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凸脊型非平面齿PDC钻头的研制与现场试验

彭齐 周英操 周波 刘川福 刘宇

彭齐, 周英操, 周波, 刘川福, 刘宇. 凸脊型非平面齿PDC钻头的研制与现场试验[J]. 石油钻探技术, 2020, 48(2): 49-55. doi: 10.11911/syztjs.2020035
引用本文: 彭齐, 周英操, 周波, 刘川福, 刘宇. 凸脊型非平面齿PDC钻头的研制与现场试验[J]. 石油钻探技术, 2020, 48(2): 49-55. doi: 10.11911/syztjs.2020035
PENG Qi, ZHOU Yingcao, ZHOU Bo, LIU Chuanfu, LIU Yu. Development and Field Test of a Non-Planar Cutter PDC Bit with Convex Ridges[J]. Petroleum Drilling Techniques, 2020, 48(2): 49-55. doi: 10.11911/syztjs.2020035
Citation: PENG Qi, ZHOU Yingcao, ZHOU Bo, LIU Chuanfu, LIU Yu. Development and Field Test of a Non-Planar Cutter PDC Bit with Convex Ridges[J]. Petroleum Drilling Techniques, 2020, 48(2): 49-55. doi: 10.11911/syztjs.2020035

凸脊型非平面齿PDC钻头的研制与现场试验

doi: 10.11911/syztjs.2020035
基金项目: 国家科技重大专项课题“深井超深井高效快速钻井技术及装备”(编号:2016ZX05020-002)、中国石油天然气集团公司重大科技专项“重大工程关键技术装备研究与应用”(编号:2018E-2102)和中国石油天然气股份有限公司重大科技专项“超深井钻井提速提质关键技术攻关”(编号:2018E-1808)联合资助
详细信息
    作者简介:

    彭齐(1986—),男,湖北武汉人,2010年毕业于长江大学石油工程专业,2013年获中国石油大学(北京)油气井工程专业硕士学位,2016年获中国石油大学(北京)油气井工程专业博士学位,工程师,现主要从事钻头及钻井提速研究。E-mail:lao.peng@163.com

  • 中图分类号: TE921+.1

Development and Field Test of a Non-Planar Cutter PDC Bit with Convex Ridges

  • 摘要:

    常规PDC钻头在钻进塔里木油田库车山前巨厚砾石层时存在破岩效率低、机械钻速慢和钻井周期长等问题,分析认为,砾石对常规PDC钻头的平面齿产生较大冲击力导致切削齿崩齿或严重磨损是钻速低的主要原因。为此,设计了一种凸脊型非平面齿,并研制了配套PDC钻头,将钻头破岩方式由常规PDC钻头的面切削转变为线压裂和面挤压,大大提高了钻头破岩效率。室内试验表明,凸脊型非平面齿具有良好的抗冲击性能与抗研磨性能,抗冲击性能是平面齿的10倍以上。2只凸脊型非平面齿PDC钻头在库车山前地区博孜区块某井砾石层井段进行了现场试验,创造了机械钻速最高、单只钻头进尺最长的区块纪录,与邻井常规PDC钻头相比,进尺提高1.5倍以上,平均机械钻速提高64%以上,提速效果明显。研究与试验表明,凸脊型非平面齿PDC钻头能够较好地满足库车山前巨厚砾石层高效钻进的要求,可为库车山前深层天然气的高效勘探开发提供了技术支持。

     

  • 图 1  常规PDC钻头切削齿受砾石冲击示意

    Figure 1.  Schematic of gravel impact on PDC bit cutter

    图 2  金刚石复合片切削齿受冲击损伤而出现断裂面

    Figure 2.  Fracture surface of PDC cutters due to impact damage

    图 3  非平面齿设计及其布齿方式

    Figure 3.  Non-planar cutter design and its layout

    图 4  非平面齿挤压破碎砾石示意

    Figure 4.  Schematic of gravel crushed by non-planar cutter

    图 5  非平面齿切削砂岩、泥岩示意

    Figure 5.  Schematic of cutting sandstone and mudstone by non-planar cutter

    图 6  冲击试验样品破损对比

    Figure 6.  Impact damage result comparisons of test samples

    图 7  抗研磨性能试验中平面齿和凸脊型非平面齿失效后的磨损状况

    Figure 7.  Wear status of planar tooth and non-planar convex ridge tooth in anti-wear performance test

    图 8  2只凸脊型非平面齿PDC钻头的冠部设计

    Figure 8.  Crown design of two convex ridge non-planar tooth PDC bits

    图 9  试验井钻头进尺和机械钻速统计结果

    Figure 9.  Statistical results of bit footage and ROP in test wells

    图 11  邻井B钻头进尺和机械钻速统计结果

    Figure 11.  Statistical results of bit footage and ROP in adjacent Well B

    图 10  邻井A钻头进尺和机械钻速统计结果

    Figure 10.  Statistical results of bit footage and ROP in adjacent Well A

    表  1  抗研磨性能试验中平面齿和凸脊型非平面齿的切削距离对比

    Table  1.   Comparison of cutting distances between the planar cutter and convex ridge type non-planar cutter in the anti-wear performance test

    切削齿失效前切削距离/m提高幅度,%
    平面齿凸脊型非平面齿
    样品17 259.1013 170.3781.4
    样品28 379.1912 739.8552.0
    样品37 681.5712 954.1768.6
    下载: 导出CSV
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  • 收稿日期:  2019-09-08
  • 修回日期:  2020-01-17
  • 网络出版日期:  2020-02-24

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