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WO/2012/061391 |
A method for processing seismic data. The method includes receiving the seismic data acquired at one or more receivers due to one or more marine vibroseis sources that emit one or more vibroseis sweeps. The method then applies a receiver...
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WO/2012/060974 |
NMR porosity measurements made in a gas free-formation are used to calibrate acoustic measurements. The calibration parameters are then used in conjunction with estimates of shale content to provide improved estimates of formation porosi...
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WO/2012/061125 |
Divergence data is received from a divergence sensor and seismic data is received from seismic sensors, where the divergence sensor and seismic sensors are part of a sensor assembly. A calibration term is computed based on combining the ...
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WO/2012/061735 |
The invention relates to seismic data acquisition in a marine environment with long streamers of hydrophone receivers towed by a boat. In a conventional acquisition program, the streamers follow straight behind the boat and when the boat...
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WO/2012/061135 |
A method and system that can be used for scanning underwater structures. The method and system allow a user to gain a better understanding of an underwater structure. For example, the method and system detect change(s) to an underwater s...
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WO/2012/058626 |
A method for characterizing a property of a subterranean formation including collecting well log and seismic data, inverting the data, processing for upscaled petrophysical parameters, constructing a flow model that generates saturation,...
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WO/2012/057740 |
A computer accepts dead-oil properties of a reservoir fluid sampled from a well. The dead-oil properties are the measured composition of the reservoir fluid after volatile components of the reservoir have substantially vaporized. The com...
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WO/2012/058257 |
A zero-offset VSP survey is carried out with spaced apart receivers located in a vertical wellbore. Spectra of the signals at the receivers following wavefield separation are estimated. An absorption coefficient is estimated using differ...
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WO/2012/053902 |
Advances in marine electromagnetic sounding systems for subsurface hydrocarbon detection have stimulated further research and development. More specifically, for high-resolution characterization of sub-surface structures and electrical r...
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WO/2012/054146 |
Disclosed is a method for detecting a pair of opposing breakouts in a borehole penetrating an earth formation. The method includes: conveying a downhole tool configured to perform measurements of a property of the earth formation; produc...
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WO/2012/054124 |
A system and method for characterizing structural uncertainty in a seismic analysis of features in a subsurface region includes obtaining seismic data including information representative of the features, performing a plurality of depth ...
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WO/2012/051480 |
In one aspect, an apparatus for use downhole is provided, which apparatus, in one embodiment, includes an acoustic transducer having a first member in pressure communication with a confined fluid, wherein a displacement of the first memb...
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WO/2012/051267 |
A technique includes processing first data indicative of a first image of a subsurface region of interest on a machine to generate second data indicative of a second image. The first image is derived from measurements of seismic waves, w...
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WO/2012/051563 |
A seismic vibrator has a baseplate composed at least partially of a composite material. The baseplate has a body composed of the composite material and has top and bottom plates composed of a metallic material. The top plate supports iso...
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WO/2012/051184 |
A method, apparatus and computer-readable medium for estimating sand production from an earth formation is disclosed. A grain-scale formation model of the earth formation is created, wherein a value obtained from the grain-scale formatio...
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WO/2012/047394 |
An embodiment includes determining whether first and second seismic sources are ready to perform seismic sweeps. When either of the first and the second seismic sources are determined to be unready to perform seismic sweeps, the method i...
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WO/2012/048175 |
A technique includes processing seismic data indicative of samples of at least one measured seismic signal in a processor-based machine to, in an iterative process, determine basis functions, which represent a constructed seismic signal....
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WO/2012/046206 |
Analysis of a seismic event, such as a microseismic event caused by hydraulic fracturing, comprises measuring seismic waves emitted by the event and converting the measurements into two values for magnitude of explosion or implosion and ...
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WO/2012/047860 |
A method and apparatus for estimating a time to failure of an electronic component used in a downhole environment is disclosed. A stress is applied to the electronic component to cause failure of a plurality of prognostic sensors associa...
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WO/2012/047384 |
Method for simultaneous full-wavefield inversion of gathers of source (or receiver) encoded geophysical data to determine a physical properties model for a subsurface region, especially suitable for surveys where fixed receiver geometry ...
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WO/2012/044475 |
A marine vibrator with improved seal is described. The marine vibrator includes a housing and piston within the housing for generating vibratory signals. The improved seal is comprised of a two-stage seal having a first seal disposed adj...
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WO/2012/044474 |
A technique includes receiving particle motion data acquired by particle motion sensors while in tow. The particle motion data are indicative of a seismic signal and a torque noise, and the particle motion sensors are oriented to modulat...
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WO/2012/044478 |
According to one or more aspects of the invention, a marine seismic survey method comprises towing at least two streamers below a sea surface forming a survey spread, each streamer comprising a survey sensor and a profiler; and at each p...
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WO/2012/044481 |
A technique enables measuring of the actual firing sequence times in a seismic survey application. The actual firing sequence times are then employed in simultaneous source resolution methods. For example, simultaneous seismic sources ma...
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WO/2012/044480 |
A method for processing seismic data. The method includes receiving the seismic data acquired at two or more sensors on a towed marine survey and regularizing the received seismic data into a spatial domain. After regularizing the seismi...
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WO/2012/041844 |
A remotely operated seismic source assembly comprising an Autonomous Submersible Vessel comprising a remotely controlled navigation system, a refueling probe, a combustion engine for propelling the vessel through a body of water, a compr...
