Measuring and testing – Borehole or drilling – Downhole test
Reexamination Certificate
2005-12-06
2005-12-06
Chapman, John E. (Department: 2856)
Measuring and testing
Borehole or drilling
Downhole test
C073S152550, C166S255100, C175S040000
Reexamination Certificate
active
06971265
ABSTRACT:
A sensing apparatus is provided for use downhole, comprising a housing and sensing means with the housing containing a plurality of separable elements to which data acquired by the sensing means is transferred. The separable elements are releasable from the housing to convey the acquired data to surface. The separable elements have a spherical outer casing of around 1 to 10 cm diameter which surrounds a memory chip. The casing has a sealable aperture so that electrical connection to the chip can be established within the housing.
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The Corona Satellite. “The Major COmponents of the Corona Camera System”, http://www.nro.odci.gov/corona/sysinfo2.htm, pp. 1-3.
Sheppard Michael Charles
Zimmerman Thomas Harvey
Chapman John E.
DeStefanis Jody Lynn
Fayyaz Nashmiya
Gaudier Dale
Schlumberger Technology Corporation
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