WEIGHTED DRILLING MUD

WEIGHTED DRILLING MUD

FIELD: oil and gas production. ^ SUBSTANCE: invention relates to drilling fluids used under complicated boring conditions, for instance when boring exploratory and productive holes under abnormally high pressure and temperature conditions. For these cases, weighted drilling mud contains, wt %: clay...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KURBANOV JA.M, OKSENOJD E.JA, LOGINOV JU.F, MAVLJUTOVA F.R, GURAK V.M, KHAKHAEV B.N, SUTJAGIN V.A, PEVZNER L.A, ZAJKOVSKAJA T.V
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: invention relates to drilling fluids used under complicated boring conditions, for instance when boring exploratory and productive holes under abnormally high pressure and temperature conditions. For these cases, weighted drilling mud contains, wt %: clay 5-10, stabilizing carboxymethylcellulose reagent 0.2-0.3, potassium chloride 3-5, potassium hydroxide 0.2-0.3. plasticizer 0.2-0.3, barite 30-65, lubricating additive 0.3-0.5. flocculant (unifloc or praestol) 0.001-0.004, and water - the balance. ^ EFFECT: improved quality due to lower filtration and improved rheological and structurally-mechanical properties of drilling mud. ^ 2 tbl, 3 ex