Class / Patent application number | Description | Number of patent applications / Date published |
166550600 | Cutter rotates circumferentially of pipe | 23 |
20100294477 | Auxiliary Conduit Cutting Apparatus - A cutting assembly for external conduits on a tubing string features a breakaway in the string that can be severed with a tensile force. Preferably each external conduit is run through a cutter housing. Upon severing of the string and applying a pickup force, a tension is applied to each external conduit since the severing of the string happens above all the cutter housings. Each housing cuts at least one conduit and the upper portion of the string brings with it the upper portion of the external conduit while the lower portions of each cut external conduit are retained in the cutter housings that remain downhole below the breakaway. In that manner there are no loose external conduit ends to interfere with and/or disturb subsequent fishing or other wellbore operations. | 11-25-2010 |
20100294478 | Auxiliary Conduit Cutting Apparatus - A cutting assembly for external conduits on a tubing string or main tubular conduit features at least one breakaway in the string that can be severed with a tensile force. Preferably each external conduit is run through a cutter housing that is integral with a passage having threaded end connections. While in some scenarios it is preferred that the main tubular conduit is severed below the cutting assembly thus allowing the cutting apparatus to be retrieved with the upper portions of the cut main tubular conduit and external longitudinal member(s), in other circumstances it may be desired that the main tubular conduit is severed above the cutting assembly allowing the cutting apparatus to be left “downhole” with the lower portion of the cut main tubular conduit and the BHA. The cutter knife assembly chambers or channels can be in banks that are axially spaced using bypass channels to access lower banks. The cutter knife assembly and associated channels can be mirror images so that the external conduits can be cut regardless of where the tubing string is severed and one or more conduits can be cut with a single cutter assembly. | 11-25-2010 |
166550700 | Internal | 21 |
20090050310 | Combination Motor Casing and Spear - A wellhead removal tool features a rotary cutter run by a Moyno type progressive cavity pump that is powered by fluid pumped through it. The stator of the motor has a gripping device with a series of collets or slip inserts that have grip features that face outwardly. A support shoulder on the grip assembly cooperates with a j-slot connection to the stator to allow a cone to be moved under the collets to push them into a grip position below or in a selected portion of the wellhead where the grip will not damage the wellhead internal components. Fluid pumped through the downhole motor causes the casing cutter blades to extend and rotate to cut the casing. The grip allows the wellhead to be lifted away from the casing for recovery from the sea bed to surface. The grip can be retracted by use of the j-slot to allow the tool to be removed from the wellhead. | 02-26-2009 |
20090078402 | Tubular Cutting Device - The casing cutter disclosed herein is useful for severing downhole tubulars and comprises a body, a cutting head, cutting blades, and actuators for operating the cutting head and cutting blades. Cutting is accomplished by rotatingly actuating the cutting head with an associated motor, and then radially extending the cutting blades away from the cutting head. In one embodiment, the cutting head includes a cutting member that pivotally extends from the cutting head upon rotation of the cutting head. In another embodiment, cutting members extend from the cutting head due to centrifugal forces associated with rotating the cutting head. | 03-26-2009 |
20090200010 | Downhole Debris Catcher and Associated Mill - A debris catching device for downhole milling features modular debris receptacles that are held in the housing in a manner that facilitates stacking and a generally undulating flow path to facilitate dropping of the debris into the receptacles as the remaining fluid travels up the tool for ultimate screening before the fluid exits the tool to flow up to the surface or in a reverse circulation pattern back to the mill below the debris catcher. The modules can also be aligned with flapper valves at the top of each module to prevent debris in the tool from falling to the mill if circulation is turned off. The mill is configured to have an off-center return path preferably as large as the passage through the mill body to aid circulation and cutting performance. | 08-13-2009 |
