Wells – Processes – Cementing – plugging or consolidating
Patent
1990-07-20
1991-08-13
Suchfield, George A.
Wells
Processes
Cementing, plugging or consolidating
166293, E21B 3314, E21B 3316
Patent
active
050388630
ABSTRACT:
A cement method and composition for cementing a well penetrating subterranean formations and aqueous based drilling fluid containing at least one cement retarder characterized by a major proportion of the drilling fluid from the well as it was drilled; water; a lesser proportion of dry cementitious material; a minor amount of a dispersant that does not effect satisfactory set cement within an acceptable time interval; and an accelerator selected from the class consisting of acetic acid; the first 4 carbon esters thereof; acetamide; monoethanolamine; and diethanolamine. The first 4 carbon esters are the methyl; ethyl; propyl; both normal and isopropyl; and butyl ester, normal, isobutyl and tertiary butyl.
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Bloys James B.
Bradshaw Roger D.
Wilson William N.
Altantic Richfield Company
Fails James C.
Mantooth Geoffrey A.
Suchfield George A.
Zobal Arthur F.
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