.... sustainable development Upstream Oil & Gas power plant energy subsidy social responsibility investment bottleneck Indonesia complex reservoir Energy Issue oil product electricity partnership requirement availability sustainability government saputra dependency infrastructure project...

... Abstract Oil companies use statistical decision-making techniques, like portfolio analysis, to make more informed decisions and estimate resource volumes more accurately. In general companies using these techniques are more successful. Probabilistic aggregation and dependency estimation...

... around a full model. This was achieved through smart model simplification, i.e. selected simplifications where these were expected not to hurt the results and surfacace and subsurface system dependencies. Based on a representative field model a 35x reduction in run time was achieved. At each stage...

... lead to a more diversified portfolio. Prices Abstract Traditional investment decisions in the oil and gas industries ignore dependencies and interactions between parameters such as reserves, production and economics. In a previous paper 1 we have shown that for a single project the system...

... is required. Proper accounting for dependencies among different risk factors is required, in order to evaluate the overall risk, the risked reserves distribution, and thus the economic value. The techniques can be extended to value a prospect portfolio, accounting for common or related risk elements...

..., correlation relationship between dependent reservoir parameters will be represented better and more exactly with non-linear regression models. The "box" method is introduced in this research as an improved technique in handling these more accurate non-linear regression models compared to conventional method...

..., at a given confidence level, is more correctly derived by probabilistic addition (PA) of the field UR's. As Probabilistic Addition requires the definition of the dependencies between the added elements, it is important that UR dependencies between fields are correctly estimated and incorporated...

... of reserves such that the proved reserves correctly have a 90% chance of being exceeded at the project level. The approach takes into account the known dependencies between some of the assets. The result is an auditable process that underpins the handling of subsurface dependencies within a single project...