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1. 发明授权

US4611673A Drill bit having offset roller cutters and improved nozzles 失效
标题翻译：钻头具有胶辊切割机和改进的喷嘴
公开(公告)号：US4611673A
公开(公告)日：1986-09-16
申请号：US553937
申请日：1983-11-21
申请人： John S. Childers , Paul E. Pastusek , Percy W. Schumacher, Jr.
发明人： John S. Childers , Paul E. Pastusek , Percy W. Schumacher, Jr.
IPC分类号： E21B10/16 , E21B10/18 , E21B10/52
CPC分类号： E21B10/18 , E21B10/16 , E21B10/52
摘要： This invention discloses a rolling cone drilling bit comprising a plurality of conical roller cutters having hard metal cutting elements thereon and being so positioned relative to each other that their rotational axes are offset from the rotational axis of the drill bit, and a drilling fluid nozzle system for directing a pressurized fluid stream across certain of the cutting elements and thereafter against the formation generally at the bottom of the well bore so that when the drill bit is used in its most advantageous areas, such as the soft, medium-soft and plastic formations, the nozzle system prevents "balling up" of the cutters and greatly increases the drilling efficiency of the bit.
摘要翻译：本发明公开了一种滚动圆锥钻头，包括多个圆锥滚子切割机，其上具有硬质金属切割元件，并且彼此相对定位，使得它们的旋转轴线偏离钻头的旋转轴线，钻井流体喷嘴系统用于将加压的流体流引导穿过某些切割元件，然后通常在井眼的底部反对形成，使得当钻头在其最有利的区域中使用时，例如软的，中软的和塑性的地层喷嘴系统防止切割器的“滚珠”，并大大提高钻头的钻孔效率。

2. 发明授权

US4323284A Thrust face bearing structure for rolling cutter drill bit 失效
标题翻译：滚动钻头的推力面轴承结构
公开(公告)号：US4323284A
公开(公告)日：1982-04-06
申请号：US197835
申请日：1980-10-17
申请人： John S. Childers , Terry H. Mayo
发明人： John S. Childers , Terry H. Mayo
IPC分类号： E21B10/22 , F16C17/04 , F16C33/24 , F16C17/12
CPC分类号： E21B10/22 , F16C17/04 , F16C33/24 , Y10S384/913
摘要： A rolling cutter drill bit is disclosed having an improved thrust face bearing structure which utilizes alternating segments of at least two different bearing metals. The composite thrust face bearing structure disclosed has a first metal selected for a low temperature operation, and at least one additional metal selected for high temperature operation.
摘要翻译：公开了一种具有改进的推力面轴承结构的滚切刀钻头，其利用至少两种不同轴承金属的交替部分。公开的复合推力面轴承结构具有选择用于低温操作的第一金属和选择用于高温操作的至少一种附加金属。

3. 发明授权

US4516642A Drill bit having angled nozzles for improved bit and well bore cleaning 失效
标题翻译：钻头具有成角度的喷嘴，用于改善钻头和井筒清洁
公开(公告)号：US4516642A
公开(公告)日：1985-05-14
申请号：US437927
申请日：1982-11-01
申请人： John S. Childers , Paul E. Pastusek
发明人： John S. Childers , Paul E. Pastusek
IPC分类号： E21B10/18
CPC分类号： E21B10/18
摘要： A rotary drill bit comprising a bit body having a chamber therein adapted to receive drilling fluid under pressure, a plurality of nozzles in communication with the chamber for exit of the drilling fluid, and a plurality of depending legs at its lower end, each having a bearing journal. The bit further includes a plurality of roller cutters, one for each leg, each cutter comprising a generally conical cutter body rotatably mounted on the bearing journal of the respective leg, and a plurality of cutting elements thereon. Each nozzle has an orifice in a position below the top of an adjacent roller cutter but above the central axis of the respective bearing journal at its inner end with respect to the bit body. In addition, each nozzle directs the fluid to flow in the direction opposite the direction of rotation of the bit, with the flow being generally tangent to the cutter body of the adjacent roller cutter, and thereafter impinging portions of the bottom of the well bore immediately forward of the adjacent roller cutter, whereby the drilling fluid cleans these portions of the well bore bottom and the cutting elements immediately prior to their engagement for enhanced drill bit cutting action.
摘要翻译：一种旋转钻头，包括钻头本体，其中具有适于在压力下接收钻井流体的腔室，与所述腔室连通以用于钻出流体的多个喷嘴，以及在其下端处的多个悬垂腿，每个具有轴承期刊。该钻头还包括多个滚子切割器，一个用于每个支腿，每个切割器包括可旋转地安装在相应支腿的轴承轴颈上的大致圆锥形的切割器主体，以及多个切割元件。每个喷嘴在其相对于钻头体的内端处具有在相邻辊切割器的顶部下方的位置处的孔口，但在相应的轴承轴颈的中心轴线的上方。此外，每个喷嘴引导流体沿与钻头的旋转方向相反的方向流动，其中流动通常与相邻辊切割器的切割器主体相切，并且此后立即冲击井的底部的部分在相邻的滚轮切割器的前方，钻井液在其接合之前立即清洗井眼底部和切割元件的这些部分以增强钻头切割动作。

