173440 ⎘
Details of seismic processing or analysis; Aspects of acoustic signal generation or detection; Signal detection; Receiver location Subsurface, e.g. in borehole or below weathering layer or mud line
SONIC THROUGH TUBING CEMENT EVALUATION
#2Blue-Shift Of Resonance Frequency To Detect Fluid Channel Behind Cemented Casing
#3CEMENT BONDING EVALUATION WITH A SONIC-LOGGING-WHILE-DRILLING TOOL
#4EVALUATING SUBSURFACE CONDITIONS
#5ACOUSTIC PHASED ARRAY SYSTEM AND METHOD FOR DETERMINING WELL INTEGRITY IN MULTI-STRING CONFIGURATIONS
#6SYSTEMS AND METHODS TO PREDICT FRACTURE HEIGHT AND RECONSTRUCT PHYSICAL PROPERTY LOGS BASED ON MACHINE LEARNING ALGORITHMS AND PHYSICAL DIAGNOSTIC MEASUREMENTS
#7INTEGRATED MODELING FOR SEISMIC SURVEY ACQUISITION PARAMETERIZATION
#8SYSTEMS AND METHODS FOR DEPLOYING SEISMIC LAND SENSORS
#9ENERGY BAND METHOD FOR PROCESSING ACOUSTIC DATA
#10SEISMIC MULTI-HORIZON TRACKING FRAMEWORK
#11SEISMIC EXPLORATION METHOD, SUBSURFACE MONITORING METHOD, SEISMIC EXPLORATION SYSTEM, AND SEISMIC SOURCE DEVICE
#12Sensor Deployment For Distributed Acoustic Sensing Interrogation In Subsea Applications
#13Computing A0 Mode Attenuation For Cement Evaluation In Cased Wells
#14SUBSEA OPTICAL AMPLIFICATION AND CIRCULATOR FOR OPTICAL SENSING
#15Blue-Shift Of Resonance Frequency To Detect Fluid Channel Behind Cemented Casing
#16DISTRIBUTED FIBER OPTIC SENSING AND DETECTION SYSTEMS AND METHODS FOR IMPROVED DRILLING OPERATIONS AND WELL CONTROL
#17COMPLETION AND WELL PLACEMENT OPTIMIZATION USING DISTRIBUTED FIBER OPTIC SENSING IN NEXT-GENERATION GEOTHERMAL PROJECTS
#18FIBER OPTICS ACOUSTIC STEERING FOR DIRECTIONAL DRILLING
#19SPATIAL VARIATIONS OF PORE PRESSURE
#20SLIM SONIC LOGGING TOOL WITH MULTIPLE MODULES FOR BOREHOLE RESONANCE MODE AND PITCH-CATCH MEASUREMENT
#21Method and system for measuring strain rate at a scale shorter than gauge length
#22CHARACTERIZATION SYSTEM AND METHOD FOR CASING LOADING USING ENTROPY ANALYSIS
#23CEMENT BOND EVALUATION IN A WELLBORE
#24Seismic acquisition system based on frequency domain expansion mems sensor
#25DRILLSTRING WITH ACOUSTIC CALIPER
#26Multi-fiber sensing topology for subsea wells
#27Circular Downhole Ultrasonic Phased Array
#28Sonic Through Tubing Cement Evaluation
#29CEMENT BONDING EVALUATION WITH A SONIC-LOGGING-WHILE-DRILLING TOOL
#30Velocity model for sediment-basement interface using seismic and potential fields data
#31Method to determine drilling-induced rock damage
#32Through tubing cement evaluation based on casing extensional waves
#33Continuous seismic data acquisition having variable density source geometry
#34SYSTEMS AND METHODS FOR RESERVOIR CHARACTERIZATION
#35Multi-pole resonance based through tubing cement evaluation
#36Method of obtaining seismic while drilling signal
#37Fracture Geometry And Orientation Identification With A Single Distributed Acoustic Sensor Fiber
#38System and method for diagnosing borehole structure variances using independent component analysis
#39DETECTING OUT-OF-BAND SIGNALS IN A WELLBORE USING DISTRIBUTED ACOUSTIC SENSING
#40Interpolation method and system to obtain azimuthal borehole sonic measurements
#41Method for reconstructing at least one trace in a seismic image
#42METHODS OF CHARACTERIZING ACOUSTIC OUTPUT FROM HYDROCARBON WELLS
#43System and methods for determining a converted wave attenuated vertical seismic profile of a hydrocarbon reservoir
#44Triggering distributed acoustic sensing downhole using an active fiber stretcher assembly
#45Low frequency distributed acoustic sensing hydraulic fracture geometry
#46Detection system for detecting discontinuity interfaces and/or anomalies in pore pressures in geological formations
#47ACOUSTIC PHASED ARRAY SYSTEM AND METHOD FOR DETERMINING WELL INTEGRITY IN MULTI-STRING CONFIGURATIONS
#48Through tubing acoustic measurements to determine material discontinuities
#49Through tubing acoustic measurements
#50Determining a seismic quality factor for subsurface formations for marine vertical seismic profiles
#51Method and apparatus for geophysical formation evaluation measurements behind casing
#52Fracture wave depth, borehole bottom condition, and conductivity estimation method
#53SYSTEM AND METHOD FOR LOCALIZED SEISMIC IMAGING AROUND WELLBORES
#54Rock physics model for fluid identification and saturation estimation in subsurface reservoirs
#55Method and system for automatic picking of borehole acoustic events based on new objective function
#56Enhanced-resolution sonic data processing for formation body wave slowness with full offset waveform data
#57Method for improving 2D seismic acquisition
#58Ultrasonic pulse-echo and caliper formation characterization
#59Method and apparatus for fluid characterization and holdup estimation using acoustic waves
