我国致密油分布广阔,资源潜力巨大,但资源品位低,开采技术和成本要求高.通过综合研究,提出了致密油藏经济评价的两种方法,即折现现金流法和投资效果系数法,并通过金宝致密油藏的评价实例验证了方法的可行性.结合国内外非常规油气资源经济评价指标,提出对致密油藏经济评价工作4个方面的思考:加强致密油勘探开发经济评价方法、参数和评价标准的研究;有效益地开发致密油,重在优化;政策扶持对致密油的勘探开发起着关键性的作用;要正确看待当前效益与可持续发展的关系.

The implementation effect of SAGD is evaluated and economic evaluation indicators and evaluation methods in life cycle are established based on the construction cycle of the project and by using and without methods and tracing comparison methods.The study shows that the SAGD project not only results in economic benefit but also promotes industrial chain concerned with it and social benefit.The study results play a guide role in the implementation of SAGD project.Field application shows that the economic evaluation methods and indicator system has a certain adaptability and innovation.

Secondary development in Liaohe Oilfield is more complex,technical consuming and highly risky than primary development.This paper approaches economic assessment method and index system for secondary development on the basis of financial profit-making ability evaluation.Conclusive assessment of the economic benefit for primary development and follow-up economic assessment for the test result of secondary development are added.A suitable economic assessment method and index system has been established for secondary development.The practice of secondary development assessment for Block Xinhai27 in Liaohe Oilfield has shown that this method is applicable and innovative.

The economy post-evaluates on productivity construction is an objective and systemic analysis of the economic benefits and the purpose of finished project.We can confirm whether we may achieve the goals,find the main reason for success or failure,sum up experience by analysing and evaluating.And then some advice on the project decision is given in the future to improve the level of investment and decision.Combined with the exploitation characteristics of LiaoHe oil region,The paper researches the method,parameter and index system of the economy post-evaluates on productivity construction project,provides reference opinion on combining the methods of the post-evaluates used in LiaoHe oil region with those applied commonly in the world,for improving the investment benefits and the level of decision on the productivity construction project.

In Economic Evaluation, the residue value of the fixed asset was that the net value of the fixed assets flowed into the cash flow as cash recovery at the end of the evaluation term. Because of different kinds of fixed asset investment (singular or progressing), and different terms of evaluation (generally ranges from 6 to 15 years), the recovery of the residue value of the fixed asset may influence the final result of the economic evaluation greatly, even change the conclusion on the feasibility of the project. This article discussed the approaches dealing with the residue value of fixed assets based on the economic evaluation on different development plans of different types of investment and evaluation terms.

从石油储量管理的现状入手,通过石油地质学和技术经济学的有机结合,按照未动用储量的落实程度,在现有技术水平、财务政策、开发方式、经营管理体制条件下,按照未开发储量投入开发后预期的内部收益率,将未动用储量分为近期可开发储量、低效一类储量、低效二类储量和暂无效益储量四类.对近期可开发储量的经济评价通常采用常规经济评价;对于低效储量,首先估算出该块近期投入开发的概率分布,通过开发概念设计进行现金流量计算;对于暂无效益储量,主要进行商业开采的风险评价.通过Y1和Y2区块的实际资料验证,证实了研究结果的可行性,它对于科学地盘活地下存量,实现储量探明与开发的有机结合,树立效益第一的观念,具有重要的指导意义.

To enhance the investment effect of well work over, reducing investment of no effect, making good use of work over budget, the authors proposed the concept of minimum oil production increment cutoff of oil well work over, giving the algorithm of calculating the minimum oil production increment cutoff of oil well work over according to the theory of technological economics. We took 1737 instances of 10 categories of well work over in SG Oil Production Plant of Liaohe Oilfield as examples showing that the calculation of the minimum oil increment cutoff can evaluate the economic result of the well work over objectively and thoroughly. It can be used effectively for the screening of work over plans, managing the reservoirs according to the norm that economics plays the key role in reservoir management.

面对老油田含水上升,产量递减加快,油田稳产举步维艰的局面,各生产单位都不同程度地加大了进攻性措施的工作力度.措施投入逐年增加,经济效益逐渐变差.无效投入的递增,已经成为影响油田经济效益的一个重要因素.以技术经济学的投入产出理论为基础,立足生产实际,建立了各项增产措施的有效投入标准,对影响措施投入效果的因素进行认真分析,并在辽河油区LB油田的投资分析决策中应用,初步探索了措施投资与生产管理的最佳组合,为采油单位合理优选油井措施,科学利用有限资金,提供了行之有效的技术途径.

针对老油田增产措施投入力度逐年增大,而增产效果变差的矛盾,从措施的投入产出分析入手,对油井措施经济效益计算方法进行研究,提出了单井次措施投入、措施增油量和增液量及增量操作成本、措施效益等的计算方法,进而研究提出了油井措施效益指标体系和效益判别方法,初步建立了一套措施作业费用计算方法.这些方法既涉及了油田的地质开发参数,又考虑了目前的经济技术参数.通过辽河油田的实际资料,进一步证实了这种方法的实用性.