RETRIEVING THE FUNDAMENTAL MODE OF GROUND-FORCE SIGNAL TO IMPROVE SEISMIC SURVEY

METHOD FOR REAL-TIME FRACTURES DETECTION USING DRILL BIT AS SOURCE

Method and device for locating an optical fiber

ACTIVE SEISMIC SOURCE GENERATION FOR DISTRIBUTED ACOUSTIC SENSING, GEO-TAGGING, AND SUBSURFACE IMAGING

ADAPTIVE AQUATIC SEISMIC WHILE DRILLING ACQUISITION METHODS AND SYSTEMS

SYSTEM AND METHOD FOR DETERMINING WATER BOTTOM SEDIMENT ACOUSTIC PROPERTIES USING A PILE DRIVER ACOUSTIC SOURCE

DEVICE FOR MARINE SEISMIC EXPLORATIONS

Seismic source for on the move seismic surveying

Generator of acoustic waves

SEISMIC ACQUISITION AND PROCESSING WITH A HIGH-SPEED TRAIN SOURCE

Device for marine seismic explorations

WAVSEIS sourcing

Prime number survey design

Methods and systems for characterizing fractures in a subterranean formation

COIL-SHOOTING AND STRAIGHT-LINE-RECORDING SYSTEM AND METHOD FOR SEISMIC DATA ACQUISITION

Dipole Source

Estimating properties of a subterranean formation

Seismic-Source Apparatus And Detection System

Vibratory source for non-vertical boreholes and method

Source for marine seismic acquisition and method

Method and system for pneumatic control for vibrator source element

Prime number survey design

WAVSEIS sourcing

Method for calibrating the far-field acoustic output of a marine vibrator

CONTROL SYSTEM FOR MARINE VIBRATORS

Vibrator truck with a lift system comprising at least one flexible strap

Control system for marine vibrators operating near impulsive seismic signal sources

Control system for marine vibrators to reduce friction effects

Method and system for augmenting low-frequency range of seismic survey

Controlled-frequency downhole seismic source

Air-spring compensation in a piston-type marine vibrator

Piston integrated variable mass load

Air-spring compensation in a piston-type marine vibrator

Piston-type marine vibrators comprising a compliance chamber

Acoustic source apparatus, systems, and methods

Source for marine seismic acquisition and method

Variable mass load marine vibrator

Seismic device with sealed housing and related methods

Devices, systems and methods for low frequency seismic borehole investigations

Method and system for selecting parameters of a seismic source array

Constant energy displacements

Alternative vibrator actuator source

Wheel lifting apparatus

Devices and systems for controlling harmonic distortion in seismic sources

Electrical contacts to a ring transducer

Sweep design for seismic sources

Source for marine seismic acquisition and method

Source for marine seismic acquisition and method

Earth analysis methods, subsurface feature detection methods, earth analysis devices, and articles of manufacture

Apparatus for generating a seismic source signal

Method and system for selecting parameters of a seismic source array

Seismic wave generating apparatus and method

Electromagnetic seismology vibrator systems and methods

Apparatus and method for generating a seismic source signal

Seismic wave generation systems and methods for cased wells

Earth analysis methods, subsurface feature detection methods, earth analysis devices, and articles of manufacture

Apparatus and method for generating a seismic source signal

Apparatus and method for generating a seismic source signal

Rotary actuated seismic source and methods for continuous direct-push downhole seismic testing

Method of seismic evaluation of subterranean strata

System for imparting mechanical impulse energy to the ground

Borehole acoustic source

System for generation of thermal energy

Method and apparatus for generating shear waves usable in determining distribution and orientation of geologic features in the subsurface among other uses