E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 37/08 (2006.01) E21B 33/068 (2006.01) E21B 37/00 (2006.01)
Patent
CA 2142304
An oil or gas well cleaning method includes insering tubing, such as a coiled tubing (60), into a well bore (10), for example, into a production pipe (30) in a well bore (10). A cleaning fluid containing a flocculant is passed into the well and the flocculant in the cleaning fluid is mixed with solid particles (11) in the well bore (10) to floc- culate the particles. The cleaning fluid and the flocculated particles are then removed from the well. In one embodiment, the cleaning fluid con- taining the flocculant is discharged from the lower end of the tubing (60) into the well, and the clean- ing fluid with the flocculated particles is removed from the well via the production pipe (30). Alter- natively, the cleaning fluid containing the floc- culant may be introduced into the well through the production pipe (30), and the cleaning fluid with the flocculated particles may be removed via the tubing (60). The flocculant may also serve as a friction reducer to reduce the friction between the cleaning fluid, the solids, the production pipe (30), and the tubing (60).
L'invention concerne un procédé de nettoyage de puits de pétrole ou de gaz par insertion d'un tube, tel qu'un tube enroulé (60), dans un puits de forage (10), par exemple, dans la colonne de production (30) de celui-ci (10). On introduit dans le puits un fluide de nettoyage contenant un floculant lequel se mélange à des particules solides (11) dans le puits de forage (10) pour les floculer. On évacue ensuite du puits le fluide de nettoyage et les particules floculées. Dans un mode de réalisation, on décharge dans le puits le fluide de nettoyage contenant le floculant par la partie inférieure du tube (60), et on évacue du puits ce fluide avec les particules floculées par la colonne de production (30). Alternativement, on peut introduire dans le puits le fluide de nettoyage contenant le floculant par la colonne de production (30), et on peut évacuer ce fluide avec les particules floculées par le tube (60). Le floculant peut également servir de réducteur de friction pour réduire celle-ci entre le fluide de nettoyage, les solides, la colonne de production (30) et le tube (60).
Hashemi Reza
Malbrel Christophe A.
Marks & Clerk
Pall Corporation
LandOfFree
Method and apparatus for oil or gas well cleaning does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for oil or gas well cleaning, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for oil or gas well cleaning will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1999050