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公开(公告)号：US12140144B2
公开(公告)日：2024-11-12
申请号：US18474768
申请日：2023-09-26
Applicant: Schlumberger Technology Corporation
Inventor： Anton Kolyshkin , Li Guo
Abstract: A rotor for a mud motor includes a core having a first outer shape, and a shell positioned around the core, the shell having a second outer shape that is different from the first outer shape, the second outer shape defining one or more lobes and one or more cavities that are configured to engage a bore of a stator during rotation of the rotor relative to the stator. A thickness of the shell varies as proceeding around the core, from a non-zero minimum thickness to a maximum thickness.
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公开(公告)号：US20190316895A1
公开(公告)日：2019-10-17
申请号：US16383285
申请日：2019-04-12
Applicant: Schlumberger Technology Corporation
Inventor： Samba Ba , Maxim Pushkarev , Anton Kolyshkin
Abstract: A method, system, and computer-readable medium related to control of mud motors in drilling systems, of which the method includes measuring an eccentricity of rotation of a rotor in a stator of a mud motor using a rotor-position sensor, determining a torque of the mud motor based in part on the eccentricity, and selecting a fluid flow rate, a pressure, or both of fluid delivered downhole, through the mud motor, based in part on the determined torque.
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公开(公告)号：US12152587B2
公开(公告)日：2024-11-26
申请号：US17595287
申请日：2020-05-14
Applicant: Schlumberger Technology Corporation
Inventor： Anton Kolyshkin , Maxim Pushkarev , Samba Ba , Li Guo , Robert Little , Geoffrey Charles Downton
IPC: F04C2/107 , F04C13/00 , F04C18/107
Abstract: A mud motor includes a rotor and a stator. Drilling fluid received by cavities of the mud motor drives the rotor to rotate within the stator. The rotor includes one or more rotor lobes extending helically and defining a rotor pitch. The stator includes two or more stator lobes extending helically and defining a stator pitch. The rotor and the stator together define a tapered profile of the mud motor that varies proceeding from a top end of the mud motor to a bottom end of the mud motor. At least one of the rotor pitch or the stator pitch vary as proceeding from the top end of the mud motor to the bottom end of the mud motor.
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公开(公告)号：US20210189848A1
公开(公告)日：2021-06-24
申请号：US17123169
申请日：2020-12-16
Applicant: Schlumberger Technology Corporation
Inventor： Anton Kolyshkin , Lillian Guo , Yuxiang Liu , Miranda Amarante
Abstract: A stator for a mud motor and methods for manufacturing and using the same, of which one such method includes obtaining a mud motor having a stator made at least partially from a rubber. At least a portion of the rubber is cured by at most about 90%. The method also includes deploying the mud motor into a well as part of a drill string. The rubber is not further cured prior to deploying the mud motor into the well. The method further includes generating torque using the mud motor by pumping a mud through the stator.
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公开(公告)号：US11795946B2
公开(公告)日：2023-10-24
申请号：US17192044
申请日：2021-03-04
Applicant: Schlumberger Technology Corporation
Inventor： Anton Kolyshkin , Li Guo
CPC classification number: F04C2/1071 , E21B4/02 , F04C2/084 , F04C2/1076 , F04C2230/21 , F04C2230/91 , F04C2250/20 , Y10T29/49242
Abstract: A rotor for a mud motor includes a core having a first outer shape, and a shell positioned around the core, the shell having a second outer shape that is different from the first outer shape, the second outer shape defining one or more lobes and one or more cavities that are configured to engage a bore of a stator during rotation of the rotor relative to the stator. A thickness of the shell varies as proceeding around the core, from a non-zero minimum thickness to a maximum thickness.
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Patent Agency Ranking
公开(公告)号：US20210277719A1
公开(公告)日：2021-09-09
申请号：US17192044
申请日：2021-03-04
Applicant: Schlumberger Technology Corporation
Inventor： Anton Kolyshkin , Li Guo
Abstract: A rotor for a mud motor includes a core having a first outer shape, and a shell positioned around the core, the shell having a second outer shape that is different from the first outer shape, the second outer shape defining one or more lobes and one or more cavities that are configured to engage a bore of a stator during rotation of the rotor relative to the stator. A thickness of the shell varies as proceeding around the core, from a non-zero minimum thickness to a maximum thickness.
