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Company name: TianJin Shiruida Machinery Import & Export Co., Ltd

Main products: Petroleum machinery and Petroleum mechanical fittings

Business nature: Joint stock company

Tel: 0086.22.24716021  24716013   24716017 

Fax: 0086.22.24716023

Address: East15#,Chengfa Industrial zone,Xuelian South Road,Hedong District,Tianjin,China

Zip code:300185

Website: http://www.shiruida.cn       http://www.shiruida.com         

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               Integral heavy weight drill pipes

 

Integral heavy weight drill pipes


Integral heavy weight drill pipes are manufactured with AISI 4142H-4145H modified structural alloy steel, and the whole manufacture crafts are according to SY/T 5146-1997 standard. In a gradually developed intermediate weight, with a wall thickness between pipe and collar, the pipes are used as a kind of drill tool between pipe and collar with a gradual change of section plane to reduce drilling fatigue to prevent stress concentration at the top of the drill collars. It also allows you to drill at high speed with a reducing torture in case of different pressure sticking during directional well drilling works. Because of its relatively low steel strength, it reduces directional resisting and minimizes contact fatigue, both of which are common problems in large angle or horizontal drilling. The reduced number of pipe failures and increased drill pipe life also make it appropriate for some straight hole’s drilling.

 

Integral heavy weights drill pipes

Size

Outside dia.

Inside dia.

Connection

Bevel edge of oin and box shoulder DF mm

Body

Single weight

(Kg)

Mm

In

Mm

In

Model

Outside dia.

Upset section size

Mm

In

Central section DF Mm

End

Section B

Mm

TypeⅠ (The length is 9300mm)

ZJ-JZ55-51/2FH-I

139.7

51/2

92.1

35/8

51/2FH

177.8

7

170.7

152.4

144.5

730

ZH-JZ50-NC50- I

127.0

5

76.2

3

NC50(41/2IF)

165.1

61/2

154.0

139.7

130.2

700

ZH-JZ45-NC46- I

114.3

41/2

71.4

213/16

NC46(4IF)

158.8

61/4

145.3

127.0

117.5

585

ZH-JZ35-NC38- I

88.9

31/2

52.39

21/16

NC38

120.7

43/4

116.3

101.6

92.1

370

TypeⅡ(The length is 13500mm)

ZH-JZ50-NC50- Ⅱ

127.0

5

76.2

3

NC5041/2IF

165.1

61/2

154.0

139.7

130.2

945

ZH-JZ45-NC46- Ⅱ

114.3

41/2

71.4

213/16

NC464IF

158.8

61/4

145.3

127.0

117.5

790

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