20100065264 | Rotor underreamer, section mill, casing cutter, casing scraper and drill string centralizer - A down hole well bore apparatus to underream and remove rock or cement or other material, cut or mill casing, clean or scrape casing, or centralize a drill string, which has a rotor which actuates blades, a compact overall length and can be operated with normal or reverse circulation. Simultaneous operations or multiple sequential operations can be made without removing the drill string. | 03-18-2010 |
20100258289 | Slickline Conveyed Tubular Cutter System - A tubular cutter is run in on slickline. It features onboard power to selectively actuate an anchor and to initiate a tubular cutting operation with a cutter that is extendable and rotatable on its axis and the axis of the tool that carries an on board power supply. | 10-14-2010 |
20110174477 | Full Gauge Milling Bottom Hole Assembly with Optimal Contact Force and Build Rate Capability - A milling bottom hole assembly (BHA) for use in cutting a full gauge window in a wellbore casing wall, the resultant length of the window being greater than or equal to the whipstock ramp length. A milling BHA is described which includes two shaft portions, a window mill and two bearing mills. The design, which involves strategically placed bearing mills, allows the milling BHA to stay on the whipstock ramp for the entire casing window milling operation and, thereafter, to optimally rapidly build angle and move laterally away from the whipstock and casing, creating a significantly long window which allows for easy passage of directional drilling BHAs through the milled window. | 07-21-2011 |
20130037256 | Rotary Shoe Direct Fluid Flow System - The circulation system for a rotary shoe features a fluid diversion to a peripheral zone from which the flow is directed by tubes or housing bores to the vicinity of the cutting structure to improve cooling and removal of debris. Some of the fluid is directed straight through into the mandrel of the tool being milled. If the formation below is at low pressure a packer cup is added to the grip tool attached to the shoe at one end and to the fish at the other end. A swivel is used to prevent the packer cup rotation. Fluid diverted by the packer cup comes up out of the mandrel and into an annular space between the mandrel and the inner wall of the shoe and out from under the shoe by flowing past the cutters. Fluid loss to the formation is minimized and cooling and cutting removal is enhanced. | 02-14-2013 |
20140332200 | Wellbore Casing Cutting Tool - A wellbore casing cutting tool, having multiple blades which rotate outwardly by a fluid operated mechanism, has multiple cutters on each blade. The cutters are preferably positioned on the blades such that the lowermost cutting edges of multiple cutters all bear on the surface of the casing being cut. The cutters are preferably made with a metal base, covered with hardened cutting material such as tungsten carbide or hardened cutting buttons. The metal wears away as cutting progresses, continually exposing fresh cutting surfaces. The multiple cutters permit cutting of long windows in casing walls, and the structure of the cutters results in relatively short metal cuttings, rather than long metal cuttings which can ball up downhole. | 11-13-2014 |
20150053391 | RADIALLY EXPANDABLE STABILIZER - A downhole tool includes a radial expansion assembly deployed about, and configured to rotate substantially freely with respect to, a tool mandrel. The expansion assembly includes at least one stabilizer block configured to extend radially outward from the mandrel into contact with a wellbore casing string. When deployed between uphole and downhole cones, the stabilizer block includes a plurality of angled splines configured to engage corresponding splines on the cones. Relative axial motion between the stabilizer block and the cones causes a corresponding radial extension or retraction of the stabilizer block. | 02-26-2015 |
20160115755 | METHOD AND APPARATUS FOR PROGRAMMABLE ROBOTIC ROTARY MILL CUTTING OF MULTIPLE NESTED TUBULARS - A methodology and apparatus for cutting shape(s) or profile(s) through well tubular(s), or for completely circumferentially severing through multiple tubulars, including all tubing, pipe, casing, liners, cement, other material encountered in tubular annuli. This rigless apparatus utilizes a computer controlled, downhole robotic three-axis rotary mill to effectively generate a shape(s) or profile(s) through, or to completely sever in a 360 degree horizontal plane wells with multiple, nested strings of tubulars whether the tubulars are concentrically aligned or eccentrically aligned. This is useful for well abandonment and decommissioning where complete severance is necessitated and explosives are prohibited, or in situations requiring a precise window or other shape to be cut through a single tubular or plurality of tubulars. | 04-28-2016 |
