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8/8/2019 Brocas Uso e Informe

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Kingdom drilling services Ltd.www.kingdomdrilling.co.uk

IADC : Dull Bit Grading

Cutting structure

Inner Outer Dull Char LocationBearings seals Gauge O

1 2 3 4 5 6

1 - 4 - Location2 - Roller cone

Steel toothed bits Measure of lost tooth height due to abrasion and / or damage

0 - No loss of tooth height

8 - Total loss of tooth

Insert bits 5 - Bearings and seal0 - No lost worn and / or broken inserts Non sealed bearings

8 - 0% of inserts and / or cutting structure remaining. A linear scale estimating bearing life is used

Fixed cutter bits Measure of lost tooth height due to abrasion and / or damage 0 = No life used ---> 8, 100% bearing life used

0 - No lost, worn and / or broken cutting structure 6 - Gauge

8 - 100% of cutting structure lost, worn and / or broken

3 - Dull characteristicsNote: use only cutting structure related codes

7 - Other dull characte

8 - Reasons bit was p

Example of bit grading : 2, 4,

Inner cutting structure(All inner rows.)

Outer cutting structure( Gauge rows only.)

In columns 1 and 2 a linear scale of 0 ---> 8 is used to describe the condition of the cuttingstructure according to the following guidelines for specific bit types. N- Nose row G - Gauge row

M - Middle row A - All Rows

State cone # or #'s I.e. 1, 2, or 3.

Measures total cutting structure reduction of lost, worn, & or brokeninserts

E

N

x - in gauge 1/16- 1/16" out of gauge 1/8

1/4- 1/14" out of gauge 5/16 - 5/16" out of gauge 3/8

1/2 - 1/2" out of gauge 9/16- 9/16" out of gauge 5/8

BC - Broken cone * LN - Lost nozzle

BF - Bond failure LT - Lost teeth and cutters Refer to colum

BT - Broken teeth and cutters OC - Off centre wear

BU - Balled up bit PB - Pinched bit BHA- Change bottom hol HR

CC - Cracked cone * PN- Plugged nozzle or flow by areas DMF - Downhole motor failure LO

CD - Cone dragged * RG - Rounded gauge DTF - Downhole tool failure PPCI - Cone interference RO - Ring out DSF - Drill string failure PR

CR- Cored SD - Shirttail damage DST - Drill stem test Rig

CT - Chipped Teeth & cutters SS - Shelf sharpening wear DP - Drill Plug TDER- Erosion TR- Cone tracking CM - Condition mud TW

FC - Flat crested wear WO - Wash out CP - Core point TQ

HC - Heat checking WT - Worn teeth or cutters FM - Formation change WC

LD - Junk damage NO - No dull characteristics HP - Hole problems

LC - Lost cone * *Show cone # or #'s under location 4 LIH - Left in hole


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Kingdom drilling services Ltd.

IADC classification : Rock bits

Series Formation types 1 2 3 4 5

Milled tooth bits.

3

1 Soft formations 1. Very soft shale

Low compressive strengths 2. Soft shales

3. Medium soft shale / lime

4. Medium lime shale

2 Medium - Medium hard formation1. & 2. Medium lime / shale

High compressive strengths 3. Medium hard lime/sand/slate.

3 Hard 1. Hard lime

Semi-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.

Standardroller bearing

Roller bearingair cooled

Sealed rollerbearing

Sealed beagauge

protect


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IADC classification : PDC bits

A B C D

Bit body Formation type Cutting structure Bit profile.

"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 profile

Example 3 PDC, 13mm

M Matrix 4 PDC, 8mm

4 Medium 3 Soft to medium 2 PDC, 19mm

3 PDC 13mm 3 PDC, 13mm

4 Long profile 4 PDC, 8mm

4 Medium 2 PDC, 19mm

3 PDC, 13mm

4 PDC, 8mm

5 no code

6 Medium hard 1 Natural diamond

2 TSP

3 Combination

7 Hard 1 Natural diamond

2 TSP3 Combination

8 Extremely hard 1 Natural diamond

4 Impregnated diamond


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Kingdom drilling services Ltd.www.kingdomdrilling.co.uk

Manufacturer

Feature and 4th Character Security / DBS Hughes Reed Smith

A A A A

B Special bearing bit Standard ** ATM*

C Centre jet J4 C* JC C

D Deviation control D* A1

E Extended jets (full length) E T* JX E

G Extra gauge / body protection G*, M*, D, SS* M*, D, G JK G, L, D, OD

H Horizontal / Steering Application Hx*, SS*, MM* M* M*

J Jet deflection JD JD BH*

L Lug pads L P* JL L

M Motor application SS*, MM*, M* MAX* M* M*

S Standard steel tooth model TC* A1

T Two cone 2* D D

w Enhanced cutting structure D

X Predominantly chisel toothed inserts - A

Y Predominantly conical inserts CF

Z Other shaped inserts C** Prefix, usually precedes bit number, others are suffices.

