SPECTRAL MEAN NORMALIZATION METHOD FOR MINIMIZING ROTATION EFFECT FROM DRILL BIT SOUNDS

Method for Determining Geology While Drilling

DRILL BIT SOURCE FOCUSING

LWD SONIC EVALUATION OF FORMATION HETEROGENEITY

ENERGY BAND METHOD FOR PROCESSING ACOUSTIC DATA

FIBER OPTICS ACOUSTIC STEERING FOR DIRECTIONAL DRILLING

While drilling single well seismic profiling acquisition system using drill bit seismic data

Minimization of drill string rotation rate effect on acoustic signal of drill sound

Multi-wavefield seismic detection method and system based on construction noise of shield machine

DRILLING UNIT ENERGY SOURCE FOR PIEZOELECTRIC EXPLORATION

METHOD FOR DETECTING AND QUANTIFYING FRACTURE INTERACTION IN HYDRAULIC FRACTURING

Drill bits for oil and gas applications

Geologic formation operations framework control

Apparatus and methods of evaluating rock properties while drilling using acoustic sensors installed in the drilling fluid circulation system of a drilling rig

Rock drilling device

Vibration while drilling acquisition and processing system

Coherent noise reduction in ultrasonic data

Systems and methods for detecting seismo-electromagnetic conversion

VIBRATION WHILE DRILLING DATA PROCESSING METHODS

VIBRATION WHILE DRILLING ACQUISITION AND PROCESSING SYSTEM

Vibration while drilling data processing methods

Time-reversed nonlinear acoustics for downhole pressure measurements

Apparatus and methods of evaluating rock properties while drilling using acoustic sensors installed in the drilling fluid circulation system of a drilling rig

Method and apparatus for identifying fluids behind casing

Apparatus and methods using acoustic and electromagnetic emissions

Drilling noise categorization and analysis

System and method for detecting vibrations using an opto-analytical device

Wireless communication for downhole tool strings