Earth boring – well treating – and oil field chemistry – Earth boring
Patent
1992-12-03
1994-05-17
Geist, Gary
Earth boring, well treating, and oil field chemistry
Earth boring
501149, 2523131, 2523155, C09K 700
Patent
active
053128079
ABSTRACT:
A method of treating a water-swellable clay after the clay has been mined and dried to improve its properties when in contact with salt-contaminated water. After the common initial drying of the clay to a moisture content of 12% by weight or less, the clay is rewetted to a moisture content of more than 12% by weight, preferably at least about 15% or more, based on the dry weight of the clay, then redried to a moisture content of 12% by weight or less, based on the dry weight of the clay. This rewetting and redrying processing of a dried clay unexpectedly improves the salt water absorbency, and viscosity properties when the clay is in contact with salt-contaminated water; unexpectedly increases the rheology properties of the clays for oil well drilling fluids and lost circulation fields when salt-contaminated water is encountered during drilling, as a suspending agent in the cosmetics and pharmaceutical industries when the composition contains a dissolved salt; and provides unexpectedly increased salt water-absorption in forming water-swellable clay-based water barriers.
REFERENCES:
patent: 1569251 (1926-01-01), Austin
patent: 2672442 (1954-03-01), Clem
patent: 2950983 (1960-08-01), Rowland
patent: 3150835 (1964-09-01), Horton
patent: 4422855 (1983-12-01), Sawyer, Jr.
Thorson, T A 34th Annu Wyoming Geol Ass Geol of the Bighorn Basin Field Conf (Billings, Mt., 83.09.17-21) pp. 167-170, 1983.
Gray et al, Composition and Properties of Oil Well Drilling Muds (Houston, Gulf Publishing Co., 1980) p. 540 TN 871.2 G695.
Grim, R. E. Applied Clay Mineralogy (New York, McGraw-Hill, 1962) pp. 204-229 TA 455 C55G7.
American Colloid Company
Geist Gary
LandOfFree
Method of improving absorption of salt water by water-swellable 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 of improving absorption of salt water by water-swellable , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of improving absorption of salt water by water-swellable will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-876811