Quotables
"To place a man in a multi-stage rocket and project him into the controlling gravitational field of the moon where the passengers can make scientific observations, perhaps land alive, and then return to earth--all that constitutes a wild dream worthy of Jules Verne. I am bold enough to say that such a man-made voyage will never occur regardless of all future advances."
Lee deForest, American radio pioneer ; 1957
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| Number | Title | Issue Date |
| 7721650 | Modular time delay for actuating wellbore devices and methods for using same An apparatus for controlling a wellbore energy train may include a firing head, a detonator cord associated with the firing head, and a plurality of serially aligned modules. Each module may include an enclosure, a first portion of a high order detonation material p... | 05/25/2010 |
| 7707939 | Method of blasting Methods of blasting rock are disclosed and claimed in which blast holes are arranged in group of 2 to 7 blast holes. Within each of the groups, adjacent columns of explosive material (12) are actuated within 5 ms of one another Initiation of blasting between ... | 05/04/2010 |
| 7673566 | Method for use in a wellbore An apparatus for use in a wellbore comprises a heat insulating container having an inner space and having a structure defining a hollow containing a vacuum. The apparatus further comprises a reflective layer arranged on a surface of the heat insulating container to ... | 03/09/2010 |
| 7481166 | Heat insulating container for a detonator An apparatus for use in a wellbore comprises a heat insulating container having an inner space and having a structure defining a hollow containing a vacuum. The apparatus further comprises a reflective layer arranged on a surface of the heat insulating container to ... | 01/27/2009 |
| 7406918 | Method of blasting A method of blasting in which rock pile profile associated with a blast field is controlled by precise control of the detonation delay times between and/or within individual blastholes in the blast field, in combination with the control of one or more other blast pa... | 08/05/2008 |
| 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 detonates upon receiving a firing signal transmitted by a surface source. In... | 06/17/2008 |
| 7370583 | Detonator system and method in connection with the same A method for wirelessly transmitting data to a control unit, such as a blasting machine, selected from a plurality of control units from an operating device selected from a plurality of operating devices, and a system intended for the method. The control unit is con... | 05/13/2008 |
| 7347145 | Dynamic baselining in current modulation-based communication Dynamic baselining of current modulation-based talkback from a slave device to a master device in a system such as an electronic blasting system, wherein the dynamic baselining enhances communication integrity under conditions of environmental noise and the like. Wi... | 03/25/2008 |
| 7331291 | Self-supporting air tube for blasting A self-supporting air tube for blasting and method of blasting rock using the air tube. The air tube includes an air bladder, a pair of support wings and an inlet. The air bladder has a diameter smaller than that of a blasting hole and extends longitudinally. The su... | 02/19/2008 |
| 7327550 | Frequency diversity remote controlled initiation system A blasting system includes a wireless link between a blast controller and a plurality of electronic detonators. Each detonator includes a respective electronic initiator and an explosive charge. Charge storage devices of the initiators are chargeable by a carrier of... | 02/05/2008 |
| 7322293 | Device and system for identifying an unknow or unmarked slave device such as in an electronic blasting system A system such as an electronic blasting system, and a slave device for use in the system, in which a command is issued by a master device to all slave devices connected to the system, causing all slave devices that have not been identified to the master device to re... | 01/29/2008 |
| 7237353 | Muzzle break with gas relief membrane for an underwater gun A muzzle break for a gun comprising a baffle, a series of slots in the housing of the muzzle break in which the slots exhaust gas of a pressure wave deflected by the baffle during firing of the gun. A membrane seals the slots for underwater use and is separable by t... | 07/03/2007 |
| 7228907 | High energy gas fracturing charge device and method of use A high energy gas fracturing device, adapted to be lowered into a well. The device comprises a closed tube made of strong material, sized to fit into the well and having at least one sidewall, which defines a set of openings. A set of closure elements seal the openi... | 06/12/2007 |
| 7228906 | Propellant ignition assembly and process Method and apparatus for stimulating a subterranean formation that is penetrated by a well bore in fluid communication with the formation. At least one length of propellant is assembled with at least one shaped explosive charge that is aimed axially along the well b... | 06/12/2007 |
| 7156023 | Method for installing an ignition system, and ignition system When an ignition system is installed, the spatial position of an ignition device (5a to 5g) in relation to the surrounding, its geographical position, is as yet not determined. The user is required to exercise extreme caution in order to ... | 01/02/2007 |
| 7146912 | Flexible detonator system An electronic detonator system includes a control unit, a plurality of electronic detonators and a bus which connects the detonators to the control unit. Each electronic detonator includes a number of flags which may assume either of two possible values, each flag i... | 12/12/2006 |
| 7121340 | Method and apparatus for reducing pressure in a perforating gun An apparatus for reducing the post-detonation pressure of a perforating gun, the apparatus including a perforating gun carrying at least one explosive charge, wherein when the explosive charge is detonated the explosive charge produces a pressurized detonation gas, ... | 10/17/2006 |
| 7107908 | Firing-readiness diagnostic of a pyrotechnic device such as an electronic detonator Firing-readiness diagnostics in an electronic pyrotechnic device such as an electronic detonator or an electronic blasting system thereof. The diagnostics may include a check for any incompatible attached devices, a resistance or continuity check of an ignition elem... | 09/19/2006 |
| 7100511 | Dual redundancy system for electronic detonators A detonator assembly (10) comprising a housing (12) disclosed and claimed. The assembly comprises an main circuit (11) comprising an electrically operable fuse (16) located in the housing. The assembly further comprises at least a first r... | 09/05/2006 |
