Working Principle
The drive head is based on the conventional drive head, the way of oil pipe is moved to one side of center line through off-center well, and the other side is kept as a channel to pass the testing instrument into the well.
Features
1.Tri-parameter testing instrument can successfully reach the target level.
2.The well head can be rotated to prevent the pulling rope of the instrument from reeling around the oil pipe; the tubing hanger is sealed well.
3.It has all features and functions of a conventional drive head.
4.The height of the whole structure is increased.
5.With the annular bypass port on the well head, it is easy to put the testing instrument in annular clearance through the well.
6.It is equipped with special valve that used to prevent blowout during well testing.
Specifications
|
Power |
5.5-55kw (Flame proof motor) |
|
Rated Load |
150KN |
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Diameter of polished rod |
φ22-42mm |
|
Rotary Speed |
65-250r/min |
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Type of Speed adjustment |
Exchanging belt pulley or variable frequency system |
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Pressure capability of Well seal |
0-6Mpa (Mechanical seal) |
|
Anti-counter rotating device |
Mechanical brake |
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Type of protections |
Over current protection, outlet pressure control (optional), soft start (option) |
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Type of Well Head connection |
7 1/16” flange (the customizing is available) |
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