POLYMERIC DRILLING FLUID FOR EXPOSING PRODUCTION FORMATIONS

POLYMERIC DRILLING FLUID FOR EXPOSING PRODUCTION FORMATIONS

FIELD: oil and gas production. ^ SUBSTANCE: polymeric drilling fluid comprises, wt %: xanthane-type biopolymer 0.3-0.5, polyanion cellulose (Drispac) 0.4-0.7, inhibiting additive 3.0-7.0, carbonate whitening agent 5.0-12.0, modifier 0.5-1.5, bactericide 0.1-0.2, complex organic additive (additional...

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Bibliographische Detailangaben
Hauptverfasser: AKIMOV N.I, NAZAROVA A.K, MOROZOV S.JU, RUMJANTSEVA E.A, STRIZHNEV K.V, DJAGILEVA I.A
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 production. ^ SUBSTANCE: polymeric drilling fluid comprises, wt %: xanthane-type biopolymer 0.3-0.5, polyanion cellulose (Drispac) 0.4-0.7, inhibiting additive 3.0-7.0, carbonate whitening agent 5.0-12.0, modifier 0.5-1.5, bactericide 0.1-0.2, complex organic additive (additional component) 0.5-1.0, foam suppressor 0.02-0.05, and water - the rest, wherein modifier is potassium salt of anionic acryl amide copolymer (Thermopass TM 34) or polyvinyl alcohol. Drilling fluid is applicable when boring horizontal holes or offshoots under various hydrogeological conditions. ^ EFFECT: increased removing and retention capacities of drilling fluid and reduced into-formation filterability at the same principal working parameters under salt attack and elevated temperature conditions. ^ 3 tbl