A laboratory evaluation of core preservation materials
This paper documents the results of a laboratory study of the effectiveness of available state-of-the-art core preservation materials. The ability of the core sealing material to prevent post-preservation changes in fluid saturations may have a profound effect on subsequent laboratory measurements. Native-state (oil-cut) cores are often considered the best source of certain in-situ reservoir properties. Employing fluid saturations or relative permeability data from a core of this type, that has been altered due to the core drying out before measurements can be made, can significantly alter the results of a reservoir engineering study or simulation. Considering the expense involved in obtaining, storing and analyzing a native-state core, and the purpose for which it was cut, knowing exactly what materials can adequately preserve a core until laboratory measurements are made is critical and should not be overlooked. In this laboratory study, saturated Berea Sandstone core plugs were preserved in a number of commonly employed sealing materials. The sealed plugs were then stored in a humidity controlled environment and periodically weighed to ascertain the degree of change that had occurred in the saturation of the plug. In addition, this paper discusses and suggests procedures for applying recommended sealing materials.
- Research Organization:
- Amoco Production Co.
- OSTI ID:
- 7200360
- Report Number(s):
- CONF-861080-
- Resource Relation:
- Conference: Society of Petroleum Engineers annual technical conference and exhibition, New Orleans, LA, USA, 5 Oct 1986
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
03 NATURAL GAS
DRILL CORES
SAMPLE PREPARATION
SATURATION
NATURAL GAS DEPOSITS
PETROLEUM DEPOSITS
RESERVOIR ROCK
SAMPLING
SEALING MATERIALS
BENCH-SCALE EXPERIMENTS
DRYING
EXPERIMENT PLANNING
RECOMMENDATIONS
SANDSTONES
SIMULATION
STORAGE
GEOLOGIC DEPOSITS
MATERIALS
MINERAL RESOURCES
PLANNING
RESOURCES
ROCKS
SEDIMENTARY ROCKS
020200* - Petroleum- Reserves
Geology
& Exploration
030200 - Natural Gas- Reserves
Geology
& Exploration