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7775279 Debris-free perforating apparatus and technique  
An apparatus that is usable with a well includes a perforating system that is adapted to be fired downhole in the well. The perforating system includes a component, which includes an alloy that...
7757763 ***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Casing deformation and control for inclusion propagation
 
Casing deformation and control for inclusion propagation in earth formations. A method of forming at least one inclusion in a subterranean formation includes the steps of: installing a liner...
7757767 Through tubing gun lock  
A lock for a perforating gun system comprising, a housing, a cylinder formed in the housing, a piston assembly disposed within the cylinder, and anchoring arms coupled with the piston assembly....
7753121 Well completion system having perforating charges integrated with a spirally wrapped screen  
An assembly that is usable with a well includes a base pipe, a screen and at least one perforating charge. The base pipe includes at least one radial port to communicate well fluid, and the base...
7735578 Perforating system with shaped charge case having a modified boss  
A perforating gun having a charge case with a boss element partially circumscribing Optionally the pair of bosses may be included that are substantially symmetric about the axis of the charge...
7726392 Removal of downhole drill collar from well bore  
A drill string in a borehole can be cut at the drill collars. A torch is lowered into the drill string and positioned at a joint of the drill collar string. The joint has a pin component and a box...
7703507 Downhole tool delivery system  
An apparatus for use in deployment of downhole tools is disclosed. Preferably, the apparatus includes at least an in-ground well casing, a housing providing a hermetically sealed electronics...
7703525 Well perforating and fracturing  
A system and method for perforating and fracturing enables sealing device on a working string to be actuated to substantially block passage of fluids through the wellbore. Without removing the...
7665535 Rigless one-trip system and method  
A one-trip system for use in a subterranean well includes a tubing hanger, a production tubing, a perforating gun assembly and a screen assembly. The tubing hanger is adapted to be mounted to one...
7661366 Signal conducting detonating cord  
A downhole perforating device includes: a perforating gun having incorporated therein at least two shape charges; an elongated detonating cord incorporated with the perforating gun and extending...
7650947 One trip system for circulating, perforating and treating  
A well completion method and apparatus comprises a pipe string having a bottom attached boring bit and scraper. Above the bit at designated well fluid production locations, perforation assemblies...
7640982 Method of injection plane initiation in a well  
Initiation of injection planes in a well. A method of forming at least one generally planar inclusion in a subterranean formation includes the steps of: expanding a wellbore in the formation by...
7640986 Device and method for reducing detonation gas pressure  
A perforating gun has a gun carrier extending in a longitudinal direction and a loading tube located within the gun carrier. The loading tube extends in the longitudinal direction and a shape...
7640983 Method to cement a perforated casing  
The invention discloses a method of treating a zone of a well comprising a wellbore, a tube which is permeable to settable material, said tube forming an annulus with the wellbore; and wherein...
7635027 Method and apparatus for completing a horizontal well  
A firing head assembly has a sealed chamber containing a piston, a firing pin, and an impact detonator. The firing head assembly and a perforating charge are installed within a sub and the sub is...
7635021 Downhole cutting tool using a single piece tubular with a radially displaceable portion  
Disclosed herein relates to a single piece tubular member. The tubular member having a non-radially displaceable portion and a radially displaceable portion, the radially displaceable portion...
7621331 Fluid communication nipple having an interior passageway with an interior wall section that may be opened to establish fluid communication with the passageway  
A fluid communication nipple including a tubular mandrel having an interior surface defining an internal bore and a passageway extending substantially lengthwise along a portion of the mandrel....
7610969 Perforating methods and devices for high wellbore pressure applications  
A carrier tube for use in a wellbore perforating gun has inner and outer layers selected from materials of different, comparative physical properties. The inner layer has a higher compressive...
7600568 Safety vent valve  
A perforating system connection sub comprising a vent valve for providing fluid flow communication through the connection sub wall. The vent valve is selectively opened and may include a frangible...
7588084 Method for releasing cables from an attached well tool and apparatus for exercising the method  
In a method for releasing cables (2) from an attached well tool, where the cutting and the time for cutting can be decided from the surface above the well, and where a cable cutter (6) is arranged...
7575060 Collapse resistance of tubing  
A method of increasing the collapse resistance of a tubular comprises locating a tool having at least one, and typically three, bearing members within a tubular. The bearing members are positioned...
7571766 Methods of fracturing a subterranean formation using a jetting tool and a viscoelastic surfactant fluid to minimize formation damage  
A method of fracturing a production interval of a subterranean formation adjacent a wellbore that is open hole or has an uncemented liner is provided. The method comprises the steps of: (a)...
7565930 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...
7565927 Monitoring an explosive device  
An explosive device includes a housing, and at least one of an initiator and an explosive in the housing. The at least one of the initiator and explosive are activatable in response to stimulus...
7552772 Locating recess in a shoe for expandable liner system  
An apparatus to protect the mounting area of casing when subsequently attaching a tubular is disclosed. A sleeve that defines a sealed cavity having a loose incompressible material inside covers...
