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Matches 1 - 50 out of 464

Document Document Title
WO/2017/212272A1
A gravimeter or inertial sensor system and method of operating such a system is provided. The system comprises a variable frequency signal source (100, 101, 102) configured to provide first and second signals, a resonant sensor (103) con...  
WO/2017/191408A1
The invention relates to a pumped-down optical apparatus (1) including a vacuum chamber (2), the vacuum chamber including walls bounding a sealably closed interior space (5), wherein an internal surface of the walls (3, 4) includes a lay...  
WO/2017/135183A1
[Problem] To estimate a surface density distribution that allows application of terrain correction values having high spatial resolution, in which surface terrain, layer thickness, and density are taken into consideration, in analyzing a...  
WO/2017/131848A1
Example computer-implemented methods, computer-readable media, and computer systems are described for performing gravity modeling. In some aspects, survey data that includes gravity data of a rifted continental margin is accessed. A valu...  
WO/2017/131449A1
An electronic device is provided. The electronic device includes a display positioned on at least a surface of a housing of the electronic device, at least one sensor configured to sense a bend of the display and a mount of the electroni...  
WO/2017/111610A1
A system (100) for monitoring a field (20) under a body of water, wherein the system (100) comprises a reference station (112) and a plurality of permanent seafloor sensors (120, 121). Each permanent seafloor sensor (120, 121) is fixed r...  
WO/2017/111611A1
A device (110) for performing measurements on a seabed (3), comprises a chamber (111) containing a sensor (120) and a fluid (115) at a constant temperature and at an ambient pressure. This removes the need for calibration in large ranges...  
WO/2017/099727A1
Gravity surveys of subterranean formations may be based on the simultaneous measurement of gravity and its derivatives to produce a higher resolution formation map or wellbore log. For example, a method of performing a gravity survey may...  
WO/2017/049116A1
Embodiments of the present invention may be generally related to methods, devices, and systems which measure a gravitational field. The methods and devices may utilize an interferometer to measure tilt of a pendulum, where the tilt of th...  
WO/2017/025801A1
Systems and methods for calculating gravity and gravity gradient terrain effects. The method includes a step (1700) of receiving a digital relief model (DRM) and gravity and/or gravity gradient data recorded at observation stations; a st...  
WO/2016/138266A1
A gravitational radiation communication system. The system includes a gravitational radiation transmitter and a gravitational radiation receiver. Each of the transmitter and the receiver includes a first cylindrical superconducting cavit...  
WO/2016/132046A1
The invention relates to a method for measuring an external parameter (a) by means of atomic interferometry using two sets of atoms (11, 12) that belong to different species. Two measurements are taken simultaneously at the same location...  
WO/2016/132047A1
The invention relates to a method for measuring an external parameter (a) by atomic interferometry, using two sets of atoms (11, 12) that belong to different species. Two measurements are taken simultaneously at the same location, but in...  
WO/2016/097332A1
Coherent spectroscopic methods are described, to measure the total phase difference during an extended interrogation interval between the signal delivered by a local oscillator (10) and that given by a quantum system (QS). According to o...  
WO/2016/077915A1
An airborne gravity-based transducer is disclosed as two embodiments with similar physical structures but different operating principles. The first design includes a particle acting as an active interface characterized by internal vibrat...  
WO/2016/030435A1
An acceleration measuring device is disclosed, for use as a gravimeter or gradiometer for example. The device has a support and a proof mass, connected to each other by at flexures allowing displacement of the proof mass relative to the ...  
WO/2016/028189A1
The method and apparatus for remote gravimetric sounding relate to the field of geophysics and are intended for determining a resulting radius-vector of gravitational acceleration gz, the three-dimensional characteristic gφ thereof and ...  
WO/2016/022996A1
A gravimeter for measuring the gravitational field of the Earth without an inertial reference comprises accelerometer pairs disposed on a platform where the sensitive axis of each accelerometer is arranged on the platform to measure plum...  
WO/2016/019020A1
An apparatus for estimating gravitational properties includes an optical source, a first interferometer including a fixed reference reflector and a first reflector coupled to a first moveable mass, a second interferometer including the f...  
WO/2015/199683A1
A gravitational logging method includes obtaining gravitational field measurements from a permanent array of downhole or subsea sensor units. The method also includes inverting the gravitational field measurements as a function of positi...  
WO/2015/199684A1
A gravitational logging method includes optically obtaining gravitational field measurements from one or more downhole or subsea sensor units. The method also includes inverting the gravitational field measurements as a function of posit...  
WO/2015/152521A1
Disclosed is a method for measuring density change of an underground material. In order to measure density change of an underground material, a borehole is formed on the top portion of the underground material which is subjected to measu...  
WO/2015/143546A1
An absolute vector gravimeter and method of use is provided. The absolute vector gravimeter includes one or more single axis accelerometers, each capable of pointing in at least two directions and calculating an estimated gravity compone...  
WO/2015/127237A1
A method for rebalancing a group of accelerometers in a gravity gradiometer instrument (GGI) includes the steps of defining and implementing a number of group- wise actuation constrainment modes based on a design of the gravity gradiomet...  
WO/2015/104633A2
Systems and methods for to two dimensional gravity modeling with variable densities are disclosed. The methods may include a method of modeling the density of a subsurface formation is disclosed. The methods may include generating a plur...  
