Cement compositions containing coarse barite, process for...

Details Cement compositions containing coarse barite, process for... Cement compositions containing coarse barite, process for...

2005-05-17

2005-05-17

Kreck, John (Department: 3673)

Wells

Processes

Cementing, plugging or consolidating

C166S285000, C106S816000, C106S461000

Reexamination Certificate

active

06892814

ABSTRACT:
Cement comprising barite, a process for preparing such cement, and methods of cementing in a subterranean formation or well bore using such cement are provided. The cement is prepared by introducing coarse barite to the cement, the course barite comprising particles having a particle size primarily greater than about 125 microns. Preferably, 90 percent of the barite particles is greater than about 125 microns in size. The presence of the coarse barite in the cement causes the cement to have a relatively low viscosity. Introducing the barite to the cement also increases the density of the cement, thus rendering the cement capable of controlling high hydrostatic pressures in a well bore.

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