ABSTRACT
Cements were first used in drilling when in 1903 a cement slurry was used to shut off downhole water just above an oil sand in the Lompoc field in California. Frank Hill of the Union Oil Company is credited with mixing and dumping a slurry consisting of fifty sacks of neat Portland cement. After 28 days, the cement was drilled from the hole and the oil sand was drilled through
to complete the well. The water zone had been effectively isolated. A. A. Perkins of the Perkins Cementing Company developed the origins of the modern well cementing process by employing a two-plug cementing method in 1910. The first plugs acted as wipers for mud on the casing. The second plugs came into play when cement was displaced from the pipe by steam by becoming stopped and thus causing a pressure increase which shut off the steam pump [1].
