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公开(公告)号：US08672060B2
公开(公告)日：2014-03-18
申请号：US12844526
申请日：2010-07-27
摘要： A drill bit includes a bit body comprising at its upper end a connection adapted to connect to a drill string and at its lower end a plurality of journals extending downwardly and radially outward from a longitudinal axis of the bit. A plurality of roller cones are rotatably mounted on the plurality of journals and at least three rows of cutting elements are disposed on each of the plurality of roller cones. The outermost row of the at least three rows of cutting elements has an extension height to diameter ratio greater than a mid row, and the mid row has an extension height to diameter ratio greater than an innermost row.
摘要翻译： 钻头包括钻头主体，其上端包括适于连接到钻柱的连接件，并且在其下端包括从钻头的纵向轴线向下且径向向外延伸的多个轴颈。 多个辊筒可旋转地安装在多个轴颈上，并且至少三排切割元件设置在多个辊筒的每一个上。 所述至少三排切割元件的最外排具有大于中间行的延伸高度与直径之比，并且所述中间行的延伸高度与直径之比大于最内排。
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公开(公告)号：US07681670B2
公开(公告)日：2010-03-23
申请号：US10938069
申请日：2004-09-10
IPC分类号： E21B10/08
CPC分类号： E21B10/08 , E21B10/086 , E21B10/18 , Y10T29/49826
摘要： A two-cone drill bit with a hydraulic arrangement that can be used for one or more of the following: cleaning roller cones, impinging on a hole bottom, or inducing a helical flow field. A two-cone drill bit having a bit body formed from two leg sections and two spacing members; methods of manufacturing a two-cone drill bit; and methods of improving hydraulics of a two-cone drill bit are disclosed.
摘要翻译： 具有液压装置的双锥钻头可用于以下一个或多个：清洁滚筒锥体，撞击孔底部或引起螺旋流场。 一种双锥钻头，其具有由两个腿部段和两个间隔构件形成的钻头体; 制造双锥钻头的方法; 并公开了改进双锥钻头液压的方法。
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公开(公告)号：US08955413B2
公开(公告)日：2015-02-17
申请号：US12844589
申请日：2010-07-27
摘要： A method of manufacturing a roller cone drill bit may include forming a body of a single piece having an upper end and a lower end; machining at the lower end of the body at least two journals extending downward and radially outward from a central axis of the body; machining at least one of a ball passage, a hydraulic fluid passageway, a grease reservoir, and a lubricant passageway; and mounting roller cones on the at least two journals.
摘要翻译： 一种制造滚子锥钻头的方法可以包括：形成具有上端和下端的单件的主体; 在本体的下端处，从主体的中心轴向向下并径向向外延伸的至少两个轴颈进行加工; 加工球通道，液压流体通道，油脂储存器和润滑剂通道中的至少一个; 以及将滚筒锥体安装在所述至少两个轴颈上。
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公开(公告)号：US20100132510A1
公开(公告)日：2010-06-03
申请号：US12702179
申请日：2010-02-08
CPC分类号： E21B10/08 , E21B10/086 , E21B10/18 , Y10T29/49826
摘要： A two-cone drill bit with a hydraulic arrangement that can be used for one or more of the following: cleaning roller cones, impinging on a hole bottom, or inducing a helical flow field. A two-cone drill bit having a bit body formed from two leg sections and two spacing members. Methods of manufacturing a two-cone drill bit. Methods of improving hydraulics of a two-cone drill bit.
摘要翻译： 具有液压装置的双锥钻头可用于以下一个或多个：清洁滚筒锥体，撞击孔底部或引起螺旋流场。 一种双锥钻头，其具有由两个腿部段和两个间隔构件形成的钻头体。 制造双锥钻头的方法。 改进双锥钻头液压的方法。
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公开(公告)号：US09574405B2
公开(公告)日：2017-02-21
申请号：US11232434
申请日：2005-09-21
摘要： The invention provides an improved drill bit and a method for designing thereof. The drill bit includes a bit body, a journal depending from the bit body, and a disc rotatably mounted on the journal. The disc of the drill bit has PDC cutting elements disposed on it. Also provided is an improved cutting structure for the discs of the drill bit. The cutting structure includes a portion that is comprised from PDC.
摘要翻译： 本发明提供了一种改进的钻头及其设计方法。 钻头包括钻头本体，从钻头体悬垂的轴颈以及可旋转地安装在轴颈上的圆盘。 钻头的盘具有设置在其上的PDC切割元件。 还提供了用于钻头的盘的改进的切割结构。 切割结构包括由PDC组成的部分。
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公开(公告)号：US08185365B2
公开(公告)日：2012-05-22
申请号：US10809276
申请日：2004-03-25
CPC分类号： E21B10/00
摘要： A method for designing a drill bit in an earth formation, including defining parameters for a simulation of the drill bit drilling in earth formation, where the parameters comprise at least bit design parameters; executing the defined simulation; obtaining radial forces resulting from the executing of the defined simulation; applying a criterion to the obtained radial forces; and adjusting one of the at least bit design parameters in response to the applying of the criteria.
