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公开(公告)号：WO2023064531A1
公开(公告)日：2023-04-20
申请号：PCT/US2022/046671
申请日：2022-10-14
摘要： An oscillation reduction tool configured to prevent or reduce high frequency torsional oscillation by torsionally decoupling a rotary steerable system from a bottom hole assembly, which includes a drilling motor. The tool may convert high frequency torsional oscillation into an internal axial movement without axial displacement of the tool's outer housing. The oscillation reduction tool may flatten an amplitude of high frequency torsional oscillation spikes throughout a spring arrangement. The mechanical energy associated with the internal axial movement is reduced through an internal shock absorbing mechanism, such as fluid movement through a nozzle or annular space. The oscillation reduction tool functions to reduce high frequency torsional oscillation independent of the weight on the bit of the drill string.
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公开(公告)号：WO2023033861A1
公开(公告)日：2023-03-09
申请号：PCT/US2022/013910
申请日：2022-01-26
申请人： RHEOVEST, LLC
IPC分类号： F04B49/00 , F04B15/00 , F04B23/04 , F04C2/00 , F04B53/00 , F04B15/02 , E21B43/00 , E21B7/00 , E21B21/00
摘要： A method for pumping a liquid-gas mixture into a subsurface well includes introducing gas into a liquid at a first pressure to generate a mixture. The mixture is pumped through a first positive displacement pump to a second pressure greater than the first pressure. The mixture at the second pressure is pumped through at least a second positive displacement pump to a third pressure greater than the second pressure. The mixture is moved into the subsurface well at at least the third pressure.
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公开(公告)号：WO2022120347A1
公开(公告)日：2022-06-09
申请号：PCT/US2021/072669
申请日：2021-12-01
申请人： HYPERSCIENCES, INC.
摘要： Systems for forming or extending a tunnel or shaft within geologic material may include a ram accelerator assembly for accelerating one or more projectiles into geologic material to weaken a region of the geologic material. The projectile(s) pre-condition the geologic material, such as by forming one or more holes in a central region of the material or to define a perimeter of the region to be displaced. A cutting tool or subsequent projectile impacts may then be used to remove the weakened material. The voids formed by the first projectile(s) cause compressive forces from subsequent impacts or cutting operations to be converted to tension forces that more efficiently break geologic material, which may fall into the voids created by the first projectile(s). The voids created by the projectile impacts may also control the material that is removed and the shape of a resulting section of the tunnel or shaft.
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公开(公告)号：WO2022043947A1
公开(公告)日：2022-03-03
申请号：PCT/IB2021/057883
申请日：2021-08-27
申请人： EAVOR TECHNOLOGIES INC. , TOEWS, Matthew , HOLMES, Michael , TORRE, Ariel , VETSAK, Aleksandr , HODDER, Mark
摘要： A method for drilling a geothermal well in a subterranean zone includes drilling, with a drill string, a wellbore of the geothermal well in the subterranean zone. An inherent temperature of the rock adjacent a rock face at a downhole end of the wellbore is at least 250 degrees Celsius. While drilling, a drilling fluid is flowed at a temperature at the rock face such that a difference between the inherent temperature of the rock adjacent the rock face and the temperature of the drilling fluid at the rock face is at least 100 degrees Celsius.
