Offshore Oil Rig Drawworks Brake Solution
Featured Product from Force Control Industries, Inc.
A high performance multipurpose bio-degradable traction lubricant circulates through a closed loop system that is continually filtered and temperature controlled. Cooling of this fluid can be accomplished either through “oil to air” or “oil to water” heat exchangers. All internal working parts of the brake are operating in clean lubricating fluid and not exposed to salt air or water. This eliminates contamination, corrosion, and mineral build up that can affect the braking operation.
The brake is an “dual purpose” brake. It will control the drop rate during tripping,, absorb the energy from stopping,, and enable stop and hold in position to make the next pipe connection.
The brake can slip at very low speed (down to 0 RPM) smoothly making it ideal for controlling WOB (the weight on the bit) without any chatter, stick slip or cogging during the drilling operation.
The brake control is a simple hydraulic pressure control on the brake actuation piston system through a servo valve. This system is ideal for control via an autodriller for precise bit control in all methods of drilling either WOB (weight on bit), CRP (Controlled Rate of Penetration), or simple manual control.
Oil Shear Technology provides a dynamic torque to static torque ratio nearly 1:1 eliminating the sharp jerk when transitioning between dynamic slip, and static lock up, reducing load on other transmission components, cabling, and top drive.
The brake can be designed as spring set causing the brake to engage in case of power failure reducing chance of damaged bit, or lost drill stem.
The Positorq Load Control auxiliary brake eliminates the need for the mechanical brake on the winch drum except as a standby backup for emergency stops.
The Positorq LCB (Load Control Brake) is generally much less weight than the Elmagco (Bayler) brake, and smaller in size. This reduces rig area and weight improving allotment for other items. The multiple disc friction stack design means more torque in a low inertia package. This relates to quicker response, less energy to be dissipated, and better control.