Method using lost circulation material for sealing permeable for

Details Method using lost circulation material for sealing permeable for Method using lost circulation material for sealing permeable for

1981-06-29

1983-01-25

Novosad, Stephen J.

Wells

Processes

Cementing, plugging or consolidating

175 72, C09K 702, C09K 706, E21B 33138

Patent

active

043698441

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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