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公开(公告)号：US20240247562A1
公开(公告)日：2024-07-25
申请号：US18625818
申请日：2024-04-03
发明人： Kyle Craker , Logen Kanngiesser
CPC分类号： E21B33/1208 , E21B29/002 , E21B43/26
摘要： A plug used in the hydraulic fracking of hydrocarbon wells. The plug, known as a frac or bridge plug, contains one or more containers housing a chemical substance such as a solid, liquid, or gel composition. The composition may constitute or include a cleaning agent, friction reducer, suspending agent, or other wellbore additive. For example, the composition may constitute or include epoxy components, resins, thermoplastics, dry add friction reducers, dry add gel, dry add pipe on pipe, similar agents, or any combination thereof. The containers can include the same chemical substance or a variety of chemical substances. During drill out of the plug, the containers rupture and release the chemical substance into the wellbore. The released chemical substance, if a cleaning agent, assists in the cleaning of the milled-plug pieces from the wellbore.
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公开(公告)号：US20240076956A1
公开(公告)日：2024-03-07
申请号：US18243463
申请日：2023-09-07
申请人： BiSN Tec Ltd.
发明人： Jake Dearmon , Matt Naylor
CPC分类号： E21B36/008 , E21B29/002 , E21B33/1208
摘要： The present invention provides a tool assembly system for use in a single trip downhole operation in which an alloy plug/seal is set and then at least partially milled through. The system comprises a tubular chemical heater with a mill that has at least one flow port and a tubular mandrel arranged on the outside of the heater at up-hole and down-holes ends of the heater respectively and whereby the heater is removably retained within the mandrel so that the mill can be subsequently repositioned to work on the mandrel once the alloy plug/seal has been formed. The present invention also provides an associated method of forming an alloy plug/seal and milling it at least partially through in a single trip.
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公开(公告)号：US11905789B2
公开(公告)日：2024-02-20
申请号：US17829847
申请日：2022-06-01
发明人： Randall S. Shafer
IPC分类号： E21B33/134 , E21B33/12 , E21B29/02 , E21B29/00
CPC分类号： E21B33/134 , E21B29/002 , E21B29/02 , E21B33/12
摘要： A method for creating access to annular spacing during P&A operations is described. Specifically, helical coils are cut into one or more casings before the plugging material is set. The plugging material is able to exit the helical coils, forming multiple, small rock-to-rock seals.
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公开(公告)号：US20230349264A1
公开(公告)日：2023-11-02
申请号：US17732948
申请日：2022-04-29
申请人： BiSN Tec Ltd.
发明人： Paul Carragher , Didhiti Talapatra , Billy Clark
CPC分类号： E21B41/00 , E21B43/10 , E21B29/002 , E21B33/10 , E21B36/008
摘要： Methods to repair leaking liner hangers and/or drop off liner assemblies utilizing heaters to melt metal alloys which will solidify and form an annular seal at the liner hanger and seal the leak. Such methods may be used in numerous liner hanger environments, including but not limited to, well bores with and without tieback assemblies.
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公开(公告)号：US20230349254A1
公开(公告)日：2023-11-02
申请号：US18308424
申请日：2023-04-27
CPC分类号： E21B29/002 , E21B23/01 , E21B33/13
摘要： A section milling tool includes an electrically operated section mill configured to mill without conveying swarf to surface, an electric motor operably connected to the section mill, an electric stroker operably connected to the motor, and an electric anchor operably connected to the stroker. A method for section milling a downhole structure without conveying swarf to surface includes running a bottom hole assembly (BHA) on a wireline, deploying an anchor, rotating a section mill, and stroking the section mill with a stroker. A method for reducing emissions during a section milling operation includes running a tool on wireline, and milling a tubular structure in the borehole. A method for plugging and abandonment of a well includes running a tool on wireline, milling a tubular structure in the borehole, and plugging the well at the milled tubular structure.
