology can not only effectively solve the cementing problems of this block, but also effectively ensure the safe and efficient development of the block.

     

/

返回文章
返回