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库车山前大尺寸套管固井技术

敖康伟 涂思琦 杨昆鹏 夏元博 曾建国

敖康伟,涂思琦,杨昆鹏,等. 库车山前大尺寸套管固井技术[J]. 石油钻探技术,2022, 50(6):85-91 doi: 10.11911/syztjs.2022042
引用本文: 敖康伟,涂思琦,杨昆鹏,等. 库车山前大尺寸套管固井技术[J]. 石油钻探技术,2022, 50(6):85-91 doi: 10.11911/syztjs.2022042
AO Kangwei, TU Siqi, YANG Kunpeng, et al. Cementing technologies with large-size casing in the Kuqa Piedmont [J]. Petroleum Drilling Techniques,2022, 50(6):85-91 doi: 10.11911/syztjs.2022042
Citation: AO Kangwei, TU Siqi, YANG Kunpeng, et al. Cementing technologies with large-size casing in the Kuqa Piedmont [J]. Petroleum Drilling Techniques,2022, 50(6):85-91 doi: 10.11911/syztjs.2022042

库车山前大尺寸套管固井技术

doi: 10.11911/syztjs.2022042
基金项目: 中国石油集团油田技术服务有限公司科技项目“深井复杂井钻完井综合提速研究与应用:塔里木山前大尺寸套管固井技术研究”(编号:2021T-01-02)、中国石油集团海洋工程有限公司科技项目“复杂井固井技术研究”(编号:202107-0201)联合资助
详细信息
    作者简介:

    敖康伟(1992—),男,江西新余人,2013年毕业于中国石油大学(北京)石油工程专业,2016年获中国石油大学(北京)石油与天然气工程专业硕士学位,工程师,主要从事固井技术方面的研究。E-mail:aokw@cnpc.com.cn

  • 中图分类号: TE21

Cementing Technologies with Large-Size Casing in the Kuqa Piedmont

  • 摘要:

    针对库车山前大尺寸套管环空带压的问题,结合现场资料和室内试验评价,分析了大尺寸套管环空带压产生的原因,并在此基础上,通过强化井筒,提高管柱居中度,增加浆体摩阻级差和壁面剪应力,严格要求水泥浆稠化、过渡和起强度时间,细化憋压候凝程序等措施,形成了快速封固、全程压稳的大尺寸套管固井技术。研究发现,分级固井方式对复杂工况的处置有限,顶替和压稳措施针对性不强,导致大尺寸套管固井窜槽严重,未压稳地层高压流体,造成一次固井质量差,从而引起库车山前大尺寸套管环空带压。大尺寸套管固井技术在库车山前成功应用6井次,整体固井顶替效率达到95%以上,水层段固井质量合格率大于90%,固井质量良好,具有一定的推广应用价值。

     

  • 图 1  水泥环密封完整性评价装置

    Figure 1.  Evaluation device for seal integrity of cement sheath

    图 2  中秋A井水泥环密封完整性评价结果

    Figure 2.  Evaluation results of seal integrity of cement sheath in Well ZQ-A

    图 3  大、小环空的宽窄边流道比

    Figure 3.  Wide-narrow flow channel ratio of large and small annulus

    图 4  大、小环空的固井顶替效率对比

    Figure 4.  Comparison of cementing displacement efficiency of large and small annulus

    图 5  中秋B井顶替效率模拟结果

    Figure 5.  Simulation results of displacement efficiency in Well ZQ-B

    图 6  不同流变性水泥浆不同环空返速下的壁面剪应力

    Figure 6.  Wall shear stress of slurry with different rheological properties under different annular velocities

    图 7  封隔式分级注水泥器

    Figure 7.  Staged cementing injector with packer

    图 8  大尺寸套管固井技术应用效果

    Figure 8.  Application performance of cementing technologies with large-size casing

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出版历程
  • 收稿日期:  2022-03-26
  • 录用日期:  2022-09-06
  • 修回日期:  2022-09-05
  • 网络出版日期:  2022-11-14

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