C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 8/24 (2006.01) C09K 8/12 (2006.01) C09K 8/28 (2006.01) C09K 8/60 (2006.01)
Patent
CA 2656289
There is provided a wellbore fluid having a continuous aqueous phase, and comprising at least one polymer which: - has a molecular weight in the range of from 2,000 to less than 100,000; contains hydrophilic units such that the polymer is at least 2 % soluble in water at 20 °C, and such that less than 50 % by weight of said hydrophilic units comprise -CH2-CH2O- units; and contains pendant alkyl groups having at least 10 carbon atoms, the combined molecular weight of said pendant alkyl groups being in the range of from 15 to 70% by weight based on the weight of the polymer. Such aqueous based wellbore fluids exhibit significantly improved fluid loss properties when used in wellbore operations, such as drilling, completion or workover.
L'invention concerne un fluide de puits de forage ayant une phase aqueuse continue et comprenant au moins un polymère qui : a une masse moléculaire se situant dans la plage de 2 000 à moins de 100 000 ; contient des unités hydrophiles telles que le polymère est soluble à au moins 2 % dans l'eau à 20 °C, et telles que moins de 50 % en poids desdites unités hydrophiles comprennent des unités ~CH2-CH2O- ; et contient des groupes alkyle pendants ayant au moins 10 atomes de carbone, la masse moléculaire combinée desdits groupes alkyle pendants se situant dans la plage de 15 à 70 % en poids sur la base du poids du polymère. De tels fluides de puits de forage à base aqueuse présentent des propriétés de perte de fluide significativement améliorées lorsqu'ils sont utilisés dans des opérations de puits de forage, telles que le forage, la complétion ou le reconditionnement.
Duncum Simon Neil
Sawdon Christopher Alan
Bp Exploration Operating Company Limited
Fetherstonhaugh & Co.
LandOfFree
Wellbore fluid does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Wellbore fluid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wellbore fluid will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1509799