VRT535H

The VRT535H is a hydraulically powered Top Drive suitable for both portable and permanent applications. This system is a seamless combination of proven features, such as Driller's Panel control of all drilling functions and also control of pipehandler tasks. Every aspect of the system has been reworked to improve reliability, serviceability, and especially ease and speed of rig in and rig out.

Crew safety is a top priority in the design and development of these new systems. Patents have been filed on several new features, including a quill/load sub connection that is an order of magnitude more robust than everyone else's, and a back up wrench die holder that is able to sense and release the tool joint if someone inadvertently tries to hoist with the back up wrench. Premium materials and components have been used throughout the system to minimize downtime. Rineer hydraulic motors have been selected based on their outstanding robustness and reliability in the drilling environment.

Driller's Control

The Driller's Panel is an effortless joy to troubleshoot. Every panel element has built-in self diagnostics, and they are all connected with ribbon cable to ensure the elimination of loose connections. When all components are ok their indicator lights show green. When a component fails it shows red and can be replaced in about a minute. No more hours of frustrating multimeter adventures or waiting for an electrician! Another time-saving feature of the pipehandling system is adjustable elevator bails. Rather than having to change to longer bails and swap over link tilt mechanisms, all VRT Top Drives come with extendable bails.

Geared Hydraulic Drive 

Two Rineer double stack 250 cubic inch code 62 (5000 psi) motors, each driving its own pinion and the bull gear. The final reduction ratio was chosen by the peak torque that the topdrive will require using 250 cubic inch motors. Final configuration of the gearbox has been set. The gearbox specifications are as follows:  

Gear ratio 2.48 reduction

Material:

Pinion 9310 carburized

Bull Gear 8620 carburized

Life Expectancy >1 million hours

Hydraulic Power Unit 

Redundant electric motor pump drives

Topdrive can operate with either of the pump drives shut down for economy or maintenance.

Two AC induction motors, 700 hp at 1750 rpm

Two piggyback swashplate pump groups

Each group has a pair of 250 cc Sundstrand pumps

Each motor/pump group can produce 300 gpm

Total closed loop pump system can produce 600 gpm

The system is designed to maximize performance and minimize flow losses.

Features

Rated Hoisting Capacity: 535 Ton

Rated power: 1400 HP

Maximum Drilling torque: 45,000 lb-ft @105 rpm

Make-up Torque: 55,000 lb ft

Breakout Torque: 63,000 lb ft

Maximum Speed: 175 rpm

Weight: 19,500 lb

Water Course Diameter: 3”

Quill Connection: 6 5/8’

Circulating Pressure Rating: 5000 psi

Counterbalance Travel: 9 1/4 in

Pipehandler: All functions controlled from Driller’s Panel

Back up Wrench Capacity: 2 7/8” to 9 1/4 ” without adjustment

Back up Wrench Grip: Adjustable up to 240,000 lb

Back up Wrench travel

Optional extend feature available

Service loop: Designed for rapid installation and minimum interference