The present invention relates to subterranean cementing operations and, more
particularly, to cement composition that include improved lost circulation materials,
and methods of using such cement compositions in subterranean formations. In certain
exemplary embodiments, the improved lost circulation materials include inelastic
particles of polyethylene, polystyrene and/or polypropylene. Optionally, the cement
compositions also may include additives such as fly ash, a surfactant, a dispersant,
a fluid loss control additive, a conventional lost circulation material, an generator,
a retarder, a salt, a mica, fiber, a formation-conditioning agent, fumed silica,
bentonite, expanding additives, microspheres, weighting materials, or a defoamer.
