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公开(公告)号：US11988064B2
公开(公告)日：2024-05-21
申请号：US17479032
申请日：2021-09-20
发明人： Paul R. Northam , Walter S. Dillard
CPC分类号： E21B34/025 , E21B21/10 , E21B34/16 , F16K31/047 , E21B21/08 , E21B2200/02
摘要： An apparatus can include a choke with a flow restrictor having at least two positions, a flow coefficient Cv of the choke with the flow restrictor in one position being less than with the flow restrictor in the other position, and an operational device that displaces the flow restrictor at a variable actuation rate, the actuation rate with the flow restrictor in one position being less than with the flow restrictor in the other position. A method can include displacing a flow restrictor, thereby decreasing a flow coefficient Cv of a choke, and decreasing a rate of change of the flow coefficient Cv in response to decreasing the flow coefficient Cv. A drilling system can include a choke with a flow restrictor, and a continuously variable transmission which causes an actuation rate to vary based on a position of the flow restrictor.
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公开(公告)号：US10174571B2
公开(公告)日：2019-01-08
申请号：US14988008
申请日：2016-01-05
发明人： Walter S. Dillard , Paul R. Northam
摘要： An assembly is used with a remote source of hydraulic power to control flow of wellbore fluid in a drilling system. At least one choke is operable to control the flow of the fluid to other portions of the system. At least one hydraulic actuator disposed with the choke actuates operation of the choke in response to the hydraulic power. At least one control valve disposed with the choke controls supply of the hydraulic power to and controls return of the hydraulic power from the actuator. An accumulator can be disposed with the choke and coupled to the supply upstream of the control valve. The control valve can couple to the actuator with a pair of pilot-operated check valves disposed in fluid communication between the control valve and the actuator. A stage tank and stage pump can be disposed with the choke. The tank receives the return from the control valve, and the stage pump can pump the return from the stage tank to the source.
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公开(公告)号：US11661805B2
公开(公告)日：2023-05-30
申请号：US17391159
申请日：2021-08-02
CPC分类号： E21B21/08 , E21B47/10 , G01F1/8409 , G01F1/88 , G01N11/04
摘要： A flow measurement apparatus can include a main flow passage, a bypass flow passage having an inlet and an outlet connected with the main flow passage, a mass flowmeter connected in the bypass flow passage between the inlet and the outlet, and a flow restrictor connected in the bypass flow passage between the inlet and the outlet. A method can include connecting the flow measurement apparatus, so that a fluid flow in the well also flows through the flow measurement apparatus, and determining at least one rheological parameter of a non-Newtonian fluid, based on an output of the flow measurement apparatus.
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公开(公告)号：US11131156B2
公开(公告)日：2021-09-28
申请号：US15375409
申请日：2016-12-12
发明人： Walter S. Dillard , Paul R. Northam
摘要： A drilling choke is controlled in a controlled pressure system. Pressure and position of the drilling choke are monitored. An adjustment to the position of the choke is determined based on the monitored pressure to control the drilling pressures. An actuation is produced of an actuator operably coupled to the choke to implement the determined adjustment. Rather than directly transferring, the actuation of the actuator is transferred with a transfer mechanism to motion of the choke in a non-linear relationship relative to the position of the choke. Generally, motion of the choke's internal trim (e.g., gate, ball, flapper, disc, etc.) is made quicker when near a fully opened position and is made slower when near a fully closed position. This reduces the need for strict precision for the motion. In the end, the monitored pressure is altered in response to the implemented choke adjustment.
