Patent application number | Description | Published |
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 |
20090200012 | 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 |
20100096122 | Wellbore Cleaning Devices - Non-rotating tubular wellbore cleaning devices are described which include a central tool mandrel with radially surrounding stabilizers and a cleaning member subassembly. A rotational bearing is provided that is partially radially recessed, thereby improving the overall strength of the cleaning device. | 04-22-2010 |
20100270030 | FULL FUNCTION DOWNHOLE VALVE - Downhole valves comprise a housing having a bore, a port, upper and lower recesses disposed in an inner wall surface of the bore, the upper recess disposed above the port and the lower recess disposed below the port, and upper and lower pistons disposed in the bore. The upper and lower pistons each comprise a bore with a port in communication with housing bore. During run-in, the housing port is blocked by the lower piston. Actuation of the lower piston unblocks the housing port and aligns the lower piston port with the lower recess. Actuation of the upper piston closes the housing port and aligns the upper piston port with the upper recess. Alignment of the ports of the pistons with their respective recesses permits fluid flow through the tool both when the valve is opened by the lower piston and closed by the upper piston. | 10-28-2010 |
20110049025 | Debris Catcher with Retention within Screen - A debris catcher uses induced circulation from a venturi to urge debris laden flow into the lower end of a housing. An inlet tube maintains velocity so as to keep the debris moving with the fluid stream as it goes up the inlet tube. A screen fits over the open end of the inlet tube and runs down around the inlet tube toward the entrance of the debris laden fluid into the lower end of the housing. There is a clearance around the cylindrical portion of the screen so some flow can exit that way. There is also an open exit through the top of the screen that can be reached after the fluid stream makes two hairpin turns. Many modules can be stacked. Each module has a large screen area for flow to exit and progressive modules can have smaller screen openings in an uphole flow direction. | 03-03-2011 |
20110186287 | Cleaning Device - A cleaning device for use in cleaning wellbores and other tubular members in subterranean fluid production operations. The cleaning device includes a tool mandrel with cleaning components, such as a scraper assembly and stabilizers, secured thereupon with an attaching ring assembly. The attaching ring assembly includes a housing and a plurality of locking wedges that are movable with respect to the housing. | 08-04-2011 |
20110265988 | Wellbore Cleaning Devices - A wellbore cleaning device having a unitary tool mandrel surrounded by a retaining sleeve that is rotatable with respect to the mandrel. A locking ring is used to secure the retaining sleeve to the mandrel. Cleaning blades are retained within recesses in the retaining sleeve and are biased radially outwardly from the recesses by springs. | 11-03-2011 |
20110284203 | Downhole Magnetic Retrieval Devices with Fixed Magnetic Arrays - A magnetic retrieval tool used for collecting metallic debris and material from within a wellbore or other surrounding downhole tubular. The tool includes a tool mandrel with one or more pockets formed in its outer radial surface. A removable insert resides within each pocket. Each of the inserts retains a plurality of individual magnets in a fixed array or matrix surrounding the mandrel. | 11-24-2011 |
20110284210 | Dual-Pole Magnetic Attraction Downhole Magnetic Retrieval Apparatus - A magnetic retrieval tool used for collecting metallic debris and material from within a wellbore or other surrounding downhole tubular. The tool includes a tool mandrel with a removable insert which contains one or more magnets. The insert is formed such that both the north and south magnetic poles of the one or more magnets are able to attract metallic debris. | 11-24-2011 |
20120305249 | METHOD AND SYSTEM FOR ABANDONING A BOREHOLE - A method of abandoning a borehole includes, running a tool into the borehole, cutting a casing with a first portion of the tool, reaming the borehole in an area where the casing has been cut with a second portion of the tool, disconnecting a drillstring from the tool, and cementing the borehole through the drillstring | 12-06-2012 |
20130112397 | Spiral Whipstock for Low-Side Casing Exits - A whipstock features a spiral ramp so that, in a horizontal run, access to a milled window with other tools is not impeded because such tools can traverse onto the ramp and still be directed to the window. Angular rotation of the ramp can be at 180° or more and the pitch is selected to avoid getting the equipment being advanced into a bind. Optionally, a guide track can be configured into the whipstock ramp to help the mill follow the spiral path until the proper orientation is obtained and the track ends to allow separation of the mill from the track. A slot can be provided near the ramp upper end to aid in retrieval operations. | 05-09-2013 |
Patent application number | Description | Published |
20100307826 | ROD CHANGER FOR A ROCK DRILL - A rock drill system includes a rotatable carousal adapted to hold a plurality of drill rods. A carousal driver is in communication with the rotatable carousal. The carousal driver includes a driver gear and a driven gear. Both the driver gear and the driven gear are coated with a self-lubricating/anti-corrosive layer comprising a metal-containing composition and a fluorine-containing resin. The rock drill system also includes a rod gripper for positioning a drill rod under a rock drill. Another rock drill system of similar design is provided in which the rod gripper includes one or more pivot pins that are coated with a self-lubricating/anti-corrosive layer comprising a metal-containing composition and a fluorine-containing resin. | 12-09-2010 |
