Top-drive cementing heads(Mechanical)

Top-drive cementing heads(Mechanical)

Introduction
Top-drive cementing heads are cementing tools for offshore mobile platforms, offshore and onshore liner cementing. The release of rubber plug and setting ball enables the string to move up and down

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Description

Top-drive cementing heads(Mechanical)

Introduction
Top-drive cementing heads are cementing tools for offshore mobile platforms, offshore and onshore liner cementing. The release of rubber plug and setting ball enables the string to move up and down and rotate during cementing.

The Top-drive cementing heads is pre-loaded with the setting ball, drillpipe dart(s), or full-length wiper plugs(FLWPs) and can be racked in the derrick for easy access. The well can be circulated through the TDH via a top drive or cement unit with the ball and dart(s) loaded. When circulating through the side bore and/or bypassing dart(s), the maximum pump rate is 15 bbl/min. When pumping through the main bore, after plugs have been released and bypass valves are closed, the maximum allowable rate is 30 bbl/min. The ball and dart(s) can be released by the clearly identified wheels on the Top-drive cementing heads.

Feature:
1) Release the rubber plug at 90 degrees, easy to operate
2) Side disassembly and maintenance, easy maintenance
3) Two driving modes of handwheel and crowbar, convenient operation
4) Compact design, light weight.

Technical data:

Model	Rated loading (kN)	Working pressure (MPa)	Rated torque (kN.m)	Rated Speed (rpm)	Dimension	Weight (kg)
KW4500-70	4500	68.9	70	20	2.95×φ0.9	1350

Note: Designed as per safety factor of API SPEC 8C