Class / Patent application number | Description | Number of patent applications / Date published |
166299000 | With explosion or breaking container to implode | 22 |
20090032258 | OPENHOLE PERFORATING - An underbalanced perforating system is disclosed for use in openhole completions to maximize the wellbore and matrix cleanup efficiency, to connect natural fracture patterns, and/or to enable application of new drilling fluid technology in difficult subsurface environments. The perforating system can be used for any hydrocarbon bearing formations with any lithology. | 02-05-2009 |
20090038802 | 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 reaction or the detonation of an explosive, is generated in the packer to at least partially assist an operation (the setting of a slip, setting of the seal element, etc.) of the packer. In some implementations, the chemical reaction or explosive detonation occurs in response to a predetermined movement of the piston. | 02-12-2009 |
20090159286 | METHOD OF TREATING SUBTERRANEAN RESERVOIRS - A method of fracturing a rock formation is provided including placing through a wellbore penetrating the rock formation propellants in a cavity located at a radial distance from the wellbore and igniting the propellants to cause a pressure sufficient to fracture the formation. | 06-25-2009 |
20090260821 | 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 ignition and subsequent combustion, together with proper positioning of the energy source in relation to geologic formations, can be used to establish and maintain increased formation porosity and flow conditions with respect to the pay zone. | 10-22-2009 |
20090301721 | 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 production, productivity index, and recovery factor. The disclosed device and method can be used for higher permeability of the pay zone due to creation of a network of microcracks in the bottomhole formation zone and facilitates to increase the flow of oil, or other fluids, from the reservoir to the well. Generation of cyclic pressure pulses with varied amplitude and time parameters and proper localization of pulses in space through mechanism of convective combustion provides a “soft” impact upon the wellbore without risk of damage or formation consolidation; the said impact is achieved by using a device which is a downhole cyclic pressure generator operating by a consecutive combustion of layers of compositions having different combustion rates. The compositions are made on the basis of loose-packed solid fuel, solid oxidizer, and functional additive of a liquid hydrocarbon. | 12-10-2009 |
20100096136 | OIL WELL PERFORATORS - An oil and gas well shaped charge perforator capable of providing an exothermic reaction after detonation is provided, comprising a housing, a high explosive, and a reactive liner where the high explosive is positioned between the reactive liner and the housing. The reactive liner is produced from a composition which is capable of sustaining an exothermic reaction during the formation of the cutting jet. The composition may be selected from any known formulation which is suitable for use in an oil and gas well perforator, typically the composition will comprise at least two metals such as to form a inter-metallic as classified by Hume-Rothery electron compounds and at least one further metal, which is not capable of an exothermic reaction with the reactive composition which is present in an amount greater than 10% w/w of the liner. Typically at least one of the metals which undergoes an exothermic reaction may be selected from Al, Ce, Li, Mg, Mo, Ni, Fe, Co, Nb, Pb, Pd, Ta, Ti, Zn or Zr. The liner composition may preferably be a pressed particulate composition, such that the material is consolidated under pressure to form the desired shape of the liner. To aid consolidation a binder may also be added. | 04-22-2010 |
20100132947 | Method for Perforating Failure-Prone Formations - By using reactive shaped charges to perforate failure prone formations, the present invention is able to keep formation sand in place and increase productivity. An efficient flow distribution is surprisingly produced without requiring surge flow or post-perforation stimulation. Further, using the secondary reactive effects of reactive shaped charges allows for the reduction of the risk of erosion and minimization of sand production. In a preferred embodiment, a liner capable of producing a strongly exothermic intermetallic reaction between liner components within and around the tunnel is used to achieve a high percentage of substantially clean and enlarged perforation tunnels conducive to flow or gravel packing | 06-03-2010 |
20120067578 | WELLBORE TUBULAR CUTTER - An apparatus and a method for cutting a wellbore tubular are described herein. The apparatus and the method 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 wellbore tubular. Each section may include a support plate having a passage, a liner positioned adjacent to the support plate, and an energetic material disposed between the support plate and the liner. An initiator having a shaft may be positioned in the passages of the upper section and the lower section. | 03-22-2012 |
20120298364 | MULTI-PHASE DOWN HOLE INJECTOR - A multi-phase down hole injector related to a down hole tool for oilfield well drilling, has a shooting pipe, an axial hole disposed in the center of the shooting pipe, one end of the shooting pipe is connected to an ellipsoid guide, at least two housing seats sets are disposed along the shooting pipe, every housing seat set are disposed with at least two housing seats of radial symmetry, the inner ends of every housing seat is separately connected to the axial hole, every housing seat is disposed with a injection barrel by the base, and the explosive cavity is disposed between the base and the housing seat. The injected viscosity fluid can exert squeezing and shearing force to the rock to make the channel and breach smaller or eliminated. | 11-29-2012 |
20120305252 | INSENSITIVE EXPLOSIVE COMPOSITION AND METHOD OF FRACTURING ROCK USING AN EXTRUDABLE FORM OF THE COMPOSITION - Insensitive explosive compositions were prepared by reacting di-isocyanate and/or poly-isocyanate monomers with an explosive diamine monomer. Prior to a final cure, the compositions are extrudable. The di-isocyanate monomers tend to produce tough, rubbery materials while polyfunctional monomers (i.e. having more than two isocyanate groups) tend to form rigid products. The extrudable form of the composition may be used in a variety of applications including rock fracturing. | 12-06-2012 |
