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An armor with rollers is provided that enables a user to move in all positions by rolling on a hard and smooth surface while constantly varying his bearing points on the ground.
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| Number | Title | Issue Date |
| 7436324 | Maritime port inspection and ingress control A marine port monitoring system including an inspection apparatus, either fixed or mobile, for intercepting cargo vessels entering the port. The system includes sensors placed in a shipping channel for examination of a hull of a passing vessel to detect externally m... | 10/14/2008 |
| 7327634 | Rotary pulser for transmitting information to the surface from a drill string down hole in a well A rotary pulser for transmitting information to the surface from down hole in a well by generating pressure pulses encoded to contain information. The pressure pulses travel to the surface where they are decoded so as to decipher the information. The pulser includes... | 02/05/2008 |
| 7289038 | Underwater sound radiation apparatus A plurality of actuators are provided at predetermined intervals on the reverse surface of a predetermined side wall of a swimming pool. When an electric signal corresponding to a sound to be propagated in the water is given to the actuators, the electric signal is ... | 10/30/2007 |
| 7257050 | Through tubing real time downhole wireless gauge A telemetry system having: a pipe; a SCADA box acoustically coupled to the pipe; and a gauge inserted in the pipe, the gauge comprising: an acoustic wave generator; a coupler mechanically connected to the acoustic wave generator, wherein the coupler is engageable an... | 08/14/2007 |
| 7253401 | Spectral gamma ray logging-while-drilling system A method for determining concentrations of naturally occurring radioactive elements in earth formation by analysis of gamma ray energy spectra measured by at least one gamma ray detector while the borehole is being drilled. Gain of the gamma ray detector is controll... | 08/07/2007 |
| 7254493 | Pressure transducer based fluid velocity sensor The invention consists of a pressure transducer based air velocity sensor that has been optimized for use in metal ducts. The fluid flow velocity is determined by measuring the propagation delay of a direct path pressure wave signal transmitted through the fluid as ... | 08/07/2007 |
| 7250873 | Downlink pulser for mud pulse telemetry A mud pulse telemetry system comprises a surface located fluid supply line having a drilling fluid flowing therein. A non-venting pulser is disposed in the drilling fluid in the supply line, and the non-venting pulser is adapted to generate pressure fluctuations in ... | 07/31/2007 |
| 7209407 | Seismic data acquisition system A seismic survey system having remote acquisition modules (RAMs) for acquiring seismic signals and communicating with a central recording system (CRU) via a network of cables, other RAMs, and line tap units (LTUs), arranged in a matrix of receiver lines and base lin... | 04/24/2007 |
| 7201231 | Apparatuses and methods for deploying logging tools and signalling in boreholes The apparatus includes a pump for circulating pressurized fluid in a wellbore. A control device controls the pump which a conduit interconnects to the wellbore. A downhole transducer detects changes in fluid pressure at a downhole location and generates signals acco... | 04/10/2007 |
| 7173542 | Data relay for casing mounted sensors, actuators and generators A casing sensor and methods for sensing using a casing sensor are disclosed. The casing sensor includes a casing shoe and a sensor coupled to the casing shoe. A casing data relay includes a downhole receiver coupled to a well casing and a transmitter coupled to the ... | 02/06/2007 |
| 7108081 | Instrumented internal blowout preventer valve for measuring drill string drilling parameters An oil and gas well drilling system is provided that includes a torque drive system having an output shaft and a drill string rotated by the torque drive system. An instrumented internal blowout preventer valve is connected between the torque drive system output sha... | 09/19/2006 |
| 7046165 | Method for collecting geological data ahead of a drill bit A casing sensor and methods for sensing using a casing sensor are disclosed. The casing sensor includes a casing shoe and a sensor coupled to the casing shoe. A casing data relay includes a downhole receiver coupled to a well casing and a transmitter coupled to the ... | 05/16/2006 |