** Special HDS seal available as standard feature.

The 4th Character IADC code.

Air application (journal bearing with air nozzl


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Kingdom rilling Services Ltd.www.kingdomdrilling.com

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 0.994

9/ 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 0.835

3/ 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 1.167

7/ 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 1.553

1/ 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 1.995

9/ 16 0.249 0.497 0.746 0.994 1.243 1.491 1.740 1.988 2.237

19/ 32 0.277 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 2.761

21/ 32 0.338 0.676 1.015 1.353 1.691 2.029 2.368 2.706 3.044

11/ 16 0.371 0.742 1.114 1.485 1.856 2.227 2.599 2.970 3.341

23/ 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


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Bit calculations

Insert values to view blue results.Bit cost () 23,000 Mud weight (ppg) 11 ppg

Rig cost (/hr) 4,000.00 Flow rate (gpm) 950 GPM

Trip time (hrs) 18.0 hrs 0.81 sq in

In hole time (hrs) 200.0 hrs Hole size (inches) 12.25 ins

Footage 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 thumb reglas

Water 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


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Kingdomdrilling services Ltdwww.kingdomdrilling.co.uk

Drill off test

Weight on bit optimisation Rotary optimisation

RPM

50 Klbs 60 secs 0.6 ft 36 ft/hr 140 RPM 120 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 secs



Bit weight(Klbs)

Time to drilloff10K (seconds)

Footage drilled(ft)

Rate ofpenetration

(ft/hr)

Time to drill 1ft(seconds)

pe

100 RPM 120 RPM

25 ft/hr

30 ft/hr

35 ft/hr

40 ft/hr

36 ft/hr

33 ft/hr

31 ft/hr

Drill off test (RPM)

RPM

Rateofpenetratio

n

30 Klbs 40 Klbs 50 Klbs

60 secs

70 secs

80 secs

90 secs

60 s

68 secs

73 secs

75 secs

82 secs

62 s

Drill off test (WOB)

Weight on bit

Rateofpenetra

tion


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Bit API Reg. Pin Make up *ft/lbs

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

3-3/4 - 4-1/2 1 9/8 reg 3500 ftlbs

4-5/8 - 5 2 3/8 reg 7000 ftlbs

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

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

9-1/2 - 14-1/2 5 3/8 reg 32000 ftlbs

Over 14-1/2 6 1/8 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 0

17 5/8" and larger + 3 / 32 " minus 0

API Diamond Bit Tolerances - PDC, Natural Diamond, TSP

Nominal 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, - 0.030

13-25/32 to 17-1/2, Incl. +0, - 0.045

Recommended drilling parameters, PDC bits.

Bit size(inches) Rotary (RPM) Flow rate (GPM)

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

6 100 - 140 15 - 40 220 - 350

6 100 - 140 15 - 40 250 - 350

7 7/8 80 - 120 15 - 40 300 - 400

8 80 - 120 15 - 40 300 - 500

8 80 - 120 15 - 40 350 - 550

9 7/8 60 - 120 15 - 40 400 - 650

10 5/8 60 - 120 15 - 40 600 - 800

12 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 180MD31 3 n/a 180

MD33 4 n/a 180

8 " MD34 1 0.05 380

MD31 4-Mar 0.04 380

MD33 6 0.03 380

MD70 carat 0.45 (appr) 380

12 " MD34 1 0.5 700

MD31 2 0.05 700

MD33 4-Feb 0.05 700

MD 197 1 carat 0.06 500 - 700

Weight onbit (Klbs)


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Bit record / hydraulics details.Field : Spud Date & time :

Well No : TD date and time :

Well type : Days spent on well to TD : Pra la profun pies hechos

Bit details Bit hydraulics Depth Feet Total Rot ROP Param

No Size Mfgr Type Ser No Jets 32'nds TFA HSI ft/sec Out made Hrs Hrs feet WOB R

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

2 26.00 REED Y12 JE2828 20 20 20 20 1.2 0.8 286 638 0 2 0.5 0 5/15 6

3 rr2 17.50 Smith MSHOD CER4749 20 20 18 18 1.1 1.7 294 2550 1912 20 12.6 152 5/15 1

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

5 12.25 Reed 5940299 18 18 18 0 0.7 6.4 374 6148 387 16 14.3 27 35/50 1

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

7 8.50 Bbits BB657 405424RR 6 x 12 0.7 3.7 242 7085 15 3 1.0 15 7580 1

EHP51HDL

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