Methods and apparatus for safely measuring downhole conditions and formation characteristics while drilling a borehole

Patent · Tue Mar 21 00:00:00 EST 1989

OSTI ID:5953918

Wraight, P D; Marienbach, E; Hache, J M; Rhein-Knudsen, E; Evans, M

A logging apparatus is described, consisting of an upwardly opening passage in an upper portion of the tubular body for accommodating the lengthwise insertion and removal of an energy radiating source; a chamber in the interior of the tubular body and communicating with the passage for receiving an energy radiating source therein; an energy radiating source means comprising a source and source mount removably positioned in the chamber, the source means including means for removing the source, the removing means comprising an uppermost portion of the source means configured so as to be engagable by a source removing device; and a radiation detector disposed at a location spaced lengthwise from the chamber.

• Assignee: Schlumberger Technology Corp., Houston, TX
• Patent Number(s): US 4814609
• OSTI ID: 5953918
• Resource Relation: Patent File Date: Filed date 13 Mar 1987
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
MWD SYSTEMS
DESIGN
NATURAL GAS WELLS
OIL WELLS
OPERATION
POSITIONING
RADIATION SOURCES
WELLS
020300* - Petroleum- Drilling & Production
030200 - Natural Gas- Reserves
Geology
& Exploration