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| Number | Title | Issue Date |
| 8118099 | Method and apparatus for forming and sealing a hole in a sidewall of a borehole A method for forming and sealing a hole in a sidewall of a borehole may include conveying a bit and a sealer into the borehole using a carrier, forming a hole in the sidewall using the bit, and introducing a sealant from the sealer to the hole along a surface portio... | 02/21/2012 |
| 8118098 | Flow control system and method for use in a wellbore A technique is provided to facilitate fluid flow and pressure control in a well with an interventionless flow valve system. The valve system is coupled to a well component string deployed downhole in a wellbore. The valve system controls flow and pressure between an... | 02/21/2012 |
| RE43054 | Method and apparatus for casing exit system using coiled tubing A system and method for setting an anchor and/or whipstock attached to a downhole motor having a cutting tool attached to a tubular member, such as coiled tubing. In one aspect, the motor allows flow therethrough sufficient to actuate an upstream MWD or other positi... | 01/03/2012 |
| 8066070 | Blowout preventers and methods of use Methods and apparatuses for severing a wellbore tubular, the apparatus, in certain aspects, including: a first member movable toward a tubular to be severed; a second member with a second blade disposed opposite to the first member and movable toward the tubular; a ... | 11/29/2011 |
| 8061426 | System and method for lateral wellbore entry, debris removal, and wellbore cleaning A method of servicing a wellbore comprises running a toolstring into a wellbore to a first depth, actuating a controllably rotating sub-assembly of the toolstring to rotate, and activating a pressure activated bendable sub-assembly of the toolstring to bend, wherein... | 11/22/2011 |
| 8056633 | Apparatus and method for removing subsea structures An apparatus and method for removing a subsea structure wherein a housing defining a subsea structure receiving space and having a jetting system attached at or near the bottom of the housing is used to form an excavation around the subsea structure to the desired d... | 11/15/2011 |
| 8047291 | Tool and method for abrasive formation of openings in downhole structures An abrasive slurry tool, the tool being attachable to a running string, the tool including a high-pressure assembly, the assembly including a nozzle assembly; and a low-pressure assembly in abrasive fluid communication with the high-pressure assembly, the low-pressu... | 11/01/2011 |
| 8033332 | Apparatus and method for perforating and fracturing a subterranean formation A device for perforating and fracturing a formation in a single trip includes shaped charges and a volume of a gas generator. When activated by detonation of the shaped charges, the gas generator forms a high-pressure gas, which includes steam, that expands to stres... | 10/11/2011 |
| 7971645 | Four mill bottom hole assembly Bottom hole assemblies for cutting windows in wellbore casing comprise a window mill, a first upper mill, a second upper mill, and a third upper mill. The first mill has an outer diameter that is smaller than the outer diameters of the window mill and the second and... | 07/05/2011 |
| 7963332 | Apparatus and method for abrasive jet perforating A abrasive jet perforating tool comprises a generally cylindrically shaped tube with a side, an upper portion, and a lower portion; a plurality of holes tapped and threaded into the side of the tube; threaded abrasive jets mounted in at least some of the plurality o... | 06/21/2011 |
| 7950457 | Method and apparatus for stimulating wells with propellants The present invention relates to apparatus and methods to stimulate subterranean production and injection wells, such as oil and gas wells, utilizing rocket propellants. Rapid production of high-pressure gas from controlled combustion of a propellant, during initial... | 05/31/2011 |
| 7918280 | Radial indexing communication tool and method for subsurface safety valve with communication component A communication tool apparatus is described which is adapted to provide selective communication of control fluid through a downhole tool, such as a safety valve. The downhole safety valve is a tubing retrievable subsurface safety valve (“TRSSSV”). The communicat... | 04/05/2011 |
| 7909100 | Reversible casing cutter Casing cutter for severing multiple tubulars in a well bore has a pair of cutter blades pivotally mounted on a support body. The blades are pivotally mounted for gradual movement outside of the support body when downward force is applied to proximate ends of the cut... | 03/22/2011 |
