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Phil Sturla of Shell Research in Sittingbourne was the original co-inventor of the formate brines, the clear drilling and completion fluids. This photo shows Phil measuring the viscosity of a formate drilling fluid in a HPHT rheometer in a Shell Research laboratory at Rijswijk, The Netherlands. The date of the photo is around 1988.
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Phil Sturla, co-inventor of formate brines, testing a formate drilling fluid
in a HPHT rheometer at Shell Research, Rijswijk – 1988
