低渗透气田开发经济临界产量分析及其应用研究

发布时间：2018-04-05 15:24

本文选题：低渗透气田　切入点：经济临界产量　出处：《西南石油大学》2014年硕士论文

【摘要】：‘近年来,我国已探明天然气储量中低渗透气藏高达90%,且所占比例呈逐年上涨趋势。基于这种原因,把勘探开发目标瞄准在低渗透气田已势在必行。对于天然气开发企业来说,天然气产量越高,并非意味着经济效益就越好,如果天然气产量的增长是以投资和成本的大幅度增加为代价,势必会造成天然气单位利润的下降甚至亏损。因此,为更加经济、有效地对低渗透气田进行开发,满足天然气开发企业的目标收益,同时提高企业的开发质量和管理水平,对低渗透气田开发经济临界产量进行深入研究是至关重要的。本研究通过分析低渗透气田不同开发时期的开发特点及气田开发投资成本、天然气产量的构成及变化,结合天然气开发企业实际经营情况,引入了产能计算系数、产能建设临界值等经济指标,运用净现值法、边际分析法、动态盈亏平衡分析法等原理,分别建立了低渗透气田开发初期、开发中期、开发中后期及开发后期四个阶段的天然气经济临界产量计算模型并将其应用到N气田的实际生产开发中。各阶段模型充分考虑了天然气价格、天然气产量、操作成本、投资金额、营业税金及附加、商品率等经济指标,计算结果贴近低渗透气田的生产开发实际。各阶段经济临界产量计算模型不仅能计算气田不同开发时期的天然气经济临界产量,还可分析经济临界产量对天然气价格、基准收益率、操作成本等经济参数的敏感性。深入研究低渗透气田对实现天然气开发企业利润最大化,降低生产投资成本,加强气藏经营管理,提高天然气开发企业组织生产和投资决策能力具有重要的指导性意义。
[Abstract]:In recent years, 90 gas reservoirs have been proved in China, and the proportion is increasing year by year.For this reason, it is imperative to target exploration and development in low permeability gas fields.For natural gas producers, the higher the natural gas production, the better the economic benefits. If the increase in natural gas production comes at the expense of a large increase in investment and cost,Will inevitably cause the natural gas unit profit drop or even the loss.Therefore, in order to develop low permeability gas fields more economically and effectively, to meet the target income of natural gas development enterprises, and at the same time to improve the development quality and management level of the enterprises,It is very important to study the economic critical production of low permeability gas fields.Through analyzing the development characteristics of low permeability gas fields in different development periods, the investment cost of gas field development, the composition and changes of natural gas production, and combining with the actual operation situation of natural gas development enterprises, the productivity calculation coefficient is introduced.By using the principles of net present value method, marginal analysis method and dynamic break-even analysis method, respectively, the initial and middle stages of development of low permeability gas fields are established.The calculation model of economic critical production of natural gas in the middle and late stages of development is applied to the actual production and development of N gas field.Each stage model fully considers the economic indexes such as natural gas price, natural gas output, operation cost, investment amount, operating tax and additional tax, commodity rate, etc. The calculation results are close to the production and development practice of low permeability gas field.The model can not only calculate the economic critical production of natural gas in different development periods of gas field, but also analyze the sensitivity of economic critical production to the economic parameters such as natural gas price, benchmark rate of return, operating cost and so on.The deep study of low permeability gas fields is of great significance in realizing the profit maximization of natural gas development enterprises, reducing production investment cost, strengthening gas reservoir management and improving the ability of natural gas development enterprises to organize production and make investment decisions.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：F426.22;TE328

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