US 10,294,742 B2 · Borehole pressure management methods and systems with adaptive learning

Abstract

Various managed pressure drilling tools, systems, and methods are disclosed. An example method includes obtaining a model-based pressure prediction and sensor-based pressure measurements during borehole drilling operations. The method also includes determining a real-time learning calculation using the model-based pressure prediction and at least some of the sensor-based pressure measurements. The method also includes updating a formation pressure model based at least in part on the real-time learning calculation. The method also includes controlling annular pressure for the borehole drilling operations based on a pressure predicted by the updated formation pressure model.

Claims18

Dependent claims

A method of managing pressure in a borehole, the method comprising:

obtaining a model-based pressure prediction and sensor-based pressure measurements during operations in the borehole;
determining real-time learning calculations based at least in part on a difference between the model-based pressure prediction and real-time feedback from at least some of the sensor-based pressure measurements;
updating formation pore pressure, fracture pressure, shear failure pressure, and in-situ stress predictions based at least in part on the real-time learning calculations and on compaction trend data filtered by an adaptive learning module in real-time;
and
controlling flow rate, choke pressure, and drill rates in real-time for the operations based on the predictions.

2 more elements

Dependencies are inferred from the claim text.

Borehole pressure management methods and systems with adaptive learning

Life of this patent

Borehole pressure management methods and systems with adaptive learning

Life of this patent

Abstract

Claims18