US Patent Issued to SCHLUMBERGER TECHNOLOGY on June 3 for "Can-open master redundancy in PLC-based control system" (Texas Inventors)

ALEXANDRIA, Va., June 4 -- United States Patent no. 12,323,268, issued on June 3, was assigned to SCHLUMBERGER TECHNOLOGY Corp. (Sugar Land, Texas).

"Can-open master redundancy in PLC-based control system" was invented by Limin Chen (Cypress, Texas) and Vikas Rakhunde (Cypress, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system for controlling equipment at a wellsite includes a surface PLC, a first subsea PLC, a second subsea PLC, a first CAN module, a second CAN module, and a CAN network. The surface PLC is configured to receive a parameter that is measured by a sensor and to transmit a first signal to the first subsea PLC, the second subsea PLC, or both in response to the parameter. The first su...