油气藏评价与开发
油氣藏評價與開髮
유기장평개여개발
2013年
4期
35-40,61
,共7页
低渗薄层油藏%压裂%正交分析%渗透率经济界限%有效厚度经济界限
低滲薄層油藏%壓裂%正交分析%滲透率經濟界限%有效厚度經濟界限
저삼박층유장%압렬%정교분석%삼투솔경제계한%유효후도경제계한
low permeability and thin-layer reservoir%fracture%orthogonal analysis%permeability economic boundaries%effective thickness economic boundaries
低渗薄层油藏开发难度大，实施压裂改造投资高、风险大。因此，在进行压裂开发之前要评估压裂的经济可行性，同时为方案优选提供依据。采用油藏数值模拟方法和经济学中的盈亏平衡分析原理，确定低渗薄层油藏合理压裂开发的渗透率经济界限和有效厚度经济界限；并应用正交分析方法，对油价、井距、开采年限等进行敏感性分析，确定各因素对经济界限的影响程度。只有确定了各项开发指标的经济极限点，才能有的放矢地对低渗薄层油田开发实施合理的管理。得到以下结论：对渗透率经济界限影响最大的是生产年限，其次依次为有效厚度，油价和井距；对有效厚度经济界限影响最大的是渗透率，其次依次为井距、生产年限和油价；各影响因素与经济界限呈反相关，随影响因素值增大，经济界限值减小。
低滲薄層油藏開髮難度大，實施壓裂改造投資高、風險大。因此，在進行壓裂開髮之前要評估壓裂的經濟可行性，同時為方案優選提供依據。採用油藏數值模擬方法和經濟學中的盈虧平衡分析原理，確定低滲薄層油藏閤理壓裂開髮的滲透率經濟界限和有效厚度經濟界限；併應用正交分析方法，對油價、井距、開採年限等進行敏感性分析，確定各因素對經濟界限的影響程度。隻有確定瞭各項開髮指標的經濟極限點，纔能有的放矢地對低滲薄層油田開髮實施閤理的管理。得到以下結論：對滲透率經濟界限影響最大的是生產年限，其次依次為有效厚度，油價和井距；對有效厚度經濟界限影響最大的是滲透率，其次依次為井距、生產年限和油價；各影響因素與經濟界限呈反相關，隨影響因素值增大，經濟界限值減小。
저삼박층유장개발난도대，실시압렬개조투자고、풍험대。인차，재진행압렬개발지전요평고압렬적경제가행성，동시위방안우선제공의거。채용유장수치모의방법화경제학중적영우평형분석원리，학정저삼박층유장합리압렬개발적삼투솔경제계한화유효후도경제계한；병응용정교분석방법，대유개、정거、개채년한등진행민감성분석，학정각인소대경제계한적영향정도。지유학정료각항개발지표적경제겁한점，재능유적방시지대저삼박층유전개발실시합리적관리。득도이하결론：대삼투솔경제계한영향최대적시생산년한，기차의차위유효후도，유개화정거；대유효후도경제계한영향최대적시삼투솔，기차의차위정거、생산년한화유개；각영향인소여경제계한정반상관，수영향인소치증대，경제계한치감소。
Due to the difficulties in developing low permeability and thin-layer reservoirs, and high investment and great risk in fracturing, it is necessary to evaluate economic feasibility before fracturing development and provide basis for the plan optimization. Reservoir numerical simulation method and breakeven analysis in economics are used to determine the permeability economic boundaries and effective thickness economic boundaries of the rational fracturing development of low permeability and thin-layer reservoirs. The orthogonal analysis is used to analyze the sensitivity of oil price, inter well distance and production life to determine the impact of each factor on the economic boundaries. Only by determining the economic limit point can the targeted management of the development of low permeability and thin-layer reservoir implement reasonably. It is proved that the production life influenc?es the permeability economic boundaries most, while the following are effective thickness, oil price and inter well distance. The per?meability influences the effective thickness boundaries most, while the following are inter well distance, production life and oil price. Each factor is inversely correlated with the economic boundaries, that is, the bigger the influence factor value is, the smaller the economic boundaries will be.
