Relationship of pore structure to fluid behavior in low permeability gas sands. [Porosimeter/permeameter]

Technical Report · Tue Jun 01 04:00:00 EDT 1982

OSTI ID:5301371

Morrow, N R; Chatzis, I; Brower, K R

The major task is to relate the permeability behavior of low permeability sandstones to their pore structure. In this work, special attention is being paid to the effects of rock-fluid interactions on pore structure and the effects of unloading and loading of cores which accompanies their recovery and testing. The second task involves participation in special core analysis studies associated with the Western Tight Gas Sand Multi-Well Program and the third is to provide support work by way of preparation of cores of known properties for work being carried out at Sandia. During the firt six months of the project a multipurpose porosimeter/permeameter was built and tested. A unique feature of its capability is measurement of mercury injection pressures with overburden applied to the sample. The apparatus is now used routinely for gas and liquid permeability measurements and can also be used to determine breakthrough pressures. Six porosimeter/permeameter units have now been built. Investigations to date have included: the effects of overburden and overburden cycling on permeability; the effects of overburden and overburden cycling on permeability; the effects of applying overburden in excess of the geostatic pressure of the core prior to recovery; rock-fluid interactions using various gases, aqueous and organic liquids and carbon dioxide in both gaseous and liquid states as flowing fluids; theoretical and experimental study of the effect of stress on idealized slit-shaped pores.

• Research Organization: New Mexico Inst. of Mining and Technology, Socorro (USA). New Mexico Petroleum Recovery Research Center
• DOE Contract Number: AS19-80BC10216
• OSTI ID: 5301371
• Report Number(s): DOE/BC/10216-T2; ON: DE82017076
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030200* -- Natural Gas-- Reserves
Geology
& Exploration
CORRELATIONS
CRYSTAL STRUCTURE
DATA
DRILL CORES
EVALUATED DATA
EVALUATION
GEOLOGIC DEPOSITS
INFORMATION
MEASURING INSTRUMENTS
MICROSTRUCTURE
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NUMERICAL DATA
OVERBURDEN
PERMEABILITY
POROSITY
RESERVOIR ROCK
RESOURCES
ROCK-FLUID INTERACTIONS
ROCKS
SAND
SANDSTONES
SEDIMENTARY ROCKS