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Mill
ed T
ooth
Bits
Seri
es
Formations
Type
Reed
Hyca
log
Reed
Hyca
log
Standard Roller
Soft formationswith low compressionstrength and highdrillability
Hard semiabrasive orabrasive formations
Medium to medium-hardformations with highcompressive strength
Sealed Bearing Sealed Roller Bearing and Gauge Protection Friction Bearing
Features
Hugh
es
Hugh
es
Smith
Smith
Secu
rity
Secu
rity
Secu
rity
DR5
R7
Smith
Reed
Hyca
log
XN5
Smith
Secu
rity
Note: Bits shown are based on individual manufacturer’s published availabilty data. Comparisons may differ in particular drilling areas. Your ReedHycalog representative can provide specific data for your needs.
IADC Code Roller Cone Tooth Bit Comparison Chart
Reed
Hyca
log
Hugh
es
Smith
Secu
rity
Hugh
es
DTJ HP12 FDT SL12, HP12
Reed
Hyca
log
L4H
XN4V2J FVHFV XS4, XL4SVH, MSVH XT4 ATJ-4 HP21G ATJ-G4
ATJ-G8
Y13 XN3R3 DGJ GTX-3 MCG+ FDGH, MFDGHHP13 FDG XS3, XL3T13EMS13GETS136
GTX-G3, MAX-GT3MX-3
SDGH, MSDGHMGGH+
XT3 D13, HP13G MX-3
Y11 XN1R1 GTX-1 MFDSH, FDSH+, MFDSSH, FDS+2FDSS+2, FGS+, FGS+2, FGSH+FDSS+, FGSS+2, XR+, FGSSH+, FGXi
HP11DSJ SDS FDS FDSS+
XS1, XL1T11EMS11GETS11G
GTX-G1, MAX-GT1MX-1
MSDSH, MSDSSHGGSSH+, MGSH+
XT1 GT-1 SL11, TC10TC11, TD11D11
XLX-1, GT-G1HGT-G1, STX-1MX-1, STR-1
Hugh
es
Sealed Friction Bearing and Gauge Protection
TM
Other dull characteristicRefer to column three codes.
7
Reason pulled or run terminated8
BHA – change bottomhole assemblyDMF – downhole motor failureDTF – downhole tool failureDSF – downhole string failureDST – drill stem testLOG – run logsLIH – left in holeRIG – rig repairCM – condition mudCP – core pointDP – drill plugFM – formation changeHP – hole problemsHR – hours on bitPP – pump pressurePR – penetration rateTD – total depth/casing depthTQ – torqueTW – twist offWC – weather conditions
Gauge measure in 1⁄16 of an inch.6I – In gauge1⁄16–1⁄16 in. out of gauge2⁄16–1⁄8 in. out of gauge4⁄16–1⁄4 in. out of gauge
Location4
N – nose rowM – middle rowG – gauge rowA – all rows
Cone no.123
Roller cone
C – coneN – noseT – taper
S – shoulderG – gaugeA – all areas
Fixed rutter
Bearings/seals5
A linear scale estimating bearing life used. (0 – No life used, 8 – All life used, i.e., no bearing life remaining.)
