Class / Patent application number | Description | Number of patent applications / Date published |
175054000 | BORING BY BELOW GROUND RECIRCULATION OF UNSUPPORTED ELEMENTS (E.G., SHOT) | 10 |
20080210472 | Impact Excavation System And Method With Particle Separation - A system and method for excavating a subterranean formation, according to which a suspension of liquid and a plurality of impactors are introduced into at least one cavity formed in a body member and are discharging from the cavity so that the impactors remove a portion of the formation. The impactors are separated from at least a portion of the fluid, and are passed to a conduit so that the impactors accumulate in the conduit before being removed from the conduit. | 09-04-2008 |
20090090557 | Injection System And Method - An excavation system for forming a wellbore through a subterranean formation, the system employing pressurized drilling fluid with impactors mixed therein. The pressurized fluid with impactors is directed to a drill string having a drill bit with nozzles on its lower end. The fluid impactor mixture is discharged from the nozzles and against the formation, wherein the impactors contact, compress, and fracture the formation to excavate through the formation. The system includes an impactor injection system that injects impactors into a stream of pressurized drilling fluid to form the mixture. The injection system operates at substantially the same pressure as the pressurized drilling fluid. | 04-09-2009 |
20090200080 | Impact excavation system and method with particle separation - A system and method for excavating a subterranean formation, according to which a suspension of liquid and a plurality of impactors are introduced into at least one cavity formed in a body member and are discharging from the cavity so that the impactors remove a portion of the formation. The impactors are separated from at least a portion of the fluid, and are passed to a conduit so that the impactors accumulate in the conduit before being removed from the conduit. | 08-13-2009 |
20100078217 | METHOD AND ASSEMBLY FOR ABRASIVE JET DRILLING - A method for supplying a jet of abrasive fluid for the purpose of providing a borehole by removing earth formation material through abrasion comprises a drill string and a drilling assembly connected to the drill string. The drilling assembly comprises a jetting device with a mixing space, a drilling fluid, a particle inlet, an abrasive fluid outlet for discharging a mixture of drilling fluid and magnetic particles, and a magnetic particle circulation system comprising a supporting surface which is exposed to a return stream along the drilling assembly. The method includes
| 04-01-2010 |
20100108389 | DISTANCE HOLDER WITH HELICAL SLOT - A distance holder for connection to, and rotation with, a drill string in an earth formation drilling device arranged to supply a jet of abrasive fluid for the purpose of providing a borehole by removing earth formation material through abrasion, comprises a housing with a chamber which is essentially rotational symmetric and which is to face the earth formation material, and a jet nozzle which arranged for discharging a jet of the abrasive fluid in the chamber, the housing comprising at least one slot for allowing the abrasive fluid to leave the chamber. The slot is continued over the housing outer surface so as to counteract rolling motions of the particles which are comprised in the abrasive fluid. | 05-06-2010 |
20100175924 | APPARATUS AND METHOD FOR IMPROVEMENTS IN WELLBORE DRILLING - The invention relates to a tool for use in wellbore drilling, suitable for use with a drill string for drilling a wellbore having an inner wall, the tool comprising means for generating particles of solid material from the formed inner wall of a drilled wellbore, and means for directing the generated particles to the inner wall of the wellbore and a method of forming a layer of solid particles on the inner wall of a wellbore drilled by such a drill string. | 07-15-2010 |
20100294567 | Impactor Excavation System Having A Drill Bit Discharging In A Cross-Over Pattern - A system for use in excavating a wellbore that includes a drill string and attached drill bit that has nozzles that are in fluid communication with the drill string. The system receives pressurized slurry of fluid and impactor particles and directs the slurry at a subterranean formation from the nozzles to form the wellbore. Discharge streams are formed from the slurry exiting the nozzles, the discharge streams impact and fracture the formation to remove material. The nozzles are oriented so that the streams excavate in the middle and periphery of the borehole bottom. The nozzles can be oriented to form frusto-conical spray patterns when the bit is rotated, wherein the spray patterns can intersect or overlap. | 11-25-2010 |
20120024601 | METHODS OF USING A PARTICLE IMPACT DRILLING SYSTEM FOR REMOVING NEAR-BOREHOLE DAMAGE, MILLING OBJECTS IN A WELLBORE, UNDER REAMING, CORING, PERFORATING, ASSISTING ANNULAR FLOW, AND ASSOCIATE METHODS - A particle impact drilling system and method are described. In several exemplary embodiments, the system and method may be a part of, and/or used with, an apparatus or system, methods, to excavate a subterranean formation. The system can including, for example, removing near-borehole damage, casing, window milling, fishing, drilling with casing, under reaming, coring, perforating, effective circulatory density management, assisted annular flow, and directional control. Embodiments of associated systems and methods are also included. | 02-02-2012 |
20120205155 | METHODS OF USING A PARTICLE IMPACT DRILLING SYSTEM FOR REMOVING NEAR-BOREHOLE DAMAGE, MILLING OBJECTS IN A WELLBORE, UNDER REAMING, CORING, PERFORATING, ASSISTING ANNULAR FLOW, AND ASSOCIATED METHODS - A particle impact drilling system and method are described. In several exemplary embodiments, the system and method may be a part of, and/or used with, an apparatus or system, methods, to excavate a subterranean formation. The system can including, for example, removing near-borehole damage, casing, window milling, fishing, drilling with casing, under reaming, coring, perforating, effective circulatory density management, assisted annular flow, and directional control. Embodiments of associated systems and methods are also included. | 08-16-2012 |
20120205156 | METHODS OF USING A PARTICLE IMPACT DRILLING SYSTEM FOR REMOVING NEAR-BOREHOLE DAMAGE, MILLING OBJECTS IN A WELLBORE, UNDER REAMING, CORING PERFORATING, ASSISTING ANNULAR FLOW, AND ASSOCIATED METHODS - A particle impact drilling system and method are described. In several exemplary embodiments, the system and method may be a part of, and/or used with, an apparatus or system, methods, to excavate a subterranean formation. The system can including, for example, removing near-borehole damage, casing, window milling, fishing, drilling with casing, under reaming, coring, perforating, effective circulatory density management, assisted annular flow, and directional control. Embodiments of associated systems and methods are also included. | 08-16-2012 |