Distributed control system

US6968905B2 · kind B2 · utility

Assignee

• SCHLUMBERGER TECHNOLOGY CORPORATION · US

Inventors

• Sarmad Adnan · Sugar Land, US
• Shunfeng Zheng · Katy, US
• Matthew Rouse · Missouri City, US
• Weibin Lu · Lo Wu, CN
• Kent C. Opel · Pearland, US

Key dates

• Filing date: Mar 18, 2003
• Grant date: Nov 29, 2005
• Expiry date: Jun 4, 2023

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B44/00
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A distributed control system for local or remote control of equipment. The distributed control system provides a communication bridge through a local control panel between a non-real-time network, and a real-time network, such as a controller area network. Both soft real-time and hard real-time networks are suitable, but hard real-time is preferred. Multiple distributed control units are used to control various equipment components. The distributed control system may be applied in any environment. The distributed control system may be applied to a skid-mounted coiled tubing unit.