Title: A Step-by-Step Approach to Improving Investment Decisions and Asset Valuation Real Options in Exploration
1A Step-by-Step Approach to Improving Investment
Decisions and Asset ValuationReal Options in
Exploration Production of Petroleum
Real Option Valuation? (ROV?) ConferenceMaximize
Return Minimize Risk in Strategic
InvestmentsNew Orleans, March 21, 2000
- By Marco Antônio Guimarães Dias
- Petrobras, Brazil
2Main Real Options and Examples
- Option to Delay (Timing Option)
- Wait, see, learn before invest
- Oilfield development Wildcat drilling
- Abandonment Option
- Managers are not obligated to continue a
business plan if it becomes unprofitable - Sequential appraisal program can be abandoned
earlier if information generated is not favorable
- Option to Expand the Production
- Depending of market scenario and the petroleum
reservoir behavior, new wells can be added to the
production system
3Options in Exploration Production (EP)
Oil/Gas Success Probability p
Expected Volume of Reserves B
Revised Volume B
Development Investment
4Types of Uncertainties in EP
- Exploration Production of petroleum is subject
to all types of uncertainties. For investment
decisions and valuation purposes, the main types
of uncertainty are - Technical Uncertainty about the existence, the
size, and the economic quality of the reserves. - EP technology in ultra deppwaters is another
example. - This uncertainty is solved by a step-by-step
investment sequential real options with option
to abandon - Economic/Market Uncertainty about prices and
costs - Oil prices oscillations are mean-reverting with
jumps? - Market volatility incentives to wait until the
project to become deep-in-the money optimal
exercise of the option - Strategic Uncertainty on the other firms
behavior - Option-Games drilling games (Dias, 1997) OPEC
games
5Deepwaters Technology Step-by-Step
- New discoveries of large petroleum reserves has
been finding in deepwaters and ultra-deepwaters - Deepwaters is the present and the future in oil
exploration - The conquest of deepwaters in offshore Brazil is
a good example of the step-by-step approach - In the 80s, diverless technology reaching 500
meters - In the 90s, diverless and guidelineless
technology reached 1,853 meters (6,079 ft)
(Roncador, 1999) - Petrobras and others are developing technology
for up 3,000 meters. Companhies with technology
have the option to enter in deepwaters prospects - The technology development for one deepwater
oilfield gives a real option to develop other
deepwaters oilfields - The technology valuation must consider the real
options that it creates, not only the immediate
application
6Deepwaters Technology A Success History
- Most of deepwaters world records occurred in
Campos Basin, Brazil
WATER DEPTH WORLD RECORDS1977 - 1999
7Technical Uncertainty
- Technical uncertainty decreases as the investment
in information is performed (step-by-step
approach). - Geological uncertainty is reduced by the
investment of the whole industry in a basin - The cone of uncertainty (Amram Kulatilaka)
can be adapted to the technical uncertainty
understanding
HigherRisk
Lower Risk
ExpectedValue
ExpectedValue
confidence interval
Lack of Knowledge Trunk of Cone
Project evaluation with additionalinformation(
t T)
Risk reduction by the investment in information
of all firms in the basin (driver is the
investment, not directly by the passage of time)
Current project evaluation (t0)
8Technical Uncertainty
- But in addition to the risk reduction process,
there is another important issue revelation of
the true value - The expected value after the investment in
information can be very different of the initial
estimative - Investment in information reveals good or bad news
t T
Value withgood revelation
Value withneutral revelation
Value withbad revelation
Current project evaluation (t0)
Investment in Information
Project valueafter investment
9Technical Uncertainty
- The number of possible scenarios to be revealed
is proportional to the cumulative investment in
information - Information can be costly (our investment) and/or
free, from the other firms investment
(free-rider)
- The arrival of information process leverage the
option value of a tract
10EP Process and Options
Oil/Gas Success Probability p
- Drill the wildcat (pioneer)? Wait? Extend?
- Revelation additional waiting incentives
Expected Volume of Reserves B
Revised Volume B
- Appraisal phase delineation of reserves
- Technical uncertainty sequential options
- Delineated but Undeveloped Reserves.
