US 2025/0146371 A1 · Improved Influx and Loss Detection for Managed Pressure Drilling Operations

Abstract

Disclosed embodiments relate to MPD well drilling methods, for example providing improved influx detection even in transient conditions. For example, the threshold for detecting influx may be adaptive, for example changing based on the quality of the data associated with one or more parameters of the drilling system. The adaptive threshold can then be used to detect and/or confirm influx, while taking into account possible transient conditions to minimize false alarms. In some embodiments, the method can compensate for any impact that drillstring movement may have on measured data. In some embodiments, the method can filter the data, for example to address issues arising from movement of a choke in the drilling system. Systems and devices related to such methods are also disclosed.

Claims20

Dependent claims

An MPD method for drilling a well using a drilling system, comprises:

drilling a wellbore, including circulating fluid through the wellbore during drilling;
monitoring, using one or more sensors, one or more parameters associated with drilling the wellbore selected from the following:
flow-in rate, flow-out rate, density, choke position, and drillstring velocity;
determining, using a processor, a threshold for detection of an influx and a detection sensitivity based on quality of data for the one or more parameters;
detecting, using the processor, a potential influx using the detection threshold;
confirming, using the processor, the detected influx using the detection sensitivity;
and responsive to confirming the detected influx, initiating an action in the drilling system.

4 more elements

Dependencies are inferred from the claim text.

Improved Influx and Loss Detection for Managed Pressure Drilling Operations

Life of this patent

Improved Influx and Loss Detection for Managed Pressure Drilling Operations

Life of this patent

Abstract

Claims20