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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...
8973657 Gas generator for pressurizing downhole samples  
An apparatus for obtaining fluid samples in a subterranean wellbore comprises a carrier assembly configured to be disposed in a subterranean wellbore; a sampling chamber operably associated with...
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...
8939205 Method and apparatus for generating seismic pulses to map subterranean fractures  
The methods described are for determining distribution, orientation and dimensions of networks of hydraulically-induced fractures within a subterranean formation containing fluids. Micro-seismic...
8931569 Method and apparatus for a wellbore assembly  
A method and apparatus for a wellbore assembly. The wellbore assembly may comprise a conveyance member including at least one of a continuous spooled rod, a wireline, and a slickline; an...
8893786 Well tools operable via thermal expansion resulting from reactive materials  
Methods of actuating a well tool can include releasing chemical energy from at least one portion of a reactive material, thermally expanding a substance in response to the released chemical...
8839871 Well tools operable via thermal expansion resulting from reactive materials  
Methods of actuating a well tool can include releasing chemical energy from at least one portion of a reactive material, thermally expanding a substance in response to the released chemical...
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...
8789467 Surface safe explosive tool  
An explosive tool comprises a body structure, a charge, a detonator to ignite the charge via propagation of thermal energy, a pressure actuated safety to prevent propagation of sufficient thermal...
8757263 Downhole cyclic pressure pulse generator and method for increasing the permeability of pay reservoir  
This invention relates to the oil and gas industry and to exploration and production of water resources, in particularly, for stimulation of fluid flow to the well, e.g., for higher oil...
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....
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...
8579022 Apparatus for deploying and activating a downhole tool  
An apparatus for deploying and activating a downhole tool activated by an explosive charge such as a drill pipe cutter or hole puncher. The apparatus includes a sealing member with an external...
8561683 Wellbore tubular cutter  
An apparatus and a method for cutting a wellbore tubular may include an upper section and a lower section mating at a juncture plane defined by a plane transverse to the longitudinal axis of the...
8555764 Perforating gun assembly and method for controlling wellbore pressure regimes during perforating  
A downhole tool gun string assembly comprises a first perforating gun operable to generate a first pressure at a first location in a wellbore, wherein the first perforating gun comprises a first...
8534367 Wireline pressure setting tool and method of use  
A method and apparatus for retro-fitting an explosive setting tool to a non-explosive setting tool is provided to eliminate the use of pyrotechnics when setting auxiliary tools. An explosive...
8522863 Propellant fracturing system for wells  
A fracturing system for wells has a propellant charge having a known surface area for combustion, and a combustion rate as a function of pressure with lower combustion rates at lower pressures and...
8474533 Gas generator for pressurizing downhole samples  
An apparatus for obtaining fluid samples in a subterranean wellbore comprises a carrier assembly configured to be disposed in a subterranean wellbore; a sampling chamber operably associated with...
8424455 Surface safe explosive tool  
An explosive tool is disclosed. The explosive tool comprises a body structure, a charge, a detonator to ignite the charge via propagation of thermal energy, a pressure actuated safety to prevent...
8408308 Apparatus and method for increasing the amount of dynamic underbalance in a wellbore  
A method for use in a wellbore includes the steps of providing an elongated, closed tubular body defining an internal chamber wherein the tubular body has an external surface formed with treated...
8381807 Hydraulically-actuated propellant stimulation downhole tool  
A hydraulically-actuated propellant stimulation downhole tool for hydrocarbon wells. According to one embodiment of the invention, the tool comprises a first section having an internal sidewall...
8365824 Perforating and fracturing system  
A system for use in borehole completion is provided and includes a perforating sub, a firing sub having a first port and an interior and including a firing assembly disposable within the interior...
8336437 Perforating gun assembly and method for controlling wellbore pressure regimes during perforating  
A perforating gun assembly for use in a wellbore. The perforating gun assembly includes a carrier gun body and a charge holder disposed within the carrier gun body. A plurality of shaped charges...
8327926 Method for removing a consumable downhole tool  
A method for providing a torch apparatus into a well bore for providing heat to a material that includes the step of inserting the torch apparatus into the well bore, such that a plurality of...
8302688 Method of optimizing wellbore perforations using underbalance pulsations  
A perforating system and method for use in a wellbore. In operation, the perforating system is disposed in the wellbore and used to form perforations in the wellbore. Thereafter, the perforating...
8291969 Consumable downhole tools  
A downhole tool having a body or structural component comprises a material that is at least partially consumed when exposed to heat and a source of oxygen. The material may comprise a metal, such...
