Henan Shenlong Petroleum Drilling Tools Co.,Ltd

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Non Magnetic Stabilizer
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Kelly
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  product >> Kelly

kelly

We offer square and hexagonal kellys.Kellys are available up to 16 meters long.Our Kellys are made from AISI 4145H alloy bars that are quenched and tempered full length.A hardness range of 285 to 341 BHN and a minimum impact value of 54 Joules as per ASTM A 370 are maintained one inch bellow the surface at room temperature.To improve resistance to galling,all connections are phosphate-coated with an API thread compound.Each bar used to manufacture kellys has been examined with  magnetic particle inspections and ultrsonic inspections.

Square Kelly Drive Section 

1

2

3

4

5

6

7

8

9

10

11

Kelly    size

Length drive
section

Length Overall

Across   flats

Across   Corners

Across   Corners

Radius

Radius

Wall thickness eccentric bore

m

m

Standard

Optional

Standard

Optional

mm

mm

mm

mm

mm

mm

LD

LD

L

L

DFL

DC

DCC

RC

RCC

t

+0.152             -0.127

+0.152             -0.127

+0.152             0

+0.152             0    

 

 

0                       -0.4

±1.6

Ref.   only

min

63.5

11.28

12.19

63.5

83.3

82.55

7.9

41.3

11.43

76.2

11.28

12.19

76.2

100.0

98.42

9.5

49.2

11.43

88.9

11.28

12.19

88.9

115.1

112.70

12.7

56.4

11.43

108.0

11.28

15.54

12.19

16.46

108.0

141.3

139.70

12.7

69.8

12.06

133.4

11.28

15.54

12.19

16.46

133.3

175.4

171.45

15.9

85.7

15.88

                                                 Square Kelly end upsets and connections 

1

2

3

4

5

6

7

8

9

10

11

Kelly      size

Upper box connection

Lower pin connection

 

Label

Outside diameter

Bevel    diameter

Upset length

Label

Outside diameter

Inside diameter

Bevel diameter

Upset length

 

DU

DF

LU

 

DLR

d

DF

LL

±0.8

±0.4

+63.5                0

±0.8

+1.6                0

±0.4

+63.5                0

63.5

Standard

6 5/8REG

196.8

186.1

406.4

NC26

85.7

31.8

83.0

508.0

Optional

4 1/2REG

146.0

134.5

406.4

NC26

85.7

31.8

83.0

508.0

76.2

Standard

6 5/8REG

196.8

186.1

406.4

NC31

104.8

44.4

100.4

508.0

Optional

4 1/2REG

146.0

134.5

406.4

NC31

104.8

44.4

100.4

508.0

88.9

Standard

6 5/8REG

196.8

186.1

406.4

NC38

120.6

57.2

116.3

508.0

Optional

4 1/2REG

146.0

134.5

406.4

NC38

120.6

57.2

116.3

508.0

108.0

Standard

6 5/8REG

196.8

186.1

406.4

NC46

158.8

71.4

145.2

508.0

Standard

6 5/8REG

196.8

186.1

406.4

NC50

161.9

71.4

154.0

508.0

Optional

4 1/2REG

146.0

134.5

406.4

NC46

158.8

71.4

145.2

508.0

Optional

4 1/2REG

146.0

134.5

406.4

NC50

161.9

71.4

154.0

508.0

133.4

Standard

6 5/8REG

196.8

186.1

406.4

5 1/2FH

177.8

82.6

170.6

508.0

Standard

6 5/8REG

196.8

186.1

406.4

NC56

177.8

82.6

171.0

508.0

Hexagonal kelly drive section

1

2

3

4

5

6

7

8

9

10

11

Kelly    size

Length drive
section

Length Overall

Across   flats

Across   Corners

Across   Corners

Radius

Radius

Wall thickness eccentric bore

m

m

Standard

Optional

Standard

Optional

mm

mm

mm

mm

mm

mm

LD

LD

L

L

DFL

DC

DCC

RC

RCC

t

+0.152             -0.127

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