#60SEISMIC IMAGE DATA INTERPRETATION SYSTEM
#61Method and system for processing well log data from multiple wells using machine learning
#62Method and system for determining energy-based brittleness
#63Gauge length effect and gauge length conversion
#64System and method for diagnosing borehole structure variances using independent component analysis
#65Instrumented bridge plugs for downhole measurements
#66Seismic pore-pressure prediction using prestack seismic inversion
#67Ultrasonic echo locating in a wellbore using time gain compensation
#68System and method for generating slowness logs in thinly laminated formations
#69Through casing formation slowness evaluation with a sonic logging tool
#70Ultrasonic waveform processing using deconvolution in downhole environments
#71Flow rate optimization during simultaneous multi-well stimulation treatments
#72Estimation of formation and/or downhole component properties using electromagnetic acoustic sensing
#73Circular downhole ultrasonic phased array
#74Enhanced-resolution rock formation body wave slowness determination from borehole guided waves
#75Method and system for diagenesis-based rock classification
#76Method for estimating rock brittleness from well-log data
#77Depth-continuous estimation of the elastic tensor using single depth borehole sonic measurements
#78Real-time reconfiguration of phased array operation
#79Apparatus and method for performing formation stress testing in an openhole section of a borehole
#80APPARATUS FOR SIMULTANEOUS LOGGING FOR MULTIPOLE SONIC AND ACOUSTIC REFLECTION SURVEY
#81Cooled single-photon detector apparatus and methods
#82Measurement of in situ rock formation properties using surface seismic sources and downhole receivers
#83Methods of analyzing cement integrity in annuli of a multiple-cased well using machine learning
#84Drift correction in a fiber optic distributed acoustic sensing system
#85Well logging to identify low resistivity pay zones in a subterranean formation using elastic attributes
#86System and Method to Obtain Vertical Seismic Profiles in Boreholes Using Distributed Acoustic Sensing on Optical Fiber Deployed Using Coiled Tubing
#87Sonic through tubing cement evaluation
#88Single-photon detector-based interrogation for distributed fiber optic sensing of subsea wells
#89Ultrasonic acoustic sensors for measuring formation velocities
#90Downhole acoustic measurement
#91ACOUSTIC INTEGRITY IMAGING
#92Depth and distance profiling with fiber optic cables and fluid hammer
#93Time-reversed nonlinear acoustics for wellbore integrity characterization
#94Fiber optic noise mitigation for distributed acoustic sensing
#95Hydraulic fracturing modelling and control
#96SYSTEMS AND METHODS FOR DETECTION OF WELL PROPERTIES
#97DRA DAS system
#98Leak localization using acoustic-signal correlations
#99Sensing-acquisition-wireless transmission integrated microseismic monitoring system and method
#100Seismic surveys using two-way virtual source redatuming
#101B annulus acoustic pressure sensing
#102Measurement-while-drilling method and device for assessing outburst risk of coal seam
#103Multi-frequency acoustic interrogation for azimuthal orientation of downhole tools
#104Energy efficient seismic intrusion detection
#105Auditory monitoring of downhole conditions through a fiber optic cable
#106Simulation of geophone data from distributed acoustic sensing data
#107Spectral noise separation and cancellation from distributed acoustic sensing acoustic data
#108Cement bonding evaluation with a sonic-logging-while-drilling tool
#109Distributed acoustic sensing system with a polarization control device for improving signal-to-noise ratio
#110Gauge length effect and gauge length conversion
#111Detecting a screen-out in a wellbore using an acoustic signal
#112Quasi-static Stoneley slowness estimation
#113Fracture wave depth, borehole bottom condition, and conductivity estimation method
#114Hydrophone having no internal leads
#115Determining anisotropy for a build section of a wellbore
#116Arrayed distributed temperature sensing using single-photon detectors
#117System and method for spatially imaging and characterizing properties of rock formations using specular and non-specular beamforming
#118Switchable distributed acoustic sensing system for wellbore environment
#119Classifying Well Data Using A Support Vector Machine
#120Distributed sensing systems and methods with spatial location correlation
#121Measuring formation porosity and permeability
#122Wellbore sand detection using passive acoustic array
#123EXTENDABLE/COLLAPSIBLE APPARATUS FOR FRACTURE IMAGING AND USE OF SAME
#124Cooled optical apparatus, systems, and methods
#125Simultaneous distributed measurements on optical fiber