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5.发明申请公开(公告)号：US20160084024A1
公开(公告)日：2016-03-24
申请号：US14859531
申请日：2015-09-21
发明人： Walter S. Dillard , Paul R. Northam , Gerald G. George , Lev Ring
CPC分类号： E21B21/08 , G01F1/8409 , G01F1/8477 , G01F15/024 , G01F15/10 , G01F15/14
摘要： A Coriolis flow meter for a drilling system measures flow from a wellbore and/or from at least one pump into the wellbore. The meter can be disposed upstream of at least one choke used for controlling backpressure, and/or the meter can be disposed between at least one pump and the wellbore. The meter has at least one flow tube adapted to vibrate and conducts the flow at a first pressure level from an inlet side to an outlet side. A vessel encloses the at least one flow tube at least between the inlet and outlet sides and holds a second pressure level therein about the at least one flow tube. The second pressure level can be equal to or nearly equal to the first pressure level to reduce or nearly eliminate a pressure differential across the at least one flow tube. For example, the second pressure level can be elevated above environmental relative to the first pressure level to reduce a pressure differential across the at least one flow tube. Alternatively, the second pressure level can be less than the first pressure level.
摘要翻译： 用于钻井系统的科里奥利流量计测量从井筒和/或从至少一个泵进入井筒的流量。 仪表可以设置在用于控制背压的至少一个扼流圈的上游，和/或该仪表可以设置在至少一个泵和井眼之间。 仪表具有至少一个流管，其适于在从入口侧到出口侧的第一压力水平处振动和传导流。 容器至少在入口侧和出口侧之间包围至少一个流管，并且在其中保持围绕至少一个流管的第二压力水平。 第二压力水平可以等于或几乎等于第一压力水平以减少或几乎消除穿过至少一个流管的压力差。 例如，可以相对于第一压力水平将第二压力水平提高到环境以上，以减小穿过至少一个流管的压力差。 或者，第二压力水平可以小于第一压力水平。
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公开(公告)号：US20180163489A1
公开(公告)日：2018-06-14
申请号：US15375409
申请日：2016-12-12
发明人： Walter S. Dillard , Paul R. Northam
CPC分类号： E21B21/08 , E21B21/10 , E21B21/106 , E21B44/00 , E21B2021/006
摘要： A drilling choke is controlled in a controlled pressure system. Pressure is monitored in the controlled pressure system, and position of the drilling choke is monitored. An adjustment to the position of the drilling choke is determined based on the monitored pressure to control the drilling pressures. An actuation is produced of an actuator operably coupled to the drilling choke to implement the determined adjustment. Rather than directly transferring, the actuation of the actuator is transferred with a transfer mechanism to motion of the drilling in a non-linear relationship relative to the position of the drilling choke. Generally, motion of the choke's internal trim (e.g., gate, ball, flapper, disc, etc.) is made quicker when near a fully opened position and is made slower when near a fully closed position. This reduces the need for strict precision for the motion. In the end, the monitored pressure is altered in response to the implemented adjustment of the drilling choke.
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公开(公告)号：US20160194927A1
公开(公告)日：2016-07-07
申请号：US14988008
申请日：2016-01-05
发明人： Walter S. Dillard , Paul R. Northam
CPC分类号： E21B21/08 , E21B21/01 , E21B2021/006
摘要： An assembly is used with a remote source of hydraulic power to control flow of wellbore fluid in a drilling system. At least one choke is operable to control the flow of the fluid to other portions of the system. At least one hydraulic actuator disposed with the choke actuates operation of the choke in response to the hydraulic power. At least one control valve disposed with the choke controls supply of the hydraulic power to and controls return of the hydraulic power from the actuator. An accumulator can be disposed with the choke and coupled to the supply upstream of the control valve. The control valve can couple to the actuator with a pair of pilot-operated check valves disposed in fluid communication between the control valve and the actuator. A stage tank and stage pump can be disposed with the choke. The tank receives the return from the control valve, and the stage pump can pump the return from the stage tank to the source.