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公开(公告)号：WO2021234888A1
公开(公告)日：2021-11-25
申请号：PCT/JP2020/020046
申请日：2020-05-21
申请人： 日本電信電話株式会社
摘要： 社会インフラ設備に係る埋設物を省スペースで且つ作業の中断をせずに検出可能な探索装置及び探索方法を提供することを目的とする。 本探索装置及び本探索方法は、電磁波を送受信する送受信器を掘削装置の回転軸に取り付け、回転軸とともに送受信器を回転させ、掘削しながら電磁波を送信し、埋設物からの反射波を受信し、地中レーダーの原理に基づいて埋設物を検知する。このため、本探索装置及び本探索方法は、カート式電磁波レーダ方式のような作業スペースは不要であり、掘削作業を中断せずに、反射波の状態から埋設物が社会インフラ設備であるのか単なる石であるのかを判断することができる。
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公开(公告)号：WO2021207658A1
公开(公告)日：2021-10-14
申请号：PCT/US2021/026662
申请日：2021-04-09
摘要： A system and method are described for excavation of gravel from a gravel formation including an elongated cylindrical casing surrounding and supporting a rotating auger extending a chosen distance beyond an open end of the casing, and having openings through its upper surface for permitting gravel to enter the casing in addition to entering through the open end thereof, a source of vibration for vibrating the casing, a conveyor for removing material excavated by the system through an opening in the bottom surface of the casing, and a tracked excavator or other suitable vehicle for preventing the casing from rotating and for pushing the casing in a chosen horizontal direction into the gravel formation.
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公开(公告)号：WO2020252597A1
公开(公告)日：2020-12-24
申请号：PCT/CA2020/050863
申请日：2020-06-19
发明人： FALK, Kelvin , YORGASON, Brandon , THAUBERGER, Nick , STINN, Bob
摘要： Systems and methodologies are provided for simultaneously milling obstructions from within a subterranean wellbore while pumping the milled obstructions and debris from the wellbore to the surface. The present systems and methodologies are operative in a first milling and/or cleanout mode of operation to both mill the obstructions from the wellbore and then to clean such debris therefrom, a cleanout mode of operation alone, and/or a flushing mode of operation to flush the system and wellbore as desired. The present systems and methods of use may comprise providing at least one sealing assembly for sealingly positioning the system within the annular space of the wellbore, isolated the wellbore therebelow, providing at least one pump assembly configured in reverse circulation for cleaning the wellbore, and providing at least one milling assembly for milling obstructions from within the wellbore.
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公开(公告)号：WO2020190942A1
公开(公告)日：2020-09-24
申请号：PCT/US2020/023150
申请日：2020-03-17
发明人： GEE, Timothy William , MAUS, Stefan , McCARTHY, Kenneth Robert , MITKUS, Alexander Michael , SUN, Jin
摘要： Systems and methods for using stratigraphic heat maps to steer a well being drilled. Data from one or more offset wells can be provided to a computer system and used with data from a well being drilled to generate one or more stratigraphic heat maps during the drilling of the subject well. The stratigraphic heat maps can be displayed and used to determine the location of the wellbore relative to one or more geological formations, including one or more target formations or within a target formation. Based on the use of the heat maps and the location of the wellbore relative to a target, the drill plan can be adjusted or updated and/or one or more drilling parameters or operations may be adjusted to drill the wellbore, such as to drill the wellbore to the target or to maximize the length of the wellbore within a target zone.
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公开(公告)号：WO2020142182A1
公开(公告)日：2020-07-09
申请号：PCT/US2019/066323
申请日：2019-12-13
申请人： DYNO NOBEL INC.
摘要： A blasthole guard may include a conduit and a cap. The conduit is sized and shaped to allow a hose to pass through. The cap comprises a funnel that narrows to an open end of the conduit. A slot continuously extends from the conduit through the cap such that the slot forms an opening that extends along an entire length of the device.
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公开(公告)号：WO2019213739A1
公开(公告)日：2019-11-14
申请号：PCT/CA2019/000066
申请日：2019-05-10
发明人： PURDY, Clay , WEISSENBERGER, Markus
摘要： A novel method for the placement of spearhead acid and stimulation of a hydrocarbon -bearing formation, said method comprising the steps of: providing a wellbore in need of multiple stages of stimulation; inserting an isolation plug in the wellbore at a predetermined location; inserting a perforating tool and a spearhead or breakdown acid into the wellbore simultaneously exposing the wireline and tool to the acid; positioning the tool at said predetermined location; perforating the wellbore with the tool thereby creating a perforated area; allowing the spearhead acid to come into contact with the perforated area for a predetermined period of time sufficient to prepare the formation for stimulation; removing the tool form the wellbore; and initiating the stimulation of the perforated area using a stimulation fluid.
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