| http://www.w3.org/ns/prov#value | - The assembly 298 includes a casing or liner 300, a valve 302 (for example, a valve of the type used in staged cementing operations), a packer 304 (for example, an ECP??? packer), a seal surface 306 (for example, a packing stack or other seal, a seal bore, a polished bore receptacle, etc.), a generally tubular member 308 having a window or aperture 310 formed through a sidewall portion thereof, and
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