Field development and portfolio evaluation - · PDF fileField development and portfolio...
-
Upload
truongkien -
Category
Documents
-
view
225 -
download
5
Transcript of Field development and portfolio evaluation - · PDF fileField development and portfolio...
Field development and portfolio evaluation
2014-08-04 Classification: Open
How to achieve acreages?
• Discoveries from
exploration
• Buying at an open marked
2014-08-04 2 Classification: Open
3
Business
case 1
Business
case 4
Business
case 8
Business
case 10
Business
cases
Business
case 2 Business
case 3
Business
case 5
Business
case 6
Business
case 7
Business
case 9
Business
case 11
Corporate needs to have a “common process” to make the right choices
HQ
Corporate’s challenge – to select the best opportunities
Overview - Reservoir and Formation evaluation
Resources and reserves
Static information / Recourses (in place)
STOIIP = GRV * Porosity * So * N/G / Bo
Dynamic information / Reserves (producible)
Produced volumes = STOIIP * Recovery Factor
GRV = Gross Rock Volume
So = Oil saturation
N/G = Net out of Gross
volume
Bo = Formation volume
factor or shrinkage
factor
Dynamic parameters - equations
− Darcys law Q = -K A (Pb – Pa) / viscosity * L
− Production Index PI = QT/(PG – P)
• The productivity index (PI) takes into account the reservoir
characteristics at the inlet of the well, through the specification of a
relation between the inlet total flow rate QT, the well inlet pressure P and
the reservoir pressure PG. For a one phase oil well or for a two phase
gas-oil homogeneous mixture in the well, the relation is given by:
QT = PI(t) * (PG - P)
Governing documents
• Link to FR 01 - Exploration
http://docmap.statoil.no/DocMap/page/doc/dmDocIndex.html
• Link to FR 02 - Field development and IOR
http://docmap.statoil.no/DocMap/page/doc/dmDocIndex.html
LINK TO ARIS
8 - Classifi
cation:
Internal
(Restric
ted
Distribu
tion)
2010-
06-23
HSE
CSR
DRILLING
FACILITIES OPERATIONS SUBSURFACE
0
2000
4000
6000
8000
10000
12000
14000
16000
18000
20000
2023
2025
2027
2029
2031
2033
2035
2037
2039
2041
2043
2045
2047
2049
2051
Oil
pro
du
cti
on
rate
(S
m3/d
)
0
20
40
60
80
100
120
Cu
mu
lati
ve o
il p
ro
du
cti
on
(M
Sm
3)
PETECH <50 50-100 100-200 200-400 400-700
700-1000 ENPV NPVCircles in
mmUSD
100 1000
0.10
1.00
0.20
0.30
0.40
0.50
0.60
0.70
0.800.90
Recoverable Reserves in mmBOE
265
81
<50 50-100 100-200 200-400 400-700700-1000 ENPV NPV
Circles in
mmUSD
100 1000
0.10
1.00
0.20
0.30
0.40
0.50
0.60
0.70
0.800.90
Recoverable Reserves in mmBOE
265
81
100 1000
0.10
1.00
0.20
0.30
0.40
0.50
0.60
0.70
0.800.90
100 1000
0.10
1.00
0.20
0.30
0.40
0.50
0.60
0.70
0.800.90
100 1000
0.10
1.00
0.20
0.30
0.40
0.50
0.60
0.70
0.800.90
Recoverable Reserves in mmBOE
265
81
265
81
ECONOMICS
Technical evaluation and commercial analysis (in all DG processes). All the disciplines involved in an evaluation
Iterations
FACILITIES
9 -
Classificati
on: Internal
(Restricted
Distribution
) 2011-
08-30
Resourses and reserves
The Capital Value Process
The Capital Value Process (CVP) is our stage gate decision process for
investment
Operating model
Business
Development
(Idea to Deal)
Needs for Exploration projects passing DG0
2014-08-04 11 Classification: Open
Exploration projects passing DG0 shall demonstrate economic potential
for the discovery and that the in-place volume uncertainty has been
reduced to a level that it is not the main development risk.
The DG0 shall be approved by the receiving business area, based on
a recommendation from the Exploration business area. Required work leading up to DG0:
When appraisal is needed or warranted:
Conduct appraisal activities and evaluate results
Evaluate and QC volumes and remaining risks of the discovery. The volume estimates
shall be based on the expected discovered recoverable resources with associated
ranges (P90-P10) included, and the economics shall be calculated for this case
Identify and assess additional prospects and segments that may impact the
development concept.
For unconventional hydrocarbons this will mean additional subsurface potential in general
update the value of the business case
BUSINESS PLANNING (DG1)
2014-08-04 12 Classification: Open
The purpose of the business planning phase (leading up to DG1)
is to justify further development of the business case, and the
establishment of an investment project.
