Bitsstuff.xls

7/28/2019 Bitsstuff.xls

1/13


2/13

I AD C classif ication : Rock bits Series 1 2 3 4 5

Milled tooth bits.

Standardroller bearing

Roller bearingair cooled

3Sealed roller

bearing

Sealed beargauge

protecte

1 Soft formations 1. Very soft shaleLow compressive strengths 2. Soft shales

3. Medium soft shale / lime

4. Medium lime shale

2 Medium - Medium hard formation 1. & 2. Medium lime / shaleHigh compressive strengths 3. Medium hard lime/sand/slate.

3 Hard 1. Hard limeSemi-abrasive formations. 2. Hard lime/dolomite

3. Hard dolomite

TCI/Insert bits.4 Soft formations 1. Very soft shale

Low compressive strengths 2. Soft shales.3. Medium soft shale / lime

4. Medium lime shale.

5 Soft - medium hard formations 1. Very soft shale / sand.Low compressive strengths 2. Soft shale / sand.

3. Medium soft shale / lime.

6 Medium - hard formations 1. Medium lime / shale.High compressive strengths 2. Medium hard lime / sand.

3. Medium hard lime/sand/slate

7 Hard semi - abrasive 1. Hard lime / dolomite.

and abrasive formations 2. Hard sand /dolomite.3. Hard dolomite.

8 Extremely hard & abrasive 1. Hard chert.& abrasive 2. Very hard chert.

3. Hard granite.

F ormation types

Kingdom drilling services Ltd.www.kingdomdrilling.com


3/13

I ADC classif ication : PDC bits A B C D

Bit body F ormation type Cutting structure Bit prof ile.

"M" Matrix 1 Very soft 2 PDC, 19mm 1 Short fishtail"S" Steel 3 PDC, 13mm 2 Short profile

"D" Diamond 4 PDC, 8mm 3 Medium profile

2 Soft 2 PDC, 19mm 4 Long profileExample 3 PDC, 13mm

M Matrix 4 PDC, 8mm

4 Medium 3 Soft to medium 2 PDC, 19mm3 PDC 13mm 3 PDC, 13mm

4 Long profile 4 PDC, 8mm

4 Medium 2 PDC, 19mm3

PDC, 13mm4 PDC, 8mm

5 no code

6 Medium hard 1 Natural diamond2 TSP3 Combination

7 Hard 1 Natural diamond2 TSP3 Combination

8 Extremely hard 1 Natural diamond4 Impregnated diamond

Kingdom drilling services Ltdwww.kingdomdrilling.co.uk


4/13

Manufacturer Feature and 4th Character Security / DBS Hughes Reed Smith

A Air application (journal bearing with air nozzl

A A AB Special bearing bit Standard ** ATM*C Centre jet J4 C* JC CD Deviation control D* A1E Extended jets (full length) E T* JX EG Extra gauge / body protection G*, M*, D, SS* M*, D, G JK G, L, D, ODH Horizontal / Steering Application Hx*, SS*, MM* M* M*J Jet deflection JD JD BH*L Lug pads L P* JL LM Motor application SS*, MM*, M* MAX* M* M*S Standard steel tooth model TC* A1T Two cone 2* D Dw Enhanced cutting structure DX Predominantly chisel toothed inserts - A

Y Predominantly conical inserts CFZ Other shaped inserts C*

* Prefix, usually precedes bit number, others are suffices.** Special HDS seal available as standard feature.

The 4th Character IADC code.

Kingdom drilling services Ltd.

www.kingdomdrilling.co.uk


5/13

Total flow area (TFA) of Standard nozzles (ins2)

Number of nozzles

Nozzle size 1 2 3 4 5 6 7 8 9

7/32 0.038 0.075 0.113 0.150 0.188 0.225 0.263 0.301 0.338

3/8 0.110 0.221 0.331 0.442 0.552 0.663 0.773 0.884 0.9949/32 0.062 0.124 0.186 0.249 0.311 0.373 0.435 0.497 0.5595/16 0.077 0.153 0.230 0.307 0.383 0.460 0.537 0.614 0.690

11/32 0.093 0.186 0.278 0.371 0.464 0.557 0.650 0.742 0.8353/8 0.110 0.221 0.331 0.442 0.552 0.663 0.773 0.884 0.994

