METHOD OF PREPARING CLAY POWDER FOR DRILLING FLUIDS

METHOD OF PREPARING CLAY POWDER FOR DRILLING FLUIDS

FIELD: oil and gas production. SUBSTANCE: clay with moisture content at least 5% (95.2-95.8%) is ground on ball mill together with soda ash plus composition containing high-molecular acrylic polymer or high-viscosity polyanion cellulose and low-molecular polysaccharide-origin polymer at their ratio...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: RJABOKON' S.A, MOSIN V.A, RASTEGAEV B.A, PEN'KOV A.I, KOSHELEV V.N, VAKHRUSHEV L.P
Format: Patent
Sprache:eng
Schlagworte:
ADHESIVES
CHEMISTRY
DYES
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
POLISHES
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Beschreibung
Zusammenfassung:FIELD: oil and gas production. SUBSTANCE: clay with moisture content at least 5% (95.2-95.8%) is ground on ball mill together with soda ash plus composition containing high-molecular acrylic polymer or high-viscosity polyanion cellulose and low-molecular polysaccharide-origin polymer at their ratio 1: (1-2.5). Resultant product meets API standard for drilling fluids, i.e. yield at least 16 cu.m/g, filtration no higher than 15 cu.cm at pressure gradient 0.7 MPa. EFFECT: reduced preparation expenses. 9 tbl