- Develop? Wait and See for better conditions?
Extend the option?
- Developed Reserves.
- Expand the production? Stop Temporally? Abandon?
11Valuation of Exploratory Prospect
- Suppose the case below how valuable is this
prospect? - Suppose that the firm has 5 years option to drill
the wildcat - Other firm wants to buy the rights of the tract.
Do you sell? How valuable is the prospect?
Compact Decision-Tree
12Valuation of Exploratory Prospect
- The traditional method looks only expected
values, forgetting that, in some scenarios (if
NPV lt 0), rational managers will not exercise the
option to develop the petroleum field. - Consider the following data to quantify prospect
value - Petroleum prices P 15.1 /bbl
- Economic quality of a developed reserve q 20
(so one barrel of developed reserve 0.20 x 15.1
3.02 /bbl) - Total value of the developed reserve V q.P.B
3.02 x B (where B is the number of barrels of
reserve) - Development cost (D) dividing in fixed (271
MM) plus variable term (1.1 /bbl of reserve),
hence D 271 (1.1 x B) - Using the expected value of reserve volume (B
150 MM bbl), the value of the prospect by the
traditional method is - Net Present Value (NPV) given a discovery NPV
V - D q.P.B - D ? NPV (3.02 x 150) - (271
1.1 x 150) ? NPV 17 MM US - But the chances to discovery petroleum is only of
20 and is necessary to drill the wildcat with
cost of E 20 MM. So - Expected Monetary Value EMV - 20 (20 x 17)
? EMV - 16.6 MM US (and the prospect is a
worthless asset)
13Prospect with Option to Develop
- Considering that rational managers will not
exercise the option to develop the petroleum
field if it is unprofitable, the prospect value
changes a lot. See the table below.
- Considering the option, the expected monetary
value (EMV) is EMV - 20 (20 x 100) ? EMV
0 - Hence, now we are indifferent to drill the
wildcat well.
14Prospect Valuation and Revelation
- The previous option analysis consider only
uncertainty in the reserve size and the option to
develop as a now-or-never option (option
expiring) - However is not a now-or-never option, it is a 5
years option - In 5 years we shall have many different scenarios
due both uncertainties, market (oil prices,
costs) and technical (geology) - Revelation of Geology with the time, the
exploratory activity of the whole industry in the
basin will reveal good or bad news about the
success probability, the productivity of reserve
(so, the economic quality of a reserve q), the
size of reserves, etc. - In 5 years several wildcats shall be drilled in
the same basin, revealing new values for success
chances, reserve productivity and volume, etc. - You can wait and see the revelation of
information (free information) - If you have an option (not an obligation), in 5
years the option will be exercised only if the
scenarios combination is favorable.
15Prospect Valuation under Uncertainty
- The table below present the probability
distributions at t 5 years for some uncertain
geologic parameters (revelation scenarios) and
for one uncertain market parameter (oil prices).
Parameter
Distribution
Values
Success Probability for the wildcat well
Minimum 10Most Likely 20Maximum 30
Economic Quality for the Developed Reserve
Multiplicative Factor for the Reserve Size
Distribution
Minimum 0.5Most Likely 1Maximum 1.5
Mean 15.1 US/bbl
Standard-Deviation 6
US/bbl
Oil Prices
16Exploratory Prospect Uncertainty
- Considering the uncertainties in oil prices,
economic quality of reserve, success probability
and reserve size. - Considering probabilistic distributions but
keeping the same expected values (assumptions at
t 5 y. not more optimistic) - Without considering the options, the expected
monetary value (EMV) _at_ t 5 years is negative as
before (- 16.6 MMUS)
17Exploratory Prospect and Revelation
- However, _at_ t 5 years you will exercise the
option only if the NPV is positive. So, the
unfavorable scenarios will be pruned (if NPV lt 0,
set value zero) - Options asymmetry leverage prospect valuation.