13/32 0.130 0.259 0.389 0.518 0.648 0.778 0.907 1.037 1.1677/16 0.150 0.301 0.451 0.601 0.752 0.902 1.052 1.203 1.353

15/32 0.173 0.345 0.518 0.690 0.863 1.035 1.208 1.381 1.5531/2 0.196 0.393 0.589 0.785 0.982 1.178 1.374 1.571 1.767

17/32 0.222 0.443 0.665 0.887 1.108 1.330 1.552 1.773 1.9959/16 0.249 0.497 0.746 0.994 1.243 1.491 1.740 1.988 2.237

19/320.277 0.554 0.831 1.108 1.384 1.661 1.938 2.215 2.492

5/8 0.307 0.614 0.920 1.227 1.534 1.841 2.148 2.454 2.76121/32 0.338 0.676 1.015 1.353 1.691 2.029 2.368 2.706 3.04411/16 0.371 0.742 1.114 1.485 1.856 2.227 2.599 2.970 3.34123/32 0.406 0.811 1.217 1.623 2.029 2.434 2.840 3.246 3.652

3/4 0.442 0.884 1.325 1.767 2.209 2.651 3.093 3.534 3.976

Kingdom rilling Services Ltd.www.kingdomdrilling.com


6/13

Bit calculations

Insert values to view blue results.Bit cost () 23,000 Mud weight (ppg) 11 ppgRig cost (/hr) 4,000.00 Flow rate (gpm) 950 GPM

Trip time (hrs) 18.0 hrs Total flow area (in 2) 0.81 sq in

In hole time (hrs) 200.0 hrs Hole size (inches) 12.25 insFootage drilled (ft 3560 ft Hole area 118 sq in

Cost per foot 251.4 /ft Bit pressure drop 1129 psi

Bit Hydraulic horse power 626 hp

Jet velocity 375 ft/sec

Hydraulic horse power per square inch 5.3 HSI

Rules of thumbWater based muds: aim for 4-8 HSI, jet velocities 350-550ft/secOil based muds: 3-6 HSI, jet velocities 250-450ft/sec>17 1/2" holes : minimum jet velocities must be attained


7/13

Bit weight(Klbs)

Time to drilloff 10K (seconds)

Footage drilled(ft)

Rate of penetration

(ft/hr)RPM

Time to drill 1ft(seconds)

Rpen

50 Klbs 60 secs 0.6 ft 36 ft/hr 140 RPM 120 secs45 Klbs 68 secs 0.6 ft 29 ft/hr 130 RPM 110 secs

40 Klbs 73 secs 0.6 ft 27 ft/hr 120 RPM 100 secs35 Klbs 75 secs 0.5 ft 22 ft/hr 110 RPM 108 secs30 Klbs 82 secs 0.5 ft 22 ft/hr 100 RPM 118 secs50 Klbs 62 secs 0.6 ft 35 ft/hr 140 RPM 124 secs

Weight on bit optimisation Rotary optimisation

Drill off test

36 ft/hr

33 ft/hr

31 ft/hr

25 ft/hr

30 ft/hr

35 ft/hr

40 ft/hr

100 RPM 120 RPM

R a

t e o

f p e n e

t r a

t i o n

RPM

Drill off test (RPM)

60 secs

68 secs

73 secs

75 secs

82 secs

62 secs

60 secs

70 secs

80 secs

90 secs

30 Klbs 40 Klbs 50 Klbs

R a

t e o

f p e n e

t r a

t i o n

Weight on bit

Drill off test (WOB)

Kingdomdrilling services Ltdwww.kingdomdrilling.co.uk


8/13

Bit API Reg. Pin Make up *ft/lbs

O. D. (in) Pin connection, size&type Torque (ftlbs)

3-3/4 - 4-1/2 2 3/8 reg 3500 ftlbs

4-5/8 - 5 2 7/8 reg 7000 ftlbs

5-1/8 - 7-3/8 3 1/2 reg 9000 ftlbs

7-5/8 - 9 4 1/2 reg 16000 ftlbs

9-1/2 - 14-1/2 6 5/8 reg 32000 ftlbsOver 14-1/2 7 5/8 reg 40000 ftlbs

API Roller cone bit tolerances..

