Permeability determination through NMR detection of acoustically induced fluid oscillation.
We present a novel approach for directly measuring the permeability of reservoir rocks by an instrument lowered in a well bore. The measurement is made by creating an oscillatory motion of fluids in the pores by acoustic stimulation and by detecting the amplitude response as a phase shift on a nuclear magnetic resonance relaxation signal. A full theoretical description is given. The feasibility of the method has been verified in the laboratory on a set of sandstone and carbonate samples spanning the entire range of practical interest.
Looyestijn
Wim J
WJ
Shell International Exploration and Production, Kessler Park 1, 2288 GS Rijswijk, The Netherlands. wim.looyestijin@shell.com
Smits
Robert M M
RM
Abu-Shiekah
Issa
I
Kuvshinov
Boris
B
Hofman
Jan P
JP
Schwing
Alex
A
D000162:Acoustics; D002254:Carbonates / Q000737:chemistry; D055593:Geological Phenomena; D005844:Geology; D009682:Magnetic Resonance Spectroscopy / Q000295:instrumentation / Q000379:methods; D008962:Models, Theoretical; D010539:Permeability; D016062:Porosity; D012212:Rheology / Q000295:instrumentation / Q000379:methods; D012822:Silicon Dioxide / Q000737:chemistry; D013016:Sound; D014867:Water / Q000737:chemistry
D002254:Carbonates; D014867:Water; D012822:Silicon Dioxide