Amplitude map analysis using forward modeling in sandstone and carbonate reservoirs

Journal Article · Fri Oct 01 00:00:00 EDT 1993 · Geophysics; (United States)

DOI:https://doi.org/10.1190/1.1443358· OSTI ID:5719737

Neff, D B ^[1]

---

1. Phillips Petroleum Co., Bartlesville, OK (United States)

The extent to which seismic amplitude maps can contribute to the analysis of hydrocarbon reservoirs was investigated for clastic and carbonate reservoirs worldwide. By using a petrophysical-based, forward modeling process called incremental pay thickness (IPT) modeling, five lithology types were quantitatively analyzed for the interplay of seismic amplitude versus lithology, porosity, hydrocarbon pore fluid saturation, bedding geometries, and reservoir thickness. The studies identified three common tuning curve shapes (concave, convex, and bilinear) that were primarily dependent upon the lithology model type and the average net porosity therein. While the reliability of pay and porosity predictions from amplitude maps varied for each model type, all analyses showed a limited thickness range for which amplitude data could successfully predict net porosity thickness or hydrocarbon pore volume. The investigation showed that systematic forward modeling is required before amplitude maps can be properly interpreted.

• OSTI ID: 5719737
• Journal Information: Geophysics; (United States), Vol. 58:10; ISSN 0016-8033
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
NATURAL GAS DEPOSITS
EXPLORATION
SEISMIC SURVEYS
PETROLEUM DEPOSITS
DATA ANALYSIS
AMPLITUDES
CARBONATE ROCKS
LITHOLOGY
MAPPING
MATHEMATICAL MODELS
PERMEABILITY
POROSITY
RESERVOIR ROCK
RESPONSE FUNCTIONS
THREE-DIMENSIONAL CALCULATIONS
WAVE PROPAGATION
FUNCTIONS
GEOLOGIC DEPOSITS
GEOLOGY
GEOPHYSICAL SURVEYS
MINERAL RESOURCES
PETROLOGY
RESOURCES
ROCKS
SEDIMENTARY ROCKS
SURVEYS
020200* - Petroleum- Reserves
Geology
& Exploration
030200 - Natural Gas- Reserves
Geology
& Exploration