Recovery of gas from drilling fluid returns in underbalanced...

Details Recovery of gas from drilling fluid returns in underbalanced... Recovery of gas from drilling fluid returns in underbalanced...

E - Fixed Constructions

21

B

E21B 21/06 (2006.01) E21B 21/14 (2006.01) E21B 41/00 (2006.01) E21B 21/00 (2006.01)

Patent

CA 2188839

The drilling fluid returns from underbalanced drilling are introduced into a separator and a separate gas stream is recovered. The gas stream is cleaned at the well site to remove entrained liquid and particulate solids, to produce gas suitable to be fed to a compressor. The cleaned gas is compressed to re-injection pressure and recycled to the well.

Cette invention concerne une technique de récupération du gaz utilisé en forage en sous-pression, au moyen d'un séparateur. Le gaz récupéré est épuré au chantier de forage même pour le débarrasser du liquide et des particules solides entraînés et le rendre propre à réalimenter un compresseur. Le gaz épuré est comprimé à la pression de réinjection et réinjecté dans le puits.

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