油气田产能建设投资与单井日产量最优经济评价研究

为保证油气田投资的效益，将经济评价方法和产能建设投资方法结合起来，建立经济评价模型、百万吨产能投资模型及单井日产量计算模型，再结合油气田开发的实际数据，应用模型计算结果，在考虑产量递减和含水率上升规律的前提下，研究百万吨产能投资大小与单井日产量、井深之间的关系。结果表明，在内部收益率一定的情况下，井深不变时，百万吨产能投资与单井日产量成反相关的关系；百万吨产能投资不变时，井深与单井日产量成正比。

Economic Assessment of Relations between Investment in Oilfield Productivity Construction and Daily Single-Well Output

To maximize returns of investment in oil and gas fields ,researchers established an economic as- sessment model,a 1Mt/a oilfield productivity investment model and a daily single-well output computing mod- el by combining economic assessment methods and productivity investment methods and using actual data from oil and gas field development and used the computing results from the models ,taking into account the regular patterns of progressive output decrease and water cut increase,to study the relations between the scale of investment in productivity construction investment and daily single-well output and well depth.The study shows that when the internal rate of returns and the well depth are fixed,the scale of investment in 1mt/a production capacity construction is inversely proportional to daily single-well output and when the scale of investment is fixed, the daily single-well output is proportional to well depth.