Directional/complex wells

Machine Learning Aids Early Detection of Stuck Pipe in Extended-Reach Wells

The paper describes the experience of using a machine-learning model prepared by the ensemble method to prevent stuck-pipe events during well construction in extended-reach wells.

Typical scheme of downhole tools getting blocked by drilled cuttings or fallen rocks
Typical scheme of downhole tools getting blocked by drilled cuttings or fallen rocks

The objective of this paper is to describe the experience of using a machine-learning model prepared by the ensemble method to prevent stuck-pipe events during construction of extended-reach wells. The tasks performed include collecting, analyzing, and cleaning historical data; selecting and preparing a machine-learning model; and testing it on real-time data by means of a desktop application. The idea is to display the solution at the rig floor, allowing the driller to take actions quickly for prevention of stuck-pipe events.

Problem Analysis

Packoff is the blockage of the annular space with drilled cuttings or parts of rocks fallen from wellbore walls. In a packoff situation, circulation is severely limited or impossible.

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