Украинский научно-исследовательский институт природных газов
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Украинский научно-исследовательский институт природных газовfiledCriticalУкраинский научно-исследовательский институт природных газов
Priority to SU4673937/03ApriorityCriticalpatent/SU1829381A1/en
Application grantedgrantedCritical
Publication of SU1829381A1publicationCriticalpatent/SU1829381A1/en
Soil Conditioners And Soil-Stabilizing Materials
(AREA)
Abstract
FIELD: drilling of wells. SUBSTANCE: drilling mud comprises the following ingredients (wt %): 0.5-1.5 carboxymethyl cellulose; 0.1-1.0 acrylic polymer; 0.8-7.0 ferrochromolignosulfonate; 0.01-1.20 cement; and the water balance. The acrylic polymer may be polyacrylamide methane, reagent M-14, and cement is portland cement, mortar cement, gypsum-alumina cement and other types of cement irrespective of their purpose. A drilling mud is prepared mixing its ingredients, fast setting power of the drilling mud is reduced by decreasing the compressibility coefficient of the filtration cake. EFFECT: reduced fast setting power and reduced density of the drilling mud. 4 tbl
An aqueous spacer composition compatible with drilling muds and cement slurries including saline slurries and application thereof to drilling oil and gas wells