8291970 Consumable downhole tools  
A downhole tool having a body or structural component comprises a material that is at least partially consumed when exposed to heat and a source of oxygen. The material may comprise a metal, such...
8281858 Shot perforator device and method for water well bore decommissioning  
Application of the method and device to a water well will permanently seal the well casing in order to prevent hydraulic cross-contamination with other water wells in the area. The method employs...
8235102 Consumable downhole tool  
A torch apparatus for consuming a material having a fuel load that produces heat and a source of oxygen when burned, and a plurality of slots having interstitial spaces therebetween for allowing...
8186425 Sympathetic ignition closed packed propellant gas generator  
A downhole propellant gas generator includes a propellant assembly that comprises a plurality of individual lengths of an energetic material packed in a selected configuration and at least one...
8167044 Shaped charge  
A perforating apparatus that is usable with a well includes a shaped charge. The shaped charge includes a case, an explosive and a liner. The liner is adapted to form a perforation jet to form a...
8141639 Detonator for material-dispensing wellbore tools  
An apparatus for use in dispensing fluid into a wellbore includes a piston element releasably coupled to a housing and a detonator in the housing that applies a force sufficient to release the...
8127832 Well stimulation using reaction agents outside the casing  
Methods and apparatus for stimulating oil or gas wells using material cemented outside the casing. Reaction agents, usually comprising oxygen-rich material and a coil of high order explosive, are...
8061431 Method of operating a pressure cycle operated perforating firing head and generating electricity in a subterranean well  
Pressure cycle operated apparatus and methods. A method of actuating a firing head includes the steps of: reciprocably displacing an actuator piston of the firing head, the displacing step...
8033333 Downhole perforation tool  
A propellant assembly for subsurface fracturing and method for using the same are provided. The assembly can include a first tubular member having an annulus formed therethrough; a second tubular...
8020622 Annealing of materials downhole  
A downhole annealing system includes a component to be annealed; a steam generating catalyst in proximity to the component; and a reactant fuel selectively communicative with the catalyst to...
7980310 Backoff sub and method for remotely backing off a target joint  
A backoff sub includes a housing and a backoff facilitator at least partially within the housing. The backoff sub is a part of the string that is stuck and is capable of adding energy to the...
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...
7896104 Device and method for explosive drilling  
The invention relates to a device and a method for explosive drilling. Explosive capsules are fired by a firing device at a material to be stripped. A high degree of safety is attained in that use...
7874350 Reducing the energy requirements for the production of heavy oil  
An apparatus for generating a heated product stream downhole is provided wherein a fuel rich mixture is reacted downhole by contact with a catalyst to produce a partially reacted product stream,...
7870895 Packer  
A packer includes a seal element and a piston. The piston compresses the seal element to form an annular seal in the well. A pressure wave, such as a pressure wave that is caused by a chemical...
7861785 Downhole perforation tool and method of subsurface fracturing  
A propellant assembly for subsurface fracturing and method for using the same are provided. The assembly can include a first tubular member having an annulus formed therethrough; a second tubular...
7854276 Methods, systems, and apparatus for production of hydrocarbons from a subterranean formation  
Methods, systems, and apparatus that are suitable for use in production of hydrocarbons from subterranean heavy oil deposits employ a subterranean cavity in communication with a borehole. The...
7854267 Methods and systems to activate downhole tools with light  
The present invention comprises a system and methods to actuate downhole tools by transmitting an optical signal through an optical fiber to the downhole tool. The optical signal can comprise a...
7819180 High-energy gas fracture apparatus for through-tubing operations  
Embodiments disclosed include a high-energy gas fracture apparatus for through-tubing operation. The apparatus includes a blast head, a fracturing body connected-with the blast head and an...
7810569 Method and apparatus for subterranean fracturing  
A subterranean formation stimulation system, comprising a gas generator, a high pressure seal, and a fluid injection system. The high pressure seal may be a packer and or plug having an outer...
7802619 Firing trigger apparatus and method for downhole tools  
Methods and devices are provided for controlling detonation of explosives in a well bore for perforation or a well bore casing, which avoid or reduce unintentional or undesirable detonations while...
7770638 Method for completion, maintenance and stimulation of oil and gas wells  
A method for inducing motion in solid particulates in a solid/liquid mixture located in proximity to the periphery of a wellbore or in the formation zone adjacent to a wellbore in an oil or gas...
7770662 Ballistic systems having an impedance barrier  
A shaped charge assembly for use in a perforating gun that comprises a shaped charge holder, two or more shaped charges, slots formed to receive the shaped charges, and an impedance barrier...

Matches 1 - 50 out of 417 1 2 3 4 5 6 7 8 9 >