Treatment of weighted drilling mud

Details Treatment of weighted drilling mud Treatment of weighted drilling mud

1974-10-11

1976-06-22

Purser, Ernest R.

Boring or penetrating the earth

Processes

Boring with specific fluid

175206, C09K 700, E21C 700

Patent

active

039645576

ABSTRACT:
Drilling mud having a high density capable of countering high pressures in formations penetrated by the borehole of a well is prepared by delivering a drilling mud having barite suspended in it into a cyclone separator at a rate which causes the pressure drop in the liquid as it passes through the cyclone separator to exceed 500 psi. A suspension of barite in drilling mud liquids is discharged as underflow from the cyclone separators. That suspension, which has a density in the range of 16 to 20 pounds per gallon, is either blended with a controlled amount of drilling mud liquids to produce a drilling mud of the desired density or pumped directly into the well to place a slug of very high density drilling mud in the well.

REFERENCES:
patent: 2886287 (1959-05-01), Croley
patent: 2919898 (1960-01-01), Marwil et al.
patent: 2923151 (1960-02-01), Engle et al.
patent: 2928546 (1960-03-01), Chruch
patent: 2941783 (1960-06-01), Stinson
patent: 2954871 (1960-10-01), Lummus et al.
patent: 3025965 (1962-03-01), Bergmann et al.
patent: 3289775 (1966-12-01), Stone
patent: 3558545 (1971-01-01), Lummus
patent: 3684038 (1972-08-01), Nelson
patent: 3713499 (1973-01-01), Arscott et al.
patent: 3737037 (1973-06-01), Bone

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