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Shaanxi Senwell Drilling Equipment Co., Ltd
Jenny(General manager)
Tel:0086-29-85370919
Fax:0086-29-85370919
E-mail:Jennysaless@vip.163.com
                sales@oiltoolsdp.com
Website:Http://www.oiltoolsdp.com
 

Kelly Valve

Kelly Valve basic infomation

Catalog: Valves
Keywords: Kelly Valve
Tel: 0086-29-85370919
Fax: 0086-29-85370919
E-mail: Jennysaless@vip.163.com
Kelly Valve basic infomation

Kelly Valve

Kelly Cock Valve (Kelly valve/drill pipe safety valve), which is manually operated ball valve run in the I.D of drill string, is one of effective tools for prevent from blowout. The Kelly cock valve is divided into upper Kelly cock and lower Kelly cock. The upper Kelly cock is connected between lower end of swivel and upper end of Kelly. The lower Kelly cock is connected between upper end of drill pipe and lower end of Kelly or connected between lower end of Kelly saver subs. The Kelly cock features a simple operation, the Kelly cock can be opened on or closed off by only turning the special operating spanner at 90 degree according to indicating direction. During drilling operation, in order to avoid serious well kick or blowout accident, the Kelly cock shall be connected at upper end and lower end of Kelly.

The body of the Kelly cock valve is made of a single piece of forged AISI 4145H(40CrMnMo) modified alloy steel, fully heat treated to 285-341 Brinell hardness and 40 ft × Ib (54J) minimum impact strength. The main components and the inside of body are chrome-plated. The Kelly valve seals in both directions with metal to metal seals, available in 5,000psi (35Mpa)/10,000psi (70Mpa)/15,000psi (105Mpa) working pressure. The valve uses a hexagon socket on the operating stem and has positive stops in the open and closed positions.

 

Detail Specification:

 

Technical specifications and parameters for Upper Kelly valve

Type

O.D.(mm)

Connection (LH)

I.D.(mm)

Working pressure (Mpa)

U146

146

4 1/2 REG

57.2

35, 70, 105

U197

197

6 5/8 REG

76.2

35, 70, 105

U200

200

6 5/8 REG

76.2

35, 70, 105

 

Technical specifications and parameters for Lower Kelly valve

Type

O.D.(mm)

Connection (LH)

I.D.(mm)

Working pressure (Mpa)

L89

89

NC26

30

35, 70, 105

L111

111

NC31

40

35, 70, 105

L121

121

NC38

44.5

35, 70, 105

L127

127

NC38

44.5

35, 70, 105

L159

159

NC46

61

35, 70, 105

L168

168

NC50

71.4

35, 70, 105

L178

178

NC50, 5 1/2FH

71.4

35, 70, 105

Shaanxi Senwell Drilling Equipment Co.,Ltd    Jenny (General Manager)
Tel:0086-29-85370919     Fax:0086-29-85370919
Email:Jennysaless@vip.163.com     sales@oiltoolsdp.com
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