- Top Drilling Supplies
sieve shaker for separating material
by
ericfu
According to the present invention, there is provided a
sieve shaker
for separating material, said sieve shaker comprising a basket for supporting a screen assembly and a collection receptacle, the basket comprising two side walls, an end wall and an opening in the bottom of said basket, said basket having means to support screen assemblies for substantially covering said opening characterised in that said basket further comprises separating means in or on any of said walls for separating material. Preferably, the
sieve shaker
further comprises directing means for directing separated material therefrom into said collection receptacle.
he need for solids control in drilling fluid or mud used in hydrocarbon well drilling is well known in the prior art. Drilling mud, typically a mixture of clay and water and various additives, is pumped down through a hollow drill string (pipe, drill collar, bit, etc.) into a well being drilled and exits through holes in a drill bit. The mud picks up cuttings (rock) and other solids from the well and carries them upwardly away from the bit and out of the well in a space between the well walls and the drill string. At the top of the well, the solids-laden mud is discharged over a vibratory separator known as a
sieve shaker
, a device which typically has one or a series of screens arranged in tiered or flat disposition with respect to each other. The prior art discloses a wide variety of vibrating screens, devices which use them, sieve shakers, and screens for sieve shakers. The screens catch and remove solids from the mud as the mud passes through them. If drilled solids are not removed from the mud used during the drilling operation, recirculation of the drilled solids can create weight, viscosity, and gel problems in the mud, as well as increasing wear on mud pumps and other mechanical equipment used for drilling.
Sieve shaker
or screen capacity is typically determined by the position of a fluid-end point . The fluid end-point is the point where the fluid pool stops on the screen surface near the shaker’s discharge end. This is particularly noticeable when the basket is inclined to the discharge end. As the fluid-end point moves closer to the discharge end, discharged solids can become too wet, risking whole mud losses over the screen.
According to the present invention, there is provided a
sieve shaker
for separating material, said sieve shaker comprising a basket for supporting a screen assembly and a collection receptacle, the basket comprising two side walls, an end wall and an opening in the bottom of said basket,
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