Electricity: measuring and testing – Of geophysical surface or subsurface in situ – Using electrode arrays – circuits – structure – or supports
Reexamination Certificate
2007-11-27
2007-11-27
LeDynh, Bot (Department: 2862)
Electricity: measuring and testing
Of geophysical surface or subsurface in situ
Using electrode arrays, circuits, structure, or supports
C324S351000, C702S011000
Reexamination Certificate
active
11223883
ABSTRACT:
Logging-while-drilling apparatus and methodologies for measuring streaming potential in an earth formation are provided. The apparatus and methodologies can be utilized to find information relevant to the drilling operations. In particular, since the streaming potential measurement relates directly to fluid flow, the streaming potential measurements can be used to track flow of fluids in the formation. In turn, this information may be used to find information relevant to the drilling operations, such as under-balanced drilling conditions, abnormal formation pressures, open fractures, the permeability of the formation, and formation pressure.
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Chen Min-Yi
Clark Brian
Collins Anthony
Tarvin Jeffrey
DeStefanis Jody Lynn
Gordon David P.
LeDynh Bot
Loccisano Vincent
Schlumberger Technology Corporation
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