2015年8月26日星期三

Operational notices of drilling fluids shear pump

As a proven effective machinery, shear pump is specialized in cutting polymer and clay and is widely used to drilling site. In drilling fluid solids control system, the polymer (or clay) should sufficiently cut in advance before re-entering the drilling fluid system, to give full play to its effectiveness and improve drilling fluids performance. If not fully cut, it is possible that the polymer in the first cycle plugs the vibrating screen, resulting in the loss of massive polymer, increasing drilling costs and also making solid particles in large size which are hard and difficult to get rid of; In well completion, if drilling fluids is not sufficient to be sheared, the polymer will form a lot of "fish eyes", which will hurt the formation so that permeability of formation and reservoir production greatly reduce.

Operational notices of drilling fluids shear pump:

1. After using shear pump, we should use clear water flush pipeline and shear pump, to avoid leftover block runner and nozzle of impeller.
2. Bearing bore is filled in grease about 10~20ml every other week, combination seal cavity is filled in grease about 10~20ml every day.
3. In winter, if the pump will not used for a long time, drilling fluid in pump shell should be discharged, to avoid drilling fluid freeze.
All in all, shear pump provides the fast mud configuration and treatment for the user, to satisfy project requirements for high performance mud.

Related solids control equipment: jet mud mixer, mud agitator

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