20130000908 | System and Method For Fracturing Rock In Tight Reservoirs - Methods and systems are provided for fracturing rock in a formation to enhance the production of fluids from the formation. In one exemplary method, one or more wells are drilled into a reservoir, wherein each well comprises a main wellbore with two or more lateral wellbores drilled out from the main wellbore. One or more explosive charges are placed within each of the two or more lateral wellbores, and the explosive charges are detonated to generate pressure pulses which at least partially fracture a rock between the two or more lateral wellbores. The detonations are timed such that one or more pressure pulses emanating from different lateral wellbores interact. | 01-03-2013 |
20130284441 | Downhole severing tool - The pipe cutting capacity of an explosive pipe cutter may be improved by directing colliding shock fronts from opposite axial directions against a disc of metal having a shock impedance substantially corresponding to the shock impedance capacity of the explosive material | 10-31-2013 |
20130306316 | SEPARABLE COMPLETION ARCHITECTURE - A technique facilitates performance of a work over on a completion used in a wellbore. The completion comprises an upper completion coupled with a lower completion by a mandrel and a latch. When a work over is to be performed, the upper completion is separated by moving a cutter device down along the mandrel and operating the cutting device to sever the mandrel. Once the mandrel has been severed, the latch may be activated to release the upper completion for removal. | 11-21-2013 |
20130341026 | FRACTURING APPARATUS - A fracturing apparatus in a wellbore, having a housing with at least one injection port; an injection fluid supply interface to provide injection fluid for the hydraulic fracturing apparatus; and at least one high pressure combustor received within the housing. The housing further includes a combustible medium interface that is in fluid communication with the high pressure combustor, which is configured and arranged to provide repeated ignition cycles that include a combustion cycle that ignites the combustible medium and a fuel delivery cycle that delivers the combustible medium to the combustor, wherein pressure resulting from the combustion cycle forces the injection fluid out an injection port to cause fracturing in a portion of the earth around the wellbore. | 12-26-2013 |
20140060839 | FRACTURING A WELL FORMATION - A fracturing tool includes a container structure, and a puncher charge arranged in the container structure, where the puncher charge if detonated is configured to extend an opening through the container structure without creating a perforation tunnel in a formation surrounding the well. An energetic material is to be initiated by detonation of the puncher charge, where the energetic material upon initiation creates an increased pressure in the well to perform fracturing of the formation. | 03-06-2014 |
20140290950 | Multi-Scale, Multi-Layer Diode Grid Array Rectenna - An antenna for receiving electromagnetic energy with multiple grid arrays includes first and second grid patterns of diodes each acting as a half-wave rectifying element when illuminated by the electromagnetic energy whereby the electromagnetic energy is efficiently converted into electrical current at an output even when the electromagnetic energy is randomly polarized. The multiple grid arrays are spaced from one another and can also be offset from one another. In accordance with an aspect of the invention, the first and second grid patterns of diodes have varying diode densities. | 10-02-2014 |
20160084055 | DOWNHOLE STIMULATION TOOLS AND RELATED METHODS OF STIMULATING A PRODUCING FORMATION - A downhole stimulation tool comprising an outer housing exhibiting apertures extending therethrough, opposing propellant structures within the outer housing, and at least one initiator adjacent each of the opposing propellant structures. Each of the opposing propellant structures comprise at least one higher combustion rate propellant region, and at least one lower combustion rate propellant region longitudinally adjacent the at least one higher combustion rate propellant region. Additional downhole stimulation tools and methods of stimulating a producing formation are also disclosed. | 03-24-2016 |
20160084059 | METHODS AND APPARATUS FOR DOWNHOLE PROPELLANT-BASED STIMULATION WITH WELLBORE PRESSURE CONTAINMENT - Downhole stimulation tools include a housing and at least one propellant structure within the housing comprising at least one propellant grain of a formulation, at least another propellant grain of a formulation different from the formulation of the at least one propellant grain longitudinally adjacent the at least one propellant grain, and at least one initiation element proximate at least one of the propellant grains. At least one pressure containment structure is secured to the housing and comprises a seal element expandable in response to gas pressure generated by combustion of a propellant grain of the at least one propellant structure. Related methods are also disclosed. | 03-24-2016 |
20160145990 | FLUID TRANSPORT SYSTEMS FOR USE IN A DOWNHOLE EXPLOSIVE FRACTURING SYSTEM - Explosive devices and assemblies are described herein for use in geologic fracturing. Components of energetic material used in the explosive devices can be initially separated prior to inserting the assembled system down a wellbore, then later combined prior to detonation. Some exemplary explosive units for insertion into a borehole for use in fracturing a geologic formation surrounding the borehole can comprise a casing comprising a body defining an internal chamber, a first component of an explosive positioned within the internal chamber of the casing, and an inlet communicating with the internal chamber through which a second component of the explosive mixture is deliverable into the internal chamber to comprise the explosive. | 05-26-2016 |
20160153271 | MULTI-STAGE GEOLOGIC FRACTURING | 06-02-2016 |
20160153272 | CASINGS FOR USE IN A SYSTEM FOR FRACTURING ROCK WITHIN A BORE | 06-02-2016 |
20160177694 | METHOD FOR DELIVERING OR FOR PREPARING THE DELIVERY OF FLUID MEDIA | 06-23-2016 |