High temperature well cementing with low grade blast furnace sla

Details High temperature well cementing with low grade blast furnace sla High temperature well cementing with low grade blast furnace sla

1993-08-19

1995-01-10

Suchfield, George A.

Wells

Processes

Cementing, plugging or consolidating

106789, 175 65, E21B 2100, E21B 3314

Patent

active

053798406

ABSTRACT:
Drilling fluid is solidified by the incorporation therein of low grade blast furnace slag. In a preferred embodiment lime is also incorporated into said drilling fluid and/or said drilling fluid is a lime drilling fluid. Thus, there is provided a cementitious composition comprising drilling fluid, low grade blast furnace slag and, generally, lime. Also provided is a drilling and cementing process wherein a cementitious slurry comprising low grade blast furnace slag is introduced into a wellbore to cement a casing or liner.

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patent: 5106423 (1992-04-01), Clarke
"Conversion of Drilling Fluids to Cements with Blast Furnace Slag-Performance Properties and Applications for Well Cementing", SPE Paper 24, 575, Cowen et al., Oct. 4, 1992.
Javanmardi et al., "Mud to Cement Technology Proven in Offshore Drilling Project", Oil and Gas Journal, Feb. 15, 1993, pp. 49-57.

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