new, 18-month evaluation of basin-scale oil and gas systems in the
Laguna Madre-Tuxpan area, located north of the Veracruz Basin, Mexico,
demonstrates that a variety of plays and exploration opportunities
exist in downdip areas in basin-floor and slope systems. Other areas
of the basin in major fault-bounded depocenters contain numerous three-way
fault-seal opportunities at many stratigraphic levels. Identification
and mapping of these plays will yield a structural and stratigraphic
framework for existing prospects and hold the promise of helping us
identify a spectrum of additional opportunities in the basin.
on graphic for larger view and description.
This study, conducted
by Bureau and PEMEX teams in Poza Rica and Tampico, will define major
Miocene and Pliocene plays in the offshore Gulf of Mexico between the
Veracruz and 90
Basins offshore to a water depth of 500 m. The study area covers six 3-D
surveys and intervening 2-D seismic lines and links the Veracruz and Burgos
Plays in the Laguna
Madre-Tuxpan study are defined from mappable geologic attributes. This
study uses a threefold definition for plays based on (1) sequence-stratigraphic
occurrence and age, (2) facies association, and (3) trap. Examples of
Laguna Madre-Tuxpan plays defined in this study are the Upper Miocene
Slope Channel/Levees and Upper Miocene Canyon, Stratigraphic Trap plays.
plays are structurally and stratigraphically complex, affording us a unique
opportunity to examine a complete coast-to-basin succession from valley
fill to basin floor over a distance of less than 25 km. A dynamic, tectonically
active setting, coupled with an abundant sediment supply, has resulted
in a greatly telescoped system. Narrow shelf margins in the Laguna Madre-Tuxpan
area represent an end member in the spectrum of shelf-margin types and
should be of significant worldwide interest.