The Litho-Density tool calibration
Conference
·
· Soc. Pet. Eng. AIME, Pap.; (United States)
OSTI ID:5360944
The Litho-Density tool (LDT) uses a gamma ray source and two NaI scintillator detectors for borehole measurement of electron density, p/SUB e/, and a quantity, P/SUB e/, which is related to the photoelectric cross section at 60 keV and therefore to the lithology of the formation. An active stabilization system controls the gains of the two detectors which permits selective gamma-ray detection. Spectral analysis is performed in the near detector (2 energy windows) and in the detector farther away from the source (3 energy windows). This paper describes the results of laboratory measurements undertaken to define the basic tool response. The tool is shown to provide reliable measurements of formation density and lithology under a variety of environmental conditions.
- Research Organization:
- Schlumberger-Doll Research, Ridgefield, Connecticut
- OSTI ID:
- 5360944
- Report Number(s):
- CONF-8310121-
- Conference Information:
- Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Journal Volume: SPE12048
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
BENCH-SCALE EXPERIMENTS
BOREHOLES
CALIBRATION
CAVITIES
DETECTION
ELECTRON DENSITY
ELECTRON EMISSION
EMISSION
GAMMA DETECTION
GAMMA SOURCES
GAMMA-GAMMA LOGGING
LITHOLOGY
MEASURING INSTRUMENTS
NAI DETECTORS
NATURAL GAS WELLS
OIL WELLS
OPERATION
PHOTOELECTRIC EMISSION
RADIATION DETECTION
RADIATION DETECTORS
RADIATION SOURCES
RADIOACTIVITY LOGGING
RESERVOIR ROCK
SCINTILLATION COUNTERS
SOLID SCINTILLATION DETECTORS
SPECTRAL RESPONSE
WELL LOGGING
WELLS
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
BENCH-SCALE EXPERIMENTS
BOREHOLES
CALIBRATION
CAVITIES
DETECTION
ELECTRON DENSITY
ELECTRON EMISSION
EMISSION
GAMMA DETECTION
GAMMA SOURCES
GAMMA-GAMMA LOGGING
LITHOLOGY
MEASURING INSTRUMENTS
NAI DETECTORS
NATURAL GAS WELLS
OIL WELLS
OPERATION
PHOTOELECTRIC EMISSION
RADIATION DETECTION
RADIATION DETECTORS
RADIATION SOURCES
RADIOACTIVITY LOGGING
RESERVOIR ROCK
SCINTILLATION COUNTERS
SOLID SCINTILLATION DETECTORS
SPECTRAL RESPONSE
WELL LOGGING
WELLS