DWD Specifications

Positive Pulse System Specifications

Positive Pulse Assembly Copyright 2000, Halliburton Energy Services, Inc. 1January 25, 2001

Positive Pulse System SpecificationsTable 1 DWD System Specifications

Tool OD 3 1/8 in.3 3/8 in.3 1/2 in.

4 3/4 in. 6 1/2 in.6 3/4 in.7 1/4 in.

7 3/4 in. 8 in. 9 1/2 in.

MechanicalSpecificationsSystem Superslim Slimhole 650 650

1200 w/1500 Opt650

1200 w/1500 Opt650

1200 w/1500 OptLength(Dir/Gamma)

21-36 ft 31 ft hang-offcollar

26-36 ft1 26-36 ft1 26-36 ft1 or 30 fthang-off collar

26-36 ft1 or 30 fthang-off collar

Nominal Collar ID 2 5/16 in. 2 13/16 in. 2 13/16 in. 3 1/4 in. 3 1/4 in. & 4 in. 3 1/4 in. & 4 in.Connections 2 3/8 in. IF

box-pin

Modified 215/16"-6Stub Acme-M2

3 1/2 in. IFbox-pinbox-box

Variable 5 1/2 in. FH or6 5/8 in. Reg box-pin

6 5/8 in. Regbox-pin

7 5/8 in. Regbox-pin

Recommendedminimum make-uptorque

3,700 ft-lb – 2 3/8"IF (NC 26)

3,200 ft-lb -Modified 2 15/16"-6Stub Acme-M2

9,900 ft⋅lb Variable 5 1/2 in. FH -41,500 ft⋅lb

6 5/8 in. Reg -47,000 ft⋅lb

47,000 ft⋅lb 83,000 ft⋅lb

Maximum DoglegSeverity2

SlidingRotating

30°/100 ft14°/100 ft

30°/100 ft14°/100 ft

21°/100 ft10°/100 ft

14°/100 ft8°/100 ft

14°/100 ft8°/100 ft

14°/100 ft8°/100 ft

EquivalentBending Stiffness

3.21 in. x 1.50 in.3.35 in. x 1.50 in.

4.50 in. x 2.00 in. 6.25 in. x 2.81 in.6.50 in. x 2.81 in.7.00 in. x 2.81 in.

7.50 in. x 2.81 in. 7.75 in. x 2.81 in. 9.25 in. x 3.00 in.

Operating LimitsMaximumoperating temp

Limited by sondes Limited by sondes Limited by sondes Limited by sondes Limited by sondes Limited by sondes

Maximumpressure

Limited bypressure case






Flow rate 60-175 gpm3

100-220 gpm4150-350 gpm 225-650 gpm 225-650 gpm

400-1,500 gpm225-650 gpm400-1,500 gpm

225-650 gpm400-1,500 gpm

Maximum mudweight

12 ppg3

18 ppg418 ppg 18 ppg 18 ppg 18 ppg 18 ppg

Maximum mudviscosity

50 cp 50 cp 50 cp 50 cp 50 cp 50 cp

Maximum sandcontent5

<2%,Recommended<1%

<2%,Recommended<1%

<2%,Recommened <1%

<2%,Recommended<1%>1100 gpm <1%6



LCM <7.5 ppb3

>7.5 ppb440 lb/bbl medium nutplug, fine kwik seal

Hematite Not recommendedMud screenrecommended

Yes Yes Yes Yes Yes Yes

Pulsation damper Recommended charge to maximum of 40% of standpipe pressureTypical pressureloss over tool withwater at systemflow rate range

@ 150 gpm120 psi

140-300 psi 140-300 psi 140-300 psi 140-300 psi 140-300 psi

1 Based on 6 ft hang-off sub, customer-supplied 30 ft NMDC; varies, depending on NMDC length.2 For standard collars only; flexed collars are also used, and their maximum values are higher for the same nominal OD.3 Superslim Straight Flow Sub –TechFax D-DWD-130.4 Superslim Undercut Flow Sub –TechFax D-DWD-130.5 Districts may specify different limits for sand content.6 At more than 1,100 gpm, the sand content is limited to 1% or less and the bit run duration is limited to 75 hours.



