SPE储量价值评估方法在中江沙溪庙组致密气藏的应用
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摘要
SPE准则储量评价是当前国际上最具代表性的储量价值评价标准,与国内储量评价标准完全不同,在地质储量认识的基础上,根据方案不确定性因素对储量进一步分级分类后再评估储量价值。根据SPE准则的资源分类体系,综合考虑地质条件、工程技术、经济等因素,编制了适用于中江气田储量价值评估的方法和流程,对川西地区中江气田中侏罗统沙溪庙组气藏A井区开展了SPE储量价值评估。结果表明:①通过对其油气资源评价单元的划分、商业性划分和油气资源具体分类分级的评估,认为中江气田沙溪庙组气藏具备商业开采价值;②对于非均质性强的窄河道,采用不确定性方法标定采收率来进行储量价值评估,可得到最佳技术可采储量分级并评估结果;③采用最佳估值方案进行开发指标预测,再进行储量价值评估,是对储量全生命周期的综合评价方式,真实地反映了中江沙溪庙组气藏A井区目前储量的开发价值。
At present, a standard to evaluate SPE reserves, as the most representative one globally, is absolutely different from domestic standard. For this SPE standard, reserve value is evaluated on the basis of some understandings on geological reserves after the reserves are further classified and graded according to uncertainties. So, based on resource classification of SPE standard, a method to evaluate this value available for Zhongjiang gasfield was compiled with full consideration of geological conditions, engineering technologies, and economy. And then, it was applied to evaluate the SPE reserve value of A wellblock from gas reservoirs of Shaximiao Formation, Zhongjiang gasfield, western Sichuan Basin. Results show that(1) after gas resource evaluation units are commercially classified and gas resources are specifically evaluated on the basis of classification and grade, it is concluded that these Shaximiao gas reservoirs have the value of commercial production;(2) as for narrow channel with strong heterogeneity, the reserve value evaluated by uncertainty method to calibrate recovery factor can provide an optimal assessment on technically recoverable reserves; and(3) not only predicting development index by using the best estimation plan but also evaluating the reserve value are comprehensive evaluation modes for the whole life cycle, and it can truly reflect the current reserve development value of A wellblock.
At present, a standard to evaluate SPE reserves, as the most representative one globally, is absolutely different from domestic standard. For this SPE standard, reserve value is evaluated on the basis of some understandings on geological reserves after the reserves are further classified and graded according to uncertainties. So, based on resource classification of SPE standard, a method to evaluate this value available for Zhongjiang gasfield was compiled with full consideration of geological conditions, engineering technologies, and economy. And then, it was applied to evaluate the SPE reserve value of A wellblock from gas reservoirs of Shaximiao Formation, Zhongjiang gasfield, western Sichuan Basin. Results show that(1) after gas resource evaluation units are commercially classified and gas resources are specifically evaluated on the basis of classification and grade, it is concluded that these Shaximiao gas reservoirs have the value of commercial production;(2) as for narrow channel with strong heterogeneity, the reserve value evaluated by uncertainty method to calibrate recovery factor can provide an optimal assessment on technically recoverable reserves; and(3) not only predicting development index by using the best estimation plan but also evaluating the reserve value are comprehensive evaluation modes for the whole life cycle, and it can truly reflect the current reserve development value of A wellblock.
引文
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[15]胡奥林,汤浩,吴雨舟,等.2018年中国天然气发展述评及2019年展望[J].天然气技术与经济,2019,13(1):1-7,81.Hu Aolin,Tang Hao,Wu Yuzhou,et al.Review of China's natural gas development in 2018 and prospects for 2019[J].Natural Gas Technology and Economy,2019,13(1):1-7,81.
[16]李定军,卢娟,黎青,等.中江气田沙溪庙组气藏新增天然气探明储量报告[R].成都:中国石化西南油气分公司,2013:53-78.Li Dingjun,Lu Juan,Li Qing,et al.Report of additional gas proved reserves in Zhongjiang Js gas reservoir[R].Chengdu:SINOPEC Southwest Branch Company,2013:53-78.
[17]李定军,卢娟,廖开贵,等.中江气田沙溪庙组气藏新增天然气预测储量报告[R].成都:中国石化西南油气分公司,2013:31-34.Li Dingjun,Lu Juan,Liao Kaigui,et al.Report of additional gas possible reserves in Zhongjiang Js gas reservoir[R].Chengdu:SINOPEC Southwest Branch Company,2013:31-34.
[18]李定军,罗锋,付菊,等.中江气田沙溪庙组气藏新增天然气控制储量报告[R].成都:中国石化西南油气分公司,2014:45-73.Li Dingjun,Luo Feng,Fu Ju,et al.Report of additional gasprobable reserves in Zhongjiang Js gas reservoir[R].Chengdu:SINOPEC Southwest Branch Company,2014:45-73.
[19]四川油气区石油地质志编写组.中国石油地质志-卷十-四川油气区[M].北京:石油工业出版社,1989.Compiling Group of Petroleum Geology of Sichuan Oil and Gas Area.Petroleum geology of China-Vo1.10-Sichuan oil and gas area)[M].Beijing:Petroleum Industry Press,1989.
[20]甘振维.理论创新和技术进步支撑引领百亿气田建设[J].天然气工业,2016,32(12):1-9.Gan Zhenwei.Theoretical innovation and technical progress will usher in a production period of gas fields with an annual capacity of ten billion cubic meters[J].Natural Gas Industry,2016,32(12):1-9.
[2]Zainul AJ,Nor RM,Hong TY,Egbogah EO,Musbah AW,Hamdan MK,et al.An integrated approach to petroleum resources definitions,classification and reporting[C]//SPE Asia Pacific Oil and Gas Conference and Exhibition,14-16 April 1997,Kuala Lumpur,Malaysia.DOI:https://doi.org/10.2118/38044-MS.