EMV 14.8
18Real Options Asymmetry and Valuation
Prospect Valuation Traditional Value - 16.6
Options Value 14.8
19Prospect Valuation under Uncertainty
- However, the value with revelation occurs in the
future, _at_ t 5 years. Discounting this EMV using
a discount rate 10 p.a., we get - Present Value of EMV PV(EMV) 9.19 MM
- There is a rent tax to retain the area of
concession, but this value is small for
exploratory blocks - Rental US 3,000/year PV(Rental) 0.01 MM
- Hence, the prospect value with revelation is
- Value 9.18 MM gt gt traditional value ( -16.6
MM) - In reality, the correct value is even higher,
because is possible that the option becomes
deep-in-the-money before 5 years - Depending on both market evolution and partial
revelation of geology, the option can be
exercised before t 5 years
20Prospect Valuation under Uncertainty
- Considering the option feature of real assets, we
get a very different result when comparing with
the traditional value. - Now is easy to see that higher uncertainty means
higher value if you have time and flexibility
(options) - Higher geologic uncertainty non-mature basins
- Higher revelation potential than mature basins
- But in the valuation we consider European option
(exercise only _at_ t 5 years). This is a lower
bound for the true option value. - Considering an American option (option can be
exercise earlier), this value is even higher - Correct PV(EMV) gt 9.18 MM
21EP Process and Options
Oil/Gas Success Probability p
- Drill the wildcat (pioneer)? Wait? Extend?
- Revelation additional waiting incentives
Expected Volume of Reserves B
Revised Volume B
- Appraisal phase delineation of reserves
- Technical uncertainty sequential options
- Delineated but Undeveloped Reserves.
- Develop? Wait and See for better conditions?
Extend the option?
- Developed Reserves.
- Expand the production? Stop Temporally? Abandon?
22Sequential Options (Dias, 1997)
Compact Decision-Tree
Note in million US
( Developed Reserves Value )
( Appraisal Investment 3 wells )
( Development Investment )
EMV - 15 20 x (400 - 50 - 300) ? EMV - 5
MM
( Wildcat Investment )
- Traditional method, looking only expected values,
undervaluate the prospect (EMV - 5 MM US) - There are sequential options, not sequential
obligations - There are uncertainties, not a single scenario.
23Sequential Options and Uncertainty
- Suppose that each appraisal well reveal 2
scenarios (good and bad news)
- development option will not be exercised by
rational managers
- option to continue the appraisal phase
will not be exercised by rational managers
24Option to Abandon the Project
- Assume it is a now or never option
- If we get continuous bad news, is better to stop
investment - Sequential options turns the EMV to a positive
value - The EMV gain is
- 3.25 - (- 5) 8.25 being
2.25 stopping development 6 stopping
appraisal 8.25 total EMV gain
(Values in millions)
25EP Process and Options
Oil/Gas Success Probability p
- Drill the pioneer? Wait? Extend?
- Revelation, option-game waiting incentives
Expected Volume of Reserves B
Revised Volume B
- Appraisal phase delineation of reserves
- Technical uncertainty sequential options
- Delineated but Undeveloped Reserves
- Develop? Wait and See for better conditions?
Extend the option?
- Developed Reserves.
- Expand the production? Stop Temporally? Abandon?
26The Extendible Maturity Feature
Period
Available Options
Develop Now or Wait and See
Develop Now or Extend (pay K) or Give-up
(Return to Government)
T I M E
Develop Now or Wait and See
Develop Now or Give-up (Return to Government)
27Extendible Options Dias Rocha (1998/9)
- Options with extendible maturities was studied
by Longstaff (1990) for financial applications - We (Dias Rocha, 1998/9) apply the extendible
options framework for petroleum concessions. - The extendible feature occurs in Brazil, Europe,
USA - Base case of 5 years plus 3 years by paying a fee
K (taxes and/or additional exploratory work). - Included into model benefit recovered from the
fee K - Part of the extension fee can be used as benefit
(reducing the development investment for the
second period, D2) - We consider both stochastic processes for oil
prices, the traditional geometric Brownian motion
and the more realistic mean-reversion process
with jumps
28Extendible Option Payoff at the First Expiration
- At the first expiration (T1), the firm can
develop the field, or extend the option, or
give-up/back to govern - For geometric Brownian motion, the payoff at T1
is
29Nominal Prices for Brent and Similar Oils
(1970-1999)
- We see oil prices jumps in both directions,
depending of the kind of abnormal news jumps-up
in 1973/4, 1978/9, 1990, 1999 and jumps-down in
1986, 1991, 1997
30Poisson-Gaussian Stochastic Process
- We adapt the Merton (1976) jump-diffusion idea
for the oil prices case, considering - Normal news cause only marginal adjustment in oil
prices, modeled with a continuous-time process - Abnormal rare news (war, OPEC surprises,...)
