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| Number | Title | Issue Date |
| 7591343 | Apparatuses for generating acoustic waves An example apparatus for generating acoustic waves is disclosed. The example apparatus includes a housing, and at least one plate having a moment arm, wherein each plate couples to the housing. The example apparatus for generating acoustic also includes at least one... | 09/22/2009 |
| 7426439 | Method and apparatus for marine seismic data acquisition The present invention provides a method and apparatus for seismic data acquisition. One embodiment of the method includes accessing data acquired by at least two particle motion sensors. The data includes a seismic signal and a noise signal and the at least two part... | 09/16/2008 |
| 7424928 | Apparatus, system and method for flexibly coupling sensors to a downhole tool A downhole receiver for gathering seismic and sonic data from inside a borehole includes a substantially tubular housing adapted for axial connection to a tool string, and one or more sensors. A damping element is provided to flexibly couple each sensor to the tubul... | 09/16/2008 |
| 7377357 | Marine seismic acquisition method and apparatus A marine seismic source method capable of retaining low frequencies is disclosed. One embodiment of the method comprises a seismic source that generates an up-going wave and first down-going wave with opposite polarity. The up-going wave reflects off the ocean surfa... | 05/27/2008 |
| 7364007 | Integrated acoustic transducer assembly Acoustic transducers configured with integrated electronics technology are adapted to digitize signal data close to the transducer. The transducers are packaged with a reduced number of elements and sealed for exposure to harsh environments, without oil compensation... | 04/29/2008 |
| 7364008 | System for imparting mechanical impulse energy to the ground The invention relates to an apparatus and method for imparting a precise amount of impulse energy to be delivered to the ground. The apparatus includes an anvil for operative deployment against the earth a hammer operatively connected to the anvil for striking the a... | 04/29/2008 |
| 7357030 | Apparatus and methods for determining at least one characteristic of a proximate environment Methods and an apparatus for determining at least one characteristic of an environment are disclosed. A vibrational energy may be imparted into an environment and a magnitude of damping of the vibrational energy may be measured and at least one characteristic of the... | 04/15/2008 |
| 7348894 | Method and apparatus for using a data telemetry system over multi-conductor wirelines A data telemetry system for multi-conductor wirelines to enhance transmission of analog and digital signals with frequency content up to 100 kHz by assigning at least two conductors to a first terminal of a data transmittal means and to a first terminal of a data re... | 03/25/2008 |
| 7334661 | Acoustic logging tool sleeve An acoustic logging tool sleeve with a preferably discontinuous, alternating structure that is acoustically opaque in some zones, and acoustically transparent in others. The sleeve may be modular, with several stages connected together. The multiple stages provide a... | 02/26/2008 |
| 7325647 | Mobile system for seismic emission with fixed coupling devices, and method therefor Seismic emission system for use in an underground formation, using at least one seismic source movable successively in a plurality of prepared activation locations and method for implementing same. The system comprises for example a plurality of coupling devi... | 02/05/2008 |
| 7301852 | Methods of generating directional low frequency acoustic signals and reflected signal detection enhancements for seismic while drilling applications The present invention provides a method and apparatus for using an acoustic logging tool conveyed in a borehole in an earth formation for determining a characteristic of the formation. The method comprises using a first acoustic source for generating an acoustic sig... | 11/27/2007 |
| 7301724 | Transducing head Determining an error in position of at least two heads coupled to a piezoelectric material, and changing a potential applied to a piezoelectric material to reduce the error in position of the at least two heads. ... | 11/27/2007 |
| 7286937 | Estimating formation properties from downhole data Methods and systems for extracting formation properties from formation logging data is disclosed. A method includes obtaining a deconvolution filter; and processing the formation logging data using the deconvolution filter to produce estimates of the formation prope... | 10/23/2007 |
| 7260021 | Method of harmonic noise attenuation in correlated sweep data The present invention provides a method for harmonic noise attenuation in correlated sweep data in seismic exploration. The method includes forming a plurality of correlation data subsets using a plurality of sweep data sets and a correlation reference sequence. The... | 08/21/2007 |
| 7255006 | Measuring instrument A measuring instrument is provided, to which various ultrasonic sensors can be connected in a simple way. The measuring instrument has an electronic measuring instrument unit, to which various ultrasonic sensors can be connected, and having an apparatus for detectin... | 08/14/2007 |
| 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 |
| 7255196 | Windshield and sound-barrier for seismic sensors A system and method for reducing acoustic, wind or other background noise that may interfere with sensing of a seismic signal is provided. More specifically, a shield is provided to enclose a geophone and thereby protect it from harmful noise. The shield may compris... | 08/14/2007 |
| 7254999 | Permanently installed in-well fiber optic accelerometer-based seismic sensing apparatus and associated method Embodiments of the present invention include a fiber optic seismic sensing system for permanent downhole installation. In one aspect, the present invention includes a multi-station, multi-component system for conducting seismic reservoir imaging and monitoring in a ... | 08/14/2007 |
| 7218240 | Synthetically generated sound cues Communication systems and apparatus to allow a user to perceive the relative spatial location or present position of other elements of interest in a control space, such as the location of a speaker participating in a telephone conference or that of an aircraft carri... | 05/15/2007 |
| 7216737 | Acoustic isolator between downhole transmitters and receivers Apparatus and methods for acoustically isolating logging tool receiver and transmitter sections. One or more modular isolators is arranged between the receiver and transmitter sections. The modular isolators comprise a high tensile strength while also providing for ... | 05/15/2007 |
