海外油气项目经济极限值测算

The Calculation of Economic Limit for Overseas Oil & Gas Exploration and Development Project

海外油气项目经济评价复杂,涉及的评价指标很多,关键指标包括"最小经济储量规模"和"单井经济界限"测算,海外油气项目中这两个指标与国内油气项目的测算方法和思路是不同的。在海外项目中,资源国获得的收益一般占到整个项目收益的60%～80%。海外油气勘探开发项目的经济极限值测算,必须研究项目的合同财税条款及相关因数,并根据合同财税条款编制经济评价模型,严格按经济评价模型进行测算,才能获得正确的、有价值的评价结果。探讨了海外油气勘探开发项目经济极限值的测算方法,举例分析了最小经济储量规模、单井经济界限值的计算方法。最小经济储量规模的测算应用贴现现金流法,根据具体项目的财税条款编制经济评价模型,结合项目的技术及经济参数进行测算;单井经济界限的测算,主要应用增量法,并举例说明单井初始日产量及经济可采储量的测算。

Economic evaluation for overseas oil gas exploration and development project is complex with many indexes.The key indexes are the calculation of minimum economic reserve and single well economic limit,whose method and ideas are different with that at home.In the overseas projects,the benefit of the host country of the resources is 60% to 80% of the whole benefit.When the economic limit of the overseas project is calculated,items and related factors of the finance and taxation in the contract should be researched,and economic limit model should be programmed based on the items.Then calculation should be made by the model so as to gain correct and valuable results.The calculation method of the economic limit of the overseas project is discussed,and the key indexes is calculated and analyzed through the examples.The calculation of minimum economic reserve applies the discounted cash flow method,that is to say,economic evaluation model is built according to the finance tax items for the calculation with the technical and economic parameters of the concrete project.The determination of single well economic limit applies the incremental analysis with the illustration of the calculation on initial daily production and economic recoverable reserve for single well.