Twelve Geological ProvincesWed, 01/25/2012 - 16:24
This province mainly produces non-associated gas. Source rock: part of Tithonian La Casita Formation. Hydrocarbons stored in structural traps in Late Jurassic and Early Cretaceous rock. Main fields: Monclova-Buena Suerte, Pirineo, Merced. Prospective resources: 0.3 billion Boe, 0.57% of total national resources.
Main producer of non-associated gas. Source rock: Tithonian clay-chalk and Paleogene shales. Hydrocarbons stored in anticlinal traps in interstratified Paleogene sandstone. Main fields: Reynosa, Monterrey, Cuitláhuac, Arcabuz, Culebra, Arcos, Pandura, Corindón. Prospective resources: 3.0 billion Boe, 5.92% of total national resources.
3. Plataforma de Yucatán
Includes continental platform and Yucatán peninsula, extending to Guatemala and Belize. Carboniferous source rock from Early-Middle Cretaceous Cobán Formation. Cretaceous carboniferous reservoir rocks. Subtle structural and stratigraphic traps. Production only in Guatemala and Belize. Prospective resources: 0.3 billion Boe, 0.57% of total national resources.
4. Deepwater Gulf of Mexico
Oil potential currently being evaluated. Main source rock: Tithonian clay limestone and shales. Hydrocarbons stored in Cretaceous limestone and Neogene sandstone in structural and combined traps. Main fields: Tamil, Noxal, Lakach, Lalail. Prospective resources: 29.5 billion Boe, 56.40% of total national resources.
5. Southeast Region
Mexico’s most important oil-producing basin. Main source rock: Tithonian clay. Hydrocarbons stored in Cretaceous carbonates, Late Jurassic carbonates and sandstone, Paleogene carbonated breccia and Neogene sandstone in structural and combined traps. Main fields: Cantarell, KMZ, J.A. Bermúdez, Jujo-Tecominoacán. Prospective Resources: 15.0 billion Boe, 31.96% of total national resources.
Mainly produces gas in Tertiary rocks, and some oil in Mesozoic rocks. Source rock: Tithonian clay limestone and shales, Middle Cretaceous limestone and Late Miocene shales. Hydrocarbons stored in Eocene and Miocene siliclastics and Middle-Late Cretaceous limestone in Neogene and Laramide structural traps. Main fields: Playuela, Lizamba (gas) and Cópite, Mata Pionche (oil). Prospective resources: 0.7 billion Boe, 1.33% of total national resources
This province mainly produces oil. Source rock: Early-Middle Jurassic carboniferous shales, Oxfordian, Kimmeridge and Tithonian clay mudstone and shales. Hydrocarbons stored in structural, stratigraphic and combined traps in limestone and sandstone from dierent geological periods. Main fields: Poza Rica, Arenque, Tamaulipas-Constituciones, Chicontepec. Prospective resources: 1.7 billion Boe, 3.25% of total national resources.
8. Cinturón Plegado Chiapas
Commercial production of oil and condensates. Source rock: Clay mudstone, Tithonian shales and Early-Middle Cretaceous carbonated-evaporite sequences. Hydrocarbons stored in Cretaceous limestone and dolomite rocks in structural traps. Discoveries in northern, central and eastern part of province. Current production in northern part.
9. Cinturón Plegado de la Sierra Madre Oriental
Most extensive network of folds and faults in Mexico. Late Jurassic source rock. Jurassic and Cretaceous siliclastic and carbonates reservoir rock in structural traps. No hydrocarbon discoveries so far. Medium-low potential.
Paleozoic, Tithonian, Aptian and Turonian source rock. Oil system at high risk due to high maturity of source rock. Paleozoic limestone and dolomite rocks and Jurassic and Cretaceous sandstone and limestone reservoir rock. Potential traps are structural. Medium-low potential.
11. Golfo de California
Proven existence of dry gas. Source rock: Miocene shales. Hydrocarbons stored in Miocene and Pliocene sandstones in combined traps. Only producing well is Extremeño-1. Medium-low potential. Resources are being evaluated.
12. Vizcainas-La Purísima-Iray
Forearc basin. Source rock: Cretaceous and Paleocene shales. Hydrocarbons stored in sandstones of Late Cretaceous Valley Formation. Mainly stratigraphic and combined traps in up-dip pinch-out sandstone.