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WO/2012/044479 |
A technique includes acquiring particle motion data from a plurality of particle motion sensors while in tow during a seismic survey. During the seismic survey, the particle motion data are processed without deghosting the particle motio...
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WO/2012/041834 |
An improved method of estimating an earth model utilizes an acoustic Full Waveform Inversion ( FWI ) of seismic data in a pseudo-time coordinate system, in which the earth model m(m͂) is parameterized with two lateral coordinates (x,y)a...
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WO/2012/043993 |
Disclosed is a device for estimating the cumulated absolute velocity of an earthquake. According to one embodiment, the device for estimating the cumulated absolute velocity of an earthquake of the present invention comprises a seismomet...
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WO/2012/042512 |
A vibrator, in which a hollow body (2) with two transverse end walls (5, 6) houses in sliding manner a first piston (10), which defines, inside the hollow body (2), a first chamber (17) communicating with an inlet (20) and bounded by a f...
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WO/2012/044476 |
An apparatus includes a streamer cable section and a unit. The streamer cable section includes an associated group of seismic sensors. The unit connects to an end of the streamer cable section and includes a steering device, a controller...
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WO/2012/039707 |
Various micro-sonic density imaging-while-drilling systems and methods are disclosed. In at least some forms, the micro-sonic logging tool is embodied in a drill collar having at least one stabilizer blade. One or more acoustic transmitt...
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WO/2012/039681 |
A vibration detector (100) is disclosed herein. In a first embodiment, the vibration detector (100) comprises a support member (300, 302) arranged to vibrate, and a sensor (207) arranged to detect a vibration frequency of the support mem...
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WO/2012/038647 |
According to the invention, elastic parameters, including density, pressure wave propagation speed, and/or shear in pervious layers located in a dense underground area along an array of horizontal positions, are estimated by inverting 4D...
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WO/2012/040328 |
Disclosed is a method implemented by a processor for imaging a formation penetrated by a borehole. The method includes: obtaining acoustic data in a depth-time domain using an acoustic downhole tool disposed at a depth in the borehole, t...
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WO/2012/039961 |
A system and method for generating images of a subsurface region of interest is provided. In one embodiment, a computer-implemented method of generating images related to a subsurface region of interest includes: accessing, via a central...
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WO/2012/039857 |
A seismic cable for use in land applications is described. The cable includes seismic sensors for measuring seismic signals reflected from subterranean or subsea formations. The cable may be deployed in trenches dug in the survey region ...
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WO/2012/039625 |
A system, method and apparatus providing uninterrupted cleaning of first and second parts of a deployed marine seismic streamer cable using one cleaner apparatus, the first and second parts located to respective sides of a bird attached ...
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WO/2012/036559 |
The invention is a marine geophysical sensor cable comprising a hose skin (1) generally filled with gel (3) and comprising electrical sensors comprising pairs of first and second sea water exposed electrodes (5a1, 5b1) connected to an el...
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WO/2012/037292 |
The present method provides spatial sampling of a seismic wavefield on the free surface of the earth at an effective spatial sampling denser than the physical layout of the sensors. The sensors are comprised of a sensing element for vert...
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WO/2012/036814 |
Systems and methods for carrying out seismic surveys and/or conducting permanent reservoir monitoring with autonomous or remote-controlled water vehicles, including surface and submersible vehicles, are described. Additional methods carr...
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WO/2012/035036 |
A method of predicting the pressure sensitivity of seismic velocity within reservoir rocks is presented. The method comprises defining the degree of cementation of rock as at least one of friable sand, partially cemented rock comprising ...
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WO/2012/036563 |
The present invention is a bridle line control winch (41, 42, 43, 51, 52, 53) for a deflector (1) for marine towing, with fore (10) and aft (20) double or triple bridle lines (11, 12, 13, 21, 22, 23) to attachment points (61, 62, 63, 71,...
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WO/2012/033919 |
A technique includes receiving first seismic data acquired by one or more receivers in response to energy produced by one or more seismic sources interacting with a subsurface feature. The first seismic data is indicative of measured ref...
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WO/2012/033905 |
Pairs of acoustic transducers positioned at different radial distances in a conduit are used to measure travel times of acoustic signals in opposite directions and inclined to the direction of a fluid flow in the borehole. These contrapr...
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WO/2012/033905 |
Pairs of acoustic transducers positioned at different radial distances in a conduit are used to measure travel times of acoustic signals in opposite directions and inclined to the direction of a fluid flow in the borehole. These contrapr...
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WO/2012/033919 |
A technique includes receiving first seismic data acquired by one or more receivers in response to energy produced by one or more seismic sources interacting with a subsurface feature. The first seismic data is indicative of measured ref...
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WO/2012/033684 |
Resistivity images obtained by an imaging device in a borehole having oil- based mud may be of poor quality due to standoff variations, leakage currents and random noise. By processing the data using steps including median filtering, ent...
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WO/2012/031216 |
In one aspect, the disclosure provides an apparatus for use downhole that includes at least one acoustic sensor. In one aspect, the acoustic sensor includes a chamber and an active element comprised of a quantum tunneling composite in th...
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WO/2012/030486 |
A method for determining positions and origin times of seismic events occurring in the Earth's subsurface includes accepting as input to the method signals recorded from a plurality of seismic sensors deployed above a subsurface volume o...
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