Dielectric method of highresolution gas hydrate estimation Academic Article uri icon


  • Insitu dielectric properties of natural gas hydrate are measured for the first time in the Mallik 5L38 Well in the Mackenzie Delta, Canada. The average dielectric constant of the hydrate zones is 9, ranging from 5 to 20. The average resistivity is >5 ohm.m in the hydrate zones, ranging from 2 to 10 ohm.m at a 1.1 GHz dielectric tool frequency. The dielectric logs show similar trends with sonic and induction resistivity logs, but exhibits inherently higher vertical resolution (<5 cm). The average insitu hydrate saturation in the well is about 70%, ranging from 20% to 95%. The dielectric estimates are overall in agreement with induction estimates but the induction log tends to overestimate hydrate content up to 15%. Dielectric estimates could be used as a better proxy of insitu hydrate saturation in modeling hydrate dynamics. The finescale structure in hydrate zones could help reveal hydrate formation history.

published proceedings

  • Geophysical Research Letters

author list (cited authors)

  • Sun, Y. F., & Goldberg, D.

citation count

  • 18

complete list of authors

  • Sun, YF||Goldberg, D

publication date

  • February 2005