20160201416 | Clad Hardfacing Application on Downhole Cutting Tools | 07-14-2016 |
20160251924 | CUTTING TOOL | 09-01-2016 |
20160251925 | CUTTING TOOL | 09-01-2016 |
20190145208 | METHOD FOR CUTTING A TUBE OR PIPE | 05-16-2019 |
20190145210 | DOWN WELL PIPE CUTTING DEVICE | 05-16-2019 |
166550800 | Tool moved radially by fluid pressure | 6 |
20100012312 | THROUGH TUBING PERFORATING GUN - An apparatus for perforating wells having a plurality of perforating charges; means for retaining the perforating charges in a first array, the first array having a first maximum cross sectional area; and means for expanding the perforating charges into a second three dimensional array, the second array having a second maximum cross sectional area larger than the first maximum cross sectional area. Also an apparatus for perforating wells having a plurality of perforating charges; means for retaining the perforating charges in a first array, the first array having a primary axis and a first maximum cross sectional area and the perforating charges having firing directions oriented approximately perpendicular to the primary axis; and means for expanding the perforating charges into a second array, the second array having a second maximum cross sectional area larger than the first maximum cross sectional area. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. | 01-21-2010 |
20130168076 | Milling Tool - A milling tool for enlarging portions of a wellbore. The milling tool includes a housing that defines a central bore along its length. A piston is moveably disposed within the central bore, and axial movement of the piston moves support arms radially outwardly from the housing. The support arms carry milling blades for enlarging portions of a wellbore. | 07-04-2013 |
20130192815 | DEVICE FOR DRILLING THROUGH A FORMATION - In order to reduce the risk of accidents in mechanically drilling through a stratum and to expand the range of applications of the device for drilling through a stratum, the invention provides that the control elements which ensure the in-feeding of the cutting rod and the return of the device to the position for being transported by means of interacting the ball-and-socket joint with the control bushing and the body—are embodied as two-stage figure projections on the lateral truncations of the ball-and-socket joint, which cooperate with cutouts in the control bushing and the body; and the line of pipes and the hydraulic motor of the suspension and of the pivot point are optionally replaced by a cable and by an electric motor combined with a hydraulic pump. | 08-01-2013 |
20130292108 | Oilfield Downhole Wellbore Section Mill - A section mill features extendable cutting blades and centering blades that are pressure actuated for sequential extension of the centering blades before the cutting blades. Applied pressure results in flow through a flow restriction that creates a force on return springs associated with the centering and the cutting blades. The springs allow extension of the centering blades before the cutting blades. Another spring returns a mandrel to the run in position on cessation of flow. The blades are extended or retracted with a rack and pinion drive system. | 11-07-2013 |
20150129195 | Retractable Cutting and Pulling Tool with Uphole Milling Capability - Cutter blades extend and stay extended as long as pressure on a piston is continued. The blades either open fully in open hole or cut through the wall of a tubular and then mill in an uphole direction to take out a piece of the tubular. The piston that held out the blades when pressure was applied is acted on by a return bias when the pressure is removed so that the blades can retract and the tool removed through the cut tubular. As a backup a plug can be dropped to obstruct a through passage in the piston so that pressure from the surface can be used to force the piston back to retract the blades. Continued drilling operations or the cut and milled portion can be then blocked off such as with cement for a plug and abandonment of the well. | 05-14-2015 |
20160017698 | DOWNHOLE TOOL FOR GUIDING A CUTTING TOOL - An apparatus is disclosed that includes a guiding tool for transferring fluid pressure to movement of a cutting tool relative to the guiding tool while the cutting tool is cutting slots in a casing or formation via at least one nozzle disposed in the cutting tool. Furthermore, a method of cutting a slot in a casing or formation using the apparatus is disclosed. | 01-21-2016 |