公开(公告)号：US07607495B2

公开(公告)日：2009-10-27

申请号：US12046283

申请日：2008-03-11

申请人： Duane Bloom ,  Norman Bruce Moore ,  Robert Levay

发明人： Duane Bloom ,  Norman Bruce Moore ,  Robert Levay

IPC分类号： E21B4/04

CPC分类号： E21B23/04 ,  E21B4/18 ,  E21B2023/008

摘要： A hydraulically powered tractor includes an elongated body, two gripper assemblies, at least one pair of aft and forward propulsion cylinders and pistons, and a valve system. The valve system comprises an inlet control valve, a two-position propulsion control valve, a two-position gripper control valve, two cycle valves, and two pressure reduction valves. The inlet control valve spool includes a hydraulically controlled deactivation cam that locks the valve in a closed position, rendering the tractor non-operational. The propulsion control valve is piloted on both ends by fluid pressure in the gripper assemblies. The propulsion control valve controls the distribution of operating fluid to and from the propulsion cylinders, such that one cylinder performs a power stroke while the other cylinder performs a reset stroke. Each end of the gripper control valve is piloted by a source of high-pressure fluid selectively admitted by one of the cycle valves. The gripper control valve controls the distribution of operating fluid to and from the gripper assemblies. The cycle valves are spring-biased and piloted by fluid pressure in the propulsion cylinders, so that the gripper control valve shifts only after the cylinders complete their strokes. The pressure reduction valves limit the pressure within the gripper assemblies. These valves are spring-biased and piloted by the pressure of fluid flowing into the gripper assemblies. Some or all of the valves include centering grooves on the landings of the spools, which reduce leakage and produce more efficient operation. The propulsion control and gripper control valves include spring-assisted detents to prevent inadvertent shifting.

公开(公告)号：US20100108387A1

公开(公告)日：2010-05-06

申请号：US12606986

申请日：2009-10-27

申请人： Duane Bloom ,  Norman Bruce Moore ,  Robert Levay

发明人： Duane Bloom ,  Norman Bruce Moore ,  Robert Levay

IPC分类号： E21B4/04

CPC分类号： E21B23/04 ,  E21B4/18 ,  E21B2023/008

摘要： A hydraulically powered tractor includes an elongated body, two gripper assemblies, at least one pair of aft and forward propulsion cylinders and pistons, and a valve system. The valve system comprises an inlet control valve, a two-position propulsion control valve, a two-position gripper control valve, two cycle valves, and two pressure reduction valves. The inlet control valve spool includes a hydraulically controlled deactivation cam that locks the valve in a closed position, rendering the tractor non-operational. The propulsion control valve is piloted on both ends by fluid pressure in the gripper assemblies. The propulsion control valve controls the distribution of operating fluid to and from the propulsion cylinders, such that one cylinder performs a power stroke while the other cylinder performs a reset stroke. Each end of the gripper control valve is piloted by a source of high-pressure fluid selectively admitted by one of the cycle valves. The gripper control valve controls the distribution of operating fluid to and from the gripper assemblies. The cycle valves are spring-biased and piloted by fluid pressure in the propulsion cylinders, so that the gripper control valve shifts only after the cylinders complete their strokes. The pressure reduction valves limit the pressure within the gripper assemblies. These valves are spring-biased and piloted by the pressure of fluid flowing into the gripper assemblies. Some or all of the valves include centering grooves on the landings of the spools, which reduce leakage and produce more efficient operation. The propulsion control and gripper control valves include spring-assisted detents to prevent inadvertent shifting.

摘要翻译： 液压动力拖拉机包括细长主体，两个夹持器组件，至少一对后部和向前推进缸和活塞以及阀系统。 阀系统包括入口控制阀，双位推进控制阀，双位夹具控制阀，两个循环阀和两个减压阀。 入口控制阀阀芯包括液压控制的失活凸轮，其将阀锁定在关闭位置，使拖拉机不可操作。 推进控制阀通过夹具组件中的流体压力在两端被引导。 推进控制阀控制工作流体与推进缸的分配，使得一个气缸执行动力冲程，而另一个气缸执行复位冲程。 夹持器控制阀的每端由一个循环阀选择性地允许的高压流体源引导。 夹具控制阀控制工作流体与夹具组件的分配。 循环阀由推进缸中的流体压力弹簧偏置和引导，使得夹具控制阀仅在气缸完成其冲程之后才移动。 减压阀限制夹具组件内的压力。 这些阀由于流入夹具组件的流体的压力而被弹簧偏压和引导。 一些或所有阀门包括在卷轴的平台上的定心凹槽，其减少泄漏并产生更有效的操作。 推进控制和夹具控制阀包括弹簧辅助的棘爪，以防止意外移动。