#126Systems and methods for using Stoneley waves for bottom-hole proximity detection
#127Non-metallic pipe locator
#128Fracture Mapping Using Piezoelectric Materials
#129Low frequency distributed acoustic sensing hydraulic fracture geometry
#130Multi-Well Resistivity Anisotropy Modeling, Used to Improve the Evaluation of Thinly Bedded Oil and Gas Reservoirs
#131Well integrity analysis using sonic measurements over depth interval
#132Interior Seismic Data Generator
#133High precision acoustic logging processing for compressional and shear slowness
#134Evaluation of cased hole perforations in under-pressured gas sand reservoirs with stoneley wave logging
#135Monitoring system for deformations of gas storage
#136Multi-mode control of downhole tools
#137Formation acoustic property measurement with beam-angled transducer array
#138Acoustic sensor for rock crack detection
#139Rock damage acoustic monitoring system
#140Monitoring system for deformations and destructions of gas storage
#141Microseismic monitoring system
#142Test system for microseismic test of rock mass fractures
#143Casing thickness estimation by frequency correlation
#144Anisotropic NMO correction and its application to attenuate noises in VSP data
#145Frequency weighting in broadband acoustic beamforming
#146SALT PROXIMITY IMAGING USING REVERSE TIME MIGRATION OF TRANSMITTED VERTICAL SEISMIC PROFILE DATA
#147Seismic sensor orientation
#148Large area seismic monitoring using fiber optic sensing
#149Wavelet estimation for four-dimensional characterization of subsurface properties based on dynamic simulation
#150Wellbore Distributed Acoustic Sensing System Using A Mode Scrambler
#151System and method for leak detection
#152Active error correction in an optical sensor system
#153Method and system for imaging dipping structures
#154Reducing noise in a distributed acoustic sensing system downhole
#155Distributed acoustic sensing systems and methods employing multiple pulse widths
#156Enhanced seismic surveying
#157Passive ranging using acoustic energy originating from a target wellbore
#158Downhole interpretation techniques using borehole dips
#159Method and system for estimating borehole condition using stoneley measurement
#160Borehole trajectory via multi-component borehole seismic receiver
#161Hybrid fiber optic cable for distributed sensing
#162Evaluation of physical properties of a material behind a casing utilizing guided acoustic waves
#163IMPROVED FRACTURE MATCHING FOR COMPLETION OPERATIONS
#164Downhole seismic sensing synchronization systems and methods
#165Thin bed tuning frequency and thickness estimation
#166Downhole fiber optic hydrophone
#167System for automatically locating microseismic events
#168Multi-sensor workflow for evaluation of water flow in multiple casing strings with distributed sensors data
#169Multi-mode acoustic tool and method
#170SEISMIC INVESTIGATIONS USING SEISMIC SENSOR
#171Real-time pattern recognition and automatic interpretation of acoustic reflection images
#172FIBER OPTIC DISTRIBUTED ACOUSTIC SENSOR OMNIDIRECTIONAL ANTENNA FOR USE IN DOWNHOLE AND MARINE APPLICATIONS
#173Acoustic sensing with azimuthally distributed transmitters and receivers
#174Acoustic tool eccentering correction
#175Downhole acoustic mapping
#176Gauge length optimization in distributed vibration sensing
#177Method for determining formation properties by inversion of multisensor wellbore logging data
#178Non-contact system and methodology for measuring a velocity vector
#179Leak detection via doppler shift differences in moving hydrophones
#180Logging system and method for evaluation of downhole installation
#181Method for near-real-time, high-resolutionsignal filtering in noisy environments
#182Low-frequency DAS SNR improvement
#183SMART FRAC PLUG
#184Microseismic monitoring sensor uncertainty reduction
#185Monitoring a geological formation
#186Formation measurements using downhole noise sources
#187MEMS-based transducers on a downhole tool
#188Acoustic logging tool utilizing fundamental resonance
#189Method and system for acquisition of seismic data
#190Methods to image acoustic sources in wellbores
#191Magneto-seismic exploration method and system
#192Hydrophone having no internal leads
#193Drilling noise categorization and analysis
#194Reducing microseismic monitoring uncertainty
#195Downhole interpretation techniques using borehole dips
#196Electronic Sensor Apparatus, Methods, and Systems
#197Seismic based fracking fluid disposal
#198Method and system for fracture detection using acoustic waves
#199Techniques for removing interface noise from acoustic log data
#200SEISMIC SENSOR MODULE
#201Advanced noise reduction in acoustic well logging
#202Adaptive feedback for phase estimation and adjustment
