C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 8/08 (2006.01) E21B 21/00 (2006.01)
Patent
CA 2377504
The invention relates to water based wellboe fluids used during a hydrocarbon recovery process, such as drilling, fracturing, gravel packing and wellbore workover. According to the present invention, said wellbore fluid comprises a fluid loss additive and a bridging material that are hydrophobic in nature, hydrophobically modified or oil wettable. The wellbore fluid generates an active filter cake that once formed, is impermeable to an aqueous phase, thus reducing fluid loss and enduring reduced damage to the formation, yet simultaneously is permeable to the back flow of hydrocarbons during a hydrocarbon recovery process.
L'invention concerne des fluides de forage à base d'eau utilisés au cours d'un processus de récupération d'hydrocarbures, tel que le forage, la fracturation, le gravillonnage des crépines ou le reconditionnement. Selon cette invention, ledit fluide de forage comprend un réducteur de filtrat et un matériau de colmatage qui sont intrinsèquement hydrophobes, modifiés de façon hydrophobe ou mouillables à l'huile. Le fluide de forage permet de produire un gâteau de filtration qui, une fois formé, est imperméable lors d'une phase aqueuse, ce qui permet de réduire les pertes de fluide ainsi que les dégâts causés à la formation. Ledit gâteau de filtration est néanmoins simultanément perméable au courant de retour des hydrocarbures au cours du processus de récupération d'hydrocarbures.
Bradbury Andrew
Brand Fabien J.
Finlayson & Singlehurst
M-I L.l.c.
Schlumberger Canada Limited
LandOfFree
Water based wellbore fluids does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Water based wellbore fluids, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Water based wellbore fluids will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-2044926