Match Document Document Title
9038521 Apparatus for creating and customizing intersecting jets with oilfield shaped charges  
A geological perforating tool (gun) shape charges disposed at an angle that provides an improvement over other known embodiments by accurately securing the charges in the tool to facilitate...
9033041 Completing a multi-stage well  
A technique includes running a seat assembly on a conveyance line into a tubing string, which has previously been installed in a well. The seat assembly includes a seat, which is adapted to...
9022116 Shaped charge tubing cutter  
A shaped charge pipe cutter is constructed with the cutter explosive material packed intimately around an axially elongated void space that is continued through a heavy wall boss portion of the...
9022115 Method and apparatus for wellbore perforation  
A method for wellbore perforation in which a section of the wellbore to be perforated is isolated and purged of wellbore fluid to provide a clear path for laser beam transmittal. A laser beam...
8985210 Methods of severing an object from the outside using heat evolved from an exothermic reaction  
A method of severing at least a first object comprises: positioning a severing device adjacent to the first object, wherein the first object is a wireline or a tubular, and wherein the severing...
8978749 Perforation gun string energy propagation management with tuned mass damper  
A perforation tool assembly comprises a perforation gun, and a mass energy absorber coupled to the perforation gun. The mass energy absorber is configured to alter the propagation of mechanical...
8967270 Rigless abandonment system  
A rigless abandonment system including a surface vessel having an attached lifting device and a moonpool. The system further includes a cutting module configured to connect to a subsea wellhead,...
8967256 Wellbore perforation tool  
A perforation tool comprises an explosive charge comprising an explosive focal axis, a tool body containing the explosive charge, and a flowable material carried with the tool and disposed along...
8967257 Method and apparatus for expendable tubing-conveyed perforating gun  
Methods and apparatus are presented for a “disappearing” perforator gun assembly. In a preferred method of perforating a well casing, inserted into the well casing is a tubing conveyed perforator...
8960289 Combined fracturing and perforating method and device for oil and gas well  
A combined fracturing and perforating method and device for oil and gas well are disclosed. The method utilizes an explosion of a perforating charge (5) in a combined fracturing perforator to...
8960288 Select fire stackable gun system  
A system and method of perforating by stacking a perforating string within a wellbore, then deploying the perforating string to a designated depth for detonating shaped charges in the perforating...
8939210 Drill collar severing tool  
A pipe severing tool is arranged to align a plurality of high explosive pellets along a unitizing central tube that is selectively separable from a tubular external housing. The pellets are loaded...
8931555 Device for a downhole apparatus for machining of casings and also a method of depositing machined shavings  
There is described a device for machining apparatus arranged for machining of a portion of a casing positioned in a wellbore, wherein a return fluid conduit extends from the machining apparatus in...
8919443 Method for generating discrete fracture initiation sites and propagating dominant planar fractures therefrom  
A method for performing a downhole perforating and fracturing operation from a wellbore (12) positioned within a subterranean formation (18). The method includes locating a perforating gun string...
8919236 Perforating gun drop sub  
A perforating gun assembly comprises a drop sub linking the firing head to the gun tube or tubes. The drop sub includes a 360° perimeter shaped charge explosive for severing pipe having an axial...
8919444 System and method for enhanced wellbore perforations  
An apparatus for perforating a subterranean formation may include a casing, an energetic material, a liner, and an acid-generating material. The casing may have a slotted end configured to receive...
8910713 Gun upset and no-go system for deployment of perforating gun assemblies  
Devices and methods for deploying perforating guns through a wellhead production assembly and into a wellbore. In particular embodiments, the invention provides devices and methods for deploying...
8881816 Shock load mitigation in a downhole perforation tool assembly  
A perforation tool assembly is provided. The perforation tool assembly comprises an energy train, a first perforation gun, and a second perforation gun. The energy train comprises a moderator to...
8881817 Cutting tool  
A downhole tool having a cylindrical body, a sleeve having a contact portion disposed on a distal end, and a cutter having a radiused portion on a top surface operatively engageable with the...
8875787 Electromechanical assembly for connecting a series of guns used in the perforation of wells  
An electromechanical assembly for a series of guns used in the perforation of petroleum producing wells. Each gun is a cylindrical housing having a charge-carrier loaded with explosive charges in...
8863851 Milled packer retaining tool with reverse circulation  
A grapple device is secured to a mill to allow relative rotation between them. The grapple has an outward bias to allow it to grip the packer bore or an extension from the packer. The mandrel has...
8857514 Method and systems to sever wellbore devices and elements  
A method for performing an operation in the wellbore may include at least partially separating a wellbore tubular while reducing a compression in a section of the wellbore tubular using a force...
8844651 Three dimensional fluidic jet control  
A method of controlling a fluid jet can include discharging fluid through an outlet of a jetting device, thereby causing the fluid jet to be flowed in multiple non-coplanar directions, and the...
8844614 Tangential perforation system  
A method to separate a gas phase from a liquid phase in a subterranean formation that includes positioning a downhole tool in a wellbore, operating the downhole tool to form perforations in the...
8839864 Casing cutter  
Tools and methods for cutting multiple, co-extending casings in oil and gas wells. The tools comprise a cylindrical body and first and second sets of cutting blades. Each set of cutting blades is...