公开(公告)号：US07080700B2

公开(公告)日：2006-07-25

申请号：US10759664

申请日：2004-01-19

申请人： Duane Bloom ,  Norman Bruce Moore ,  Robert Levay

发明人： Duane Bloom ,  Norman Bruce Moore ,  Robert Levay

IPC分类号： E21B4/04

CPC分类号： E21B23/04 ,  E21B4/18 ,  E21B2023/008

摘要： A hydraulically powered tractor includes an elongated body, two gripper assemblies, at least one pair of aft and forward propulsion cylinders and pistons, and a valve system. The valve system comprises an inlet control valve, a two-position propulsion control valve, a two-position gripper control valve, two cycle valves, and two pressure reduction valves. The inlet control valve spool includes a hydraulically controlled deactivation cam that locks the valve in a closed position, rendering the tractor non-operational. The propulsion control valve is piloted on both ends by fluid pressure in the gripper assemblies. The propulsion control valve controls the distribution of operating fluid to and from the propulsion cylinders, such that one cylinder performs a power stroke while the other cylinder performs a reset stroke. Each end of the gripper control valve is piloted by a source of high-pressure fluid selectively admitted by one of the cycle valves. The gripper control valve controls the distribution of operating fluid to and from the gripper assemblies. The cycle valves are spring-biased and piloted by fluid pressure in the propulsion cylinders, so that the gripper control valve shifts only after the cylinders complete their strokes. The pressure reduction valves limit the pressure within the gripper assemblies. These valves are spring-biased and piloted by the pressure of fluid flowing into the gripper assemblies. Some or all of the valves include centering grooves on the landings of the spools, which reduce leakage and produce more efficient operation. The propulsion control and gripper control valves include spring-assisted detents to prevent inadvertent shifting.

公开(公告)号：US07353886B2

公开(公告)日：2008-04-08

申请号：US11717467

申请日：2007-03-12

申请人： Duane Bloom ,  Norman Bruce Moore ,  Robert Levay

发明人： Duane Bloom ,  Norman Bruce Moore ,  Robert Levay

IPC分类号： E21B4/04

CPC分类号： E21B23/04 ,  E21B4/18 ,  E21B2023/008

摘要： A hydraulically powered tractor includes an elongated body, two gripper assemblies, at least one pair of aft and forward propulsion cylinders and pistons, and a valve system. The valve system comprises an inlet control valve, a two-position propulsion control valve, a two-position gripper control valve, two cycle valves, and two pressure reduction valves. The inlet control valve spool includes a hydraulically controlled deactivation cam that locks the valve in a closed position, rendering the tractor non-operational. The propulsion control valve is piloted on both ends by fluid pressure in the gripper assemblies. The propulsion control valve controls the distribution of operating fluid to and from the propulsion cylinders, such that one cylinder performs a power stroke while the other cylinder performs a reset stroke. Each end of the gripper control valve is piloted by a source of high-pressure fluid selectively admitted by one of the cycle valves. The gripper control valve controls the distribution of operating fluid to and from the gripper assemblies. The cycle valves are spring-biased and piloted by fluid pressure in the propulsion cylinders, so that the gripper control valve shifts only after the cylinders complete their strokes. The pressure reduction valves limit the pressure within the gripper assemblies. These valves are spring-biased and piloted by the pressure of fluid flowing into the gripper assemblies. Some or all of the valves include centering grooves on the landings of the spools, which reduce leakage and produce more efficient operation. The propulsion control and gripper control valves include spring-assisted detents to prevent inadvertent shifting.

摘要翻译： 液压动力拖拉机包括细长主体，两个夹持器组件，至少一对后部和向前推进缸和活塞以及阀系统。 阀系统包括入口控制阀，双位推进控制阀，双位夹具控制阀，两个循环阀和两个减压阀。 入口控制阀阀芯包括液压控制的失活凸轮，其将阀锁定在关闭位置，使拖拉机不可操作。 推进控制阀通过夹具组件中的流体压力在两端被引导。 推进控制阀控制工作流体与推进缸的分配，使得一个气缸执行动力冲程，而另一个气缸执行复位冲程。 夹持器控制阀的每端由一个循环阀选择性地允许的高压流体源引导。 夹具控制阀控制工作流体与夹具组件的分配。 循环阀由推进缸中的流体压力弹簧偏置和引导，使得夹具控制阀仅在气缸完成其冲程之后才移动。 减压阀限制夹具组件内的压力。 这些阀由于流入夹具组件的流体的压力而被弹簧偏压和引导。 一些或所有阀门包括在卷轴的平台上的定心凹槽，其减少泄漏并产生更有效的操作。 推进控制和夹具控制阀包括弹簧辅助的棘爪，以防止意外移动。

