During Ocean Drilling Program Leg 164, shear sonic velocity and other geophysical logs
were acquired in gas hydrate‐bearing sediments on the Blake Ridge to characterize the …

Introducing the first, self-contained reference on acoustic waveform logging Acoustic
measurements in boreholes were first made as a specialized logging technique in …

Methods for the determination of in situ P and S wave attenuation from full waveform
acoustic logs are developed. For P waves, the peak amplitude ratios of the refracted P …

A device and method for monitoring conditions associated with pavement deterioration are
disclosed. Conditions such as voids or loss of support under a rigid pavement, moisture …

The Seismic Pavement Analyzer (SPA) is an instrument designed and constructed to
monitor conditions associated with pavement deterioration. It measures voids or loss of …

Assessing Quality of Concrete with Wave Propagation Techniques Search Subscribe to Email
​▼ Membership Membership In today’s market, it is imperative to be knowledgeable and have …

Compressional and shear traveltime logs (DTC and DTS, respectively) acquired using sonic
logging tools are used to estimate connected porosity, bulk modulus, shear modulus …

A casing sensor and methods for sensing using a casing sensor are disclosed. The casing
sensor includes a casing shoe and a sensor coupled to the casing shoe. A casing data relay …

Dynamic waveform matching (DWM) is a generalization of cross correlation that is useful in
waveform classification and feature extraction problems. While cross correlation matches …

This richly-illustrated reference guide presents innovative techniques focused on reducing
time, cost and risk in the construction and maintenance of underground facilities: A primary …