YIELDING OF HYDRATED LIME IN SET-DELAYED AND OTHER SETTABLE COMPOSITIONS.

摘要

Methods and systems directed to controlling the rheology of settable compositions in subterranean formations. Embodiments include a method of controlling the rheology of a set-delayed cement composition, the method comprising: providing a set-delayed cement composition comprising water, pumice, hydrated lime, and a set retarder; shearing the set-delayed cement composition in an amount sufficient to substantially prevent solids settling; storing the set-delayed cement in a pumpable fluid state for at least 1 day; activating the set-delayed cement composition; introducing the set-delayed cement composition into a subterranean formation; and allowing the set-delayed cement composition to set in the subterranean formation. Additional methods and systems are also provided. Methods and systems directed to controlling the rheology of settable compositions in subterranean formations. Embodiments include a method of controlling the rheology of a set-delayed cement composition, the method comprising: providing a set-delayed cement composition comprising water, pumice, hydrated lime, and a set retarder; shearing the set-delayed cement composition in an amount sufficient to substantially prevent solids settling; storing the set-delayed cement in a pumpable fluid state for at least 1 day; activating the set-delayed cement composition; introducing the set-delayed cement composition into a subterranean formation; and allowing the set-delayed cement composition to set in the subterranean formation. Additional methods and systems are also provided. Some demonstrative embodiments include apparatuses, systems and/or methods of wireless communication beamforming. For example, an apparatus may include a wireless communication unit to process a beamforming frame communicated between a beamforming initiator station and a beamforming responder station subsequent to a Transmit (Tx) sector sweep by the beamforming initiator station, wherein transmission of the beamforming frame is from a first station of the beamforming initiator station or the beamforming responder station to a second station of the beamforming initiator station or the beamforming responder station, the beamforming frame comprises an indication of a selected Tx sector, based on the Tx sector sweep, to be used by the first station for transmitting a directional beamformed transmission to the second station.