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公开(公告)号：US11781392B2
公开(公告)日：2023-10-10
申请号：US17392826
申请日：2021-08-03
IPC分类号： E21B29/00 , E21B33/134
CPC分类号： E21B29/00 , E21B29/002 , E21B33/134
摘要： An integrated milling and production device. The device includes a production housing, a connector, a motor, and a milling bit. The production housing has a central bore with at least one flapper valve pivotally disposed therein and an actuator. Upon completion of milling operations, the connector may be disengaged from the production housing. The production housing may be repositioned in the well. Activation of the actuator permanently opens the flapper valve to permit the flow of production up the production housing to the well surface. The actuator may be a piston.
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公开(公告)号：US20190211641A1
公开(公告)日：2019-07-11
申请号：US16356042
申请日：2019-03-18
申请人： Terydon, Inc.
发明人： Terry D. Gromes, SR.
IPC分类号： E21B29/00 , E21B43/114
CPC分类号： E21B29/002 , B24C3/325 , B24C7/0007 , E21B43/114
摘要： A cutting head assembly uses multiple cutting heads directing ultra-high pressure fluid in different directions towards an inner surface of a pipe to be cut in order to complete a full cut of the pipe while rotating or revolving the multiple cutting heads less than 360 degrees relative to central axis. The ultra-high pressure fluid mixes with abrasive inside fittings on or near each of the nozzles to further assist with cutting through the pipe. Some cutting head assemblies have two nozzles, while other cutting head assemblies have three or four nozzles.
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公开(公告)号：US20170328159A1
公开(公告)日：2017-11-16
申请号：US15533086
申请日：2015-12-08
发明人： Lasse Haugland , Martin Spinnangr
IPC分类号： E21B29/00
CPC分类号： E21B29/005 , E21B29/002
摘要： This invention relates to a cutting unit for a well pipe. The cutting unit includes a tool housing axially displaceable and rotatable in the well pipe, arranged in the tool housing at least one cutting tool displaceable in a radial direction, the unit connected to a rotary adapter for rotation around a center axis, and the tool housing provided with a leading end portion and a coupling portion, the leading end portion being conical, sloping towards the center axis and away from the coupling portion; and the cutting unit provided with an elongated springable tool mount with a first end portion, a second end portion and a resilient portion between first end portion and second end portion, elongated tool mount positioned in an external recess in the tool housing, and the second end portion positioned at the leading end portion, and the tool mount tensioned towards the center axis; a sleeve positioned around the coupling portion, the first end portion attached to the sleeve; at least one shear body fixing the sleeve to the tool housing; an internal first bevel on the second end portion of the tool mount; a cutting unit attached to the second end portion on the opposite side of the internal first bevel; and a push rod connected to a cone body, cone body resting against the first bevel.
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公开(公告)号：US09745813B2
公开(公告)日：2017-08-29
申请号：US14727609
申请日：2015-06-01
CPC分类号： E21B29/02 , E21B17/1078 , E21B29/002 , E21B29/005
摘要： Systems and methods usable in conduit cutting operations are disclosed. Specifically, an anchor assembly is configured to be attached to a cutting apparatus and to equalize the upward and downward forces on the cutting apparatus during performance of the cutting operation. In addition, the anchor assembly is configured to impart a rotational motion in the cutting apparatus to produce a clean and complete horizontal cut of the conduit at a desired location.
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公开(公告)号：US20170218705A1
公开(公告)日：2017-08-03
申请号：US15014317
申请日：2016-02-03
申请人： Chimere Nkwocha
发明人： Chimere Nkwocha
CPC分类号： E21B4/02 , E21B7/203 , E21B10/26 , E21B17/14 , E21B29/002
摘要： A reaming assembly having an inner mandrel including spiral lobes disposed on an outer surface thereof. The inner mandrel is hollow and is sized large enough to freely pass a standard drill bit therethrough. The reaming assembly includes an outer mandrel disposed around the inner mandrel and includes spiral lobes disposed on an inner surface of the outer mandrel. The outer mandrel has a number of spiral lobes equal to the number of spiral lobes of the inner mandrel plus one. The reaming assembly includes a spacing between the outer surface of the inner mandrel and the inner surface of the outer mandrel through which fluid is pumped to generate torque therebetween; wherein at least one of the inner and outer mandrel is free to rotate.
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