| 7905286 | Method and apparatus for sealing a hole made with a cased hole formation tester Apparatus and methods for forming and sealing a hole in the sidewall of a borehole are provided. The method may include conveying a carrier into the borehole, forming the hole in the sidewall using a bit, and sealing at least a portion of the hole by leaving at leas... | 03/15/2011 |
| 7900703 | Method of drilling out a reaming tool A reaming tool includes a tubular body having a nose portion with a concave center. A plurality of blades defining junk slots therebetween extend axially behind the nose portion and taper outwardly from the exterior of the tubular body. Rotationally leading edges of... | 03/08/2011 |
| 7900704 | Perforating torch apparatus and method A method of perforating a downhole pipe by cutting at a location within the pipe in a radial direction toward the pipe, producing a determined reaction force, and using the determined reaction force to enhance the cutting of the pipe. The method may include continui... | 03/08/2011 |
| 7878247 | Methods for cleaning out horizontal wellbores using coiled tubing Methods for cleaning out horizontal wellbores using coiled tubing are provided for use during downhole operations. A coiled tubing having a bottom hole assembly is deployed into a horizontal wellbore. Fluid is circulated down the annulus of the wellbore and up the b... | 02/01/2011 |
| 7849924 | Method and apparatus for moving a high pressure fluid aperture in a well bore servicing tool A well bore servicing apparatus comprising a housing having a longitudinal axis and a through bore, and a movable member disposed in said housing, said movable member having a through bore and a fluid aperture therein, wherein said movable member is movable between ... | 12/14/2010 |
| 7832481 | Fluid perforating/cutting nozzle The fluid perforating/cutting nozzle is configured to provide long life to the nozzle. The nozzle is composed of a cylindrical shaft defining a bore for the passage of cutting fluid and having inlet and outlet ends, a shank portion and a relatively large diameter sh... | 11/16/2010 |
| 7832480 | Apparatus and method for extracting a tubular string from a bore hole A tubular extraction system for use in a plug and abandonment process and may include a structural mounting for adaptation to a well head, various mountings may be used to provide a structure for attaching actuators for griping the tubular string, indenting or crimp... | 11/16/2010 |
| 7814979 | Blowout preventers and methods of use Methods and apparatuses for severing a wellbore tubular, the apparatus, in certain aspects, including: a first member movable toward a tubular to be severed; a second member with a second blade disposed opposite to the first member and movable toward the tubular; a ... | 10/19/2010 |
| 7810568 | Method of making a window in a tubular using an expandable watermelon mill A watermelon mill has a smaller dimension for run in and a larger one for reaming out the window made by a window mill and passes through a smaller drift and then gets larger for more effective widening of the window. The cutters are preferably tungsten carbide or p... | 10/12/2010 |
| 7793721 | Apparatus for radially expanding and plastically deforming a tubular member An apparatus and method for radially expanding and plastically deforming a tubular member. The apparatus includes a support member, an expansion device coupled to the support member and at least one of a cutting device coupled to the support member, an actuator coup... | 09/14/2010 |
| 7762330 | Methods of making multiple casing cuts Methods of removing casing from a wellbore, the method including disposing a drilling tool assembly in a wellbore, the drilling tool assembly including a cutting device, a spearing device, and a jarring device. The methods further including activating the cutting de... | 07/27/2010 |
| 7726401 | Casing exit joint with easily milled, low density barrier A casing exit joint with an easily milled and low density barrier. A casing exit joint for use in drilling a lateral wellbore outwardly from a parent wellbore includes a generally tubular window structure having a window formed through a sidewall of the structure. A... | 06/01/2010 |
| 7712532 | Energized fluids and pressure manipulation for subsurface applications Method and system for use in a subsurface formation traversed by a wellbore. An energized fluid, which when subjected to a low pressure environment liberates or releases gas from solution, is disposed in the formation. Reduced pressure in a region of the wellbore be... | 05/11/2010 |
