Method of identifying gas, oil and water zones in a subsurface formation

Patent · Tue Jan 19 00:00:00 EST 1982

OSTI ID:5754644

Masse, L; Medlin, W L; Sexton, J H

A method is disclosed for logging a wellbore to identify oil, gas and water zones in a hydrocarbon-bearing formation. The formation is characterized by acoustic velocities which are maximum when saturated with oil, minimum when saturated with water and intermediate when saturated with gas. The formation is logged with a sonic logging system utilizing a frequency within the range of 0.1 to 10 khz and logged with a lithologic logging system to account for variations in lithology on the sonic log. Thereafter the sonic log is compared with the known acoustic velocity characteristic of the hydrocarbon-bearing formation to identify the oil, gas and water zones therein.

• Assignee: Mobil Corp
• Patent Number(s): US 4312049
• OSTI ID: 5754644
• Resource Relation: Patent File Date: Filed date 29 Oct 1979; Other Information: PAT-APPL-088888
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
15 GEOTHERMAL ENERGY
BOREHOLES
ACOUSTIC MONITORING
SONIC LOGGING
EXPLORATION
NATURAL GAS DEPOSITS
PETROLEUM DEPOSITS
QUALITATIVE CHEMICAL ANALYSIS
VELOCITY
WATER
WELL LOGGING
CAVITIES
CHEMICAL ANALYSIS
GEOLOGIC DEPOSITS
HYDROGEN COMPOUNDS
MINERAL RESOURCES
MONITORING
OXYGEN COMPOUNDS
RESOURCES
020200* - Petroleum- Reserves
Geology
& Exploration
030200 - Natural Gas- Reserves
Geology
& Exploration
150303 - Geothermal Exploration & Exploration Technology- Exploratory Drilling & Well Logging