Abstract: A method for determining residual oil saturation of an oil reservoir, the method comprising: introducing a partitioning tracer comprising a sulfone compound having a log Kow value in the range ?0.5 to 3 into the oil reservoir; and monitoring the production of the tracer from the oil reservoir over time to determine the residual oil saturation. Optionally the method comprises introducing both a conservative tracer and the partitioning tracer into the oil reservoir and monitoring the production of both the tracers from the oil reservoir over time to determine the residual oil saturation.
Abstract: A method for producing a catalyst or catalyst precursor is described including: applying a slurry of a particulate catalyst compound in a carrier fluid to an additive layer manufactured support structure to form a slurry-impregnated support, and drying and optionally calcining the slurry-impregnated support to form a catalyst or catalyst precursor. The mean particle size (D50) of the particulate catalyst compound in the slurry is in the range 1-50 ?m and the support structure has a porosity ?0.02 ml/g.
Type:
Grant
Filed:
December 18, 2015
Date of Patent:
November 24, 2020
Assignee:
Johnson Mattey Public Limited Company
Inventors:
Duncan Roy Coupland, Jonathan David Phillips, Sophie Winfield
Abstract: An apparatus is disclosed. The apparatus comprises a lean-burn internal combustion engine, engine management means and an exhaust system for treating exhaust gas of the engine. The exhaust system comprises a first oxidation catalyst disposed on a first honeycomb monolith substrate. The first oxidation catalyst comprises platinum supported on a first metal oxide support comprising at least one reducible oxide, and is substantially free of alkali metals and alkaline earth metals. The engine management means is arranged, when in use, intermittently to modulate the lambda composition of the exhaust gas entering the first oxidation catalyst to a rich lambda composition.
Type:
Application
Filed:
December 21, 2011
Publication date:
December 26, 2013
Applicant:
JOHNSON MATTEY PUBLIC LIMITED COMPANY
Inventors:
David Bergeal, Andrew Francis Chiffey, Marie Feuersein, Paul Richard Phillips, Wolfgang Strehlau, Daniel Swallow, James Wylie