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MULTIPLE ACTIVATION BYPASS VALVE

TECHNICAL SUMMARY

Multiple activation bypass valve/Circulating Sub is a set of short sub which can be opened and closed for many times. It is generally installed in special BHA such as directional, speed-up, LWD and so on. It can open and close the bypass hole in time for special operation according to the requirements of downhole conditions, so as to enhance the applicability of special BHA, improve production efficiency and reduce well control risk.

SPECIFICATION

Size

In

4 3/4"

6 1/4"

6 1/2"

6 3/4"

8"

8 1/4"

9 1/2"

O.D.

mm

121

159

165

172

203

210

241

I.D.

mm

50.8

71.4

71.4

71.4

71.4

71.4

76.2

Drift

mm

30

30

30

30

38

38

38

Connect

  

NC38

NC46

NC50

NC50

6 5/8REG

6 5/8REG

7 5/8REG

Bypass O.D.

mm

28.2

28.2

28.2

28.2

34.35

34.35

34.35

Active Ball O.D.

mm

38.1

50.8

50.8

50.8

63.5

63.5

63.5

Active Ball

Qty

6

6

6

6

6

6

6

Lock Ball O.D.

mm

28.6

28.6

28.6

28.6

35

35

35

Lock Ball

Qty

6

6

6

6

6

6

6

Close Ball O.D.

mm

35

35

35

35

44.45

44.45

44.45

Close Ball

Qty

12

12

12

12

12

12

12

Working Times

  

6

6

6

6

6

6

6

OAL.

mm

2033

2586

2606

2586

2803

2803

2817

Weight

kg

124

292

308

358

514

564

791

Make Up Torque

KN-m

13.5

30.4

40.2

43.8

62.9

62.9

107.8

MULTIPLE ACTIVATION BYPASS VALVE

PRODUCTS

Drilling Motors
Stabilizers
Drill Collars
Drill Pipes
Drilling Jars
Fishing Tools
Drill Bits
Subs & Valves
Mud Pump Spare Parts
Bearings
Drilling Equipment
Hydraulic Agitator

ADVANTAGES

Multiple Activation Bypass System is a multi-cycle circulating tool in the Oil & Gas industry.  It help to solve a lot of drilling problems such as lost circulation and limited circulating rates. Also it helps to reduce the number of trips and limit non-productive time when circulating.

STRUCTURES

The multiple activation bypass valve is mainly composed of bypass sub, ball basket sub and switch ball group. A switch ball group comprises an active ball, two closed balls and a locking ball. The active ball and locking ball are made of a new type of engineering plastics, and the closing ball is made of standard bearing steel ball.

APPLICATION

1) High concentration and large particle plugging materials and squeezing cement plugging construction should be carried out without pulling out of BHA.
2) Other special construction pumped in by corrosive liquid.
3) Large displacement well flushing in directional well, horizontal well and highly deviated well.
4) Clean casing and BOP group.
5) Remove metal burr in time during window opening and milling operation.