公开(公告)号：US07188681B2

公开(公告)日：2007-03-13

申请号：US11418546

申请日：2006-05-03

申请人： Duane Bloom ,  Norman Bruce Moore ,  Robert Levay

发明人： Duane Bloom ,  Norman Bruce Moore ,  Robert Levay

IPC分类号： E21B4/04

CPC分类号： E21B23/04 ,  E21B4/18 ,  E21B2023/008

摘要： A hydraulically powered tractor includes an elongated body, two gripper assemblies, at least one pair of aft and forward propulsion cylinders and pistons, and a valve system. The valve system comprises an inlet control valve, a two-position propulsion control valve, a two-position gripper control valve, two cycle valves, and two pressure reduction valves. The inlet control valve spool includes a hydraulically controlled deactivation cam that locks the valve in a closed position, rendering the tractor non-operational. The propulsion control valve is piloted on both ends by fluid pressure in the gripper assemblies. The propulsion control valve controls the distribution of operating fluid to and from the propulsion cylinders, such that one cylinder performs a power stroke while the other cylinder performs a reset stroke. Each end of the gripper control valve is piloted by a source of high-pressure fluid selectively admitted by one of the cycle valves. The gripper control valve controls the distribution of operating fluid to and from the gripper assemblies. The cycle valves are spring-biased and piloted by fluid pressure in the propulsion cylinders, so that the gripper control valve shifts only after the cylinders complete their strokes. The pressure reduction valves limit the pressure within the gripper assemblies. These valves are spring-biased and piloted by the pressure of fluid flowing into the gripper assemblies. Some or all of the valves include centering grooves on the landings of the spools, which reduce leakage and produce more efficient operation. The propulsion control and gripper control valves include spring-assisted detents to prevent inadvertent shifting.

公开(公告)号：US20080217059A1

公开(公告)日：2008-09-11

申请号：US12046283

申请日：2008-03-11

申请人： DUANE BLOOM ,  Norman Bruce Moore ,  Robert Levay

发明人： DUANE BLOOM ,  Norman Bruce Moore ,  Robert Levay

IPC分类号： E21B4/04

CPC分类号： E21B23/04 ,  E21B4/18 ,  E21B2023/008

摘要： A hydraulically powered tractor includes an elongated body, two gripper assemblies, at least one pair of aft and forward propulsion cylinders and pistons, and a valve system. The valve system comprises an inlet control valve, a two-position propulsion control valve, a two-position gripper control valve, two cycle valves, and two pressure reduction valves. The inlet control valve spool includes a hydraulically controlled deactivation cam that locks the valve in a closed position, rendering the tractor non-operational. The propulsion control valve is piloted on both ends by fluid pressure in the gripper assemblies. The propulsion control valve controls the distribution of operating fluid to and from the propulsion cylinders, such that one cylinder performs a power stroke while the other cylinder performs a reset stroke. Each end of the gripper control valve is piloted by a source of high-pressure fluid selectively admitted by one of the cycle valves. The gripper control valve controls the distribution of operating fluid to and from the gripper assemblies. The cycle valves are spring-biased and piloted by fluid pressure in the propulsion cylinders, so that the gripper control valve shifts only after the cylinders complete their strokes. The pressure reduction valves limit the pressure within the gripper assemblies. These valves are spring-biased and piloted by the pressure of fluid flowing into the gripper assemblies. Some or all of the valves include centering grooves on the landings of the spools, which reduce leakage and produce more efficient operation. The propulsion control and gripper control valves include spring-assisted detents to prevent inadvertent shifting.