Feasibility studies shall demonstrate that one concept is
technically, commercially and organizationally feasible, and that
value chain fit, economic analysis and relevant stakeholder
analysis justify further development. The business planning phase shall:
Frame the business case, develop objectives and set direction
Document that the business case is in line with group strategies
Identify possible development stoppers
Demonstrate technical- and economic feasibility
Identify possible concepts and any added value opportunities
Identify the needs and potential for new technology
Identify schedule for regulatory applications
Align relevant stakeholders around further development
Establish the decision documents for DG1
CONCEPT PLANNING (DG2)
2014-08-04 13 Classification: Open
The purpose of the concept planning phase (leading up to
DG2) is to identify alternative concepts, select a viable
concept, define and document the selected concept and
develop Design basis for approval at DG2. A concept is described with the following main elements:
Commercial (e.g. legislation, agreements, licensing, financing, marketing and supply, product
sharing, taxes)
Reservoir or energy resource (e.g. depletion strategy, flow assurance)
Technical (e.g. drilling & well, facilities)
Operations (e.g. plant start-up, operation and maintenance)
The concept shall be selected based on defined criteria in due time prior to DG2.
The concept planning phase shall:
Provide a firm definition of the Design basis
Evaluate and compare alternative concepts
Screen-out non-viable options and mature the preferred concept to fulfill business case objectives
Develop basis for project execution (including identification of applicable permits or regulatory
approvals)
Align relevant stakeholders around further development
Establish the decision documents for DG2
DEFINITION (DG3)
2014-08-04 14 Classification: Open
The purpose of the definition phase (leading up to DG3) is to
further mature, define and document the business case based on
the selected concept for project sanction.
Any options or technical solutions not selected prior to DG2 shall
be decided prior to DG3. The definition phase shall:
Execute Front End Engineering Design (FEED) studies
Mature the business case to avoid late project changes
Plan and prepare the execution phase
Prepare submittal of application(s) to the authorities
Establish the basis for agreement (e.g. contract) awards
EXECUTION (DG4)
2014-08-04 15 Classification: Open
The purpose of the execution phase (leading
up to DG4) is to realize the business case. The execution phase shall:
Detail design, procure, construct (including install) and complete the agreed facilities and
wells
Perform handover to Asset / operations
Prepare for start-up, operation and maintenance
Establish Termination agreement
High exploration activity
• Brynhild well finalised August 2010
• Late 2010/ 2011:
− 4 planned exploration wells (Dougal, McHenry, Dr. No, Theta NE)
− 2 exploration extension wells
− Possible Beta Vest appraisal
• 2012, possible candidates
− Pinky/Dunkel, Olga, Fanten, Carmen*,
• 2013, possible candidates
− Langemann, Brynhild Sør, Slogen, Mju, Garm, Lambda N
McHenry
Dr.No
PL303 License
Dagny
Gudrun
Alfa sentral
Brynhild
Dougal
Theta NE
Volve N and
NW
Fanten
Olga
Slogen
Pinky/Dunkel
Langemann
Carmen
Brynhild Sør
Beta Vest appraisal
Zorn
Picasso
Mju
Lambda N
Value drivers
Are there any critical time drivers?
Do we understand the commercial issues?
Do we know the strategic issues?
Infrastructure
• Are there alternative tie-in hosts?
• Do we know the capacity in tie-in host?
• Weight and space available on the platform
• Fluid compatibility - quality
• Competition with other projects
• Commercial issues
• Unitization and redetermination
Project plan
• Manning (capacity, competence and project continuity)
• Time schedule
• Partner alignment
• Authority alignment / PDO
• Is there a need to apply for a deviation from governing
documents
Database
• Seismic quality and coverage
• Formation fluids
• Core samples (what is present and what is needed, and for
which purpose)
• Wells / Log information; available and needed
• Dynamic data available and needed
• Special studies, Mineralogy, SCAL, Rel/perm, biostrat,
geochemistry, LFP etc; available and / or needed
Producibility vs appraisal program
• Do we have analogue production experience?
• Are we fully aware of the drive mechanisms?
• Do we know enough to understand the mechanical strength
of the reservoir rocks?
• Is there a need to introduce unconventional methods, and
which consequences does that make?
• Do we have a «disposal» strategy? (cuttings, water, CO2)
• Etc.
Standard equipment / facility ???
“Claes Olsson” prospects and fields
Problematic HPHT fields (Technology and HSE elements)
Complicated flow assurance (Infra structure)
Need for heavy boosting (Facility robustness)
Well – cost / benefit discussions
• In case of only one well; Will it be a need for a more
comprehensive sampling program?
• Cores and or image-logs
• Dynamic test information (consider how long the test
needs to be)
• Planned side track(s)
• Overburden information (Vs og Vp, seal integrity, potential
for waste / deposal of produced water, CO2 and cuttings
• Evaluation of 4D potential (for reservoir monitoring)
Reservoir characterization and modelling
Regional/conseptual geological understanding?
Is there a need for a 3D model? If yes!
Testing of dynamic flow in reservoirs – contolling questions
• Why do we do dynamic fluid testing in wells?
• When should we plan for dynamic tests?
• What are the constrains we have to face, in doing good dynamic tests?
• What kind of testing tools and programs do we use?
• What can we read from dynamic tests and what are the pit faults?
• Where can I find raw data and interpretations of dynamic tests?
• Why is geology an important basis, for understanding test results?
• Who are the specialists and when should I contact one of them?
Presentation title
Presenters name
Presenters title
E-mail address ……@statoil.com
Tel: +4700000000 www.statoil.com
2014-08-04 30 Classification: Open