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公开(公告)号：US20170030184A1
公开(公告)日：2017-02-02
申请号：US15220269
申请日：2016-07-26
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Samba Ba , Anton Kolyshkin
Abstract: A method for determining a remaining life span of an elastomer in a motor. The method includes running a downhole tool into a wellbore. The downhole tool includes a mud motor having a rotor and a stator. At least one of the rotor or the stator includes, or is at least partially made from, an elastomer. A number of cycles before the elastomer fails may be predicted. A number of cycles during a time period may be determined. A change in a remaining life span of the elastomer over the time period may be determined, based upon the number of cycles before the elastomer fails and the number of cycles during the time period.
Abstract translation: 一种用于确定电动机中弹性体的剩余寿命的方法。 该方法包括将井下工具运行到井筒中。 井下工具包括具有转子和定子的泥浆马达。 转子或定子中的至少一个包括或至少部分地由弹性体制成。 可以预测在弹性体失效之前的多个循环。 可以确定在一段时间段内的多个周期。 弹性体在该时间段内的剩余寿命的变化可以基于弹性体失效前的循环次数和该时间段内的循环次数来确定。
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公开(公告)号：US20240026880A1
公开(公告)日：2024-01-25
申请号：US18474768
申请日：2023-09-26
Applicant: Schlumberger Technology Corporation
Inventor： Anton Kolyshkin , Li Guo
CPC classification number: F04C2/1071 , F04C2/1076 , E21B4/02 , F04C2/084 , F04C2230/21 , F04C2250/20 , F04C2230/91 , Y10T29/49242
Abstract: A rotor for a mud motor includes a core having a first outer shape, and a shell positioned around the core, the shell having a second outer shape that is different from the first outer shape, the second outer shape defining one or more lobes and one or more cavities that are configured to engage a bore of a stator during rotation of the rotor relative to the stator. A thickness of the shell varies as proceeding around the core, from a non-zero minimum thickness to a maximum thickness.
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公开(公告)号：US20240003241A1
公开(公告)日：2024-01-04
申请号：US18255589
申请日：2021-12-03
Applicant: Schlumberger Technology Corporation
Inventor： Yuelin Shen , Zhengxin Zhang , Wei Chen , Zhenyu Chen , Sylvain Chambon , Adrien Chassard , Samba Ba , Anton Kolyshkin , Dmitry Belov
Abstract: A method can include receiving real-time data during a drilling operation performed by a drillstring that includes a mud motor and a bit characterized by an expected performance profile; determining actual performance of the drillstring based at least in part on the real-time data; predicting degraded performance of the drillstring based at least in part on the real-time data and a mud motor degradation model; and updating the expected performance profile based on a comparison of the actual performance and the degraded performance.
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公开(公告)号：US20190186204A1
公开(公告)日：2019-06-20
申请号：US16214182
申请日：2018-12-10
Applicant: Schlumberger Technology Corporation
Inventor： Anton Kolyshkin , Maxim Pushkarev
CPC classification number: E21B4/02 , F01C1/101 , F04C2/084 , F04C2/10 , F04C2/1071 , F04C2/1073 , F04C2/1075 , F04C13/008 , F04C2240/10 , F04C2240/20 , F04C2250/20 , F04C2250/30
Abstract: A progressing cavity pump or a positive displacement motor includes an external member having three or more lobes and an internal member extending through the external member and having one less lobe than the external member. One of the internal member and the external member rotates with respect to the other. The curvature of a profile of each of the internal member and external member is finite at all points. A ratio of a lobe volume of the external member to a valley volume of the external member enclosed between a minor external member diameter and a major external member diameter is between 0.9 and 1.2. A lobe height of the external member is related to a ratio of a minor internal member diameter to one less than the number of internal member lobes.
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