摘要翻译： 一种用于在地层中设计钻头的方法，包括定义用于在地层中钻头钻孔的模拟的参数，其中参数包括至少位设计参数; 执行定义的模拟; 获得由执行定义的模拟产生的径向力; 对所获得的径向力应用标准; 以及响应于所述标准的应用来调整所述至少位设计参数中的一个。
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公开(公告)号：US07549488B2
公开(公告)日：2009-06-23
申请号：US11970345
申请日：2008-01-07
IPC分类号： E21B10/08
CPC分类号： E21B10/086 , E21B10/08 , E21B10/16
摘要： A two-cone drill bit that exhibits improved stability. In one embodiment, the two-cone drill bit has a first and a second roller cone arranged to have a cone separation angle between about 145 degrees and about 166 degrees. In some embodiments, the two-cone drill bit has a plurality of cutting elements arranged on the roller cones such that a bottom hole coverage greater than about 17 percent is achieved per revolution of the two-cone drill bit.
摘要翻译： 双锥钻头表现出改善的稳定性。 在一个实施例中，双锥钻头具有布置成具有约145度至约166度之间的锥形分离角度的第一和第二辊锥。 在一些实施例中，双锥钻头具有布置在滚子锥体上的多个切割元件，使得每一圆锥钻头实现了大于约17％的底孔覆盖率。
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公开(公告)号：US20110023663A1
公开(公告)日：2011-02-03
申请号：US12844589
申请日：2010-07-27
IPC分类号： B21K5/04
摘要： A method of manufacturing a roller cone drill bit may include forming a body of a single piece having an upper end and a lower end; machining at the lower end of the body at least two journals extending downward and radially outward from a central axis of the body; machining at least one of a ball passage, a hydraulic fluid passageway, a grease reservoir, and a lubricant passageway; and mounting roller cones on the at least two journals.
摘要翻译： 一种制造滚子锥钻头的方法可以包括：形成具有上端和下端的单件的主体; 在本体的下端处，从主体的中心轴向向下并径向向外延伸的至少两个轴颈进行加工; 加工球通道，液压流体通道，油脂储存器和润滑剂通道中的至少一个; 以及将滚筒锥体安装在所述至少两个轴颈上。
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公开(公告)号：US07316281B2
公开(公告)日：2008-01-08
申请号：US10938068
申请日：2004-09-10
CPC分类号： E21B10/086 , E21B10/08 , E21B10/16
摘要： A two-cone drill bit that exhibits improved stability. In one embodiment, the two-cone drill bit has a first and a second roller cone arranged to have a cone separation angle between about 145 degrees and about 166 degrees. In some embodiments, the two-cone drill bit has a plurality of cutting elements arranged on the roller cones such that a bottom hole coverage greater than about 17 percent is achieved per revolution of the two-cone drill bit.
摘要翻译： 双锥钻头表现出改善的稳定性。 在一个实施例中，双锥钻头具有布置成具有约145度至约166度之间的锥形分离角度的第一和第二辊锥。 在一些实施例中，双锥钻头具有布置在滚子锥体上的多个切割元件，使得每一圆锥钻头实现了大于约17％的底孔覆盖率。
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公开(公告)号：US20110024197A1
公开(公告)日：2011-02-03
申请号：US12844526
申请日：2010-07-27
IPC分类号： E21B10/00
摘要： A drill bit may include a bit body, comprising: at its upper end, a connection adapted to connect to a drill string; at its lower end, a plurality of journals extending downwardly and radially outward from a longitudinal axis of the bit; a plurality of roller cones rotatable mounted on the plurality of journals; and at least three rows of cutting elements disposed on each of the plurality of roller cones, wherein an outermost row has an extension height to diameter ratio greater than a mid row, and the mid has an extension height to diameter ratio greater than an innermost row.
摘要翻译： 钻头可以包括钻头体，其包括：在其上端，适于连接到钻柱的连接件; 在其下端处，从钻头的纵向轴线向下并径向向外延伸的多个轴颈; 多个可旋转地安装在所述多个轴颈上的辊筒; 以及设置在所述多个辊锥体中的每一个上的至少三排切割元件，其中最外排具有大于中排的延伸高度与直径比，并且所述中间具有大于最内排的延伸高度与直径之比 。
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