Permeability changes in coal resulting from gas desorption. First quarterly report, August 16, 1989--November 15, 1989
Sampling Procedure: This project requires a carefully coordinated sample preparation procedure that will ensure that specimens of the proper size and physical characteristics are available for the various measurement methods used. Coherent blocks of coal will be collected in the field, with subsamples being removed in the lab by 1 inch-diameter core drill. At least 5 separate cores will be drilled from each block. Coal blocks sampled in the field will be approximately 10 inches (times) 10 inches {times} 6 inches. Distinctive compositional lithologies should be selected for sampling. For example, a section of the seam containing particularly thick vitrain or durain bands might be selected; or the block might include a mineral matter rich layer. If necessary, several blocks should be selected to represent a range in compositions. Sampling procedure must include a method for retaining moisture. The sample must not be allowed to dry out. Exposure to atmospheric oxygen should be limited as much as possible. The samples must carefully packed for shipment so as to preserve their integrity.
- Research Organization:
- Alabama Univ., University, AL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG22-89PC89764
- OSTI ID:
- 10174288
- Report Number(s):
- DOE/PC/89764-T6; ON: DE92019734
- Resource Relation:
- Other Information: PBD: 19 Nov 1989
- Country of Publication:
- United States
- Language:
- English
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Permeability changes in coal resulting from gas desorption. Quarterly report, August 16, 1989--November 15, 1989
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