Evaluation of highly deviated wells with gamma ray/electric logs and cased hole density/neutron logs

Conference · Wed Jan 01 00:00:00 EST 1975

OSTI ID:6743714

Haley, R A; Kirchoff, D L

Shell Oil Co. and Schlumberger Offshore Services propose their SARABAND computer analysis as an alternative method for evaluating the highly deviated offshore wells found in the Gulf of Mexico. A SARABAND evaluation of open-hole gamma-ray induction resistivity logs and cased-hole compensated density-neutron logs will find a typical commercial zone in a strongly deviated well. The error of oil in place at reservoir conditions is primarily dependent on the accuracy with which the cased-hole density log is shifted with trend and crossplot data. The SARABAND vaues of hydrocarbon density that pass the uncertainty test may be used to distinguish gas from oil, provided actual gas-oil densities meet specific requirements. Because some points in a well do not pass the uncertainty test, a wireline formation or production test will occasionally be necessary to identify hydrocarbon type.

• OSTI ID: 6743714
• Resource Relation: Conference: 50. annual fall meeting of the Society of Petroleum Engineers, Dallas, TX, USA, 28 Sep 1975; Related Information: SPE Paper 5512
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
GULF OF MEXICO
WELL DRILLING
NATURAL GAS WELLS
EVALUATION
OIL WELLS
BOREHOLES
COMPUTER CODES
ELECTRIC LOGGING
GAMMA LOGGING
NEUTRON LOGGING
S CODES
ATLANTIC OCEAN
CARIBBEAN SEA
CAVITIES
DRILLING
RADIOACTIVITY LOGGING
SEAS
SURFACE WATERS
WELL LOGGING
WELLS
020300* - Petroleum- Drilling & Production
030300 - Natural Gas- Drilling
Production
& Processing