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8185314 |
Method and system for determining dynamic permeability of gas hydrate saturated formations
A method and system for determining dynamic permeability of gas hydrate formations including deploying a tool within a wellhole configured for magnetic resonance measurements, determining...
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8185366 |
Methods for modeling, displaying, designing, and optimizing fixed cutter bits
In one aspect, the invention provides a method for modeling the performance of a fixed cutter bit drilling an earth formation. In one embodiment, the method includes selecting a drill bit and an...
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8175807 |
Estimating horizontal stress from three-dimensional anisotropy
A method for determining properties of a subterranean formation. The method includes determining at least one characterization parameter based on wave velocity measurement data, determining a...
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8170799 |
Method for determining in-situ relationships between physical properties of a porous medium from a sample thereof
A method for determining in-situ relationships between physical properties of a porous medium from a sample thereof includes acquiring a three-dimensional image of the sample and segmenting the...
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8165816 |
Fluid injection management method for hydrocarbon recovery
A method for controlling fluid injection parameters to improve well interactions and control hydrofracture geometries is provided. The method incorporates a systematic, transient analysis process...
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8145429 |
System and method for sampling and analyzing downhole formation fluids
A device for sampling fluid from an earth formation is disclosed. The device includes: an inlet port disposable in fluid communication with the fluid in a borehole; an injector including an...
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8126650 |
Method for determining physical properties of structures
Method for efficient inversion of controlled-source electromagnetic survey data to obtain a resistivity model of the subsurface of the survey area. The method extracts the dimensions and location...
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8126646 |
Perforating optimized for stress gradients around wellbore
A technique includes determining a stress tensor in a formation that surrounds a wellbore. The stress tensor varies with respect to the wellbore. The technique includes running a perforating charge...
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8126649 |
Methods for generating a distribution of optimal solutions to nondeterministic polynomial optimization problems
The present invention provides methods for generating a distribution of optimal answers to a nondeterministic polynomial optimization problem by providing a plurality of solutions comprising input...
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8126648 |
Method for predicting the best and worst in a set of non-unique solutions
Method for determining best and worst cases for values of model parameters such as porosity and shale volume fraction generated by non-unique matrix inversion of physical data such as seismic...
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8121790 |
Combining reservoir modeling with downhole sensors and inductive coupling
A method is disclosed of characterizing a well using a series of measurements taken along the sandface of that well in order to optimize a well model. The method may comprise providing a well model...
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8121789 |
Method for correcting the phase of electromagnetic data
Method for identifying, determining and correcting source-related phase errors in data from a controlled source electromagnetic survey by using data from ordinary survey receivers, i.e. without...
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8116979 |
System and method for determining a more accurate resistivity model of a geological formation using time-lapse well logging data
A system and a method for estimating a model of a geological formation are provided. The geological formation has a wellbore extending therethrough. The method includes obtaining a first...
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8117018 |
Determining structural dip and azimuth from LWD resistivity measurements in anisotropic formations
Cross-component measurements in combination with standard propagation resistivity measurements are processed to estimate the vertical and horizontal resistivities, relative dip and relative azimuth...
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8112228 |
Statistical correction for standoff in two-terminal imager operating in oil-based mud
An apparatus, method and computer-readable medium for estimating a resistivity property of an earth formation in a borehole filled with oil-based mud. The method includes conveying a logging tool...
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8099240 |
Blasting method
Methods for evaluating drill pattern parameters such as burden, spacing, borehole diameter, etc., at a blast site are disclosed. One method involves accumulating the burden contributed by...
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8095318 |
Method for estimating formation dip using combined multiaxial induction and formation image measurements
A method for determining dip of rock formations penetrated by a wellbore using multiaxial induction measurements and imaging measurements made from within the wellbore includes estimating dip from...
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8090555 |
Multi-attribute seismic characterization of gas hydrates
An appropriate rock physics model is chosen from well-log data and/or experience. The rock physics model is then used to generate a plurality of attribute values, including compression and shear...
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8090538 |
System and method for interpretation of well data
Well log data is assigned depositional labels by a soft computing method. A model is trained on an expert-interpreted well log by segmenting, assigning fuzzy symbols to the segments, and...
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8086408 |
Method for positioning a wire using sensor information
A method for positioning a wire having nodes and streamers is provided herein. The wire can be secured to tow lines secured to a floating vessel for detecting near surface geology formations. The...
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8082104 |
Method to determine rock properties from drilling logs
A method of identifying one or more rock properties and/or one or more abnormalities occurring within a subterranean formation. The method includes obtaining a plurality of drilling parameters,...
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8082105 |
Method and apparatus for measuring in-situ stress of rock using thermal crack
Disclosed is a method and apparatus for measuring in-situ stress in rock using a thermal crack. The method involves forming a borehole, cooling a wall of the borehole, applying tensile thermal...
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8078405 |
Method of estimating the permeability of a fracture network from a connectivity analysis
A method for optimizing the development of a fractured hydrocarbon reservoir wherein the network permeability is determined using a reliable compromise between numerical and analytical methods...
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8078403 |
Determining permeability using formation testing data
A method, system and computer program product for determining permeability of an earth formation of a reservoir are disclosed. A method may include: providing formation testing data of the earth...
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8077546 |
Method for monitoring a multi-layered system
A method for monitoring a multi-layered system below a surface comprising a slow layer and a fast layer; the method comprising: transmitting one or more seismic waves from one or more seismic...