Bit size : Nominal ( in inches )

5 5/8" - 13 3/4" + 1 / 32" minus 0

14" - 17 1/2 " + 1 / 16" minus 017 5/8" and larger + 3 / 32 " minus 0

API Diamond Bit Tolerances - PDC, Natural Diamond, TSPNominal Bit Size O.D. (ins) O.D. Tolerance (inches)

6-3/4 and Smaller +0, - 0.015

6-25/32 to 9, Incl. +0, - 0.020

9-1/32 to 13-3/4, Incl. +0, - 0.03013-25/32 to 17-1/2, Incl. +0, - 0.045

Recommended drilling parameters, PDC bits.

Bit size(inches) Rotary (RPM)Weight onbit (Klbs)

Flow rate (GPM)

5 7/8 100 - 140 15 - 40 160 - 2606 100 - 140 15 - 40 160 - 280

6 100 - 140 15 - 40 220 - 3506 100 - 140 15 - 40 250 - 3507 7/8 80 - 120 15 - 40 300 - 4008 80 - 120 15 - 40 300 - 5008 80 - 120 15 - 40 350 - 5509 7/8 60 - 120 15 - 40 400 - 650

10 5/8 60 - 120 15 - 40 600 - 80012 60 - 100 15 - 40 650 - 950

Recommended flow rates for diamond bits.

Bit size(inches) Type Stone Size Exp. Flow rate (GPM)6" MD34 2 n/a 180

MD31 3 n/a 180

MD33 4 n/a 180

8 " MD34 1 0.05 380MD31 4-Mar 0.04 380

MD33 6 0.03 380

MD70 carat 0.45 (appr) 380

12 " MD34 1 0.5 700MD31 2 0.045 700

MD33 4-Feb 0.045 700

MD 197 1 carat 0.06 500 - 700

Kingdom drilling services Ltdwww.kingdomdrilling.co.uk


9/13

Bit record / hydraulics details.

Bit details Bit hydraulics Depth Feet Total Rot ROP ParameteNo Size Mfgr Type Ser No Jets 32'nds TFA HSI ft/sec Out made Hrs Hrs feet WOB RPM

1 rr3 26.00 REED Y11 JE2828 20 20 20 20 1.2 0.7 312 638 259 12.5 5.5 47 6 60/9

2 26.00 REED Y12 JE2828 20 20 20 20 1.2 0.8 286 638 0 2 0.5 0 5/15 60/90

3 rr2 17.50 Smith MSHOD CER4749 20 20 18 18 1.1 1.7 294 2550 1912 20 12.6 152 5/15 130

4 12.25 DBS QP19M 5940299 7 x 13 0.9 4.3 306 5761 3211 29 16.9 190 25/55 50/110

5 12.25 ReedEHP

51HDL5940299 18 18 18 0 0.7 6.4 374 6148 387 16 14.3 27 35/50 120

6 12.25 BBits BB657 BB404413 2x 12 4x 14 0.8 5.1 336 7070 922 23 19.0 49 15/35 140/17

7 8.50 Bbits BB657 405424RR 6 x 12 0.7 3.7 242 7085 15 3 1.0 15 7580 170

Press

Spud Date & time :

TD date and time :

Days spent on well to TD :

Field :Well No :

Well type :

Kingdom drilling servwww kingdomdrillin


10/13

Bit conditions descriptions

Code number Subject of description Chioice code

1 Amount of life used of inner row of cutters 01-78

2 Amount of life used of outer row of cutters 01-78

3 Description of damage or condition BCBTBUCC

CDCICRCTECFCHCJDLCLTNOOCPBPNRGROSDSSTRWOWT

4 Area of wear ACGHMNST

5 Amount of bearing life used 01-78E


11/13

FX or D

6 Gauge 1 - 16I

7 Second description of damge/condition As in code '3'

8 Reason for pulling the bit BCBHACMCP

DMFDP

DSTDTFFMHPHRLN

LOGPRRRTDTQTWWCWKWT


12/13

Description of choice code

No life usedEights of life usedTotal life used

No life usedEights of life usedTotal life used

Broken coneBroken teethBalled up bitCracked cone

Cone draggedCone InterferanceCoredChipped teethEroded coneFlat crested wear Heat checkingJunk damageLost coneLost teethNo dull char offcentre wear Penched bitPlugged jet/flowRounde gaugeRing outShirt tail damageSelf sharpeningTrackingWashed outWorn teeth

All areasConeGaugeHeel rawMiddle rawNoseShoulder Taper

No life usedEights of life usedTotal life usedSeal effective for journal bearing


13/13

Documents

Bitsstuff.xls