METHOD FOR FORMATION OF COLMATAGE LAYER IN WELL PERMEABLE WALLS Russian patent published in 1996 - IPC

Abstract RU 2070288 C1

FIELD: well drilling. SUBSTANCE: method for formation of colmatage layer in well permeable walls includes supply of grouting mortar with dispersed phase protected from hydration. Surface layer of dispersed phase is destroyed in the spot of well of hydraulic jet of 1.6-20 MPa. Time for contact of hydraulic jet with well wall is 0.01- 0.1 s with temperature variation within 18-350 C. EFFECT: higher efficiency. 2 tbl

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RU 2 070 288 C1

Authors

Poljakov V.N.

Ponjavin V.N.

Eremeev E.A.

Eremeev V.A.

Dates

1996-12-10—Published

1990-04-23—Filed