Electronic Crown Protector

Computer Controlled Crown Protection

Incorporating “Soft Stop”

a FIRMS® modular component

Related Products

lTraveling Block Controllerl Electronic Block Protector l Electronic Block Monitorl

Data Sheet - Letter
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Data Sheet - A4
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Electronic Crown Protector
  • MODULAR CONSTRUCTION Quick, simple, installation
  • BLOCK SPEED CONTROL Keeps block velocity versus position within safe operating parameters
  • PATENTED DESIGN U.S. Patent# 5,342,020
Derrick designs generally incorporate extra space at the crown area to allow for safer operation of the traveling block in an area that is hard for the driller to see, and also to allow for potential traveling block overrun of the upper mechanical stop caused by high block ascending speeds near the crown. Fitting portable top-drives to rigs reduces this extra space increasing the possibility of the traveling block impacting the crown. By installing the ECP, safe and accurate operation of the Traveling Block is maintained to the maximum upper block travel limit. The TBC eliminates the problem of overrunning the top stop by monitoring and controlling the blocks ascending velocity when the traveling block is being operated near the crown. This allows the traveling block’s upper travel limit to be safely moved closer to the crown, eliminating the necessity of adding extra derrick height.
SYSTEM OPERATION When the traveling block is ascending, the Electronic Crown Protector continually monitors block position and speed. Using this information, the system calculates the distance needed for the block to coast to a stop. If the traveling block’s ascending velocity, versus position toward the crown, is too great, the ECP reduces the block’s speed by reducing the signal to the driller’s foot throttle control. When the block has slowed to the desired speed, the signal to the foot throttle is returned. If the traveling block reaches the upper travel limit, the ECP sets the drawworks brake, stopping the traveling block. By providing a controlled slowing, or “Soft Stop”, of the traveling block as it approaches it’s upper travel limit, the problem of overrunning the top stop is eliminated. Similarly eliminated are the potential hazards normally associated with suddenly stopping a fast ascending, lightly loaded, traveling block.

Power: Nominal: 115/230VAC 50/60Hz 135 to 370VDC Brownout: 95 to 264VAC, 47 to 400HZ
Operating Temperature: -40°to+185°F(-40°to +85°C)

The ECP system does not require a purge system. The ecp can interface with the Innovative Electronics FIRMS® (Fully Integrated Rig Management System), the crown TV system, rig computer systems or logging computer systems, and can be programmed to provide anti-collision capability for the RBS, automatic pipe racker, or Iron Roughneck. An auto-drilling option is also available. The ECP can be supplied in various configurations depending on requirements. Systems are available with or without cables and/or junction boxes, for permanent installation or for moving from site to site. These components can be combined with other Innovative Electronics packages for complete consoles containing both hydraulic and electronic gauges and instruments.

Innovative Electronics

Innovative Electronics Innovative Electronics
P.O. Box 1367, Stafford, Texas, USA 77497
Voice (281) 240-7355 Fax (281) 240-7356


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