Petrophysical properties and network models of gas-bearing reservoir rocks. Annual report, October 1, 1987-November 30, 1988. Technical report

Technical Report · Wed Nov 30 00:00:00 EST 1988

OSTI ID:5567416

Nur, A; Nolen-Hoeksema, R

Studies of the effect of clay on acoustic velocities in shaley sandstones indicate that clay's influence on rock properties is dominated by its structural position, either as a pore-filling constituent or an integral part of the framework. The authors proposed an isostrain relation to explain the influence of clay on acoustic velocity. A new image-analysis algorithm, called Cederberg-Sobel scanning, was developed to define the connected pathways for fluid flow from a thin section or for geological-feature classification. Connected or isolated features of a 2-D image are extracted within a single scanning pass. Image heterogeneity is transformed into a network and the data are coded into a matrix of nodes, connections and quality of connections. An experimental apparatus has been designed and built to measure the acoustic velocity and attenuation anisotropy in rock.

• Research Organization: Stanford Univ., CA (USA). Dept. of Geophysics
• OSTI ID: 5567416
• Report Number(s): PB-89-214068/XAB
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
NATURAL GAS DEPOSITS
SANDSTONES
ROCK MECHANICS
ANISOTROPY
ATTENUATION
CLAYS
DESIGN
FLUID FLOW
MEASURING INSTRUMENTS
PERFORMANCE
PERMEABILITY
PETROLOGY
PROGRESS REPORT
SAMPLING
SOUND WAVES
VELOCITY
DOCUMENT TYPES
GEOLOGIC DEPOSITS
GEOLOGY
MECHANICS
MINERAL RESOURCES
RESOURCES
ROCKS
SEDIMENTARY ROCKS
030200* - Natural Gas- Reserves
Geology
& Exploration
033000 - Natural Gas- Properties & Composition