E – seals effectiveF – seals failedN – not able to gradeX – fixed cutter bit (bearingless)
Nonsealed bearings
Sealed bearings
NozzleSize(in. [mm])
NozzleNumber
7
8
9
10
11
12
13
14
15
16
18
20
22
24
28
7⁄32 [5.5]1⁄4 [6.4]9⁄32 [7.1]5⁄16 [7.9]11⁄32 [8.7]3⁄8 [9.5]13⁄32 [10.3]7⁄16 [11.1]15⁄32 [11.9]1⁄2 [12.7]9⁄16 [14.3]5⁄8 [15.9]11⁄16 [17.5]3⁄4 [19.0]7⁄8 [22.2]
0.0376 [24.3]
0.0491 [31.7]
0.0621 [40.1]
0.0767 [49.5]
0.0928 [59.5]
0.1104 [71.2]
0.1296 [83.6]
0.1503 [97.0]
0.1726 [111.4]
0.1963 [126.6]
0.2485 [160.3]
0.3068 [197.9]
0.3712 [239.5]
0.4418 [285.0]
0.6013 [387.9]
0.0752 [48.5]
0.0982 [63.4]
0.1242 [80.1]
0.1534 [99.0]
0.1856 [119.7]
0.2209 [142.5]
0.2592 [167.2]
0.3007 [194.0]
0.3451 [222.8]
0.3927 [253.2]
0.4970 [320.6]
0.6136 [395.9]
0.7424 [479.0]
0.8836 [570.1]
1.2026 [775.9]
0.1127 [72.9]
0.1473 [95.0]
0.1864 [120.2]
0.2301 [148.4]
0.2784 [179.6]
0.3313 [213.7]
0.3889 [250.9]
0.4510 [291.0]
0.5177 [334.2]
0.5890 [379.8]
0.7455 [481.0]
0.9204 [593.8]
1.1137 [718.5]
1.3254 [855.0]
1.8040 [1163.7]
0.1503 [97.0]
0.1963 [126.1]
0.2485 [160.3]
0.3068 [197.9]
0.3712 [239.5]
0.4418 [285.0]
0.5185 [334.5]
0.6013 [388.0]
0.6903 [445.4]
0.7854 [506.7]
0.9940 [641.3]
1.2272 [791.8]
1.4849 [958.1]
1.7672 [1140.2]
2.4053 [1551.9]
Flow Areaof One Nozzle
Flow Areaof Two Nozzles
Flow Areaof Four Nozzles
Flow Areaof Three Nozzles
Jet
Noz
zle
Flo
w A
reas
1
2
Inner cutting structure(all inner rows)
Outer cutting structure(gauge row only)
In columns 1 and 2, a linear scale from 0 to 8 is used to describe the condition of the cutting structure according to the following:
Steel tooth bitsA measure of lost tool height resulting from abrasion and/or damage.0 – No loss of tooth height.8 – Total loss of tooth height.
Insert bitsA measure of total cutting structure reduction resulting from lost, worn and/or broken inserts.0 – No lost, worn and/or broken inserts.8 – All inserts lost, worn and/or broken.
Fixed cutter bitsA measure of lost, worn and/or broken cutting structure.0 – No lost, worn and/or cutting structure.8 – All of cutting structure Lost, worn and/or broken.
3 Dull characteristics (Use only cutting structure related codes.)
BC – broken coneBF – bond failureBT – broken teeth/cuttersBU – balled up bitCC – cracked coneCD – cone draggedCI – cone InterferenceCR – coredCT – chipped teeth/cuttersER – erosionFC – flat crested wearHC – heat checkingJD – junk damageLC – lost coneLN – lost nozzleLT – lost teeth/cuttersOC – off-center wearPB – pinched bitPN – plugged nozzle/flow passageRG – rounded gaugeRO – ring outSD – shirttail damageSS – self-sharpening wearTR – trackingWO – washed out bitWT – worn teeth/cuttersNO – no dull characteristic
†Show Cone number or numbers under location
Bit Size(in. [mm])
API Pin Size(in. [mm])
Recommended Torque(lbt-ft [Newton])
33⁄4–41⁄2 [95.2–114.3]
45⁄8–5 [117.5–127.0]
51⁄8–73⁄8 [136.5–187.3]
75⁄8–9 [193.7–228.6]
91⁄2–26 [241.3–660.4]
143⁄4–26 [374.6–660.4]
23⁄8 [60.3]
27⁄8 [73.0]
31⁄2 [88.9
41⁄2 [114.3]
65⁄8 [168.3]
75⁄8 [193.7]
3,000–3,500 [4,000–4,800]
6,000–7,000 [8,000–9,500]
7,000–9,000 [9,500–12,000]
12,000–16,000 [16,000–22,000]
28,000–32,000 [38,000–43,000]
34,000–40,000 [46,000–54,000]
Recommended Roller Cone
Makeup Torque
IADC
Dul
l Bi
t Gr
adin
gCutting Structure
LocationInner
1
Outer
2 4
Bearings/Seals
5
Gauge
6
Other Dull Characteristics
7
Reason Pulled
8
Dull Characteristics
3
(in.2 [mm2]) (in.2 [mm2])(in.2 [mm2])(in.2 [mm2])
†
††
†
Revision Date :5-19-04