Abstract: A method is disclosed for analyzing an oil and gas production project with a computer system. Using a computer program, a user inputs characteristics of systems for the project and inputs characteristics of the expected production of the project, such as production life (years) and the production rate of the project. Based on the characteristics, the program generates a plurality of projected case profiles, each of which defines characteristics of the systems for a period of the production life of the project. A controlling case is then created using information from the plurality of case profiles. In the controlling case, each of the systems is analyzed to determine in which profile the system has the greatest cost, weight, area, or other criterion. From the analysis, characteristics of the systems are generated for the project that best meet the expected production over the entire production life of the project.

Abstract: Quantitative Risk Analysis (QRA) can be applied to provide a more realistic assessment of the risk associated with vessel accumulation due to common mode scenarios. The QRA process takes the results of a traditional flare study and QRA inputs such as the frequencies of the common mode scenarios and the layers of protection that will tend to reduce the severity of the common mode scenario, and generates an system risk profile, such as an accumulation versus frequency relationship for each vessel discharging to the relief header. This relationship provides an estimate of the overall risk associated with the relief header system. The QRA program makes the above analysis process possible by automating the generation, execution, and interpretation of the many possible permutations that are required to characterize the system.