气井水平段的最优经济价值长度确定方法

发布时间：2018-05-05 21:37

本文选题：水平井 + 天然气　；参考：《天然气工业》2014年12期

【摘要】：目前从经济价值角度对水平井水平段最优长度确定方法的研究相对较少,而以往多从单一的技术角度分析水平井段的最优长度。为此,从技术与经济相结合的角度出发,通过分析水平井开发生命周期内的天然气产量、成本费用、经济效益随水平井段长度的变化,建立了气井水平段最优经济价值长度的确定新方法。研究思路:1根据水平气井二项式产能方程,结合采气曲线法,确定气井在不同水平井段长度条件下的合理产量;2进而利用数值模拟方法,计算不同水平井段长度的气井在开发生命周期内的产量变化;3利用水平井气产量的研究结果,考虑资金的时间价值,分析水平井天然气开发的投入与产出随水平井段长度的变化;4以财务净现值作为水平井天然气开发经济效益评价指标,通过财务净现值与水平井段长度的关系曲线,确定气井水平段最优经济价值长度。最后,采用实例计算证实了气井水平段最优经济价值长度的存在,并讨论了地层系数、天然气价格、经营成本等因素对水平段最优经济价值长度的影响。
[Abstract]:At present, there are few researches on how to determine the optimal length of horizontal section from the angle of economic value, but in the past, the optimal length of horizontal section was analyzed from a single technical point of view. Therefore, from the point of view of combining technology and economy, by analyzing the variation of natural gas production, cost and economic benefit with the length of horizontal well development life cycle, A new method for determining the optimal economic value length of horizontal section of gas well is established. According to the binomial productivity equation of horizontal gas wells and the method of gas recovery curve, the rational production rate of gas wells in different horizontal section lengths is determined by using numerical simulation method. To calculate the variation of gas production in the development life cycle of gas wells with different horizontal section length. 3. Using the research results of horizontal well gas production, considering the time value of funds, This paper analyzes the variation of input and output of natural gas development in horizontal wells with the length of horizontal well. The financial net present value (NPV) is taken as the evaluation index of economic benefit of natural gas development in horizontal wells. The relationship curve between NPV and the length of horizontal well is analyzed. Determine the optimal economic value length of horizontal section of gas well. Finally, the existence of optimal economic value length in horizontal section of gas well is confirmed by practical calculation, and the influence of formation coefficient, natural gas price and operating cost on the optimal economic value length of horizontal section is discussed.
【作者单位】：中国石油西南油气田公司天然气经济研究所博士后工作站;中国石油西南油气田公司;"油气藏地质及开发工程"国家重点实验室·西南石油大学;
【分类号】：TE322;F426.22

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