| 6915875 | Acoustic isolator for downhole applications A plurality of heavy mass irregularities attached to an inner wall of the drill collar attenuate waves traveling through the collar. The plurality of heavy mass irregularities are spaced and sized for the maximum attenuation of acoustic pulses in a predetermined fre... | 07/12/2005 |
| 6880634 | Coiled tubing acoustic telemetry system and method System, apparatus, and method of telemetering downhole sensor information to the surface while operations are performed in an oil or gas well using coiled tubing. Data are transmitted on coiled tubing as digital signals encoded in acoustic signals. In one implementa... | 04/19/2005 |
| 6879848 | Method and apparatus for alerting an operator of an incoming cellular or portable phone call A method and apparatus for notifying a user of an incoming cellular telephone call are provided. The apparatus includes a cellular telephone body having at least a back surface, a first transducer positioned within said cellular telephone body perpendicular to the b... | 04/12/2005 |
| 6781520 | Motion sensor for noise cancellation in borehole electromagnetic telemetry system An electromagnetic borehole telemetry system providing improved signal to noise ratio. Adaptive filters use noise channels as references to remove noise from the signal channel. Improved sensors provide noise channels with reduced signal content. Motion sensors are ... | 08/24/2004 |
| 6714138 | Method and apparatus for transmitting information to the surface from a drill string down hole in a well A method and apparatus for transmitting information to the surface from down hole in a well in which a pulser is incorporated into the bottom hole assembly of a drill string that generates pressure pulses encoded to contain information concerning the drilling operat... | 03/30/2004 |
| 6624759 | Remote actuation of downhole tools using vibration A communication system is disclosed enabling communication from a surface location to a downhole location where instructions communicated are executed. The system employs accelerometers to sense vibrations traveling within the annulus fluid or the tubing ... | 09/23/2003 |
| 6480118 | Method of drilling in response to looking ahead of drill bit A method for improving ROP and reducing hazards in drilling subterranean wells by using an acoustical system 15 to look ahead of the drill bit 14, detects and analyzes geologic features ahead of the bit 14 which may be qualified as drilling hazards 17. De... | 11/12/2002 |
| 6404343 | Water leakage monitoring apparatus A water leakage detecting apparatus is capable of detecting water leakage of a water pipe precisely and at low cost. The water leakage monitoring apparatus includes vibration/electric converter for converting an acoustic vibration transmitted to a water p... | 06/11/2002 |
| 6308562 | Technique for signal detection using adaptive filtering in mud pulse telemetry A mud pulse telemetry adaptive noise canceler (ANC) employs a primary transducer and a reference transducer downstream from a position of the primary transducer. The primary transducer receives a primary signal based on a combination of a transmitted puls... | 10/30/2001 |
| 6137747 | Single point contact acoustic transmitter The invention is an acoustic transmitter that imparts vibratory stresses onto a signal propagation medium such as oil well tubing when actuated by an electric driver. In one embodiment, the acoustic transmitter utilizes a mechanical driver that includes p... | 10/24/2000 |
| 6091337 | High voltage contact monitor with built-in self tester A sensor system for use on drilling equipment to detect the presence of high voltages during horizontal or vertical drilling and providing an alarm signal corresponding to one of three possibilities: (1) the drilling tool hitting a high voltage line; (2) ... | 07/18/2000 |
| 5955966 | Signal recognition system for wellbore telemetry Methods and apparatus are described for recognizing wellbore telemetry signals, wherein a received analog telemetry signal is compared to a number of possible analog signals. The probability of representing the received signal is determined for each of th... | 09/21/1999 |
| 5892460 | Logging while drilling tool with azimuthal sensistivity An azimuthally sensitive LWD tool is disclosed, comprising a transmitting antenna, a receiving antenna, wherein the receiving antenna is azimuthally focused so as to be more sensitive to changes in magnetic flux in a particular azimuthal segment of the an... | 04/06/1999 |
| 5823261 | Well-pump alignment system An improved well-pump for geothermal wells, an alignment system for a well-pump, and to a method for aligning a rotor and stator within a well-pump, wherein the well-pump has a whistle assembly formed at a bottom portion thereof, such that variations in t... | 10/20/1998 |