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8060310 |
Geosteering in earth formations using multicomponent induction measurements
A multicomponent induction logging tool is used on a MWD bottomhole assembly. Multifrequency focusing that accounts for the finite, nonzero, conductivity of the mandrel is applied. Using separation...
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8055449 |
Determining fault transmissivity in a subterranean reservoir
To determine fault transmissivity in a subterranean reservoir, fault structures in the subterranean reservoir are identified, and elastic impedance data is computed from well log data and seismic...
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8055448 |
Imaging of formation structure ahead of the drill-bit
A downhole acoustic logging tool is used for generating a guided borehole wave that propagates into the formation as a body wave, reflects from an interface and is converted back into a guided...
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8055446 |
Methods of processing magnetotelluric signals
A method for processing magnetotelluric data to identify subterranean deposits is provided for. The data comprise the amplitude of alternating magnetic or electrical fields recorded over time in at...
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8050867 |
Data adaptive vibratory source acquisition method
Method for conducting a seismic survey (23) wherein the acquisition parameters are modified as the survey progresses using information (24) from sensors located to monitor structures and fixtures...
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8041510 |
Continuous reservoir monitoring for fluid pathways using microseismic data
A system and method monitor a hydrocarbon reservoir for drainage in volumetric three dimensions. Monitoring between wells is imperative for optimum reservoir management and is achieved by mapping...
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8036830 |
Resistivity imager in non-conductive mud for LWD and wireline applications
An apparatus, method and computer-readable medium for imaging an earth formation. A downhole assembly having a resistivity sensor is conveyed in a borehole penetrating the earth formation. The...
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8032311 |
Estimating gas-oil ratio from other physical properties
A method for characterizing a desired property of a fluid downhole is described. In some non-limiting examples, the method comprises receiving an input signal representing sound speed of a fluid...
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8024124 |
Determining maximum horizontal stress in an earth formation
The invention relates to a method for determining maximum horizontal stress in an earth formation. The method includes obtaining fast shear wave velocities (Vs1) and slow shear wave velocities...
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8024123 |
Subterranean formation properties prediction
A method for predicting subterranean formation properties of a wellsite. The method includes obtaining seismic data for an area of interest, obtaining an initial seismic cube using the seismic...
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8024125 |
Methods and apparatus to monitor contamination levels in a formation fluid
Apparatus and methods to monitor contamination levels in a formation fluid are disclosed. An example method involves obtaining first property data indicative of a first fluid property of a...
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8019548 |
Enabling analysis of a survey source signal using a time-based visualization of the survey source signal
To enable analysis of a signal associated with surveying a subterranean structure, a processing system receives a time series of the signal associated with surveying the subterranean structure. A...
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8010291 |
Processing measurement data that involves computing a derivative of the measurement data that represents a subterranean structure
To process measurement data representing a subterranean structure, a derivative of the measurement data collected by at least one survey receiver is computed, with respect to frequency. A response...
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8004932 |
Identification of stress in formations using angles of fast and slow dipole waves in borehole acoustic logging
Cross-dipole measurements are obtained in a borehole. By estimating a direction of polarization of the fast shear mode at low and high frequencies and comparing the estimated distances, a cause of...
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8005618 |
Logging while drilling system
A logging-while-drilling system for efficiently providing a reliable measurement of various petrophysical properties of subsurface earth formations. The logging-while-drilling system generally...
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7999695 |
Surface real-time processing of downhole data
A method and apparatus for controlling oil well drilling equipment is disclosed. One or more sensors are distributed in the oil well drilling equipment. Each sensor produces a signal. A surface...
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7996154 |
Methods and apparatus for analysis of downhole asphaltene gradients and applications thereof
A method and system for characterizing asphaltene gradients of a reservoir of interest and analyzing properties of the reservoir of interest based upon such asphaltene gradients. The analysis...
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7996153 |
Method and apparatus for formation testing
A method includes calculating a correction factor that uses a tool component volume change model to estimate a system volume change resulting from a change in the tool component. An apparatus...
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7991553 |
Method and system for removing effects of conductive casings and wellbore and surface heterogeneity in electromagnetic imaging surveys
Characterizing a reservoir with electromagnetic imaging surveys includes normalizing measured voltage data by transmitter moment, sorting the normalized voltage data into common receiver profiles,...
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7991555 |
Electromagnetic directional measurements for non-parallel bed formations
An orientation vector, referred to hereinafter as the “geosteering vector,” is directed to the more conductive formation area within the DOI of the tool and away from the more resistive for...
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7991556 |
Methodology and application of multimodal decomposition of a composite distribution
A method for analyzing formation data includes decomposing the formation data into simple components that can be used to reconstruct the formation data, wherein the decomposing is performed at a...
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7983846 |
Systems and methods for determining in-situ gas hydrate saturation
Systems and methods for determining in-situ hydrate saturation of hydrate-bearing formations using dielectric properties of gas hydrate amounts are described. In accordance with one aspect, a...
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7979216 |
Method for determining a gas compositional origin from carbon material thermal degradation
At least one type of carbon material susceptible to generate a gas G is selected. Then, a model is built from the carbon isotopic composition of a gas P generated by thermal degradation of this...
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7970545 |
Attaching drilling information to three-dimensional visualizations of earth models
A system and method for perceiving drilling learning through visualization is provided. In one embodiment using three-dimensional visualization of the earth model as a foundation, a new IT...
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7970544 |
Method and apparatus for characterizing and estimating permeability using LWD Stoneley-wave data
Stoneley-wave data acquired in the LWD environment are used to characterize/estimate formation permeability. Real-time Stoneley-wave time-delay/slowness and center-frequency/attenuation data are...
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