Table 2 Superslim and Slimhole Systems HOS’s and HOC’s

System Type ODinch

Collar Bore IDinch

Pin Con. IDinch

Flow Ratesgpm

Superslim Special 3 1/8, 3 1/2 2 5/16 (2.313) 1 3/4 60-175 gpm7

100-220 gpm8

Slimhole HOC 4 3/4 Box x Pin, Box x Box 2 13/16 ( 2.812) 2 5/8 (2.625) 150-350

Table 3 650 System HOS’s and HOC’s

System Type ODinch

Collar Bore IDinch

Pin IDinch

Flow Ratesgpm

650 HOS 6 1/2, 6 3/4, 7, 7 1/4 2 7/8 (2.88) 225-650650 HOS 7 3/4, 8, 9, 9 1/2 3 5/16 (3.31) 225-650650 HOC 6 1/2, 6 3/4 3 1/4 (3.25) 2 7/8 (2.88) 225-650

Table 4 1200 System HOS’s and HOC’s

System Type ODinch

Collar Bore IDinch

Pin IDinch

Flow Ratesgpm

1200 HOS 7 3/4, 8, 9, 9 1/2, 10 3 5/16 (3.31) 400-12001200 HOS 11 4 1/32 (4.03) 400-12001200 HOC 8, 8 1/4, 9 1/2 4 3 5/16 (3.31) 400-1200

1500 Opt. HOC 8, 8 1/4, 9 1/2 4 3 5/16 (3.31) 1200-1500

Table 5 DWD Collar ID and Flow Rate Limits

Collar Bore IDinch

Max Flow Rategpm

2 13/16 6503 8003 1/4 12004 1500

Table 6 Directional Probe SpecificationsMEP DEP DEPII PCD, PCD-K, PCD-

RDM

System AccuracyInclination ± 0.2º ± 0.2º ± 0.2º ± 0.2º ± 0.1ºAzimuth ± 1.5º @ >10º Inc ± 1.5º @ >10º Inc ± 1.5º @ >10º Inc ± 1.5º @ >10º Inc ± 0.25ºToolface ± 2.8º ± 2.8º ± 2.8º ± 2.8º ± 1.5ºOperating LimitsMax Temperature 257º F (125º C) 284º F (140º C) 284º F (140º C) 302º F (150º C) 347º F (175º C)Survival Temperature 392º F (200º C)Max Pressure 18,000 psi Standard

15,400 psi Superslim918,000 psi Standard15,400 psi Superslim9

18,000 psi Standard15,400 psi Superslim9

20,000 psi Standardxx,xxx psi Superslim

22,500 psi - 2 in. OD16,500 psi - 1 7/8 in. OD9

Tool OD 1 3/ in. (1 3/4 in. wheninstalled in protectivecase)

1 3/8 in. (1 3/4 in. wheninstalled in protectivecase)

1 3/8 in. (1 3/4 in. wheninstalled in protectivecase)

1 3/4 in. 2 in1 7/8 in. for collars < 3 ½in. OD

Connections

Top 7-pin M 7-pin M 10-pin M 10-pin M KemlonBottom None None 7-pin M PCD - 7-pin M

PCD-R - KemlonKemlon

7 Superslim Straight Flow Sub –TechFax D-DWD-130.8 Superslim Undercut Flow Sub –TechFax D-DWD-130.9 Unofficial calculated burst pressure, verbal communication with E.J. Del Valle, November 2, 2000.



