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#### Effects Of A Logging Tool On The Stoneley Wave Propagation In Elastic And Porous Formations

(Massachusetts Institute of Technology. Earth Resources Laboratory, 1991)

A detailed study is carried out to investigate the effects of an acoustic logging tool on
the propagation characteristics of Stoneley waves in both elastic and porous formations.
In an elastic formation, the presence of ...

#### Acoustic Wave Propagation In A Fluid-Filled Borehole With A Horizontal Fracture

(Massachusetts Institute of Technology. Earth Resources Laboratory, 1990)

The propagation of guided waves in a fluid-filled borehole with an open horizontal
fracture is investigated both theoretically and experimentally. The fracture is modeled
as a fluid layer that separates the domain of ...

#### Borehole Stoneley Wave Propagation Across Heterogeneous And Permeable Structures

(Massachusetts Institute of Technology. Earth Resources Laboratory, 1991)

This study investigates the propagation of borehole Stoneley waves across heterogeneous
and permeable structures. By modeling the structure as a zone intersecting the borehole,
a simple one-dimensional theory is formulated ...

#### Untitled

(Massachusetts Institute of Technology. Earth Resources Laboratory, 1994)

This paper describes a propagator matrix formulation for the problem of the Stoneley
wave propagation in an irregular borehole. This is based on a simple one-dimensional
theory that is possible for the low frequency ...

#### Fast Inversion Of Formation Permeability From Stoneley Wave Logs Using A Simplified Blot-Rosenbaum Model

(Massachusetts Institute of Technology. Earth Resources Laboratory, 1994)

This paper describes a fast algorithm for estimating formation permeability from Stoneley
wave logs. The procedure uses a simplified Biot-Rosenbaum model formulation. The
input to the inversion is the Stoneley wave ...

#### Dynamic Permeability And Borehole Stoneley Waves: A Simplified Biot-Rosenbaum Model

(Massachusetts Institute of Technology. Earth Resources Laboratory, 1990)

Stoneley waves in permeable boreholes are diagnostic of formation permeability because
their propagation is affected by the dynamic fluid flow at the borehole wall. We
characterize this flow using the concept of dynamic ...

#### Modeling Borehole Stoneley Wave Propagation Across Permeable In-Situ Fractures

(Massachusetts Institute of Technology. Earth Resources Laboratory, 1991)

The characterization of hydraulic transmissivity of permeable fracture reservoirs is a
very important task in the exploration of water resources and hydrocarbons. Previous
studies that model the permeable structure as a ...

#### Theoretical Models Relating Acoustic Tube-Wave Attenuation To Fracture Permeability - Reconciling Model Results With Field Data

(Massachusetts Institute of Technology. Earth Resources Laboratory, 1989)

Several recent investigations indicate that tube-wave amplitude attenuation in acoustic
full-waveform logs is correlated with permeability in fractured rocks. However, there
are significant differences between predictions ...

#### Acoustic Logging In Randomly Stratified Formations

(Massachusetts Institute of Technology. Earth Resources Laboratory, 1993)

The propagation of borehole acoustic waves in the presence of various types of heterogeneous formations is investigated by modeling them as stratified media with varying velocity-depth distributions. Two types of formations ...

#### Stoneley Wave Propagation In A Fluid-Filled Borehole With A Vertical Fracture

(Massachusetts Institute of Technology. Earth Resources Laboratory, 1989)

The propagation of Stoneley waves in a fluid-filled borehole with a vertical fracture is
investigated both theoretically and experimentally. The borehole propagation excites
fluid motion in the fracture and the resulting ...