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    Failure Analysis of Large-Size Drilling Tools in the Oil and Gas Industry

    Source: Journal of Energy Resources Technology:;2024:;volume( 146 ):;issue: 007::page 73201-1
    Author:
    Mingjie, Cai
    ,
    Mingmin, He
    ,
    Leichuan, Tan
    ,
    Dan, Mao
    ,
    Jinchao, Xiao
    DOI: 10.1115/1.4065250
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: The safety problem of large-size drilling tools in large-size boreholes has become increasingly prominent with the exploration and development of deep and ultradeep wells. This study analyzes the causes of large-size drilling tool failures from the engineering point of view via statistical analysis, experimental material test, and vibration and bending analyses. Results show that the violent downhole vibration changes the drilling tool's mechanical properties. These changes result in an uneven distribution of hardness and reduced impact work, finally leading to the initiation of fatigue cracks at stress concentration points. Drilling tool bending is closely related to drilling parameters and bottom hole assembly (BHA) configuration. Unreasonable BHA configuration and drilling parameters increase BHA bending and accelerate fatigue failure. Once a crack is generated, the corrosive ions in water-based drilling fluids invade the microcrack, causing the corrosion of the drilling tool material. As a result, the strength is reduced, and the fracture is aggravated. Therefore, measures for preventing the failure of large-size drilling tools are proposed. We hope that the results of this work can provide useful guidance for drilling engineers.
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      Failure Analysis of Large-Size Drilling Tools in the Oil and Gas Industry

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4303296
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    • Journal of Energy Resources Technology

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    contributor authorMingjie, Cai
    contributor authorMingmin, He
    contributor authorLeichuan, Tan
    contributor authorDan, Mao
    contributor authorJinchao, Xiao
    date accessioned2024-12-24T19:06:34Z
    date available2024-12-24T19:06:34Z
    date copyright4/29/2024 12:00:00 AM
    date issued2024
    identifier issn0195-0738
    identifier otherjert_146_7_073201.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4303296
    description abstractThe safety problem of large-size drilling tools in large-size boreholes has become increasingly prominent with the exploration and development of deep and ultradeep wells. This study analyzes the causes of large-size drilling tool failures from the engineering point of view via statistical analysis, experimental material test, and vibration and bending analyses. Results show that the violent downhole vibration changes the drilling tool's mechanical properties. These changes result in an uneven distribution of hardness and reduced impact work, finally leading to the initiation of fatigue cracks at stress concentration points. Drilling tool bending is closely related to drilling parameters and bottom hole assembly (BHA) configuration. Unreasonable BHA configuration and drilling parameters increase BHA bending and accelerate fatigue failure. Once a crack is generated, the corrosive ions in water-based drilling fluids invade the microcrack, causing the corrosion of the drilling tool material. As a result, the strength is reduced, and the fracture is aggravated. Therefore, measures for preventing the failure of large-size drilling tools are proposed. We hope that the results of this work can provide useful guidance for drilling engineers.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleFailure Analysis of Large-Size Drilling Tools in the Oil and Gas Industry
    typeJournal Paper
    journal volume146
    journal issue7
    journal titleJournal of Energy Resources Technology
    identifier doi10.1115/1.4065250
    journal fristpage73201-1
    journal lastpage73201-11
    page11
    treeJournal of Energy Resources Technology:;2024:;volume( 146 ):;issue: 007
    contenttypeFulltext
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