20110147092 | HOSE TENSIONER FOR A ROCK DRILL SYSTEM - A rock drill system may include a support arrangement including a feed channel, a rock drill assembly movably associated with the feed channel, and a fluid conductor having a first end connected to the rock drill assembly and a second end associated with the support arrangement. The system may further include a tensioning arm pivotally coupled to the support arrangement, wherein the tensioning arm is engageable with the fluid conductor to tension the fluid conductor. | 06-23-2011 |
20110198130 | ARTICULATED PRE-SKIMMER MOUNT - An articulated pre-skimmer mount for a pre-skimmer associated with a drill bit feed unit comprises a feed mounting arm mounted to the drill bit feed unit. A first end is configured for attachment to the drill feed unit and a second end includes a cylindrical mounting shaft and an axial positioning plate. An intermediate arm has a first end comprising a cylindrical sleeve mounted thereto. The cylindrical sleeve has an inner cylindrical opening configured for sliding engagement with the cylindrical mounting shaft and a mating plate configured for locking, face-to-face engagement with the axial positioning plate. A second end comprises a pre-skimmer mounting assembly configured for attachment to the pre-skimmer, wherein an axial positioning plate and a mating plate are operable to disengage, for rotation of the intermediate arm about an axis of the feed mounting arm for alignment of the pre-skimmer. | 08-18-2011 |
20110219917 | BREAKOUT WRENCH SYSTEM - A breakout wrench for use with a rock drill string includes a frame adapted for mounting to a rock drill feed guide structure, and a sub-frame rotatably connected to the frame about a drill string longitudinal axis. The sub-frame supports a pair of jaw members adapted for radial movement towards and away from one another and to releasably engage a first section of a drill string. The breakout wrench also includes a clamping member supported by the rock drill feed guide structure. The clamping member is adapted to releasably engage a second section of the drill string spaced axially from the first section. | 09-15-2011 |
20110222801 | WEAR PAD ADJUSTMENT ASSEMBLY - A cam assembly is provided for adjustment of a drill feed guide wear pad. The cam assembly has an eccentric bushing with a shank portion extending circumferentially about a first axis and defining a bore along a second axis. The second axis is generally parallel and offset from the first axis. The bushing has a head portion extending from the eccentric bushing portion, with the bore extending though the head portion. The bushing is sized for insertion into an aperture of a drill feed guide wear pad, and is rotatable causing the shank portion to engage the aperture of the wear pad to provide a camming action to position the wear pad relative to a drill feed guide. The head portion is shaped to interact with a tool for rotating the bushing. | 09-15-2011 |
20110297446 | TRAVELING AND LOCKING CENTRALIZER - A drill system for use with a drill rod includes a support member, and a drill assembly movably associated with the support member and configured to be connected to the drill rod. The system further includes a centralizing device movably associated with the support member and configured to receive the drill rod. The centralizing device includes a movable jaw and a latch arm connected to the jaw and configured to move the jaw between an open position and a closed position for retaining the drill rod. Furthermore, the latch arm has a locking feature configured to hold the latch arm in a locked position to thereby hold the jaw in the closed position. | 12-08-2011 |
20140060932 | MEDIA PRESSURE CAVITATION PROTECTION SYSTEM FOR ROCK DRILLS - A drilling apparatus has a chassis and a feed beam. The feed beam includes a rock drill hammer, a moveable drill string, a rock drill system coupled to the feed beam, a media pressure system coupled to the rock drill system, and a sensor system. The media pressure system includes a high pressure supply path, a low pressure return path, a control valve coupled to the high pressure supply path, at least one accumulator, and a sensor system. The sensor system includes a pressure transducer coupled to the high pressure supply path, the low pressure return path, or the accumulator to supply pressure data, a control unit configured to monitor and compare the pressure data to an acceptable pressure range stored in memory, and a warning apparatus configured to alert the operator of a pressure outside of the predetermined acceptable pressure range. | 03-06-2014 |
20140262395 | DRILLING APPARATUS - A drilling apparatus includes a percussive member configured to generate impact waves, a striking bar configured to receive impact waves from the percussive member, a rotation section at least partly enclosing the striking bar, a flushing section detachably connected to the rotation section, and a vibration isolator attached to the flushing section. The rotation section includes a bearing configured to support the striking bar. Further, the flushing section includes an inlet passage configured to receive a flushing medium. | 09-18-2014 |
20140376847 | BEARING ASSEMBLY FOR ROCK DRILL - A bearing assembly for a rock drill includes a housing and a bearing. The housing includes a cylindrical tail portion and a head portion having a multi-sided outer surface configured to inhibit a rotation of the bearing assembly relative to the rock drill. The bearing is positioned within the housing and configured to receive a rotatable component of the rock drill. | 12-25-2014 |