| 5358035 | Control cartridge for controlling a safety valve in an operating well An operating well such as an oil well is provided with a safety valve in the tubing thereof. A control cartridge controls the safety valve under the command of control signals transmitted from the surface. The control cartridge includes a housing mounted ... | 10/25/1994 |
| 5283768 | Borehole liquid acoustic wave transducer A transducer is described especially designed for use in providing acoustic transmission in a borehole. The transducer includes a multiple number of magnetic circuit gaps and electrical windings that have been found to provide the power necessary for acou... | 02/01/1994 |
| 5202681 | Integral transducer housing and method A housing with a fluid flow bore is provided with an integral diaphragm forming a cavity within the housing to position the diaphragm adjacent the bore, for receiving sensors thereon to receive intelligence from the housing indicative of any one or all of... | 04/13/1993 |
| 5056067 | Analog circuit for controlling acoustic transducer arrays A simplified ananlog circuit is presented for controlling electromechanical transducer pairs in an acoustic telemetry system. The analog circuit of this invention comprises a single electrical resistor which replaces all of the digital components in a kno... | 10/08/1991 |
| 4905203 | Downhole doppler flowmeter A well logging system which monitors the flow rate of a fluid flowing in a borehole traversing an earth formation includes a sonde. A transmitter located in the sonde transmits acoustical waves into the fluid at a predetermined frequency. A receiver also ... | 02/27/1990 |
| 4854398 | Locating devices for soil displacement hammers A locating device for a soil displacement hammer is disclosed and comprises a cylindrical, radio wave-transparent housing which is releasably connected between an air line for the soil displacement hammer (mole) and the hammer itself so as to permit air c... | 08/08/1989 |
| 4852069 | Thin bed evaluation device The microstructure of thinly laminated earth formations is acoustically determined with a logging tool having an acoustical transducer pad mounted for measuring while in contact with the borehole wall.... | 07/25/1989 |
| 4797668 | Acoustic well logging system having multiplexed filter digitizing In an acoustic well logging system having an acoustic transmitter in a sonde and spaced acoustic receivers, an acoustic transmitter control circuit enabling transmission of high frequency pulses, acoustic receivers therefor, received signal frequency filt... | 01/10/1989 |
| 4796026 | Noise tool and method Apparatus for detecting acoustic disturbances include an electrical circuit for processing electrical signals generated by an acoustic sensor in response to acoustic disturbances. The processing circuitry converts the electrical data signals into output s... | 01/03/1989 |
| 4698631 | Surface acoustic wave pipe identification system A drill pipe identification system automatically provides an identification number for each drill pipe as the drill pipe is being lowered into or withdrawn from the well. The system has a SAW identification device which is mounted in a cylindrical cavity ... | 10/06/1987 |
| 4572322 | Finding distance to blowout using wellbore acoustic measurements A method for finding the distance between a blowout well and a relief well. The method comprises measuring the acoustic noise in the relief well at two or more locations and then calculating the distance to the blowout well.... | 02/25/1986 |
| 4458245 | Method and apparatus for exploring earth and rocky formations The length and width of fissures in a bore hole is determined by alternately flowing liquid into and out of the formation from an isolated zone of a bore hole, at different frequencies, and measuring the dynamic pressure of the flowing fluid. The length o... | 07/03/1984 |
| 4415895 | Well logging data transmission system A telemetering system provides improved cable utilization and bi-directional digital communication between a logging sonde and surface electronics over a single balanced transmission line of a multi-conductor logging cable, with significant signal crossta... | 11/15/1983 |
| 4390878 | Two receiver noise loggers Disclosed is a system for acoustic noise logging in a production well which includes up-hole components and down-hole components including at least two sonic detectors, the up-hole and down-hole components being linked together by a four-wire interconnect... | 06/28/1983 |
