Wells – Processes – Placing fluid into the formation
Reexamination Certificate
2011-04-26
2011-04-26
Bates, Zakiya W. (Department: 3676)
Wells
Processes
Placing fluid into the formation
C166S280200, C428S375000, C428S407000, C507S269000
Reexamination Certificate
active
07931089
ABSTRACT:
A proppant consists of a core part and shell of a material different from the material of the core part. The shell comprises a soft material attached rigidly to the core part in such a way that the total surface area of the points where the shell and the core part are joined is less than the surface area of the core part.
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patent: 6330916 (2001-12-01), Rickards et al.
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patent: 2006/0258546 (2006-11-01), Brannon et al.
Bulova Marina Nikolaevna
Medvedev Anatoly Vladimirovich
Miller Matthew J.
Willberg Dean M.
Bates Zakiya W.
Cate David
Griffin Jeff
Nava Robin
Schlumberger Technology Corporation
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