Cementing oil and gas wells

Details Cementing oil and gas wells Cementing oil and gas wells

1991-04-29

1991-12-31

Bell, Mark L.

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

106661, 106727, 106728, 106735, 507100, 507103, 507129, C04B 2400

Patent

active

050768522

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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