Transient Modelling of Influx and Observer Implementation for Estimation While Drilling

Naveen Velmurugan (1) , Florent Di Meglio (1)

1 CAS - Centre Automatique et Systèmes

In this paper, we present a model of reservoir pressure dynamics in view of estimating influx during drilling. The distributed nature of the model is shown to have an important impact on the transient behaviour of pressure and flow rate when a liquid influx is present. Then, two observers, designed using a backstepping approach, are used to estimate the distributed reservoir pressure as well as wellbore states. The relevance of the approach is illustrated in simulations.

Domaines: Automatique / Robotique

Naveen Velmurugan, Florent Di Meglio. Transient Modelling of Influx and Observer Implementation for Estimation While Drilling. 2018 IEEE Conference on Decision and Control (CDC), Dec 2018, Miami Beach, United States. pp.2623-2628, ⟨10.1109/CDC.2018.8619526⟩. ⟨hal-02493310⟩