Estimated Ultimate Recovery is the sum of Cumulative Production plus . HE) & Probabilistic (P90%, P50% &. P10%). – PR should be risked for probability of. P50 (and P90, Mean, Expected and P10) When probabilistic Monte Carlo type For example, if we decide to go for a probability of exceedance curve, when we. Cooper Energy Investor Series Cumulative Probability – P90, P50, P10 The terms P90, P50 and P10 are occasionally used by persons when.

Author: Nikus Mikajas
Country: Saint Lucia
Language: English (Spanish)
Genre: Business
Published (Last): 25 November 2007
Pages: 474
PDF File Size: 15.39 Mb
ePub File Size: 3.69 Mb
ISBN: 424-4-18865-978-2
Downloads: 64619
Price: Free* [*Free Regsitration Required]
Uploader: Muran

This matrix is required to be positive definite, i. If we then multiply all the input frequency distributions together a computer does this for us cumulatvie, the output, oil in place, ends up as a frequency distribution.

P50 (and P90, Mean, Expected and P10)

To generate a sequence of multi-variable correlated random numbers, we need progability specify the applicable matrix of correlation coefficients. We can do this exercise for every measureable thing and create a frequency distribution.

I remember a lecturer on renewable assets mentioning that a 1-year P50 value for energy output was very much different from a year P Pfobability, this distribution can be extremely useful when dealing with large samples.

Simulation results for the sample of Almeria Spain are presented in Table 4: Good explanation, I liked the approach. Cumulativr help you, you cant actually answer the question from the cumulative frequency distribution Figure 4 and you will need to jump from the cumulative frequency curve Figure 4 back to the frequency distribution Figure 1. Assuming a pass simulation run, results are processed as follows:.


P50 (and P90, Mean, Expected and P10)

For the cumulahive factor we can create a frequency distribution like all other input parameters. So in a normal distribution, the P50 value is more likely to occur than the P90 value. One will notice that you can start probzbility either the lower observation values to higher observation values or the opposite.

Notes Solargis weather data has been used for the calculations periodclimate database Solargis v2. While conceptually very simple, a trivial example provides the easiest route to developing an understanding of the Monte Carlo simulation procedure.

First, stratified sampling is used to force randomly generated numbers to conform to the cumulative distribution function represented by their statistical distribution. For further detailed reading investors should consult the Recoverable Hydrocarbon Guidelines on Cooper Energys website policies section. Uncertainty of energy simulation model. Multiplying the oil in place frequency distribution by the recovery factor frequency distribution we end up with a recoverable oil frequency distribution and then we can convert this to a cumulative frequency distribution and read off the P90, P50 and P10 estimates.

How to calculate P90 (or other Pxx) PV energy yield estimates

P50 level of confidence may represent too high risk for some investors. This also means that with at same probability the expectation may not be achieved.

Latin hypercube sampling also known as Stratified Probabiliyt is a process applied to multiple variables to reduce the number of required passes necessary in a Monte Carlo simulation. Risk Analysis is a technique to quantify the impact of these uncertainties on output variables, and to determine a range of possible outcomes, as opposed to a single deterministic solution.


Terminology Explained: P10, P50 and P90 – DNV GL – Software

The general uncertainty information is provided in Cuumlative data reports, and on request it can be more accurately specified with regard to the region of interest. Description and sample data files for each data type cukulative given below: An example of its use in the oil and gas industry is the estimation of potential lifecycle i. The log of a set of data that follows a log normal distribution follows a normal distribution.

The yearly P90 value cumulaive calculated as shown in Table 2. This is partially due to the speed and efficiency of energy simulation. Note that in the example above we only calculated the oil in place.

It can be calculated from the historical time series as a standard deviation of the series of annual values.

This is calculated by counting probabulity observations with a specific value and dividing by the total number of observations e. Whats the most important number P90, P50 or P10? P90 value represented in a normal distribution. If you understand a normal frequency distribution then thats all you need to know for the time being.

The argument for the mean works well for distributions that are symmetrical but if the distribution has a degree of skewness it might be better to reconsider and perhaps look at the P