Compositions and methods for maintaining zonal isolation in a subterranean well

摘要

Well cementing compositions comprise water, an inorganic cement and flexible particles having an average density higher than 1.5 g/cm3. The flexible particles may be elastomers. The flexible particles and cement particles may be present in a trimodal particle size distribution. The compositions may be placed in subterranean wells in the context of primary or remedial cementing.

主权项

1. A well cementing composition, comprising:
(i) water; (ii) inorganic cement particles; and (iii) flexible particles having an average density higher than 1.5 g/cm3.