Active Member
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[China]
Address: B2-0645 ROOM, CENTURY-TEA-TRADE-CENTER, NO.10 MALIANDAO ROAD, XUANWU DISTRICT, BEIJING, CHINA
Contact name:Jade
FLRT Bit |
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12 1/4" FA617G , Tricone Rock Bit, Medium hard with higher
compressive strength as well as thick and streaks
RECOMMENDED DRILLING PARAMETERS FOR APPLICATION
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ROLLER CONE BIT FLUID CIRCULATION Drilling fluid passes from the drillstring and out through nozzles
in the bit.As it passes across the face of the bit it carries the drilled
cutting from the cones and into the annulus.The original design for rock bits only allowed the drilling mud to
be ejected from the middle of the bit .This was not very efficient and led to a build up of cuttings on
the face of the bit (bit balling) and cone erosion.A more efficient method of cleaning the face of the bit was
therefore introduced.The fluid is now generally ejected through three jet nozzles around
the outside of the bit body .The turbulence created by the jet streams is enough to clean the
cutters and allow efficient drilling to continue.
