双级双速钻井工具设计与现场试验

宿振国, 唐志军

宿振国, 唐志军. 双级双速钻井工具设计与现场试验[J]. 石油钻探技术, 2019, 47(1): 59-64. DOI: 10.11911/syztjs.2019010
引用本文: 宿振国, 唐志军. 双级双速钻井工具设计与现场试验[J]. 石油钻探技术, 2019, 47(1): 59-64. DOI: 10.11911/syztjs.2019010
SU Zhenguo, TANG Zhijun. The Design and Field Testing of Two-Stage and Two-Speed Drilling Tools[J]. Petroleum Drilling Techniques, 2019, 47(1): 59-64. DOI: 10.11911/syztjs.2019010
Citation: SU Zhenguo, TANG Zhijun. The Design and Field Testing of Two-Stage and Two-Speed Drilling Tools[J]. Petroleum Drilling Techniques, 2019, 47(1): 59-64. DOI: 10.11911/syztjs.2019010

双级双速钻井工具设计与现场试验

基金项目: 国家科技重大专项“复杂地层钻井提速提效关键工具与装备研发”(编号:2016ZX05021-003)资助
详细信息
    作者简介:

    宿振国(1982-),男,山东高密人,2006年毕业于中国石油大学(华东)石油工程专业,2014年获中国石油大学(华东)油气井工程专业硕士学位,高级工程师,从事科研管理及井下工具研究工作。E-mail:suzg.ossl@sinopec.com

  • 中图分类号: TE921+.1;TE921+.2

The Design and Field Testing of Two-Stage and Two-Speed Drilling Tools

  • 摘要:

    为了充分发挥PDC钻头高效破岩的技术优势,进一步提高其在低渗透地层的机械钻速,研究并设计了双级双速钻井工具。采用数值模拟方法建立了双级双速钻井时的井底岩石物理模型,分析了井底岩石应力分布状态及双级双速钻井的破岩和提速机理;介绍了双级双速钻井工具的常见结构,指出了其技术优势;基于已有研究成果,并结合现场实际需要,从排量、输出扭矩与转速、钻进工具长度等方面进行优化设计,设计出了适用于ϕ215.9,ϕ241.3和ϕ311.1 mm井眼的双级双速钻井工具。设计的双级双速钻井工具在胜利油田3口井进行了现场试验,试验结果表明,双级双速钻井工具使用时钻压、泵压及工具性能稳定,机械钻速比邻井平均提高80.37%,总体效果显著。研究认为,设计的双级双速钻井工具综合性能好,在低渗透地层钻进时能够提高机械钻速,具有推广应用价值。

    Abstract:

    In order to fully exploit the technical advantages of PDC bit in rock breaking, and to further improve its ROP in low permeability formation drilling, a two-stage and two-speed drilling tool was studied and designed. A numerical simulation method was used to establish the bottom hole petrophysical model during the two-stage and two-speed drilling, stress field distribution and rock breaking/speed-up mechanisms of two-stage and two-speed drilling were analyzed. The common structure of two-stage and two-speed drilling tool and its technical advantages were presented. Based on the research results and field site requirements, the two-stage two-speed drilling tools for ϕ215.9, ϕ241.3 and ϕ311.1 mm diameter borehole were optimally designed considering flow rate, output torque and rotary speed, drilling tool length, etc.. The tool was tested in 3 wells of Shengli Oilfield and it showed that the WOB, pumping pressure and tool performance are stable, and the ROP is 80.37% higher than that of the offset wells with normal tools. The designed two-stage and two-speed drilling tool presents a good comprehensive performance and can be used to improve ROP in low permeability formation drilling with good application prospective.

  • 图  1   井底岩石应力场分布云图

    Figure  1.   Stress distribution of bottom hole rock distribution

    图  2   NOV公司研制的双级钻头

    Figure  2.   Two-stage drill bit developed by NOV

    图  3   同心分体式双级双速钻井工具示意

    Figure  3.   Schematic of concentric split two-stage and two-speed drilling tool

    图  4   Baker Hughes公司设计的同心分体式双级双速钻井工具

    Figure  4.   Concentric split two-stage and two-speed drilling tool designed by Baker Hughes

    图  5   营66–斜98井双级双速钻井工具与邻井常规钻具钻速对比

    Figure  5.   Comparison of ROP between two-stage and two-speed drilling tool in Well Y66-X98 and the conventional drilling tools in offset wells

    图  6   营2–斜更9井双级双速钻井工具与邻井常规钻具钻速对比

    Figure  6.   Comparison of ROP between two-stage two-speed drilling tool in Well Y2-XG9 and the conventional drilling tools in offset wells

    图  7   夏52–斜227井双级双速钻井工具与邻井常规钻具钻速对比

    Figure  7.   Comparison of ROP between two-stage two-speed drilling tool in Well X52-X227 and the conventional drilling tools in offset wells

    表  1   NOV公司双级钻头的钻井数据及与常规PDC钻头的钻速对比

    Table  1   Drilling data of NOV's two-stage drill bit and the comparison of ROP with conventional PDC bit

    序号 钻头直径/mm 地层 钻压/kN 转速/(r·min–1 进尺/m 钻进时间/h 机械钻速/(m·h–1
    一级钻头 二级钻头 双级钻头 PDC钻头
    1 171.4 215.9 砂岩 54~68 230 171.30 36.5 4.7 3.2
    2 127.0 165.1 砂质页岩 9~14 80 487.30 109.5 4.5 3.3
    3 177.8 250.8 砂质页岩 68~82 65 1 101.60 118.5 9.3 6.4
    4 171.4 215.9 砂岩页岩 59~100 70~140 174.00 25.6 6.8 3.6
    下载: 导出CSV

    表  2   营66–斜98井的井身结构

    Table  2   Casing program of Well Y66-X98

    开次 钻头直径/mm 井深/m 套管直径/mm 套管下深/m
    一开 346.1 301.00 273.1 300.00
    二开 215.9 2 520.57 139.7 2 518.00
    下载: 导出CSV

    表  3   营2–斜更9井设计井身结构

    Table  3   Casing program of Well Y2-XG9

    开次 钻头直径/mm 井深/m 套管直径/mm 套管下深/m
    一开 346.1 351.00 273.1 350.00
    二开 215.9 2 983.02 139.7 2 980.00
    下载: 导出CSV

    表  4   夏52-斜227井的井身结构

    Table  4   Casing program of well X52-X227

    开次 钻头直径/mm 井深/m 套管直径/mm 套管下深/m
    一开 346.1 351.00 273.1 350.00
    二开 215.9 3 226.52 139.7 3 223.00
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-09-27
  • 修回日期:  2018-12-14
  • 网络出版日期:  2019-01-10
  • 刊出日期:  2018-12-31

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