8839863 High pressure/deep water perforating system  
A perforating system having a perforating gun with a gun body formed from a ductile material. The gun body deforms under pressure while maintaining sufficient structural integrity to remain intact...
8839873 Isolation of zones for fracturing using removable plugs  
An interval can be divided into zones by inserting a series of plugs that register with specific profiles at predetermined intervals along a section of pipe. Each plug supports a releasable...
8833439 Galvanically isolated exit joint for well junction  
A well system for forming a window in a casing string positioned in a wellbore. The system includes first and second steel casing joints (462, 464) interconnectable within the casing string. An...
8826983 Plasma charges  
Disclosed are plasma charges and methods for using plasma charges in completing a well.
8807218 Telescopic laser purge nozzle  
A method and apparatus for wellbore perforation in which a laser beam at a downhole location of a wellbore is directed to a target area of a wellbore wall to be perforated. The laser beam is...
8807003 Perforating gun assembly and method for controlling wellbore pressure regimes during perforating  
A method comprises providing a gun string assembly within a wellbore and perforating the wellbore using the gun string assembly. The gun string assembly comprises a plurality of perforating guns...
8807206 Perforating gun debris retention assembly and method of use  
A perforating gun system comprises at least one charge disposed within a gun body, and a first sleeve disposed within the gun body about the at least one charge. The first sleeve comprises a first...
8794326 Perforating gun with variable free gun volume  
A method of adjusting a pressure reduction to occur in a wellbore following firing of at least one perforating gun can include determining a desired free gun volume which corresponds to a desired...
8783360 Laser assisted riser disconnect and method of use  
There is provided a high power laser-riser blowout preventer package and laser module for use with a subsea riser. The laser module and laser-riser package use high power laser energy to quickly...
8783361 Laser assisted blowout preventer and methods of use  
There is provided a high power laser assisted blowout preventer and methods of use. In particular, there are provided systems and assemblies for utilizing high power laser energy within a blowout...
8770301 Explosive well tool firing head  
A firing head embodiment of the invention confines a connected capacitance cartridge, explosive detonator, and wireline connection switch within an independent, cylindrical housing tube that is...
8739673 Perforating gun assembly and method for controlling wellbore pressure regimes during perforating  
A method comprises: a. determining a configuration of a gun string, b. determining, by a computer, a pressure transient at a location in a wellbore, c. comparing the one or more pressures with the...
8726996 Device for the focus and control of dynamic underbalance or dynamic overbalance in a wellbore  
A downhole tool assembly for use in a wellbore includes a tubular body carrying an explosive which is selectively detonated to create a dynamic underbalance or overbalance effect in the wellbore....
8726995 Method for the enhancement of dynamic underbalanced systems and optimization of gun weight  
By using reactive shaped charges, a dynamic underbalance effect associated with detonation of a perforating system is enhanced without compromising shot density. Fewer shaped charges can be loaded...
8720566 Slot perforating tool  
An apparatus including a body, a mandrel disposed at least partially within the body, and a spring. The spring maintains the mandrel in a retracted position within the body until a predetermined...
8720564 Tubular severing system and method of using same  
Techniques for severing a tubular of a wellbore penetrating a subterranean formation are provided. A blade is extendable by a ram of a blowout preventer positionable about the tubular. The blade...
8720555 Self-diverting high-rate water packs  
A method for diverting fluids across a perforation tunnel in high-rate water pack operations may include providing a wellbore extending into a subterranean formation, wherein a perforation tunnel...
8720565 Tubular severing system and method of using same  
A method for severing a tubular of a wellbore is provided. The method involves positioning a blowout preventer about a tubular, the blowout preventer having a plurality of rams slidably...
8720584 Laser assisted system for controlling deep water drilling emergency situations  
There is provided a high power laser riser blowout preventer system and controller for operation thereof. The system utilizes high power laser cutters that are associated with the riser and the...
8714252 Shock load mitigation in a downhole perforation tool assembly  
A perforation tool assembly comprises an energy train, a first perforation gun, and a second perforation gun. The energy train comprises a moderator to reduce the speed of propagation of a...
8714251 Shock load mitigation in a downhole perforation tool assembly  
A perforation tool assembly comprises an energy train, a first perforation gun, and a second perforation gun. The energy train comprises a moderator to reduce the speed of propagation of a...
8701767 Boron shaped charge  
A shaped charge includes a casing; a liner located within an opening of the casing; and an explosive located in the region between the casing and the liner, wherein at least one of the liner and...
8684083 Perforating gun with rotatable charge tube  
A perforating gun designed to orient a charge holding structure (e.g., tube, solid rod) within a barrel of the perforating gun to be at the same position relative to a wellbore casing regardless...
8678087 Wellbore laser operations  
Systems, apparatuses, and methods for producing fluids from a wellbore wherein fluids may be communicated through an aperture in a wall of the wellbore. A laser can then be used to seal the...
8672031 Perforating with wired drill pipe  
Embodiments of the invention include methods and systems for perforating a well using a wired work string assembly. According to embodiments of the invention, the method includes positioning a...