Burgos Basin Structural Framework & Production Trends

Integrated Geophysics Corporation
Structural Framework
Burgos Basin
Integrated Geophysics Corporation
ASSESSING THE POTENTIAL OF THE BURGOS BASIN
 Structural framework of the Super Burgos Basin
 Correlation to production trends:
 Tertiary Plays: Frio, Vicksburg & Wilcox
 Cretaceous Play: Eagle Ford (Agua Nuevo & San Felipe)
 Jurassic Play: La Casita (Pimienta)
 Distinctions between South Texas Basin & Mexican Burgos
Basin
 Current Shale Wells
 Basement structure & depths
 Why structure is important in the Burgos Basin
Integrated Geophysics Corporation
Reduced-to-Pole Magnetic Intensity
Northeastern Mexico
Coahuila State
Data Map
 Source: World Digital
Magnetic Anomaly
(WDMAM) grid file Sept
2007
Onshore area: 24,200sq mi.
South
Texas
Basin
 Grid: 1 kilometer data
grid
Southern extension of the
Maverick Basin Texas
Western extension of the
South Texas Basin
 Range: -186 to 413nT
 RTP: IGC calculation
Unfortunately, the regional
data control of the World Map
data allows only for a
qualitative analysis.
Integrated Geophysics Corporation
Reduced-to-Pole Magnetic Intensity
This aeromagnetic map
was selected to illustrate
complex relationship of
the sub-basins bounded
by significant structural
elements:
•mega-shears,
•basement structures
•surface geology
Super Burgos :
name coined for the area
bounded by the megashears.
Integrated Geophysics Corporation
Sub- Basins
Mexico’s Shale
Sub Basins
-appears to be of
good quality.
- a complex of related
sub-basins bounded
by the significant
structural elements.
- geologic
structure of the
sedimentary
basins are
considerably
more complex.
South
Texas
Basin
-South Texas &
Burgos are outlined as
the one sub-basin
within the Super
Burgos area.
- compared to US
Coastal gently
dipping shale
belts, Mexico’s
coastal shale
zone is narrower,
less continuous
and structurally
more disrupted.
-All other sub-basins
outlined lie within
Burgos Basin; all are
correlate to Border
Rift System.
Reduced-to-Pole Magnetic Intensity
Integrated Geophysics Corporation
Frio, Vicksburg and Wilcox Trends
Frio 1948 -Reynosa
Vicksburg 1945 - Mision
Wilcox 1959 -Penalva
East-Central Mexico Stratigraphy
Integrated Geophysics Corporation
Frio, Vicksburg and Wilcox Trends
Production
 Conventional
exploration started
1911
Tertiary Plays
generally described as
South
Texas
Basin
growth fault related
plays.
Tertiary sequence rocks have
a regional dip toward the east
and are affected by a serious
of major normal faults roughly
parallel to the coastline and
with displacement downward
to the Gulf Coast.
 Today - 3,500 active
natural gas wells
Source:
80% from
Upper Jurassic
(Tithonian) & Paleogene
Shales
Reduced-to-Pole Magnetic Intensity
Integrated Geophysics Corporation
Miocene & Tertiary Growth Fault Plays
Conventional Sandstone Reservoirs
20 distinct plays
E
B
Source: Echanove, 1986
Growth faults are the dominant trap
which includes anticlines, tilted blocks,
and sedimentary wedges on the
downside of the fault.
Source: Hernandez-Mendoza, 2008
Integrated Geophysics Corporation
Agua Nuevo (Eagle Ford) and La Casita (Haynesville) Trends
As of Sept 2013:
343 Tcf gas & 6.3bb
projected
Eagle Ford
Agua Nuevo (San Felipe)
Late 2010- 6 shale wells
Haynesville
La Casita (Pimienta)
March 2013 PEMEX
Anhelido-1 – 400b/d
of shale liquids
East-Central Mexico Stratigraphy
Integrated Geophysics Corporation
Aqua Nuevo –San Felipe
Shale plays - Cretaceous and
Upper Jurassic sequence contains
basinal, organic-rich and thermally
mature argillaceous rocks.
This includes the Aqua Nuevo and
La Casita including the Pimienta.
Anheldo-1
1st shale oil well
discovery:
La Casita formation
(dry gas)
March 2013
Reduced-to-Pole Magnetic Intensity
Integrated Geophysics Corporation
Production Summary
As of Sept 2013
Modest gas flows
(>3 million cft/day)
Wells exhibit steep declines
Well cost: $20-25 million
per well
PEMEX plans to drill 75
Burgos shale wells thru
2015 & increase production
to 2B cft/day by 2025
To-date 7 shale related wells have
been drilled:
Emergente
dry gas
4,071m
13,358ft
Percutor-1
dry gas
3,436m
11,270ft
Habano-1
gas/con
3,770m
12,366ft
Montanes-1
gas/con
3,200m
10,496ft
Nomada-1
---
2,850m
9,348ft
4,007m
13,143ft
Arbolero-1
dry gas
Anhelido-1
oil & gas
3,945m
12,940ft
Reduced-to-Pole Magnetic Intensity
Integrated Geophysics Corporation
Regional Cross-Section of Wells across the Six Basins
Note: the influence of the basement structure to the
success of deep Jurassic play: La Casita & Pimienta.
Integrated Geophysics Corporation
Fault Composite & Regional RTP
Megashear (Jurassic)
Megashears & Transforms
have influence the
generation of the depocenters for oil & gas
generation (sub-basins) &
therefore the prospective
area for shale exploration.
Discontinuities parallel to
the direction of Atlantic
opening.
Transforms (Cretaceous)
Northern Burgos Basin is
related to the South Texas
Basin.
These features are
recognized by:
- linear block boundaries
- block offsets
- fold offsets
- stratgraphic changes.
Southern Burgos Basin is
best described as the
Border Rift System.
Integrated Geophysics Corporation
Chittim Arch located in the Maverick Basin US
illustrates the structural complexity of the reservoir sands
Jurassic
Chittim Anticline is an interesting feature.
Located in center Maverick county – runs NW-SE for 30 miles (18km) & is 2 miles (1.2km) wide
Source: Ewing 2012
Good example of possible systems that underlie other folds in the Burgos Basin.
The surface structure reflects the fold cover over a deep half-graben complex
Similar structures can be identified with regional gravity & magnetic data.
Integrated Geophysics Corporation

Barrel of Oil Equivalent is high: 343 Tcf & 6.3bb gas & oil projected by
ARI June 2013.

Burgos Basin & South Texas Basin are related as bounded by Jurassic
mega tectonic shears



Basins have the same Miocene & Tertiary structures – regional normal faults
roughly parallel to the coastline and with displacement downward to the Gulf
Coast.
Basins differ in their deep structural configurations.
Structural framework of Burgos is complicated by close-spaced
Cretaceous transfer systems.


Aqua Nuevo (San Felipe) will be impacted by these K transfer faults; unlike the
US Eagle Ford.
Jurassic Play: La Casita (Pimienta) will be governed by rift geometries.
 Cross-trend structures, rift valleys, tilted blocks

Exploration strategy will have to be cost efficient & include state-of-theart technology and multiple data sources
Integrated Geophysics Corporation
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