7546875 Integrated sand control completion system and method  
An integrated sandface completion tool that can be positioned within a wellbore in a single trip and a method of providing a sandface completion in a wellbore. An embodiment of the integrated...
7540326 System and method for well treatment and perforating operations  
A technique is provided to facilitate perforation operations in a well. A well treatment operation is combined with a perforating operation to increase the efficiency of well preparation. A dart...
7536942 Explosive pipe severing tool  
A pipe severing tool is arranged to align a plurality of high explosive pellets along a unitizing support structure whereby all explosive pellets are inserted within or extracted from a tubular...
7533722 Surge chamber assembly and method for perforating in dynamic underbalanced conditions  
A surge chamber assembly (70) for use in a wellbore includes a housing (80) having one or more openings (112), a surge chamber (100) and a combustion chamber (98). The openings (112) provide fluid...
7533731 Casing apparatus and method for casing or repairing a well, borehole, or conduit  
A casing apparatus is provided to install a hard, pressure-resistant seal along a wall of a well in situ. The casing apparatus includes a moving device and a deformable tubular sleeve having a...
7510017 Sealing and communicating in wells  
A device includes a main body adapted to couple between a first element of a working string and a second element of the working string. A seal is provided about the main body and is adapted to...
7497259 System and method for forming cavities in a well  
A technique is provided to form perforations in a wellbore. The formation of perforations is carefully controlled by a perforating device to create a series of sequential perforations in a desired...
7493958 Technique and apparatus for multiple zone perforating  
A technique that is usable with a well includes running a production string into the well so that the production string extends through a first isolated zone of the well and at least into a second...
7487834 Methods of using a laser to perforate composite structures of steel casing, cement and rocks  
Apparatus and methods of using lasers are provided for the perforation of oil and gas well casings and rock formations. A rock removal process called laser spallation is provided that utilizes a...
7487832 Force transfer apparatus to assist release of loaded member  
A completion assembly having a force transfer apparatus to assist in the release of a loaded member.
7487833 Safety apparatus for perforating system  
Safety apparatus is disclosed for providing ballistic train interruption in a perforating system. The safety apparatus comprises a generally tubular shaped housing having first and second ends...
7469745 Apparatus and method to mechanically orient perforating systems in a well  
The present invention relates to an apparatus and method for using that apparatus to orient a perforating gun or system to minimize or eliminate the damage which may be caused to exterior control...
7451818 Method of reducing sand production from a wellbore  
A method is provided for the reduction of inflow of rock particles from an earth formation into a wellbore for the production of hydrocarbon fluid. The method comprises creating a zone of reduced...
7445045 Method of optimizing production of gas from vertical wells in coal seams  
The present invention is directed to a method for producing gas from a subterranean formation containing a coal seam. The method includes the steps of drilling a substantially vertical well bore...
7441598 Methods of stabilizing unconsolidated subterranean formations  
Methods of stabilizing unconsolidated portions of a subterranean formation are provided. In one embodiment, the methods comprise: creating or enhancing at least two slots in an unconsolidated...
7441601 Perforation gun with integral debris trap apparatus and method of use  
An improved perforation gun includes an outer gun barrel, which is used in conjunction with an inner movable charge carrier or an inner movable sleeve to trap virtually all of the debris created...
7431083 Sub-surface coalbed methane well enhancement through rapid oxidation  
A method of stimulating production of coalbed methane involves providing a perforation charge comprising a standard charge portion and a charge additive able to produce localized temporary...
7413015 Perforating gun  
A system and method of generating one or more perforations in a well casing while simultaneously restricting burr formation is provided. A perforating gun assembly includes a gun housing having an...
7409993 Weight spacer apparatus  
A weight spacer apparatus has a carrier which is tubular in shape and a spacer tube which is also tubular in shape for insertion into the carrier. The weight spacer apparatus also has a plurality...
7409992 Perforating gun  
The present invention provides an apparatus for use in perforating a well having a plurality of explosive charges. Each explosive charge is adapted to generate a perforation tunnel in the...
7401650 Apparatus and methods for radially expanding a tubular member  
Radially expanding a tubular such as a liner or casing, especially in a downward direction. The apparatus includes at least one driver device such as a piston that is typically fluid-actuated, and...
7401652 Multi-perf fracturing process  
A method is shown for fracturing a subterranean formation from a deviated well bore. A plurality of spaced fracture initiation points are created in the well bore. Hydraulic pressure is applied to...
7387162 Apparatus and method for selective actuation of downhole tools  
The present invention provides systems, methods and devices for selectively firing a gun train formed of a plurality of guns. Conventionally, the guns each include a detonator assembly that...
7360587 Debris reduction perforating apparatus  
A perforating apparatus (100) includes a plurality of shaped charges (102) each having a case, an initiation end and a discharge end. A detonating cord (116) is operably associated with the...
7360599 Debris reduction perforating apparatus and method for use of same  
A perforating apparatus (100) includes a plurality of shaped charges (102) each having a case, an initiation end and a discharge end. A detonating cord (116) is operably associated with the...