摘要翻译： 液压动力拖拉机包括细长主体，两个夹持器组件，至少一对后部和向前推进缸和活塞以及阀系统。 阀系统包括入口控制阀，双位推进控制阀，双位夹具控制阀，两个循环阀和两个减压阀。 入口控制阀阀芯包括液压控制的失活凸轮，其将阀锁定在关闭位置，使拖拉机不可操作。 推进控制阀通过夹具组件中的流体压力在两端被引导。 推进控制阀控制工作流体与推进缸的分配，使得一个气缸执行动力冲程，而另一个气缸执行复位冲程。 夹持器控制阀的每端由一个循环阀选择性地允许的高压流体源引导。 夹具控制阀控制工作流体与夹具组件的分配。 循环阀由推进缸中的流体压力弹簧偏置和引导，使得夹具控制阀仅在气缸完成其冲程之后才移动。 减压阀限制夹具组件内的压力。 这些阀由于流入夹具组件的流体的压力而被弹簧偏压和引导。 一些或所有阀门包括在卷轴的平台上的定心凹槽，其减少泄漏并产生更有效的操作。 推进控制和夹具控制阀包括弹簧辅助的棘爪，以防止意外移动。

公开(公告)号：US06679341B2

公开(公告)日：2004-01-20

申请号：US10004965

申请日：2001-12-03

申请人： Duane Bloom ,  Norman Bruce Moore ,  Robert Levay

发明人： Duane Bloom ,  Norman Bruce Moore ,  Robert Levay

IPC分类号： E21B404

CPC分类号： E21B23/04 ,  E21B4/18 ,  E21B2023/008

摘要： A hydraulically powered tractor includes an elongated body, two gripper assemblies, at least one pair of aft and forward propulsion cylinders and pistons, and a valve system. The valve system comprises an inlet control valve, a two-position propulsion control valve, a two-position gripper control valve, two cycle valves, and two pressure reduction valves. The inlet control valve spool includes a hydraulically controlled deactivation cam that locks the valve in a closed position, rendering the tractor non-operational. The propulsion control valve is piloted on both ends by fluid pressure in the gripper assemblies. The propulsion control valve controls the distribution of operating fluid to and from the propulsion cylinders, such that one cylinder performs a power stroke while the other cylinder performs a reset stroke. Each end of the gripper control valve is piloted by a source of high-pressure fluid selectively admitted by one of the cycle valves. The gripper control valve controls the distribution of operating fluid to and from the gripper assemblies. The cycle valves are spring-biased and piloted by fluid pressure in the propulsion cylinders, so that the gripper control valve shifts only after the cylinders complete their strokes. The pressure reduction valves limit the pressure within the gripper assemblies. These valves are spring-biased and piloted by the pressure of fluid flowing into the gripper assemblies. Some or all of the valves include centering grooves on the landings of the spools, which reduce leakage and produce more efficient operation. The propulsion control and gripper control valves include spring-assisted detents to prevent inadvertent shifting.

摘要翻译： 液压动力拖拉机包括细长主体，两个夹持器组件，至少一对后部和向前推进缸和活塞以及阀系统。 阀系统包括入口控制阀，双位推进控制阀，双位夹具控制阀，两个循环阀和两个减压阀。 入口控制阀阀芯包括液压控制的失活凸轮，其将阀锁定在关闭位置，使拖拉机不可操作。 推进控制阀通过夹具组件中的流体压力在两端被引导。 推进控制阀控制工作流体与推进缸的分配，使得一个气缸执行动力冲程，而另一个气缸执行复位冲程。 夹持器控制阀的每端由一个循环阀选择性地允许的高压流体源引导。 夹具控制阀控制工作流体与夹具组件的分配。 循环阀由推进缸中的流体压力弹簧偏置和引导，使得夹具控制阀仅在气缸完成其冲程之后才移动。 减压阀限制夹具组件内的压力。 这些阀由于流入夹具组件的流体的压力而被弹簧偏压和引导。 一些或所有阀门包括在卷轴的平台上的定心凹槽，其减少泄漏并产生更有效的操作。 推进控制和夹具控制阀包括弹簧辅助的棘爪，以防止意外移动。

公开(公告)号：US20120061074A1

公开(公告)日：2012-03-15

申请号：US13300452

申请日：2011-11-18

申请人： Duane Bloom ,  Norman Bruce Moore ,  Rudolph Ernst Krueger, V

发明人： Duane Bloom ,  Norman Bruce Moore ,  Rudolph Ernst Krueger, V

IPC分类号： E21B23/01

CPC分类号： E21B23/10 ,  E21B4/18 ,  E21B17/1021 ,  E21B17/20 ,  E21B19/22 ,  E21B23/00 ,  E21B23/01 ,  E21B23/04 ,  E21B31/20 ,  E21B2023/008

摘要： A gripper assembly for anchoring a tool within a downhole passage and for possibly assisting movement of the tool within the passage. The gripper assembly includes an elongated mandrel and flexible toes that can be radially displaced to grip onto the surface of the passage. The toes are displaced by the interaction of a driver slidable on the mandrel and a driver interaction element on the toes. In one embodiment, the toes are displaced by the interaction of rollers and ramps that are longitudinally movable with respect to one another. In another embodiment, the toes are displaced by the interaction of toggles that rotate with respect to the toes.

