AUTOMATION OF SURFACE BACKPRESSURE USING FULL DRILLING SYSTEM PARAMETERS FOR PRESSURE CONTROL IN DOWNHOLE ENVIRONMENTS

摘要

The disclosure generally describes methods, software, and systems for automating parameters used in drilling operations. A computer-implemented method includes the following steps. Real-time information associated with fluid density, drilling operational parameters, and rheology is received from devices installed on site and downhole at a managed pressure drilling (MPD) operation. The real-time information is processed to ensure accuracy of the real-time information, and the real-time information is stored in a database. Real-time measurements of equivalent circulating density (ECD) are determined from the stored real-time information using modeling techniques. Hydraulic calculations are performed to determine annular pressure losses (APL). Surface backpressure (SBP) is determined in real time based on the APL. The MPD operation is automatically updated based on the determined SBP.