cause abnormal adjustment (jumps) in petroleum
prices, modeled with a discrete time Poisson
process - Differences between our model and Merton model
- Continuous time process mean-reversion instead
the geometric Brownian motion (more logic for oil
prices) - Uncertainty on the jumps size two truncated
normal distributions instead the lognormal
distribution - Extendible American option instead European
vanilla - Jumps can be systematic instead non-systematic
31C Software Interface The Main Window
- Software solves extendible options for 3
different stochastic processes and two methods
(dynamic programming and contingent claims)
32The Options and Payoffs for Both Periods
Options Charts
Period
T I M E
33Real Applications of this Model
- A similar stochastic process of mean-reversion
with jumps was used to equity design (US 200
millions) for the Project Finance of Marlim field
(deepwaters, Brazil) - The extendible options has been used to analyze
the development timing of some projects in Campos
Basin - The timing policy was object of a public debate
in Brazil, with oil companies wanting a higher
timing and this model gave some contribution to
this debate - We defended a longer timing policy compared with
the first version of the ANP (Brazilian national
petroleum agency) - In April/99, the notable economist and
ex-Minister Delfim Netto defended a timing policy
for petroleum sector citing our paper conclusions
about timing policies to support his view! (Folha
de São Paulo, a top Brazilian newspaper)
34EP Process and Options
Oil/Gas Success Probability p
- Drill the pioneer? Wait? Extend?
- Revelation, option-game waiting incentives
Expected Volume of Reserves B
Revised Volume B
- Appraisal phase delineation of reserves
- Technical uncertainty sequential options
- Delineated but Undeveloped Reserves.
- Develop? Wait and See for better conditions?
Extend the option?
- Developed Reserves.
- Expand the production? Stop Temporally? Abandon?
35Option to Expand the Production
- Analyzing a large ultra-deepwater project in
Campos Basin, we faced two problems - Remaining technical uncertainty of reservoirs is
still important. In this specific case, the
better way to solve the uncertainty is by looking
the production profile instead drilling
additional appraisal wells - In the preliminary development plan, some wells
presented both reservoir risk and small NPV. - Some wells with small positive NPV (not
deep-in-the-money) and others even with
negative NPV - Depending of the initial production information,
some wells can be not necessary - Solution leave these wells as optional wells
- Small investment to permit a future integration
of these wells, depending of the market evolution
and the production profile response
36Modelling the Option to Expand
- Define the quantity of wells deep-in-the-money
to start the basic investment in development - Define the maximum number of optional wells
- Define the timing (or the accumulated production)
that the reservoir information will be revealed - Define the scenarios (or distributions) of
marginal production of each optional well as
function of time. - Consider the depletion if we wait after learn
about reservoir - Simplify considering yearly distributions and
limiting the expiration of the option (declining
NPV due the depletion) - Add market uncertainty (reversion jumps for oil
prices) - Combine uncertainties using Monte Carlo
simulation - Use optimization method to consider the earlier
exercise of the option to drill the wells, and
calculate option value - Monte Carlo for American options is a frontier
research area
37Conclusions
- Real Options is the new paradigm for economic
analysis of assets, projects, and opportunities
under uncertainty. - Real options can be viewed as a NPV maximization
given the options and given the
uncertainties/stochastic processes - Need training, knowledge, and good computers
- Valuation of rights/projects using traditional
methods underestimates values, resulting on very
wrong values. - Implications for petroleum real assets
negotiations, bids, etc. - Implications for investment decisions and
portfolio selection - Firms need to develop simple and more complex
models. - Simple models are important for fast
calculations. - Interactive interface, charts, and educational
work. - Real world and specific issues demand also more
complex and taylor-made models in-house models - Firms need to follow the state of the art and the
growing literature