| http://www.w3.org/ns/prov#value | - The sealing device 330b sealingly engages the seal surface 338b, and the sealing device 436 sealingly engages a seal surface 442 (for example, a polished seal bore, a packing stack or other seal, etc.) attached to a casing or liner 444 previously installed in the second well portion 274b.
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