Boring or penetrating the earth – Processes
Reexamination Certificate
2005-06-21
2005-06-21
Bagnell, David (Department: 3672)
Boring or penetrating the earth
Processes
C175S041000, C175S050000, C175S325500, C175S325100, C166S241600, C250S269300, C250S254000
Reexamination Certificate
active
06907944
ABSTRACT:
A tool is presented for making density measurements of a formation surrounding a wellbore, comprising a collar housing in a drill string. The housing has at least one first section with a first outer diameter, and at least one sensing section with a second outer diameter located proximate the at least one first section. The second outer diameter is smaller than the first outer diameter. A radioactive source is disposed in the sensing section of the housing. At least two detectors are disposed in the sensing section and spaced from the radioactive source and are positioned to detect radiation resulting from gamma rays emitted by the source.
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Grimmer Harald
Huiszoon Cornelis
Krueger Volker
Kurkoski Phillip Lawrence
Sale Matthew John
Bagnell David
Baker Hughes Incorporated
Bomar T. Shane
Madan Mossman & Sriram P.C.
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