Wells – Processes – Cementing – plugging or consolidating
Patent
1993-11-12
1994-08-23
Suchfield, George A.
Wells
Processes
Cementing, plugging or consolidating
106725, 106727, 106808, 106809, 523130, E21B 3313
Patent
active
053399030
ABSTRACT:
A method of cementing a wellbore which penetrates a subsurface gas-containing formation is provided whereby gas migration is reduced. The method features the use of an additive consisting of a tannin backbone having grafted thereto at least two different vinylamide derivatives. The additive causes the cement slurry employed in the method to exhibit a Zero Gel Time of greater than about one hour, a Transition Time of less than about one hour and controls fluid loss from the slurry.
REFERENCES:
patent: Re29595 (1978-03-01), Adams et al.
patent: 4296813 (1981-10-01), Detroit et al.
patent: 4579927 (1986-04-01), Patel et al.
patent: 4676317 (1987-06-01), Fry et al.
patent: 4703801 (1987-11-01), Fry et al.
patent: 5028271 (1991-07-01), Huddleston et al.
patent: 5099922 (1992-03-01), Ganguli
patent: 5134215 (1992-07-01), Huddleston et al.
patent: 5147964 (1992-09-01), Huddleston et al.
"The Relationship of Thickening Time, Gel Strength, and Compressive Strength of Oilwell Cements".
SPE Production Engineering, Mar. 1986, pp. 143-152.
The Condensed Chemical Dictionary, 7th Edition, 1969, pp. 917 and 1016.
The Merck Index, 9th Edition, 1981, pp. 1172 and 1173.
Eoff Larry S.
Loughridge Bill W.
Halliburton Company
Kent Robert A.
Suchfield George A.
Weaver Thomas R.
LandOfFree
Method for control of gas migration in well cementing 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 for control of gas migration in well cementing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for control of gas migration in well cementing will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-496566