| 7210555 | Low frequency acoustic attenuator for use in downhole applications An acoustic attenuator includes a housing having an inner side surface which defines an interior chamber and at least one dampening member both physically and acoustically coupled to the housing and projecting into the interior chamber. Acoustic energy propagating w... | 05/01/2007 |
| 7203342 | Image feature extraction A method of extracting desired features from a cellular image including the steps of: (a) selecting an initial cell within the image; (b) selecting an additional cell, near the initial cell, appearing to be associated with a desired feature; (c) repeating step (b) f... | 04/10/2007 |
| 7182170 | Gerotor and bearing system for whirling mass orbital vibrator A gerotor and bearing apparatus for a whirling mass orbital vibrator which generates vibration in a borehole. The apparatus includes a gerotor with an inner gear rotated by a shaft having one less lobe than an outer gear. A whirling mass is attached to the shaft. At... | 02/27/2007 |
| 7178627 | Methods for use in detecting seismic waves in a borehole The invention provides methods and apparatus for detecting seismic waves propagating through a subterranean formation surrounding a borehole. In a first embodiment, a sensor module uses the rotation of bogey wheels to extend and retract a sensor package for selectiv... | 02/20/2007 |
| 7129834 | String wireless sensor and its manufacturing method A string wireless sensor 11 comprising a wireless sensor 13, incorporating the transmitting portion, which transmits electric signals by wireless and a string holder (polymer 12) which holds the wireless sensor at a certain distance. ... | 10/31/2006 |
| 7102961 | Installation of seismic survey devices in shallow, low-angle boreholes The specification discloses a system and related method for installing seismic sensors in shallow, low-angle boreholes for obtaining conventional three-dimensional and four-dimensional seismic surveys. Installing seismic sensors in shallow, low-angle boreholes remov... | 09/05/2006 |
| 7093490 | Ultrasonic flaw detecting method and ultrasonic flaw detector In order to make it possible in ultrasonic flaw detection to generate ultrasonic waves containing a main beam only by use of an array probe and clearly identify a defect in a specimen by use of images, an element pitch P (the distance between centers of adjacent ult... | 08/22/2006 |
| 7081754 | Metal detection system with a magnetometer head coupleable to conventional footware and method of use A metal detection system with a magnetometer head coupleable to conventional footware and method of use for facilitating hands-free detection of metals below a surface of the ground adjacent to a user. The metal detection system with a magnetometer head coupleable t... | 07/25/2006 |
| 7079449 | Methods and systems for low frequency seismic and infrasound detection of geo-pressure transition zones Methods for determining the existence and characteristics of a gradational pressurized zone within a subterranean formation are disclosed. One embodiment involves employing an attenuation relationship between a seismic response signal and increasing wavelet waveleng... | 07/18/2006 |
| 7048089 | Methods and apparatus for use in detecting seismic waves in a borehole The invention provides methods and apparatus for detecting seismic waves propagating through a subterranean formation surrounding a borehole. In a first embodiment, a sensor module uses the rotation of bogey wheels to extend and retract a sensor package for selectiv... | 05/23/2006 |
| 7042801 | System for geophysical prospecting using induce electrokinetic effect Methods are disclosed employing seismic waves having infrasonic frequencies in the range of about 0.1–20 Hz for generating electromagnetic waves of similar infrasonic frequency in hydrocarbon bearing subterranean formations located at depths up to about 5000 meter... | 05/09/2006 |
| 7032707 | Acoustic isolator 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... | 04/25/2006 |
| 7028806 | Acoustic isolator for downhole applications An apparatus for performing acoustic investigations while drilling a borehole in a subsurface geological formation comprises a longitudinally extending assembly conveyed in the borehole on a drilling tubular. The assembly and the drilling tubular have a drilling flu... | 04/18/2006 |
| 7026951 | Data telemetry system for multi-conductor wirelines An improved data telemetry system for multi-conductor wirelines to achieve satisfactory transmission of analog and digital signals with frequency content up to 100 kHz by assigning at least two conductors to a first terminal of a data transmittal means and to a firs... | 04/11/2006 |
| 6999021 | Method and apparatus for detecting, mapping and locating underground utilities The method and device for locating underground utilities within an area includes traversing the area with a plurality of underground utility sensors and obtaining area location data to locate the area traversed. The sensor data and area location data are used to map... | 02/14/2006 |
| 6985815 | Instantaneous spectral analysis A method of seismic data processing is described in which a particular wavelet is selected from a plurality of wavelets as being most characteristic of a received seismic signal. A subtracted signal can be determined by subtracting a weighted signal of the particula... | 01/10/2006 |
| 6951262 | Method and apparatus for suppressing waves in a borehole Methods and apparatus for suppression of wave energy within a fluid-filled borehole using a low pressure acoustic barrier. In one embodiment, a flexible diaphragm type device is configured as an open bottomed tubular structure for disposition in a borehole to be fil... | 10/04/2005 |
| 6937938 | Method and apparatus for interferometry, spectral analysis, and three-dimensional holographic imaging of hydrocarbon accumulations and buried objects A methods and apparatus for the detection and exploration of buried objects and hydrocarbons uses two separate signals having different frequency characteristics combined to enable interferometric analysis and imaging systems including radar, sonar, seismological, a... | 08/30/2005 |
| 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 |
| 6899197 | Method and apparatus for absorbing acoustic energy An acoustic logging tool including an elongated body, one or more acoustic transmitters, one or more acoustic receivers, and a broadband acoustic absorption region. A substantial portion of the broadband acoustic absorption region is between the transmitter and the ... | 05/31/2005 |
