Surface gas evaluation during controlled pressure drilling

Details Surface gas evaluation during controlled pressure drilling Surface gas evaluation during controlled pressure drilling

E - Fixed Constructions

21

B

E21B 49/08 (2006.01)

Patent

CA 2742387

A system and method have a choke in fluid communication with a rotating control device. The choke controls flow of drilling mud from the rotating control device to a gas separator during a controlled pressure drilling operation, such as managed pressure drilling (MPD) or underbalanced drilling (UBD). A probe is in fluid communication with the drilling mud between the choke and the gas separator. During operations, the probe evaluates gas in the drilling mud from the well passing from the choke to the gas separator.

L'invention porte sur un système et sur un procédé qui comportent une duse en communication de fluide avec un dispositif de commande de rotation. La duse contrôle l'écoulement d'une boue de forage du dispositif de commande de rotation à un séparateur de gaz durant une opération de forage à pression contrôlée, telle qu'un forage à pression gérée (MPD) ou un forage sous-équilibré (UBD). Une sonde est en communication de fluide avec la boue de forage entre la duse et le séparateur de gaz. Durant les opérations, la sonde évalue le gaz dans la boue de forage à partir du puits en passant de la duse au séparateur de gaz.

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