| 7086334 | Staggered charging of slave devices such as in an electronic blasting system Selective, staggered charging of individual slave devices in a system at different times, such as electronic detonators in an electronic blasting system, so as to prevent excessive voltage drop on the bus. The staggered charging may be obtained through a clock-drive... | 08/08/2006 |
| 7082877 | Current modulation-based communication for slave device Current modulation-based talkback in a system in which the background noise in the level of current draw is minimized such that the talkback is effected with a desirably high signal-to-noise ratio, such as by the master device holding the system voltage low such tha... | 08/01/2006 |
| 7073589 | System for fracturing wells using supplemental longer-burning propellants A system for fracturing wells uses a primary propellant charge to initially produce pressures within the well in excess of the maximum fracture extension pressure of the surrounding formation, but below that which would cause damage to the well. A supplemental prope... | 07/11/2006 |
| 7054131 | Pre-fire countdown in an electronic detonator and electronic blasting system An electronic detonator such as is used in electronic blasting systems, utilizing a pre-fire countdown, during which time other commands may be issued such as to conduct diagnostic tests or other measures to ensure more reliable and/or safer firing. ... | 05/30/2006 |
| 7036594 | Controlling a pressure transient in a well A system for controlling a dynamic pressure transient in a well during operations to provide fluid communication between the wellbore and adjacent formation. A method includes determining the characteristics of an adjacent formation, selecting a perforating tool for... | 05/02/2006 |
| 7017494 | Method of identifying an unknown or unmarked slave device such as in an electronic blasting system A system, for example an electronic blasting system, in which a command is issued by a master device to all slave devices connected to the system, causing all slave devices that have not been identified to the master device to respond with identifying information an... | 03/28/2006 |
| 7013807 | Current modulation-based communication for slave device Current modulation-based talkback in a system in which the background noise in the level of current draw is minimized such that the talkback is effected with a desirably high signal-to-noise ratio, such as by the master device holding the system voltage low such tha... | 03/21/2006 |
| 6966262 | Current modulation-based communication from slave device Current modulation-based talkback in a system in which the background noise in the level of current draw is minimized such that the talkback is effected with a desirably high signal-to-noise ratio, such as by the master device holding the system voltage low such tha... | 11/22/2005 |
| 6959765 | 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 housing as a singular unit. Electrically initiated exploding wire detona... | 11/01/2005 |
| 6955217 | Method and apparatus for a tubing conveyed perforating guns fire identification system using fiber optics A method and apparatus for determining whether a tubing conveyed perforating (TCP) gun has fired by detecting a change in characteristics of the flow of an oil well. A method and apparatus detects the presence of fluorescent tracer dye to determine whether or not a ... | 10/18/2005 |
| 6941870 | Positional blasting system A blasting system facilitates the actuation of a plurality of programmable detonators according to a desired blasting pattern, to cause the discharge of a plurality of associated charges, by downloading to the detonators blasting information that can be automaticall... | 09/13/2005 |
| 6941871 | Faceted expansion relief perforating device The present invention is an improvement in the design of a perforating gun to perforate the casing in oil and gas wells. Perforating guns have a cylindrical body member with explosive charges at specified intervals designed to shoot outwardly through the body member... | 09/13/2005 |
| 6926096 | Method for using a well perforating gun The invention relates to a method to use a perforating gun in oil and natural gas wells, comprising: a perforating gun with a loading tube and explosive charge; the gun comprises: a first layer disposed over the loading tube and at least one outer layer in engagemen... | 08/09/2005 |
| 6910537 | Canister, sealing method and composition for sealing a borehole Method and composition for sealing a borehole. A chemically bonded phosphate ceramic sealant for sealing, stabilizing, or plugging boreholes is prepared by combining an oxide or hydroxide and a phosphate with water to form slurry. The slurry is introduced into the b... | 06/28/2005 |
| 6896059 | Components and methods for use with explosives An apparatus and method is provided to reduce interference resulting from activation of explosive devices. To reduce interference, one or more shock impeding elements are placed proximal one or more explosives to impede propagation of shock caused by detonation of t... | 05/24/2005 |
| 6817298 | Solid propellant gas generator with adjustable pressure pulse for well optimization A gas-generator is disclosed to intensify output of oil, gas, including gas from coal formations, or metals extracted by underground leaching by breakage and thermo gas chemical treatment of the critical formation zone with gaseous combustion products from a solid p... | 11/16/2004 |
| 6805056 | Method and apparatus for removing abandoned tubular members A method and apparatus for removing a tubular member (e.g., leg of an abandoned or obsolete fixed platforms in a marine environment) is provided. The apparatus includes a delivery system having a frame carrying explosive shaped charges. The frame includes charges ha... | 10/19/2004 |
| 6772105 | Blasting method Methods for evaluating drill pattern parameters such as burden, spacing, borehole diameter, etc., at a blast site are disclosed. One method involves accumulating the burden contributed by successive layers of rock and matching the accumulated rock burden to a target... | 08/03/2004 |
| 6758124 | Unique phasings and firing sequences for perforating guns A unique phasing pattern is provided that maximizes the effective perforation geometry of a wellbore. The improvement overcomes the problems associated with multi-phase guns of the past that failed to account for the fact that the gun rested on the low side of the c... | 07/06/2004 |
| 6679175 | Cartridge and method for small charge breaking The present invention is directed to a cartridge that includes a number of advantageous features. For example, the cartridge can include a bulk energetic material, an igniter located in a central portion of the cartridge body, and a low void space in the ... | 01/20/2004 |
| 6651564 | High energy explosive for seismic methods An improved seismic method comprises the steps of generating seismic waves by exploding an explosive composition in a subterranean formation, wherein the explosive composition comprises a first explosive material and an oxidizable metal material, and dete... | 11/25/2003 |
