4OTC 2013 No convencionales final .pdf
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Mexico’s potential and exploratory strategy of
unconventional plays (shale oil and gas)
Ing. J. Antonio Escalera Alcocer
OTC 2013, 6-9 May, Houston, Texas
The 2013-2017 PEMEX Business Plan establishes one
objective and five main strategies for Exploration
PEMEX Business Plan
Strategic Objectives of PEP
▪ The Plan consists of 15
strategic objectives and 49
Increase the reserves inventory
through new discoveries and
Increase the production of
1▪ Increase the level of oil
reserves booking in shallow
waters and onshore areas.
2▪ Accelerate the evaluation of
the Gulf of Mexico’s deep
3▪ Extend the exploration
opportunities’ portfolio in
non-associated wet gas areas.
4▪ Intensify the delineation
activity so as to accelerate
the development of proven
5▪ Intensify the evaluation of
the potential of both shale oil
Source: Plan de Negocios de Petróleos Mexicanos y Organismos Subsidiarios 2013-2017
Regional perspective of oil and gas shales in Mexico
Studies are based on the information of
Golfo de Mexico
Gulf of Mexico
Jurassic plays (La Casita and
Pimienta) from the Chihuahua, Sabinas,
Burgos and Tampico-Misantla basins are
equivalent to the producing Haynesville
Formation in the USA.
Lutitas del shale
Upper Cretaceous plays in the Chihuahua,
Sabinas, Burro Picachos and Burgos basins
in northeastern Mexico represent the
continuations of the productive Eagle Ford
Formation in southeastern USA.
1,000+ wells, as well as geological and
geophysical information generated in 75
years of Pemex exploration.
resources were estimated through the
integration of the results of regional
Update of shale oil/gas potential
In a first evaluation, resources were quantified with a
mean value of 297 Tcf (60 Bboe) primarily considering gas.
Gas and condensate
Continued data integration and interpretation has allowed
distinction of the expected hydrocarbon type, with an
estimated mean of technically recoverable resources of
60.2 Bboe, 53% corresponding to oil and the rest to dry
and wet gas.
PEP 2011, Tcf
* In the order of 60 Bboe
Gas = 141.5 Tcf
Oil = 31.9 Bb
The assessment methodology follows current
Presence of hydrocarbons
Example: Pimienta Formation (Tithonian)
Volumetric Assessment (petrophysical method):
Overlapping geological, geochemical and
conventional production element maps are
the basis for the definition of unconventional
plays and prospective areas.
Resources = A·T·Ф·So,g·RF/FVFo,g
A – Area
T– Average thickness
Ф – Porosity
So,g – Oil or gas saturation
RF– Recovery factor
FVF– Formation volume factor
(FVF Boi (oil); FVF Bgi (gas))
Oil and Gas Shales Exploration Project
Give certainty to the quantified
prospective resources, the hydrocarbon
type and appraise productivity in the
Área de las
Continue geological and geochemical
studies to increase the understanding of
unconventional petroleum systems.
Apply state-of-the-art technology
reduce uncertainty in these plays.
Preferential assessment of oil and wet
gas prone areas.
Project Exploration Oil and Gas Shales
Total area: 200,000 km2
Prospective area: ~120,000 km2
Available production facilities in TampicoMisantla, Burgos and Veracruz basins
In a 4-year horizon:
Drill 175 wells
Acquire ~10,000 km2 of 3D seismic
Invest ~3,000 million USD
PEMEX Exploration Stages for Shale oil/gas basins
Pemex has defined an exploration process to reduce uncertainty on the resource
estimation and has set the basis for commercial development, taking environmental
regulations and sustainability into account for the entire process.
Prospectivity, identification of
Geological characterization and
Shale plays studies
Well fracturing design for high
and shale levels
Drilling of pilot well
Results evaluation of
and fairway wells
Well data acquisition for geochemical and geomechanical properties
Multi-fracturing design efficiency
Well fracturing results monitoring and performance production
Sabinas – Burro-Picachos – Burgos provinces
Hydrocarbon type: dry gas, wet gas and oil.
Estimated technically recoverable resources in the Cretaceous
(Eagle Ford and Agua Nueva) and Jurassic (La Casita and
Pimienta) plays amount to 8.5 and 15.3 Bboe, respectively.
Producing Wells USA
Eagle Ford/Agua Nueva
Play Eagle Ford / Agua Nueva
Five wells have been drilled along the continuation of the
dry and wet gas trends from south Texas, with a 60%
commercial success and booking 51 million boe of 3P
In order to test the continuity of the wet gas trend, two
wells are in completion and two more will be drilled.
The Arbolero-1 well, proved the shale gas concept in La
Casita and Pimienta formations.
The Anhelido-1 well tested 35°API oil in the Pimienta and
the Nuncio-1 well will test the extension of this play to the
Reserves at Anhelido-1 and Arbolero-1 are estimated around
63 million bboe.
The Anhelido-1 well is the first producer of shale oil in Mexico
Initial production: 429 bpd of oil and 1.3 MMcfd of
Cumulative production: 23,000 barrels.
Estimated ultimate recovery: 250-500 (M) barrels.
45 Development wells are expected to be drilled in
a 20 km2 area.
Proved reserves (3 Wells)
probable reserves (12 Wells)
Possible ReserveE (30 Wells)
17 Hydraulic fractures were made in order to
improve the flow capacity and recovery
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