4. 发明授权

US4546837A Drill bit having angled nozzles for improved bit and well bore cleaning 失效
标题翻译：钻头具有成角度的喷嘴，用于改善钻头和井筒清洁
公开(公告)号：US4546837A
公开(公告)日：1985-10-15
申请号：US625495
申请日：1984-06-28
申请人： John S. Childers , Paul E. Pastusek
发明人： John S. Childers , Paul E. Pastusek
IPC分类号： E21B10/18
CPC分类号： E21B10/18
摘要： A rotary drill bit for drilling a well bore comprising a bit body adapted to be detachably secured to a drill string and receive drilling fluid under pressure therefrom and having a plurality of depending legs and a nozzle system for exit of drilling fluid from the bit body. The drill bit further comprises a plurality of roller cutters, each cutter having a generally conical roller cutter body rotatably mounted on one of the legs and a plurality of cutting elements on the cutter body. The nozzle system directs a plurality of streams of drilling fluid from the bit body, each stream being so directed as to flow generally toward the cutter body of a roller cutter, with the stream impinging at least one cutting element on the roller cutter body, and thereafter impinging the well bore bottom at least in part at a generally pie shaped portion of the bottom which is within the vertical projection of the roller cutter on the well bore bottom and forward, with respect to the direction of rotation of the drill bit, of the points of engagement of the cutting elements of this latter roller cutter with the well bore bottom for improved cleaning action.
摘要翻译：一种用于钻井的旋转钻头，包括钻头体，该钻头体可拆卸地固定到钻柱上，并在其上承受压力下的钻井液，并具有多个悬臂，以及用于从钻头体排出钻井液的喷嘴系统。钻头还包括多个辊切割器，每个切割器具有可旋转地安装在一个腿上的大致圆锥形的滚子切割器主体和在切割器主体上的多个切割元件。喷嘴系统引导来自钻头体的多个钻井液流，每个流被引导为大致朝向滚子切割器的切割器主体流动，流体冲击滚子切割器主体上的至少一个切割元件，以及然后至少部分地将井眼底部撞击在底部的通常为饼形部分的位置，其位于滚筒切割器的垂直突起中的井眼底部上并相对于钻头的旋转方向向前该后轮辊切割机的切割元件与井眼底部的接合点用于改善清洁动作。

5. 发明授权

US4558754A Drill bit having angled nozzles 失效
标题翻译：钻头具有成角度的喷嘴
公开(公告)号：US4558754A
公开(公告)日：1985-12-17
申请号：US573245
申请日：1984-01-23
申请人： John S. Childers , Paul E. Pastusek
发明人： John S. Childers , Paul E. Pastusek
IPC分类号： E21B10/18
CPC分类号： E21B10/18
摘要： A rotary drill bit comprising a bit body adapted to be secured to a drill string and to receive drilling fluid under pressure therefrom, the body having a plurality of nozzles for exit of the drilling fluid, and a plurality of depending legs at its lower end. The bit further includes a plurality of roller cutters, one for each leg, each cutter comprising a generally conical cutter body rotatably mounted on the respective leg, and a plurality of cutting elements thereon. The cutter body at its conical surface is formed of a material resistant to erosion by high drilling fluid which may impinge it. Each nozzle directs the drilling fluid to flow in a stream generally toward the cutter body of an adjacent roller cutter, with the stream impinging at least one cutting element on the cutter body and thereafter impinging a portion of the bottom of the well bore forward of the bottom of the adjacent roller cutter, whereby the drilling fluid sequentially impinges and cleans first cutting elements and then portions of the well bore bottom immediately prior to their engagement for enhanced drill bit cutting action.
摘要翻译：一种旋转钻头，包括适于固定在钻柱上的钻头体，以及在其上承受压力的钻井液体，该主体具有多个用于钻出流体的出口的喷嘴以及在其下端的多个悬垂的支脚。该钻头还包括多个滚子切割器，每个支脚一个，每个切割器包括可旋转地安装在相应支脚上的大致圆锥形的切割器主体，以及多个切割元件。在其锥形表面处的切割器主体由能够冲击其的高钻井液侵蚀的材料形成。每个喷嘴引导钻井流体大致流向相邻辊切割器的切割器主体的流动，其中流体冲击切割器主体上的至少一个切割元件，然后将井眼的底部的一部分向前冲击底部，由此钻井液顺序地冲击和清洁第一切割元件，然后在其接合之前立即清洁井眼的一部分，以增强钻头切割动作。

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