Table 7 Gamma Probe SpecificationsSPC-NGP PCG, PCG-R GM

System AccuracyGamma Range & ResolutionTransmitted

Low Range 0-25.5 ± 0.1 cpsHigh Range 0-76.5 ± 0.6 cps

Low Range 0-25.5 ± 0.1 cpsHigh Range 0-76.5 ± 0.6 cps

0-31.25 ± 0.125 cps with 8 Gammul setting0-41.75 ± 0.167 cps with 6 Gammul setting0-62.5 ± 0.250 cps with 4 Gammul setting

Gamma Resolution Recorded 0-31.25 ± 0.125 cps with 8 Gammul setting0-41.75 ± 0.167 cps with 6 Gammul setting0-62.5 ± 0.250 cps with 4 Gammul setting

System Accuracy ± 5 API @ 50 API ± 5 API @ 50 APIVertical Resolution 6 in. 6 in. 27 in

Detector Scintillation Scintillation Geiger MüllerStorage

MinimumMaximum

13,284 samples36.9 hr @ 10 sec/sample350.4 hr @ 95 sec/sample

26,000 samples72.2 hr @ 10 sec/sample686.1 hr @ 95 sec/sample

250 hr of API data at 8 sec sample period

Gamma UpdateOperating LimitsMax Temperature 257º F (125º C) 302º F (150º C) 347º F (175º C)Survival Temperature 392º F (200º C)Max Pressure 18,000 psi Standard

15,400 psi Superslim1020,000 psi Standardxx,xxx psi Superslim

22,500 psi - 2 in. OD16,500 psi - 1 7/8 in. OD10

Tool OD 1 3/8 in. (1 3/4 in. wheninstalled in protective case)

1 3/4 in. 2 in1 7/8 in. for collars < 3 1/2 in. OD

ConnectionsTop 7-pin PCG - 7-pin

PCG-R - 10-pinKemlon

Bottom 7-pin 7-pin Kemlon

Table 8 Pulser SpecificationsMk VI Mk VII Mk VIII

Maximum Temperature 347º F (175º C) 392º F (200º C) 392º F (200º C)Connection Type 7-pin Amphenol Rotational RotationalMax Pressure Limited by probe

10 Unofficial calculated burst pressure, verbal communication with E.J. Del Valle, November 2, 2000.



Table 9 TorqueSize and Type of Connection HOC/HOS OD HOC

BorePin Bore Minimum

Recommended TorqueIn DWDmanual

2.750-8 STUB ACME 3 1/8 2.125 ?2.875-6 STUB ACME-MOD 2 3 1/8 2.125 ?

2 15/16-6 STUB ACME-MOD 2 3 1/4 2.313 ?2 15/16-6 STUB ACME-MOD 2 3 1/2 2.313 3,200 ft-lb Ok

NC 26 3 1/4 1.75NC 26 3 1/2 1.75 3,700 ft-lb Ok

NC 38 4-3/4 2.625 9,900 ft-lb Ok

4" API IF 6-1/2 2.88 22,200 ?4" API IF 6-3/4 2.88 22,200 ?

4-1/2" API FH 6-1/2 2.88 19,800 Ok

4-1/2" API IF 6-1/2 2.88 29,500 Ok4-1/2" API IF 6-3/4 2.88 32,000 Ok4-1/2" API IF 7 2.88 32,000 Ok4-1/2" API IF 7 1/4 2.88 32,000 Ok

4-1/2" H-90 6-1/2 2.88 23,000 ?4-1/2" H-90 6-3/4 2.88 23,000 ?

5 ½ API REG 6-3/4 2.88 31,500 Ok5 ½ API REG 7 2.88 36,000 Ok5 ½ API REG 7 1/4 2.88 36,000 Ok

5" H-90 6-1/2 2.88 29,500 Ok5" H-90 6-3/4 2.88 29,500 Ok5" H-90 7 2.88 29,500 Ok

5 1/2" H-90 7 1/4 2.88 36,000 ?

5-1/2" API FH 7 3/4 3.31 41,500 Ok

6 5/8" API REG 7 3/4 3.31 47,000 Ok6 5/8" API REG 8 4 3.31 47,000 Ok

6 5/8" H-90 7 3/4 3.31 49,500 Ok6 5/8" H-90 8 3.31 49,500 Ok

7" H-90 Low Torque 9 3.31 66,500 Ok

7 5/8" API REG 9 4 3.31 83,000 Ok7 5/8" API REG 9 1/2 4 3.31 83,000 Ok

7 5/8" API REG LOW TORQUE 10 3.31 87000 Ok



8 5/8" API REG LOW TORQUE 11 4.03 ?

Documents

DWD Specifications