Drilling processes and fluid used in well drilling applications

Details Drilling processes and fluid used in well drilling applications Drilling processes and fluid used in well drilling applications

1995-05-04

1997-01-28

Springer, David B.

Earth boring, well treating, and oil field chemistry

Earth boring

Contains organic component

507224, 507225, 507117, 507119, 507216, C08L 3308, C09K 702

Patent

active

055977839

ABSTRACT:
A water-base fluid of optimized composition for solving problems encountered during operations such as drilling, completion or workover operations in a well crossing at least one permeable geologic formation contains (i) a hydrophilic/hydrophobic polymer, (ii) an acrylamide-base polymer of hydrophobic unit, (iii) a hydrophobically modified cellulose derivative, and (iv) a polysaccharide type polymer.
The fluid can be used in a process implemented in a well drilled through at least one formation having a given permeability and is for particular application to slim-hole and/or deviated drilling.

REFERENCES:
patent: 4529523 (1985-07-01), Landoll
patent: 4670501 (1987-02-01), Dymond et al.
patent: 5208216 (1993-05-01), Williamson et al.

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