#203Sensing systems and methods with phase unwrapping based on a dynamic phase change model
#204SYSTEMS AND METHODS FOR DETECTION OF WELL PROPERTIES
#205Distributed optical sensors for acoustic and vibration monitoring
#206Displacement measurements using a multi-cavity sensor
#207Systems, methods, and computer-readable media for determining shear-wave to compressional-wave velocity ratios in well casings
#208Systems and methods for evaluating annular material using beamforming from acoustic arrays
#209Noise removal for distributed acoustic sensing data
#210FRACTURE TREATMENT ANALYSIS BASED ON SEISMIC REFLECTION DATA
#211Systems, methods, and software for detecting the presence of subterranean tunnels and tunneling activity
#212Coherent noise attenuation using statistical methods
#213Downhole surveillance
#214Downhole sensing using parametric amplification with squeezed or entangled light for internal mode input
#215Extendable/collapsible apparatus for fracture imaging and use of same
#216PLURAL-DEPTH BURIED SEISMIC SENSORS ACQUISITION SYSTEM AND METHOD
#217Dual core locking geophone
#218STRUCTURE DIP CONSTRAINED KIRCHHOFF MIGRATION
#219Systems and methods for multiple-code continuous-wave distributed acoustic sensing
#220Controlled-frequency downhole seismic source
#221Measuring formation porosity and permeability
#222Rotating sensor mechanism for seismic while drilling sensors
#223Adaptive optimization of output power, waveform and mode for improving acoustic tools performance
#224Method for estimating anisotropic mechanical properties of a reservoir using sonic logging data
#225Workflow for determining stresses and/or mechanical properties in anisotropic formations
#226Multi-sensor workflow for evaluation of water flow in multiple casing strings with distributed sensors data
#227Method and system for monitoring fluid flow in a conduit
#228Methods, systems and devices for predicting reservoir properties
#229Planning and performing re-fracturing operations based on microseismic monitoring
#230Layered linear inversion techniques for locating microseismic activity
#231METHODS AND SYSTEMS FOR MONITORING A TARGET USING REFRACTION DATA ACQUIRED WITH BURIED SOURCES AND BURIED SENSORS
#232Corrective scaling of interpreted fractures based on the microseismic detection range bias correction
#233Seismic sensing with optical fiber
#234Downhole acoustic wave sensing with optical fiber
#235Geophone with tunable resonance frequency
#236Regression relationship approaches
#237Pressure compensated capacitive micromachined ultrasound transducer for downhole applications
#238Fiber optic cable for distributed acoustic sensing with increased acoustic sensitivity
#239Method of coalescence microseismic mapping including model's uncertainty
#240Well monitoring by means of distributed sensing means
#241Apparatus and method for detecting fracture geometry using acoustic telemetry
#242Differential phase semblance apparatus, systems, and methods
#243Wide bandwidth borehole dipole source for acoustic logging
#244Compressional velocity correction apparatus, methods, and systems
#245Fiber optic vibration detection
#246Downhole seismic sensor with filler fluid and method of using same
#247Method of borehole seismic surveying using an optical fiber
#248Seismic monitoring
#249Distributed strain and temperature sensing system
#250Passive acoustic resonator for fiber optic cable tubing
#251Distributed clamps for a downhole seismic source
#252Method to install sensing cables in monitoring wells
#253Plural-depth buried seismic sensors acquisition system and method
#254INTRA-BED SOURCE VERTICAL SEISMIC PROFILING
#255Integrity monitoring system and a method of monitoring integrity of a stationary structure
#256Device and method for deghosting P-waves
#257Measurement of permeability in borehole in the presence of mudcake
#258SEISMIC IMAGING APPARATUS
#259Method and system for enhancing the spatial resolution of a fiber optical distributed acoustic sensing assembly
#260Fracture monitoring
#261Fiber optic cable for distributed acoustic sensing with increased acoustic sensitivity
#262Well Monitoring by Means of Distributed Sensing Means
#263Well monitoring by means of distributed sensing means
#264Acoustic transducer with a backing containing unidirectional fibers and methods of making and using same
#265Log processing in highly deviated wellbores
#266Distributed acoustic sensing with fiber Bragg gratings
#267Continuous microseismic mapping for real-time 3D event detection and location
#268Methods and systems for seismic monitoring
#269Enhanced sensing of subsea wells using optical fiber
#270Selection and removal of acoustic baseline signal for enhanced cement bond evaluation