摘要翻译： 一个组件与远程液压动力源一起使用，以控制钻井系统中井筒流体的流动。 至少一个扼流器可操作以控制流体流到系统的其它部分。 设置有扼流器的至少一个液压致动器响应于液压动力来致动扼流圈的操作。 设置有扼流器的至少一个控制阀控制供应液压动力并控制来自致动器的液压动力的返回。 蓄能器可以与扼流器一起设置并且联接到控制阀上游的供应。 控制阀可以通过在控制阀和致动器之间流体连通地设置的一对先导式止回阀来耦合到致动器。 可以在扼流圈上安装一个平台式的水箱和一个水泵。 油箱从控制阀接收到回油，水泵可以将回油罐从油罐泵送到源头。
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公开(公告)号：US20150345241A1
公开(公告)日：2015-12-03
申请号：US14719745
申请日：2015-05-22
发明人： Mark C. Glaser , Peter K. Chan , Paul R. Northam
IPC分类号： E21B23/12 , E21B23/01 , E21B33/129
CPC分类号： E21B23/002 , E21B23/01 , E21B29/06 , E21B33/128 , E21B33/1293
摘要： A whipstock assembly has a whip, a packer, and an anchor. The packer connects between the whip and the anchor and sets after the anchor is set. The anchor can be set mechanically or hydraulically. To communicate hydraulic pressure to the hydraulically-set anchor, the packer can have an internal bypass for communicating fluid or for passing a hydraulic line from the whip to the anchor. The packer is set mechanically with set down weight applied from the whip via a setting tool or the like. The packer sets eccentrically in the casing and acts as a fulcrum to push the tip of the whip against the inside of the casing.
摘要翻译： 造斜器组件具有鞭子，打包器和锚。 封隔器连接在鞭子和锚定器之间，并在锚定器固定后设置。 锚可以机械或液压地设置。 为了将液压传递到液压锚定装置，封隔器可以具有用于连通流体的内部旁路或用于将液压管路从鞭子传递到锚定装置。 封隔器通过设置工具等从鞭子施加设定的机械设置。 封隔器偏心地设置在壳体中，并且作为支点将鞭状物的尖端推到壳体的内部。
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公开(公告)号：US10094186B2
公开(公告)日：2018-10-09
申请号：US14943408
申请日：2015-11-17
IPC分类号： E21B21/08 , E21B33/134 , E21B33/129 , E21B33/128 , E21B21/10 , E21B7/00
摘要： A drilling system for drilling a wellbore has one or more valves or chokes to control the upstream pressure of drilling fluid flow in a controlled pressure drilling operation. A measurement is obtained of the drilling fluid flow from the wellbore. Based on the obtained measurement, the drilling fluid flow is selectively distributed with a distributor through one or more of a plurality of flowmeters, such as Coriolis meters. A reading of the drilling fluid flow is obtained from the selected flowmeter(s). Upstream pressure in the drilling fluid flow is controlled with the one or more valve based at least in part on the reading from the one or more selected flowmeters. The reading can be a flow rate, a pressure, or the like compared to capacities of the flowmeters. Additional valves downstream of the flowmeters can be controlled based on cavitation that the valves are estimated to produce.
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公开(公告)号：US10006264B2
公开(公告)日：2018-06-26
申请号：US14719745
申请日：2015-05-22
发明人： Mark C. Glaser , Peter K. Chan , Paul R. Northam
IPC分类号： E21B23/12 , E21B33/128 , E21B29/06 , E21B33/129 , E21B23/01
CPC分类号： E21B23/002 , E21B23/01 , E21B29/06 , E21B33/128 , E21B33/1293
摘要： A whipstock assembly has a whip, a packer, and an anchor. The packer connects between the whip and the anchor and sets after the anchor is set. The anchor can be set mechanically or hydraulically. To communicate hydraulic pressure to the hydraulically-set anchor, the packer can have an internal bypass for communicating fluid or for passing a hydraulic line from the whip to the anchor. The packer is set mechanically with set down weight applied from the whip via a setting tool or the like. The packer sets eccentrically in the casing and acts as a fulcrum to push the tip of the whip against the inside of the casing.
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