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Well Drilling Tricone Rock Bit 12 1/4 FG635G With Gauge Protection
Well Drilling Tricone Rock Bit 12 1/4 FG635G With Gauge Protection
Specifications
Brand Name :
FLRT
Model Number :
12 1/4" FG635G
Certification :
API-7-1, ISO 9001:2008
Place of Origin :
China
MOQ :
20pcs
Supply Ability :
300pcs per quarter
Delivery Time :
5~45 workdays
Packaging Details :
plywood box / iron box
name :
roller cone drill bit
Cutting Material :
TCI
Standard :
API-7-1, ISO 9001:2008
Series :
FA
IADC :
637G
Supplementary Features :
G : Reinforced Gauge Protection
Shirttail :
Alloy Hard Facing
Insert Shape :
Conical
TCI :
Tungsten Carbide Insert
Description

12 1/4" FG637G , Well Drilling Bit , Sealed Roller Bearing , With Gauge Protection , Tricone Rock Bit , TCI Bit​

RECOMMENDED DRILLING PARAMETERS FOR APPLICATION

Types & IADC Code 417

437

447

517

527

517

527

537

547

617

627

637
WOB KN/mm(Bit Dia.) 0.4~0.9 0.4~0.9 0.35~1.0 0.35~1.0 0.5~1.0 0.6~1.1 0.7~1.2
Lb/in. (Bit Dia.) 2285~5142 2285~5142 2000~5714 2000~5714 2857~5714 3428~6285 4000~6857
Rotation Speed (Rpm) 140~60 240~70 125~50 ~60 110~50 100~40 80~4

Effects of Nozzle Configuration on Roller Cone Bit Performance

Direct hole bottom cleaning can involve the removal of discrete chips before they are re-ground or the erosion of rock flour, generated particularly by the action of blunt bit-teeth. In both these cases the hydraulics are working against chip hold-down forces related to the difference between the mud and pore pressurest . These can be reduced if the bit hydraulics limit the establishment of a low permeability skin on the hole bottom, thereby indirectly increasing the efficiency of hole bottom cleaning. It is expected that the removal of discrete chips will be controlled by the magnitude of the shear stresses and fluctuating pressures exerted on the chips by the flowing mud. On the other hand, the erosion of rock flour or mud cake will probably be controlled by the impact pressures on the hole bottom.

Product tags

tricone drilling bit

,

tricone rock drill bit

,

drill bit gauge
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Well Drilling Tricone Rock Bit 12 1/4" FG635G With Gauge Protection

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Product Detail
Brand Name :
FLRT
Model Number :
12 1/4" FG635G
Certification :
API-7-1, ISO 9001:2008
Place of Origin :
China
MOQ :
20pcs
Supply Ability :
300pcs per quarter
Contact Supplier
Well Drilling Tricone Rock Bit 12 1/4 FG635G With Gauge Protection

FLRT Bit

Site Member
8 Years
beijing, beijing
Since 1992
Business Type :
Manufacturer, Distributor/Wholesaler, Exporter
Main Products :
Tricone Roller Bit, TCI Tricone Bit, Tricone Drill Bit
Total Annual :
10000000-13000000
Employee Number :
150~200
Certification Level :
Site Member
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