Calfrac Well Services Ltd.

Donald Robert Battenfelder

Dwight Bobier

Leslie M Wise

Dwight M Bobier

A split stream oilfield pumping system is provided which utilizes recycled high Reid vapor pressure production fluids. The oilfield system is made up of two separate fluid streams: a first recycled fluid stream and a second new fluid stream. The recycled fluid stream is enclosed to reduce or eliminate vaporization of the recycled fluid, which typically will have a Reid vapor pressure &#x3e;14 kPa. Wellbore treatment additives are added to the new fluid stream, and the resultant treatment fluid is mixed with the recycled fluid in a common manifold to provide a final wellbore treatment fluid to be delivered to the wellhead.

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Cochrane, Canada

Donald Robert Battenfelder