DRILLING AGENT

DRILLING AGENT

FIELD: oil and gas industry. ^ SUBSTANCE: invention is related to the field of oil and gas industry, namely, to drilling agents for opening of producing reservoir bed. Drilling agent contains following, wt %: biopolymer xanthan of brands "Saraksan-T" or "Saraksan" 0.2-0.7; alpha-...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: DERJABIN VLADIMIR VIKTOROVICH, KAZARJAN VALENTINA PETROVNA, KHUSAINOV NAIL' IL'GIZOVICH, KHVOSTOVA VERA JUR'EVNA
Format: Patent
Sprache:eng ; rus
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 industry. ^ SUBSTANCE: invention is related to the field of oil and gas industry, namely, to drilling agents for opening of producing reservoir bed. Drilling agent contains following, wt %: biopolymer xanthan of brands "Saraksan-T" or "Saraksan" 0.2-0.7; alpha-glucan 0.2-0.8; salt or mixture of salts of univalent metals 1-55; defoaming agent of brand "Sofeksil-9056-20x" 0.01-0.2; bactericide of brand biocide SMB 0.1-0.5; water - the rest. As alpha-glucan, modified starch or dextran is used. As salts of univalent metals, chlorides or nitrates, or nitrites, or thiosulfates, or carbonates, or acetates, or bromides, or sodium or potassium formates, or their mixtures are used. ^ EFFECT: preparation of drilling agent with adjusted density without solid phase for high quality opening of producing reservoir bed with the purpose of its initial permeability preservation. ^ 4 cl, 4 tbl, 4 ex