Shell Oil Comapny

Shell Internationale Research Maatschappij, B.v.

Andrew John Sederman

Matthias Appel

Benjamin Charles Anger

Hilko De Jong

Lynn Faith Gladden

Michael David Mantle

Nicholas Philip Ramskill

An imager and method for imaging fluid of a subsurface formation is disclosed. The imager includes a housing having a sidewall defining a passage to receive a core sample of the subsurface formation therethrough. The housing is positioned in a downhole tool and has a fluid inlet to receive fluid from the subsurface formation into the passage. The imager also includes a permanent magnet positioned in the sidewall of the housing, a radio frequency coil positioned in the sidewall of the housing between the permanent magnet and the passage, a gradient field in the sidewall of the housing between the permanent magnet and the radio frequency coil, and a chemically-selective imager. The chemically-selective imager is operatively connected to the radio frequency coil to selectively pulse frequencies according to a pulse sequence whereby individual fluid measurements of the sample are generated.

Chemically-selective imager for imaging fluid of a subsurface formation and method of using same

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Cambridge, United Kingdom

Andrew John Sederman