Uncertain time to completion in a sequential investment problem: A theoretical analysis and an empirical application
针对石油项目开发阶段时长不确定的问题，构建实物期权模型，分析最优投资时机阈值，并用乌干达石油项目数据验证，发现油价特征对开发阈值影响更大，且预期完成时间短时可能延迟开发。
We develop a real options framework for a sequential oil project in which the oil company has to complete its development stage before it is able to start its production stage. Both the oil price and the duration of the development stage are uncertain. For each stage we determine the associated optimal price threshold that reflects an optimal investment timing. The goal of the article is to study the determination of these two thresholds. Because the oil price and the time to completion are uncertain, it is imperative to coordinate the thresholds in such a way that upon completion of the development stage it is sufficiently probable that the oil company can immediately start its production stage. Our numerical analysis is based on Uganda’s oil project in the Albertine Graben region. We show that changes in the characteristics of the oil price have a more pronounced effect on the development price threshold because it depends also on the production price threshold. Interestingly, we observe that it could be optimal for the oil company to start its initial development stage later in case of a shorter expected time to completion. This happens when it expects the oil price to grow relatively quickly.