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North West Group Geological SocietyCoal Bed Methane (CBM) in the North West–Past, Present and FutureBrent Cheshire (Executive Technical Director)Dr. Lloyd Boardman (Consulting Geologist)
Citation preview
North West Group Geological
Society
Coal Bed Methane (CBM) in the North
West – Past, Present and Future
Brent Cheshire (Executive Technical Director)
Dr. Lloyd Boardman (Consulting Geologist)
Certain statements included in this presentation contain forward-looking information
concerning IGas's strategy, operations, financial performance or condition, outlook, growth
opportunities or circumstances in the sectors or markets in which IGas operates. By their
nature, forward-looking statements involve uncertainty because they depend on future
circumstances, and relate to events, not all of which are within the Company's control or can be
produced by the company. Although the Company believes that the expectations reflected in
such forward-looking statements are reasonable, no assurance can be given that such
expectations will prove to have been correct. Actual results could differ materially from those
set out in the forward-looking statements. Northing in this presentation should be construed as
a profit forecast and no part of these results constitutes, or shall be taken to constitute, an
invitation or inducement to invest in IGas, and must not be relied upon in any way in connection
with any investment decision. Except as required by law, the Company undertakes no
obligation to update any forward-looking statement.
Unconventional Gas changing the landscape....
ExxonMobil farmed
awarded licences in
the Warsaw Trough
and Lublin Trough
ExxonMobil and
MOL farmed into
Falcon Energy’s tight
gas plays in the
Mako basin in
Hungary
Source: U.S.
Geological Survey,
2002 plus Barcap
company detail.
Locations are
approximate
Oil field centre
Gas field centre
Cambrian Alum Shale
Shell acquired two mineral exploration
licences in May 2008 in Skåne, valid for
three years
Silurian shale
Lane Energy farm-in:
Conoco Phillips funding
seismic
Cuadrilla have licences
(shale +tight gas) in North
England and in
Netherlands (Graben)
BNKP( south of
Lane); RAG has
farmed-in to its shale
acreage
Total E&P, UK Devon,
Mouvoil SA, Bridgeoil
Ltd., and Diamoco
Energy
Realm Energy (?)
Eurenergy
OMV have
researched Vienna
basin shale (4,500-
6,000m deep)Schuebach / Ascent
UK CBM
Island Gas + Nexen
Green Park + Marathon
Composite Energy + BG
RAG (?)
Independent
Resources have
drilled one failed
CBM well at Fiume
Bruna
CBM Energy have
completed one CBM
well
European Gas CMM
and CBM
Toreador (shale oil)
San Leon
Heritage Petroleum Plc and
Vancast Explotacion SL
rumoured to be seeking
shale in Northern Spain
(rumoured to be awaiting
permitting
Unconventional Gas changing the landscape....
UK
EU
Unconventional gas is changing the landscape…
“….we are transitioning from the oil century
to the gas century…”
“… the source is larger than the leaks…”
Aubrey McClendon
Chairman of the Board and CEO
Chesapeake Energy corporation
June 2010
An Overview of Activities in the North West
• CBM development cycle
• What is CBM
• Prior CBM experience
• Geology of the coals
• Site Selection & data
• Drilling Philosophy
Shale Resource
Extensive Shale resource
across acreage
Known to be hydrocarbon
bearing and significantly
anticipated to be in gas
window
Pressure regime un-known
IGas commissioned
independent study on
potential resource
IGas will seek to core
shale in-situ when possible
Production tests being
carried out by others
elsewhere in
Bowland/Holywell shale
E&P delivery - Acreage
Interests in licences range from 100% to 20%
Partner Nexen Inc.
Licences give rights to all hydrocarbons
PEDL 115-2
PEDL 092-1PEDL145PEDL 116
PEDL 115-1
PEDL 78-1
PEDL 78-2
PEDL 040-1
PEDL 056-1
PEDL 107
110/18, 19 &23
PEDL 184
PEDL 193
E&P delivery - Exploration – Building on success
• Extensive pre-existing data set of boreholes and seismic
• Data set corroborated by drilling of 8 wells covering all licence areas
• 320 boreholes used to substantiate resource calculations
• 890km of pre-existing 2d Seismic being re-interpreted at Point of Ayr
• Evaluating shale and conventional potential in all areas
∆ Pre-existing seismic coverage at Point of Ayr
E&P delivery - Appraisal
• Eight wells successfully drilled at seven sites to appraise resource
• Extensive coring and logging program completed
• All wells were drilled by Nexen
∆ Willoughbridge
∇ Doe Green
∆ Mostyn Quay
∇ Mill Farm
∆ Fox Hill Farm
∇ Fradley
E&P delivery - Production pilot
Doe Green
on test for
>1year,
"commercial"
flow rates
Keele
On test now,
dewatering.
PEDL 115-2
PEDL 092-1PEDL 116
PEDL 115-1
PEDL 78-1
PEDL 78-2
PEDL 040-1
PEDL 056-1
PEDL 107
110/18, 19 &23
PEDL 184
PEDL 193
Point of Ayr
On site by
year end to
production
test
E&P delivery - Full production
• Production start – Targeted for next year, from first full site
• Between 2011-2014 targeting 20-50 sites
• Each site planned to consist of 4-6 wells with 24,000 to 40,000 feet of
lateral in each well
• Each site is expected to produce between 7 and 20 Bcf over 15 years
(gross)
• Production from each site is expected to be peak at between 4 and 10
mmscfd (gross) (650 - 1,500 Boepd per site)
• Stable production curve (much flatter and longer than conventional)
• Production technology – known and demonstrated in other markets
E&P delivery - Surface access
Planning has been obtained for 13 sites to date from variety of land
owners and planning authorities
Land access:
• Peel Environmental agreement gives access to multiple sites in
core licences.
