METHOD OF WELL DRILLING WITH WELL WALL COLMATAGE Russian patent published in 2003 - IPC

Abstract RU 2215120 C2

FIELD: drilling of wells with its walls colmatage. SUBSTANCE: in realization of method, use is made of hydroacoustic drilling bit and drilling mud based on water. Drilling mud is preliminary mixed with reagent RDN-1 for oil recovery with ratio of 1:1. RDN-1 reagent contains, wt.%: heavy asphalt-resinous oil 50-70; nonionic surfactant 15-25; aromatic hydrocarbon solvent 15-25. EFFECT: improved lubricating, antiscuff and colmatage properties of drilling mud, higher wear resistance of equipment. 2 tbl

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RU 2 215 120 C2

Authors

Pozdnyshev G.N.

Manyrin V.N.

Gajsin R.F.

Lebedev V.A.

Dates

2003-10-27—Published

2001-10-31—Filed