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WO/2006/011899A1 |
An inspection system for screening items for nuclear material, such as may be concealed in containerized cargo, suitcases or other containers. The system employs microgravitometers to sense perturbations in the gravitational field such a...
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WO/2005/088346A1 |
A method and system for evaluating geophysical survey data is provided. Two neighboring flight paths of a geophysical survey are likely to have geophysical characteristics in common because neighboring flight paths cover geographic areas...
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WO/2005/076042A1 |
The present invention regards an apparatus and a method that allow the measurement of the acceleration of gravity with high sensitivity and accuracy, and with a spatial resolution of a few microns, thanks to the use of ultracold fermioni...
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WO/2005/060644A2 |
A gravitational wave generating device comprising an energizing means such as a particle or electromagnetic beam (1), which act upon energizable elements such as molecules, atoms, electrons, nuclei or nuclear particles (11) in order to c...
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WO/2005/054901A1 |
In order to improve the reliability and accuracy of gravity quantum effects recording, the measurements of the relative intensity of gravity is carried out in the centre between masses having variable values, one of which is placed under...
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WO/2005/010558A1 |
The invention relates to gravitational-wave astronomy, in particular to recording gravitational waves. In order to increase the efficiency, mirrors are arranged at an angle of 45° with respect to the internal side of a system. A second ...
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WO/2005/003818A1 |
The invention relates to gravity-wave astronomy, in particular to recording low-frequency gravity waves. The essence of said invention lies in that a gravity constant is measured by means of a torsion balance comprising at least two beam...
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WO/2004/100174A2 |
A gravitational wave generating device (1) is positioned on one side of a material object (2) and a gravitational wave detection device (5) is positioned on the other side. The intervening material object's texture and internal structure...
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WO/2004/099816A2 |
The properties of a water-lain sedimentary deposit may be predicted at any location from a contour of constant deposit thickness. One embodiment of the method comprises (a) determining an outline of constant deposit thickness in a measur...
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WO/2004/093521A2 |
A method to determine the properties of a water-lain sediment body (16) from a measurement of grain size distribution and deposit thickness at one location in the deposited sediment body. Using method modeling steps to determine the flow...
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WO/2004/086091A2 |
Techniques for using gravity in applications such as drilling and logging. Techniques are present for (1) gravity well logging using gravity sensors arrays; (2) creating density pseudosections using gravity measurements; (3) performing G...
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WO/2004/022865A2 |
A method and system of isolating a structure (1) and soil mass (2) from earthquake induced vibration by inducing soil liquefaction beneath a structure (1) during an earthquake event, by monitoring local seismic precursor events, such as ...
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WO/2004/020942A1 |
The invention concerns an inertial sensor or an actuator based on diamagnetic levitation, said inertial sensor or actuator comprising support means serving as main support body for an inertial sensor or for an actuator, a two dimensional...
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WO/2004/016476A1 |
The invention relates to a method and an arrangement for the classification of objects occupying a seat (4), especially for controlling the triggering of retaining systems in vehicles (5) in a reliable manner. According to the invention,...
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WO/2004/003594A1 |
A method for geographical surveying includes the steps of determining an observation grid (24) comprising observation points (22) above a solution (16) volume in the ground; making gravitational measurements at the observation points (22...
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WO/2003/079052A1 |
Gravity gradiometers (or gravity gradient instrument, GGI) measure one or more components of the gradient of gravity which is expressed as the gradient of a gravity vector. One or more feedback loops extend from the instrument output to ...
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WO/2003/076970A1 |
A method includes measuring an acceleration along an input axis (62a) of an accelerometer mounted to a gradiometer disc, the accelerometer having a coordinate axis that is parallel to a spin axis (Za) of the disc, and includes calculatin...
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WO/2003/027715A1 |
An apparatus for the measurement of quasi-static gravity gradients, comprising: a flexible string (1); and output means for producing an output which is a function of said gravity gradients; and wherein the string is fixed (2, 2') at bot...
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WO/2003/023447A2 |
The invention is a method for determining a parameter of interest of a region of interest of the earth using tensor data. At least one component of potential fields data (401) is measured at a plurality of locations over a region of inte...
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WO/2002/103399A1 |
This invention concerns gravity gradiometers for airborne surveys for minerals. The gravity gradiometer comprises an inertially stabilised platform, a rotor that is between 0.4 and 1.5 m in diameter mounted in the stabilised platform, an...
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WO/2002/103398A1 |
This invention concerns an aircraft equipped for conducting airborne gravity surveys. In another aspect it concerns a process for creating airborne gravity surveys. The aircraft is equipped to perform the method using measured attitude d...
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WO/2002/095451A1 |
The inventive method for generating and receiving gravity waves in a continuous harmonic mode consists in forming longitudinal waves in a vacuum by producing compression and decompression zones according to harmonic law, periodically red...
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WO/2002/044757A2 |
A gravity gradiometer is combined with a two-stage actively controlled isolation system. The gravity gradiometer and two stage isolation system may then be mounted within (or on) a mobile vehicle such as, for example, an aircraft. It has...
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WO/2001/079892A1 |
A method of determining changes in the boundary interface in a sub-surface oil reservoir between the to-be-recovered oil and a driveout fluid, such as steam, uses time-displaced gravity gradient measurements to provide an indication of t...
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WO/2000/012966A1 |
The invention is a method for determining gravity in an inertial navigation system which periodically produces and stores in memory position coordinates. The method comprises the steps of (a) retrieving the most recently determined posit...
