Yantai Sanmon Machinery Equipments Co, Ltd

Drill Collar

2020-04-09 17:23 BrowseTimes

 DRILL COLLAR - STANDARD AND SPIRAL

 

Drill Collar is the basic component in the BHA which provides weight on the bit for drilling and keeps the drill string in tension. Our Drill Collar is manufactured from AISI 4145H modified quenched and tempered steel and is heat treated

along its entire length for uniform toughness and durability. Strict metallurgical tests are performed per specifications

to ensure that the heat treatment produces consistent and maximum hardness through the depth of the bar.

 

Features and Benefits

●A hardness range of 285 to 341 BH N and a Charpy impact value of 40 Ibs/ft are guaranteed for evenly distributed 16 points in any cross sections at room temperature;

●Connections are phosphate coated after machining to protect the threads from corrosive elements and to prevent galling upon initial make-up;

●Thread roots are cold rolled on API and H-90 connections;

●Pressed steel thread protectors are supplied for all drill collar that are equipped with standard connections 

 

When ordering please specify:

●Drill collar OD and ID;

●Overall length;

●Connections required (size and type);

●Special features desired, for example:

Slick or Spiral;

Stress Relief Features;

Slip and/or Elevato Recess;

Hardbanding;

Drill Collar Specifications 

 

Number And

Connection Table

OD

 

ID

 

Length

mm

Bevel Diameter mm

Bending Strength Ratio

mm

in

mm

in

NC23-31

79.4

3 1/8

31.8

1 1/4

9150

76.2

2.57:1

 

NC26-35(2 3/8 IF)

88.9

3 1/2

38.1

1 7/2

9150

84.5

2.42.1

 

NC31-41(2 7/8 IF)

104.8

4 1/8

50.8

2

9150

101.6

2.43:1

NC35-47

120.6

4 3/4

50.8

2

9150

114.7

2.58:1

NC38-50(3 1/2 IF)

127

5

57.2

2 1/4

9150

121

2.38.1

NC44-60

152.4

6

57.2

2 1/4

9150 or 9450

144.5

2.49.1

NC44-60

152.4

6

71.4

2 13/16

9150 or 9450

144.5

2.84:1

NC44-62

158.8

6 1/4

57.2

2 1/4

9150 or 9450

149.2

291:1

NC46-62(4 IF)

158.8

6 1/4

71.4

2 13/16

9150 or 9450

150

2.63:1

NC46-65(4 IF)

165.1

6 1/2

57.2

2 1/4

9150 or 9450

154.8

2.76:1

NC46-65(4 IF)

165.1

6 1/2

71.4

2 13/16

9150 or 9450

154.8

3.05:1

NC46-67(4 IF)

171.4

6 3/4

57.2

2 1/4

9150 or 9450

159.5

3.18.1

NC50-67(4 1/2 IF)

171.4

6 3/4

71.4

2 13/16

9150 or 9450

159.5

2.37:1

NC50-70(4 1/2 IF)

177.8

7

57.2

2 1/4

9150 or 9450

164.7

2.54:1

NC50-70(4 1/2 IF)

177.8

7

71.4

2 13-16

9150 or 9450

164.7

273:1

NC50-72(4 1/2 IF)

184.2

7 1/4

71.4

2 13/16

9150 or 9450

169.5

3.12-1

NC56-77

196.8

7 3/4

71.4

2 13/16

9150 or 9450

185.3

2.70:1

NC56-80

203.2

8

71.4

2 13/16

9150 or 9450

190.1

3.02:1

6 5/8 REG

209.6

8 1/4

71.4

2 13/16

9150 or 9450

195.7

2.93:1

NC61-90

228.6

9

71.4

2 13/16

9150 or 9450

212.7

3.17:1

7 5/8 REG

241.3

9 1/2

76.2

3

9150 or 9450

223.8

2.81:1

NC70-97

247.6

9 3/4

76.2

3

9150 or 9450

232.6

2.57:1

NC70-100

254

10

76.2

3

9150 or 9450

237.3

2.81:1

8 5/8 REG

279.4

11

76.2

3

9150 or 9450

266.7

2.84:1