Porosity and permeability of tight sands

Conference · Mon Oct 01 04:00:00 EDT 1984 · Soc. Pet. Eng. AIME, Pap.; (United States)

OSTI ID:5192601

Randolph, P L; Chowdiah, P; Soedr, D J

Detailed analyses of more than 50 core samples of western tight sands have resulted in several unanticipated observations that are set forth in this paper. Core analyses performed under stress representative of producing conditions provided data on porosity, pore volume compressibility, stress dependence of permeability to gas, and slope of the Klinkenberg plot (permeability at constant net stress vs. the inverse of pore pressure). Scanning electron microscope (SEM) and petrographic microscope analyses were performed on samples cut from the ends of core plugs tested. The microscopic studies were explicitly directed toward observing the <0.1 micron flow path openings deduced from permeability data. All samples were from depths that were either known to be gas producers or judged likely to be producers on the basis of wireline log analysis.

• Research Organization: Inst. of Gas Tech.
• OSTI ID: 5192601
• Report Number(s): CONF-8410216-
• Conference Information: Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Journal Volume: SPE/DOE/GRI 12836
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030200* -- Natural Gas-- Reserves
Geology
&amp; Exploration
COMPRESSIBILITY
COMPUTER CALCULATIONS
CRYSTAL STRUCTURE
DARCY LAW
ELECTRON MICROSCOPY
GEOLOGIC DEPOSITS
HYDRAULIC CONDUCTIVITY
MECHANICAL PROPERTIES
MICROSCOPY
MICROSTRUCTURE
MINERAL RESOURCES
NATURAL GAS DEPOSITS
PERMEABILITY
PETROGRAPHY
POROSITY
RESOURCES
ROCKS
SANDSTONES
SCANNING ELECTRON MICROSCOPY
SEDIMENTARY ROCKS
SOURCE ROCKS
STRESS ANALYSIS