Laboratory measurements on core-scale sediment/hydrate samples topredice reservoir behavior

Kneafsey, Timothy J. ; Seol, Yongkoo ; Moridis, George J. ; Tomutsa,Liviu ; Freifeld, Barry M.

Lawrence Berkeley National Laboratory

关键词: Natural Gas;    Computerized Tomography;    Thermal Conductivity;    54;    Hydrates;   

DOI  :  10.2172/929088
RP-ID  :  LBNL--59085
RP-ID  :  DE-AC02-05CH11231
RP-ID  :  929088

美国|英语

来源: UNT Digital Library

【 摘 要 】

Measurements on hydrate-bearing laboratory and field samplesare necessary in order to provide realistic bounds on parameters used innumerically modeling the production of natural gas from hydrate-bearingreservoirs. The needed parameters include thermal conductivity,permeability, relative permeability-saturation(s) relationships, andcapillary pressure-saturation(s) relationships. We have developed atechnique to make hydrate-bearing samples ranging in scale from coreplug-size to core-size in the laboratory to facilitate making thesemeasurements. In addition to pressure and temperature measurements, weuse x-ray computed tomography scanning to provide high-resolution dataproviding insights on processes occurring in our samples. Several methodsare available to make gas hydrates in the laboratory, and we expect thatthe method used to make the hydrate will impact the behavior of thehydrate sample, and the parameters measured.