Measurement and analysis of two-phase flow through low permeability media. Task 3. Annual report Nov 82-Nov 83
Technical Report
·
OSTI ID:6863037
Research emphasis has been upon definition of rock characteristics that control fluid mobility in situ in tight sands. Results presented include the following: Western tight sand reservoirs containing natural gas of thermogenic origin contain only a few weight percent of clay minerals and less than half of the clay present is water sensitive (smectite). Although water sensitive clay constitutes less than 3 weight percent of the samples studied, drying with controlled humidity is required to avoid erroneously large measured values for porosity and permeability. Slots with openings less than 0.1 microns between quartz overgrowths or crystals of calcite may well provide the dominant flow pathways in tight sands. On the other hand, solution pores, originally occupied by mineral grains, may well provide a substantial portion of the porosity.
- Research Organization:
- Institute of Gas Technology, Chicago, IL (USA)
- OSTI ID:
- 6863037
- Report Number(s):
- PB-84-189125
- Country of Publication:
- United States
- Language:
- English
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