WO/2015/104633A3
Systems and methods for two dimensional gravity modeling with variable densities are disclosed. The methods may include a method of modeling the density of a subsurface formation. The methods may include generating a plurality of cells i...  
WO/2015/103608A1
A non-contacting spherical air bearing-based stable platform for use by a gravity gradiometer instrument (GGI) is provided by attaching a spherical ball-shaped bearing to a rotational stage of the GGI and integrating a concave spherical ...  
WO/2015/069254A1
A rotational gravity gradiometer includes a first member, a second member, a drive member and a motor. The first member is disposed above the second member orthogonal to and centered with respect to the second member. The first member in...  
WO/2015/065651A1
A hydrocarbon exploration method for determining subsurface properties from geophysical survey data. Rock physics trends are identified and for each trend a rock physics model is determined that relates the subsurface property to geophys...  
WO/2015/050734A1
A capsule comprising two non-directly contacting halves enables otherwise coupling loads between experiment and gauging to be re-routed through the outer-most portable body (e.g. a logging sonde housing) having substantial inertia, thus ...  
WO/2015/042754A1
A method for parsing and calculating performance of satellite gravity field measurement by low-to-low satellite-to-satellite tracking, comprising: acquiring a parameter of a gravity satellite system of low-to-low satellite-to-satellite t...  
WO/2015/042693A1
Apparatus and method for controlling a frequency of laser light based on a reference medium are disclosed. An exemplary method comprises controlling the frequency based on a comparison of a measured spectrum of a physical property associ...  
WO/2015/027299A3
The present invention relates to the problem of quantum gravity, and more particularly to registering quantum gravitational radiation. The essence of the proposed invention is that a non-spherical proof mass is prepared from a non-magnet...  
WO/2014/209152A1
Methods, systems, and devices for characterizing a water-flooded zone in an earth formation resulting from injection of water to the formation through an injector well borehole intersecting the formation. The method includes estimatin...  
WO/2014/176699A1
A bipartite sensor array comprising two portions capable of assembly into a single sensory system. A first portion comprises rigid bodies connected by elongate flexures and fitted with gravimetric tilt sensors. The elongate flexures are ...  
WO/2014/169318A1
A temperature control device for use with airborne measurement in geological and geophysical surveys. The device includes a thermally insulated housing for mounting into an airborne vehicle and within which electronic survey equipment is...  
WO/2014/163922A2
A gravity gradient is measured interferometrically from two polarized light beams having mutually different polarization planes which reflect from opposite surfaces of two freefalling test masses. The two polarized light beams project al...  
WO/2014/163922A3
A gravity gradient is measured interferometrically from two polarized light beams having mutually different polarization planes which reflect from opposite surfaces of two freefalling test masses. The two polarized light beams project al...  
WO/2014/163937A1
Incident differently-polarized light beams are separately directed and combined by one or two corner cube structures, each having one or two walls formed as a beam splitter. One incident light beam is passed, while the other incident lig...  
WO/2014/106811A3
A cold atom gravity gradiometer system includes a laser source that generates a laser beam that propagates along a propagation direction. The system further includes a reflector that reflects a portion of the laser beam and transmits ano...  
WO/2014/106811A2
A cold atom gravity gradiometer system includes a laser source that generates a laser beam that propagates along a propagation direction. The system further includes a reflector that reflects a portion of the laser beam and transmits ano...  
WO/2014/099865A1
Characterizing a parameter of interest relating to a formation intersected by a borehole. Methods may include estimating the parameter using at least one gravity measurement adjusted to account for a gravity field gradient associated wit...  
WO/2014/055071A1
In accordance with aspects of the present disclosure, techniques for monitoring subterranean sequestered CO2 are disclosed. Tools for gathering relevant data are disclosed, and techniques for interpreting the resultant data also disclose...  
WO/2014/047682A1
The present disclosure provides a method of processing gravity gradient data indicative of an output generated by an airborne gravity gradiometer that is moving along a flight path over a terrain. The method comprises the step of providi...  
WO/2014/040474A1
A low-temperature superconducting device for measuring gravity, comprising a low-temperature container (1), a refrigerating machine (2), a rotor chamber (4), a superconducting rotor (5), an upper levitation coil (6), a lower levitation c...  
WO/2014/018324A1
A gravity gradient is measured interferometrically from two light beams which each reflect from both of two freefalling test masses. The light beams project in beam arms which remain equal in length as the two test masses freefall except...  
WO/2014/018326A1
A test mass used for light beam interferometric gravity characteristic measurement has a center of mass located equidistant and colinear with optical center points of two oppositely reflecting retroreflectors. Rotation of the test mass a...  
WO/2014/007848A1
A gravity gradiometer having at least three differential accelerometers with a low response to linear accelerations and at least six angular accelerometers that give it the capability of measuring angular rates by integrating the angular...  
WO/2013/144503A1
An atom interferometer with differential inertial measurement comprises an atom source system (100) to supply several sets of atoms (11, 12) intended for acceleration measurements which are made simultaneously at different respective loc...  
WO/2013/112515A1
An apparatus and method for estimating reservoir connectivity using gravity estimates at a fluid contact for each of two or more boreholes. The method may include identifying fluid contacts in the boreholes. The method may include additi...  

Matches 1 - 50 out of 464