title: Permeability determination through NMR detection of acoustically induced fluid oscillation.
abstract: 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.
authors.affiliation: Shell International Exploration and Production, Kessler Park 1, 2288 GS Rijswijk, The Netherlands. wim.looyestijin@shell.com
authors.forename: Wim J
authors.initials: WJ
authors.lastname: Looyestijn
authors.forename: Robert M M
authors.initials: RM
authors.lastname: Smits
authors.forename: Issa
authors.initials: I
authors.lastname: Abu-Shiekah
authors.forename: Boris
authors.initials: B
authors.lastname: Kuvshinov
authors.forename: Jan P
authors.initials: JP
authors.lastname: Hofman
authors.forename: Alex
authors.initials: A
authors.lastname: Schwing
mesh_terms: 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
chemical_list: D002254:Carbonates; D014867:Water; D012822:Silicon Dioxide