Lost circulation material for sealing permeable formations

Details Lost circulation material for sealing permeable formations Lost circulation material for sealing permeable formations

1979-09-20

1981-09-15

Guynn, Herbert B.

Compositions

Leather or fur treating

175 72, 252 85M, C09K 702, C09K 706

Patent

active

042896320

ABSTRACT:
A composition of matter and a method of making is provided for preparing slurries to seal permeable earth formations encountered in the drilling of wells. The composition of matter comprises finely divided paper, diatomaceous earth, and in a further embodiment, lime. Slurries of the composition of matter can be prepared using fresh water or salt water to form a water-based lost circulation fluid, or using oil to form an oil-based lost circulation fluid. A slug of the slurry is spotted at the locus of the permeable formation and defluidized to form a formation seal on which a mud sheath is then deposited.

REFERENCES:
patent: 2064936 (1936-12-01), McQuiston
patent: 2119829 (1938-06-01), Parsons
patent: 2691629 (1954-10-01), Stoner
patent: 2739940 (1956-03-01), Barrett
patent: 3208523 (1965-09-01), Coyle et al.
patent: 3231399 (1966-01-01), Stookey
patent: 3253664 (1966-05-01), Sauber et al
patent: 3325403 (1967-06-01), Sauber et al.
patent: 3380542 (1968-04-01), Clear
Diaseal M Lost Circulation Material: Properties, Uses and Applications, Publication by Drilling Specialties Co., Bartlesville, OK.
Diaseal M Lost Circulation Material: Pattern for a Successful Squeeze, Publication by Drilling Specialties Co., Bartlesville, OK.
Diaseal M Lost Circulation Squeeze, Publication by Drilling Specialties Co., Bartlesville, OK.

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