Heavy Weight Drill Pipe (HWDP)
Heavy Weight Drill Pipe (HWDP)
Heavy Weight Drill Pipe (HWDP)
Heavy Weight Drill Pipe (HWDP)

Heavy Weight Drill Pipe (HWDP)

Heavy Weight Drill Pipe (HWDP) is an intermediate weight drill stem component that is used in conjunction with the drill pipes and drill l collars.  HWDP is available in standard, spiral, and nonmagnetic designs. In some applications, heavy-weight drill pipes also can be used instead of the drill collars.Our HWDP is made from one-piece AISI 4145H modified quenched and tempered steel. It is designed for tough drilling environments in vertical and directional wells. HWDP is a transition member between drill collar and drill pipe. For directional holes, HWDP provides weight on-bit and additional stiffness to prevent buckling.

  • Made of 4145H alloy structural steel.
  • Production complies with the provisions under the Standard SY/T 5146-1997. Connector screws comply with the provisions of the Standard API SPEC 7-1.
  • The tube section has a larger diameter at mid length to protect the heavy weight drill pipe from wear.
  • Hardbanding and Internal Coating can be provided on custom
Description
Technical Data
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Description

Specification:

Full Opening Safety valve

 

Size (in) O.D. (in) I.D.  (in) Tool Joint O.D. (in) Tool Joint I.D(in) Thread Max.elevator dia (in) Central upset dia.(in) Min.drift dia. (in)
3-1/2 3-1/2 2-1/4 4-3/4  (4-7/8, 5) 2-1/4 NC38 3-7/8 4 2
2-1/16 2-1/16 1-13/16
4 4 2-1/2 5-1/4 2-1/2 NC40 4-3/16 4-1/2 2-1/4
2-9/16 2-9/16 2-5/16
4-1/2 4-1/2 2-11/16 6-1/4 2-11/16 NC46 4-11/16 5 2-7/16
2-3/4 2-3/4 2-1/2
2-13/16 2-13/16 2-9/16
5 5 3 6-5/8 3 NC50 5-1/8 5-1/2 2-3/4
5-1/2 5-1/2 3-1/4 7  (7-1/4, 7-1/2) 3-1/4 5-1/2 FH 5-11/16 6 3
3-3/8 3-3/8 3-1/8
3-7/8 3-7/8 3-5/8
4 4 3-3/4
6-5/8 6-5/8 4 8  (8-1/4, 8-1/2) 4 6-5/8 FH 6-15/16 7-1/8 3-3/4
4-1/2 4-1/2 4-1/4
5 5 4-3/4
 Full Opening Safety valve5 
 
Full Opening Safety valve5

Drawing

drawing
 
Technical Data

Full Opening Safety valve (FOSv) is a ball-type safety valve used to stop flow through the drill string when the drill string is being withdrawn from the well. FOSv is a dual body full-opening safety valve, that does not interfere with the running of tools such as core barrels or survey instruments. It is designed to be stabbed into the top joint of drill pipe or tubing string at the rig floor and closed quickly in case a well kicks.

Full Opening Safety valve 

The ball-type design permits the valve to be compact, easy to handle, and have great strength. The standard test pressure is 10,000 psi, but higher-pressure ratings are available.

Specifications:

Full Opening Safety valve

Type Exradius OD Inch (mm) Inradius ID Inch (mm) Connecting thread API working pressure MPa
FOSV79 3-1/9 (79) 4/5 (20) 2-7/8HT PAC 35-70
FOSV89 3-1/2 (89) 1-3/16 (30) NC26
FOSV111 4-3/8 (111) 1-37/64 (40) NC31
FOSV121 4-3/4 (121) 1-31/32 (50) NC38
FOSV127 5 (127)
FOSV133 5-1/4 (133) 2-11/25 (62) NC40
FOSV159 6-1/4 (159) 2-4/5 (71) NC46
FOSV165 6-1/2 (165) 2-13/16 (71.4) NC50
FOSV168 6-5/8 (168)
FOSV190 7-1/2 (190) 3 (76.2) 5-1/2FH
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Drawing

drawing
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Heavy Weight Drill Pipe (HWDP)

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