Seismic reflection applied to sedimentology and gas discovery in the Gulf of Cadiz

Journal Article · Mon Feb 01 04:00:00 EST 1982 · Geophys. Prospect.; (United States)

DOI:https://doi.org/10.1111/j.1365-2478.1982.tb00411.x· OSTI ID:6749864

Delaplanche, J; Lafet, Y; Sineriz, B G; Remon Gil, M A

In the Gulf of Cadiz, a Tertiary basin became filled by clastic series during Miocene and Pliocene times. This terrigenous influx, derived from the Iberic Meseta in the north, is characterized by a sandy episode during the Tortonian and Messinian. The sand deposits were probably connected with uplift and major erosion of the Meseta during the sliding of the olistostrome, which occupied the south of the basin from late Helvetian to middle Tortonian. High-resolution seismic techniques produced a good picture of the stratigraphy and of the depositional environment of the sands. A further study, using the amplitude of the reflections, inversion of seismic traces into acoustic impedance traces, and modeling, provides a remarkable example of the possibilities of seismic stratigraphy for depicting the lateral evolution of facies and localizing hydrocarbon occurrences. Out of seven exploratory wells based upon seismic information, six encountered gas-bearing sands with economic potential.

• Research Organization: Cie Gen de Geophys, Massy, France
• OSTI ID: 6749864
• Journal Information: Geophys. Prospect.; (United States), Journal Name: Geophys. Prospect.; (United States) Vol. 30:1; ISSN GPPRA
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030200* -- Natural Gas-- Reserves
Geology
& Exploration
58 GEOSCIENCES
580203 -- Geophysics-- Geophysical Survey Methods-- (1980-1989)
DATA ACQUISITION
EXPLORATION
GEOLOGIC DEPOSITS
GEOPHYSICAL SURVEYS
MINERAL RESOURCES
NATURAL GAS DEPOSITS
RESERVOIR ROCK
RESOURCES
SAND
SEISMIC SURVEYS
SURVEYS