• More than 40 drilling locations identified
• Point of Ayr offshore
Planning:
• King Sturge retained to take multiple drill sites to planning
Water disposal:
• No issues to date because of quality and quantity
• Even local sewer disposal can be possible
Red areas show Peel land holding across
north west
E&P delivery - Market
• IGas operates in a high realisable gas price environment
• Direct access to many large customers
• No material pipeline infrastructure required, legal right to access both
low and high pressure gas networks
• 2011-2012 forward gas prices are ~$7.50mcf (~50p/therm)
• Pricing at National Balancing Point by discounting transportation
achievable
• Sales therefore can be direct or through Grid
Large industrial consumer
in area
What is Coal Bed Methane?
• CBM is the natural gas found in many
coal deposits
• It is used as a fuel in exactly the same
way as conventional gas
• Coal seams can hold large quantities
of gas (six to seven times more than the
equivalent volume of rock in a
conventional gas reservoir)
• Gas is stored within the molecular
structure of the coal, on the surface and
in natural fractures (cleats). Typically
water pressure keeps the gas trapped
• When the water pressure is released,
the gas flows through the fractures into
a well bore where it can be collected
What is Coal Bed Methane?
• CBM – Methane rich gas
• “Firedamp” in mining terms
• Typical composition:
• Methane 80-95%
• Ethane 0-8%
• Propane + 0-4%
• Nitrogen 2-8%
• CO2 0.2-6%
• Low porosity (0-3%)
Three Forms of Methane Extraction
• Coal Bed Methane (CBM)
•from virgin seams
• Coal Mine Methane (CMM)
• From prior workings/abandoned
mines
• Underground Coal Gasification (UCG)
• In situ combustion of virgin
seams
• IGas Energy is focussed on CBM only
Evergreen’s Sealand Wells
Sealand No.3
Evergreen’s Cronton Interactive CBM Wells
Stress, Fracture and
Bed Separation
associated with a
Longwall Panel
Geology of the Coals
Site Selection & Data
• Detailed lithological Log
from NCB Four Oaks
Borehole
Site Selection & Data
Site Selection & Data
• The British Coal (NCB) wireline logs used to locate wells
• Data acquisition is critical, particularly in the early appraisal
stages
• key data include logs, cores ( gas content, desorption
measurements etc)
Four Oak Gamma & Density
Log at Florida horizon
Litholog from recent CBM well
Site selection & Data
• Coal samples from numerous
boreholes enabled contour maps of coal
seam gas to be established
•
• detailed structural maps were
developed by integrating the down dip
exploration with the active coal mine
data
Site Selection & Data
• The abandoned mine plans
provide further data upon
which to select potential
sites.
• This plot shows an area of
working longwall panels that
are completely free from
faulting
• The relatively undisturbed
structure suggests a
promising site to locate
extended horizontal wells
may exist in the vicinity
Typical well Completion
• The well is drilled and lined with a
cemented steel casing – to provide
isolation from aquifers etc
• The casing is perforated in the target
coal seams
• Water and eventually methane gas are
produced through the tubing to surface
• Artificial lift technology is used to pump
the water/gas to surface (PCP’s, ESP’s,
Jet Pumps, Rod Pumps)
2800
2840
2880
2920
2960
3000
3040
3080
3120
3160
3000
3100
3200
3300
3400
3500
3600
3700
3800
3900
4000
4100
4200
4300
4400
4500
4600
4700
4800
4900
5000
5100
5200
5300
5400
5500
5600
Measured Depth (ft)
Tru
e V
ert
ical D
ep
th (
ft)
DG2 HF Perfs
DG2W
DG2Z
DG2V
DG2Y
Higher Florida Seam
- Initial well entry points
Vertical vs Horizontal Wells
• Successful CBM development is a function of
gas rate
• Historically, this required a high (vertical) well
density (see opposite)
• Such an approach is not viable in the UK
(environmental impact, land access etc)
• Alternative solutions have had to be found
• Horizontal or multi-lateral wells allow
comparable areas of coal to be accessed whilst
minimising the surface impact (as opposite)
• Commercial CBM production is attainable
through a combination of technology application
and innovative approaches to reduce the cost
base.
Doe Green: First Pilot
• IGas “test bed” to optimise CBM development
•
• On-site electricity generation since June 2009
• Optimising jet pump performance
• Increased production by 40%
• Planning Consent for 2 further wells applied for
Summary – Positioned for Delivery
• CBM represents a significant energy resource that can benefit the nation
• IGas Mid case sufficient to supply electricity to over 7% of all UK households for 15 years
• Pilot production ongoing with full scale commercial production targeted to start next year
• The North West region is at the forefront of CBM development in the UK
Delivering Secure Gas,
Onshore
Exploration and
appraisal2005-2009
Production pilots in
key areas2009-2011
Full
production
roll-out2011-2014
UK’s first production facility
Glossary
BCF Billion Cubic Feet
B.E Beneficial interest
BOE Barrels of Oil Equivalent
BOEPD Barrels of Oil Equivalent per day
CBM Coal Bed Methane
CPR Competent persons report
CSG Coal Seam Gas (CBM)
D&M DeGolyer and MacNaugton
DECC Department of Energy and Climate Change
EBIT Earnings before interest and tax
EBITDA Earnings before interest, tax, depreciation and amortisation
GIIP Gas initially in place
MMSCFD thousand standard cubic feet per day (measure of production)
PEDL Petroleum exploration and development licence
Scf/tonne Standard cubic feet per tonne
TCF Trillion Cubic Feet
WI Basis Working interest basis