[3]SPE,AAPG,WPC&SPEE.Petroleum resources management system[EB/OL].(2007-05-21)[2007-09-15].https://www.spe.org/industry/docs/Petroleum Resources Management System2007.pdf.
[4]SPE,AAPG,WPC,SPEE&SEG.Guideline for application of the petroleum resources management system[EB/OL].https://www.spe.org/industry/docs/PRMS Guidelines Nov2011.pdf.
[5]刘聪.PRMS与SEC油气储量评估准则异同对比分析[J].内蒙古石油化工,2015(19):56-59.Liu Cong.The contrast of PRMS and SEC oil and gas reserve evaluation[J].Inner Mongolia Petrochemical Industry,2015(19):56-59.
[6]胡允栋.基于不确定性分析的油气储量分类与评估方法[D].北京:中国地质大学(北京),2011.Hu Yundong.Oil and gas reserve classification and estimation on the basis of uncertainty analysis[D].Beijing:China University of Geosciences(Beijing),2011.
[7]李洪玺,张培军,代琤,等.美国PRMS与SEC两种油气储量准则差异分析[J].西南石油大学学报(自然科学版),2016,38(5):75-80.Li Hongxi,Zhang Peijun,Dai Cheng,et al.Difference analysis of oil&gas reserve rule between PRMS and SEC in U.S.[J].Journal of Southwest Petroleum University(Science&Technology Edition),2016,38(5):75-80.
[8]康安.SPE和SEC油气储量评估规范的更新及对比[J].国际石油经济,2010,18(6):61-64.Kang An.A comparison of updated SPE and SEC norms for oil and gas reserves estimation[J].International Petroleum Economics,2010,18(6):61-64.
[9]SPE,AAPG,WPC,SPEE&SEG.Guidelines for application of the petroleum resources management system[R/OL].http://www.spe.org/industry/docs/PRMS Guidelines Nov2011.pdf.
[10]刘红岐,刘诗琼,刘静.复杂致密储层裂缝特征研究[J].西南石油大学学报(自然科学版),2012,34(4):62-68.Liu Hongqi,Liu Shiqiong&Liu Jing.Study on the fracture characteristics of complex tight formation[J].Journal of Southwest Petroleum University(Science&Technology Edition),2012,34(4):62-68.
[11]高红贤,孙佳才.基于SPE准则的页岩气储量评估[J].中外能源,2018,23(2):34-37.Gao Hongxian&Sun Jiacai.Estimation of shale gas reserves based on SPE standards[J].Sino-Global Energy,2018,23(2):34-37.
[12]刘韵,罗锋,邓莉,等.SPE-PRMS准则储量评估方法研究及实例分析[J].中国石油和化工标准与质量,2018,38(7):13-14.Liu Yun,Luo Feng,Deng Li,et al.Study and analysis of SPE-PRMS reserve evaluation[J].China Petroleum and Chemical Standard and Quality,2018,38(7):13-14.
[13]郭齐军.石油和天然气剩余经济可采储量评估方法简介[J].天然气地球科学,2003,14(6):525-528.Guo Qijun.The brief introduction of method of reserves evaluation of remaining economic recoverable oil and gas[J].Natural Gas Geoscience,2003,14(6):525-528.
[14]刁凤琴.石油储量动态经济评价研究[D].武汉:中国地质大学(武汉),2007.Diao Fengqin.Study on dynamic economic evaluation of petroleum reserves[D].Wuhan:China University of Geosciences(Wuhan),2007.
[15]胡奥林,汤浩,吴雨舟,等.2018年中国天然气发展述评及2019年展望[J].天然气技术与经济,2019,13(1):1-7,81.Hu Aolin,Tang Hao,Wu Yuzhou,et al.Review of China's natural gas development in 2018 and prospects for 2019[J].Natural Gas Technology and Economy,2019,13(1):1-7,81.
[16]李定军,卢娟,黎青,等.中江气田沙溪庙组气藏新增天然气探明储量报告[R].成都:中国石化西南油气分公司,2013:53-78.Li Dingjun,Lu Juan,Li Qing,et al.Report of additional gas proved reserves in Zhongjiang Js gas reservoir[R].Chengdu:SINOPEC Southwest Branch Company,2013:53-78.
[17]李定军,卢娟,廖开贵,等.中江气田沙溪庙组气藏新增天然气预测储量报告[R].成都:中国石化西南油气分公司,2013:31-34.Li Dingjun,Lu Juan,Liao Kaigui,et al.Report of additional gas possible reserves in Zhongjiang Js gas reservoir[R].Chengdu:SINOPEC Southwest Branch Company,2013:31-34.
[18]李定军,罗锋,付菊,等.中江气田沙溪庙组气藏新增天然气控制储量报告[R].成都:中国石化西南油气分公司,2014:45-73.Li Dingjun,Luo Feng,Fu Ju,et al.Report of additional gasprobable reserves in Zhongjiang Js gas reservoir[R].Chengdu:SINOPEC Southwest Branch Company,2014:45-73.
[19]四川油气区石油地质志编写组.中国石油地质志-卷十-四川油气区[M].北京:石油工业出版社,1989.Compiling Group of Petroleum Geology of Sichuan Oil and Gas Area.Petroleum geology of China-Vo1.10-Sichuan oil and gas area)[M].Beijing:Petroleum Industry Press,1989.
[20]甘振维.理论创新和技术进步支撑引领百亿气田建设[J].天然气工业,2016,32(12):1-9.Gan Zhenwei.Theoretical innovation and technical progress will usher in a production period of gas fields with an annual capacity of ten billion cubic meters[J].Natural Gas Industry,2016,32(12):1-9.