摘要翻译： 一种用于将工具固定在井下通道内并用于可能协助工具在通道内移动的夹持器组件。 夹持器组件包括细长心轴和可以径向移位以容纳通道表面的柔性脚趾。 脚趾由在心轴上可滑动的驾驶员和脚趾上的驾驶员相互作用元件的相互作用而移位。 在一个实施例中，脚趾由于可相对于彼此纵向移动的辊和斜面的相互作用而移位。 在另一个实施例中，通过相对于脚趾旋转的切换的相互作用使脚趾位移。

公开(公告)号：US07185716B2

公开(公告)日：2007-03-06

申请号：US11415798

申请日：2006-05-01

申请人： Duane Bloom ,  Norman Bruce Moore ,  Ronald E. Beaufort

发明人： Duane Bloom ,  Norman Bruce Moore ,  Ronald E. Beaufort

IPC分类号： E21B4/18

CPC分类号： E21B17/18 ,  E21B4/18 ,  E21B7/062 ,  E21B23/08 ,  E21B33/1208 ,  E21B33/127 ,  E21B44/005 ,  E21B2023/008 ,  E21B2041/0028

摘要： A downhole drilling tractor for moving within a borehole comprises a tractor body, two packerfeet, two aft propulsion cylinders, and two forward propulsion cylinders. The body comprises aft and forward shafts and a central control assembly. The packerfeet and propulsion cylinders are slidably engaged with the tractor body. Drilling fluid can be delivered to the packerfeet to cause the packerfeet to grip onto the borehole wall. Drilling fluid can be delivered to the propulsion cylinders to selectively provide downhole or uphole hydraulic thrust to the tractor body. The tractor receives drilling fluid from a drill string extending to the surface. A system of spool valves in the control assembly controls the distribution of drilling fluid to the packerfeet and cylinders. The valve positions are controlled by motors. A programmable electronic logic component on the tractor receives control signals from the surface and feedback signals from various sensors on the tool. The feedback signals may include pressure, position, and load signals. The logic component also generates and transmits command signals to the motors, to electronically sequence the valves. Advantageously, the logic component operates according to a control algorithm for intelligently sequencing the valves to control the speed, thrust, and direction of the tractor.

摘要翻译： 用于在钻孔内移动的井下钻井拖拉机包括拖拉机主体，两个封隔器，两个后推进缸和两个前进推进缸。 主体包括后部和前部轴以及中央控制组件。 包装机和推进缸与拖拉机主体可滑动接合。 钻井液可以运送到包装机，以使封隔器夹紧在钻孔壁上。 钻井液可以被输送到推进缸，以选择性地向拖拉机主体提供井下或井上的液压推力。 拖拉机从延伸到表面的钻柱接收钻井液。 控制组件中的滑阀系统控制钻井液向封隔器和气缸的分布。 阀位由电机控制。 拖拉机上的可编程电子逻辑部件接收来自表面的控制信号和来自工具上各种传感器的反馈信号。 反馈信号可以包括压力，位置和负载信号。 逻辑部件还产生并发送命令信号到电机，以电子地顺序排列阀门。 有利地，逻辑部件根据用于智能地对阀进行排序的控制算法进行操作，以控制拖拉机的速度，推力和方向。

公开(公告)号：US07048047B2

公开(公告)日：2006-05-23

申请号：US10690054

申请日：2003-10-21

申请人： Duane Bloom ,  Norman Bruce Moore ,  Rudolph Ernst Krueger, V

发明人： Duane Bloom ,  Norman Bruce Moore ,  Rudolph Ernst Krueger, V

IPC分类号： E21B23/01

CPC分类号： E21B23/10 ,  E21B4/18 ,  E21B17/1021 ,  E21B17/20 ,  E21B19/22 ,  E21B23/00 ,  E21B23/01 ,  E21B23/04 ,  E21B31/20 ,  E21B2023/008

摘要： A gripper assembly for anchoring a tractor within a downhole passage and for assisting movement of the tractor within the passage. The gripper assembly includes an elongated mandrel and flexible toes that can be radially displaced to grip onto the surface of the passage. The toes are displaced by the interaction of a driver slidable on the mandrel and a driver interaction element on the toes. In one embodiment, the toes are displaced by the interaction of rollers and ramps that are longitudinally movable with respect to one another. In another embodiment, the toes are displaced by the interaction of toggles that rotate with respect to the toes.