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M-Series Mammoth Bits
for sale in Russia/Caspian: Russia, Kazakhstan, Azerbaijan, Ukraine, Belarus, Uzbekistan, Tajikistan, and Turkmenistan

Encore M-Series, which we term our Mammoth Bits, are large diameter bits designed for drilling either surface holes or larger casing shoes and the formation immediately beneath. These bits are offered in sizes raging from 11 to 18, and include cutter designs to accommodate gravel beds, softer drilling as well as to drill float equipment as rapidly as possible.

12-1/4 M-3167D SPECIFICATIONS

The M-3167D is a very aggressive 3-blade design for drilling out PDC compatible float equipment and soft, shallow formations. The M-3167D uses 16mm PDC cutters to improve reactive torque in directional motor applications. Tremendous junk slot volume and blade standoff minimize bit balling. The M-3167D will drill soft carbonates, non-abrasive sandstones and sticky shales rapidly.
SPECIFICATIONS 12-1/4
Primary Face Cutters31
Secondary Face Cutters23
Gage Cutters12
Gage Length3
Nozzles7
Connection6-5/8 REG
Length (Overall, Make-Up)20-7/8, 15-7/8


The M-3167D is designed for drilling float equipment, spud-in and surface holes to replace large diameter milltooth bits. Problem shales, gumbos and even gravel beds can be drilled with the M-3167D in waterbase muds. The inner 3 nozzles can be blanked off for rigs with reduced pump capacity. Versions of the M-3167D are available with several PDC cutter options, including carbide wedge cutters for broken formations. All M-Series bits have Super Duty (SD) gage protection as standard, along with our Twin Cutter (D) option. The standard product configuration is seven (7) nozzles.
OPERATING PARAMETERS 12-1/4
Make-Up Torque (max)40-50K ft/lb
Flow Rate (GPM)500-800
RPM Range50-180
Bit Weight (LBS)2K 20K


14-3/4 M-3167D SPECIFICATIONS

The M-3167D is a very aggressive 3-blade design for drilling out PDC compatible float equipment and soft, shallow formations. The M-3167D uses 16mm PDC cutters to improve reactive torque in directional motor applications. Tremendous junk slot volume and blade standoff minimize bit balling. The M-3167D will drill soft carbonates, non-abrasive sandstones, and sticky shales rapidly.
SPECIFICATIONS 14-3/4
Primary Face Cutters38
Secondary Face Cutters29
Gage Cutters12
Gage Length3
Nozzles7
Connection7-5/8 REG
Length (Overall, Make-Up)22-3/4, 17-1/2


The M-3167D is designed for drilling float equipment, spud-in and surface holes to replace large diameter milltooth bits. Problem shales, gumbos and even gravel beds can be drilled with the M-3167D in waterbase muds. The inner 3 nozzles can be blanked off for rigs with reduced pump capacity. Versions of the M-3167D are available with several PDC cutter options, including carbide wedge cutters for broken formations. All M-Series bits have Super Duty gage protection as standard, along with our Twin Cutter (D) option. The standard product configuration is seven (7) nozzles.
OPERATING PARAMETERS 14-3/4
Make-Up Torque (max)40-50K ft/lb
Flow Rate (GPM)80-1200
RPM Range50-150
Bit Weight (LBS)2K 28K



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