METHOD FOR INHIBITING FERMENT-ASSISTED DECOMPOSITION OF POLYSACCHARIDES IN DRILLING FLUIDS Russian patent published in 1998 - IPC

Abstract RU 2109032 C1

FIELD: geology; drilling practice. SUBSTANCE: polysaccharide pretreaded with bactericidal additive, viz. polymerized dimethyl diallyl ammonium chloride monomer, water-soluble cationic-type polyelectrolyte, is added to drilling fluid in amount of 0.2-0.4 wt.-% based on volume of drilling fluid. EFFECT: reduced cost price of drilling fluid; easier adaptability to mass-scale production; increased rate of borehole driving per drill bit. 1 tbl

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RU 2 109 032 C1

Authors

Muslimov R.Kh.

Jusupov I.G.

Kateev R.I.

Sharafutdinov Z.Z.

Zubarev V.I.

Dates

1998-04-20—Published

1996-06-04—Filed