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WO/1999/060425A1 |
A one-armed torsion balance consisting of a rigid frame in which several vertically stretched fibres are placed. Said fibres are secured to one end of the lever arm; a test body is placed on the other end of the lever arm. The fibres exe...
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WO/1999/059002A2 |
Gravity gradient measurements taken by an accelerometer type gradiometer are optimized by tilting the measuring plane of the instrument by a selected angle above and below the horizontal to obtain data that can be differenced or otherwis...
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WO/1999/058816A1 |
A hydrocarbon reservoir undergoing secondary recovery is subject to a first and then at least a second gravity gradient survey in which a gravity gradiometer takes gradient measurements on the surface above the reservoir to define succes...
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WO/1999/032906A1 |
A measuring device such as a gravity gradiometer has a levitation coil (26) and a float body (12). The float body (12) is capable of being magnetically levitated by the coil (26) on a levitation axis (L) about which angular movement of t...
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WO/1998/057197A1 |
The invention concerns improvements in the performance of a mobile gravity gradient instrument (GGI). Gravity gradiometers measure one or more components of the gradient of gravity which is expressed as the gradient of a gravity vector, ...
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WO/1998/057196A1 |
This invention concerns improvements to gravity gradient instruments (GGI) and in particular to the accelerometers that are paired within these instruments. Accelerometers (1) have a proof mass (2) suspended by a spring (3) within a magn...
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WO/1998/050681A1 |
This invention provides a method for controlling production operations using fiber optic devices. An optical fiber carrying fiber-optic sensor is deployed downhole to provide information about downhole conditions. Parameters related to t...
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WO/1998/050680A2 |
The present invention provides systems utilizing fiber optics for monitoring downhole parameters and the operation and conditions of downhole tools. In one system fiber optics sensors are placed in the wellbore to make distributed measur...
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WO/1998/015850A1 |
The present invention provides a method for forming wellbores. In one method, one or more wellbores are drilled along preplanned paths based in part upon seismic surveys performed from the surface. An acoustic transmitter conveyed in suc...
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WO/1998/015852A1 |
The present invention pertains to an automatic driving and working m/c driven by the gravitational and rotational forces, intended to generate oscillations and swingings in precession paths of micro- and nanodimension, as well as to an i...
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WO/1998/007046A1 |
The invention concerns a method for geodetic surveying and/or earth imaging, characterised in that a radio satellite signal reflected on the ground is picked up by a shaped-beam antenna (2) and this signal is processed, with a reference ...
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WO/1997/041459A1 |
A gravity gradiometer (1) comprising first (2) and second proof masses (4) and means (13) for providing simultaneous free flight of the proof masses under the influence of the gravitational force in which the gradient is to be measured a...
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WO/1996/010759A1 |
Apparatus for measuring gravitational fields comprising a superconducting string (1) fixed at both ends and forming part of a closed superconducting loop inductively coupled to two driving solenoids (Ld1, Ld2). Displacement of the string...
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WO/1996/007113A1 |
The invention relates to a device and a process for gravitation measurement with an acceleration sensor fitted on a moving support, a satellite navigation receiver and a computing unit in which use may be made of several acceleration sen...
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WO/1995/025266A1 |
A gravity meter (10) has a portable housing (12) for holding a corner cube retroreflector that can be dropped within the housing. The housing also holds a laser (38) and an optical fiber (74) having a first end in light communication wit...
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WO/1995/005576A1 |
A system for compensating for horizontal common-mode acceleration and tilt on a moving platform including a laboratory motion isolation table or borehole logging probe, by transforming horizontal accelerations of the platform into vertic...
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WO/1995/005614A1 |
A gravity gradiometer capable of obtaining the vertical component Tzz of the gravity gradient tensor out of the two horizontal components Txx and Tyy based on Laplace equation: Tzz = - (Txx + Tyy) comprises a single disc, and two pairs o...
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WO/1995/005615A1 |
A system for conducting an air-borne gravity survey of earth formations along the flight path of a helicopter or any other aircraft comprises an acceleration/gravity sensor assembly (AGSA) which includes at least one inertial measurement...
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WO/1994/016296A1 |
A very low amplitude microvibration sensing device, comprising an optical cavity (8) consisting of a glass plate (11) sandwiched between two three-dimensional interferometric arrays (9, 10) and contacting a body in which microvibration i...
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WO/1994/013976A1 |
Mechanical linear guide for making a body move in an axial direction, comprising a system which is preferably made up of reinforced leaf springs and/or hole-type hinges, and which is rotationally symmetrical about an axial direction and ...
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WO/1994/009384A1 |
A method of monitoring short-term and long-term deformation changes in a geological space and predicting geodynamic events, such as earthquakes, landslides, dilatations and subsidence events, in a region, said method comprising the steps...
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WO/1991/002444A1 |
The invention is a neutral atom (and/or molecule) matterwave interferometer (and/or set of interferometers) that can be used as an ultra-sensitive inertial and/or gravity sensor. A pair of interferometers with different energies and/or m...
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WO/1991/000414A1 |
A method is disclosed for determining a component of the response of a reservoir to tidal forces (such as the amplitude of variation or delay time) in a hydrocarbons reservoir. That method comprises measuring a variable responsive to tid...
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WO/1990/007131A1 |
A gravity gradiometer for measuring off-diagonal components of the gravitational gradient tensor includes a housing comprising a pair of electromagnetic shield enclosures (22, 23) arranged one inside the other, and a body (25) including ...
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WO/1989/011666A1 |
Apparatus and method for vertically aligning an acceleration sensitive axis of a gravity measurement device (10). The gravity measurement device (10) includes an accelerometer (68), which rotates about a gimbal shaft (62) within a gimbal...
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