| 7703526 | Apparatus and method for characterizing a reservoir An apparatus and method for characterizing a subsurface formation is provided. The apparatus includes a tool body, a probe assembly carried by the tool body for sealing off a region of the borehole wall, an actuator for moving the probe assembly between a retracted ... | 04/27/2010 |
| 7694740 | Communication tool and method for a subsurface safety valve with communication component A communication tool apparatus is described which is adapted to provide selective communication of control fluid through a downhole device such as a safety valve. The downhole safety valve is a tubing retrievable subsurface safety valve (“TRSSSV”). The communica... | 04/13/2010 |
| 7690428 | Perforating torch apparatus and method In cutting a downhole pipe in proximity to a closure in the pipe, the pipe is first perforated. A perforating torch is positioned with a pipe in proximity to the closure. The perforating torch produces cutting fluids in a first radial direction and produces an openi... | 04/06/2010 |
| 7686083 | Method and apparatus for cutting off a well A method and apparatus for cutting off a well which includes hydraulic rams, a sharp blade and a supporting structure that surrounds the well and holds it in place while the hydraulic rams and sharp beveled blade shears the well and cuts it off. The entire apparatus... | 03/30/2010 |
| 7644763 | Downhole cutting tool and method Disclosed herein is a downhole cutting tool. The downhole cutting tool including, a cutting member mounted on a rotatable shaft, a shaft-deflecting device in operable communication with the shaft, and a motor in operable communication with the shaft. ... | 01/12/2010 |
| RE41059 | Expandable wellbore junction Multiple wellbores are interconnected utilizing a deflection device having a guide layer of lower hardness than the body of the deflection device, and a cutting tool having a guide portion and being operative to cut through the deflection device guide layer and a tu... | 12/29/2009 |
| 7628205 | Optimized machining process for cutting tubulars downhole The tubular cutter disclosed herein is useful for severing downhole tubulars and comprises a drive system, a pivoting system, a cutting head, and a cutting member. Cutting is accomplished by rotatingly actuating the cutting head with an associated motor, and then ra... | 12/08/2009 |
| 7621332 | Apparatus and method for perforating and fracturing a subterranean formation A device for perforating and fracturing a formation in a single trip includes shaped charges and a volume of a gas generator. When activated by detonation of the shaped charges, the gas generator forms a high-pressure gas, which includes steam, that expands to stres... | 11/24/2009 |
| 7617871 | Hydrajet bottomhole completion tool and process Of the many assemblies and methods provided herein, one assembly includes a conduit adapted for installation in a well bore in a subterranean formation; one or more fluid jet forming nozzles disposed about the conduit; and one or more windows formed in the conduit a... | 11/17/2009 |
| 7617872 | System and method for perforated well sand control In one embodiment, a system includes a cased wellbore disposed in a formation of interest. The system includes an emulsion positioned in the wellbore at a depth of the formation of interest. The emulsion includes an oil external phase and an aqueous internal phase. ... | 11/17/2009 |
| 7581591 | Production casing ripper A production casing ripper comprising a swedge; spring housing; coupling; main housing; end piece; blade; and means for connecting the blade to the plunger; wherein the blade is situated inside of the main housing; wherein a plunger is situated inside of the main ho... | 09/01/2009 |
| 7575056 | Tubular cutting device The pipe cutter disclosed herein is useful for severing downhole tubulars and comprises a drive system, a pivoting system, a cutting head, and a cutting member. Cutting is accomplished by rotatingly actuating the cutting head with an associated motor, and then radia... | 08/18/2009 |
| 7571769 | Casing window milling assembly Casing window milling assemblies include a conically-shaped section disposed along the tubular of the assembly. This conically-shaped section is a non-cutting portion that is preferably tapered toward the mill head. The conically-shaped section may be part of a flex... | 08/11/2009 |
| 7568525 | Method and system for increasing well rate using well-capital-string perforation The method of wells production rate increase which includes lowering the hydroperforator equipped with hydromonitor nozzles into the well on the pipe string; pumping liquid with abrasive material under pressure into the pipe string and hydroperforator; impacting the... | 08/04/2009 |