气藏产量递减率计算方法研究
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摘要
目前各油田的递减率计算方法各不相同,相互之间容易混淆,计算结果无法统一对比衡量,而且鲜有针对气藏产量递减率计算方法的研究。总结归纳了现场应用最广泛的三类气藏产量递减率:年产能递减率、年产量递减率和年对年产量递减率,深入分析它们的含义、区别以及联系,并以Arps递减理论中的双曲递减、指数递减、调和递减和衰竭递减模型为基础,推导了三类产量递减率的数值关系,发现不管哪种递减模型,年产能递减率至少是年产量递减率的1.8倍;在实际生产中,可以求得一个递减率值,再利用换算关系式快速求取另外两个递减率值。以苏里格致密气藏苏5区块某集气站为研究对象,将这三类递减率及其数值关系应用于实际生产数据分析,计算结果证明了递减率之间数值关系的可靠性,进一步分析各产量递减率的实际意义,可以为气田的产量预测和生产管理提供指导。
Calculation methods of decline rate are diverse for each single oil field,which are too confusing to be the same index for comparison and analysis,and the calculation methods of production decline rate in gas reservoir are rarely studied.Three types of production decline rate of the gas reservoir widely used in the field were summed up including yearly productivity decline rate,yearly production decline rate and year-to-year production decline rate,and their meanings,differences and connections were analyzed deeply.Based on models of the hyperbolic decline,exponential decline,harmonic decline and depletion decline in the Arps decline theory,numerical relations of the three decline rates were derived.It found that yearly productivity de-cline rate is 1.8 times of the yearly production decline rate at least whatever the decline rate model is.In the actual production,a decline rate value may be solved,and the other two decline rate values may be solved by conversion formula.Three types of decline rate and their numerical relationship were applied to the analysis of actual production data in certain gas gathering station in Su5 block of Sulige tight gas reservoir.Calculated results proved the numerical relations among the decline rates.Further analysis on the production decline rate may provide guidance for production prediction and management of gas field.
Calculation methods of decline rate are diverse for each single oil field,which are too confusing to be the same index for comparison and analysis,and the calculation methods of production decline rate in gas reservoir are rarely studied.Three types of production decline rate of the gas reservoir widely used in the field were summed up including yearly productivity decline rate,yearly production decline rate and year-to-year production decline rate,and their meanings,differences and connections were analyzed deeply.Based on models of the hyperbolic decline,exponential decline,harmonic decline and depletion decline in the Arps decline theory,numerical relations of the three decline rates were derived.It found that yearly productivity de-cline rate is 1.8 times of the yearly production decline rate at least whatever the decline rate model is.In the actual production,a decline rate value may be solved,and the other two decline rate values may be solved by conversion formula.Three types of decline rate and their numerical relationship were applied to the analysis of actual production data in certain gas gathering station in Su5 block of Sulige tight gas reservoir.Calculated results proved the numerical relations among the decline rates.Further analysis on the production decline rate may provide guidance for production prediction and management of gas field.
引文
[1]李传亮.油藏工程原理[M].2版.北京:石油工业出版社,2011:237-239.
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[3]梁宇宁,宋考平,单五一,等.递减率的一种宏观改进算法[J].数学的实践与认识,2015,45(11):149-155.
[4]杨军.一种产量预测的新方法[J].特种油气藏,2006,13(3):56-57.
[5]田晓东,王凤兰,石成方,等.大庆喇萨杏油田产量递减率变化规律[J].石油学报,2006,27(增1):137-141.
[6]栾贝贝,王永东,樊万红.延长油田递减率计算方法研究[J].延安大学学报:自然科学版,2015,34(3);81-84.
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[8]喻秋兰,唐海,吕栋梁,等.气井产能递减规律研究[J].天然气勘探与开发,2012,35(3):41-43,52.
[9]杨正明,刘先贵,孙长艳,等.低渗透油藏产量递减规律及水驱特征曲线[J].石油勘探与开发,2000,27(3):55-56.
[10]ARPS J J.Analysis of Decline Curves[J].Society of Petroleum Engineers,1945,160(1):228-247.
[11]RUSHING J A,PEREGO A D,SULLIVAN R,et al.Estimating Reserves in Tight Gas Sands at HP/HT Reservoir Conditions:Use and Misuse of an Arps Decline Curve Methodology[C]//SPE Annual Technical Conference and Exhibition,11-14 November,2007,Anaheim,California,USA.
[12]KUPCHENKO C L,GAULT B W,MATTAR L.Tight Gas Production Performance Using Decline Curves[C]//CIPC/SPEGas Technology Symposium 2008 Joint Conference,16-19June,2008,Calgary,Alberta,Canada.
[13]刘占良,王琪,张林,等.苏里格气田东区气井产量递减规律[J].新疆石油地质,2015,36(1):82-85.
[14]YU S,MIOCEVIC D J.An Improved Method to Obtain Reliable Production and EUR Prediction for Wells with Short Production History in Tight/Shale Reservoirs[C]//Unconventional Resources Technology Conference,12-14 August,2013,Denver,Colorado,USA.
[15]熊敏,刘中云,李光.调和递减下年递减率与月递减率关系式的推导及应用[J].石油学报,1995(增):112-117.
[16]熊敏,李光,张勇.油田配产中年递减率与月递减率相互关系的研究[J].石油勘探与开发,1994,21(2):62-65.
[17]张宗达,邓维佳,胡海燕.油田现行的产量递减率计算方法及分析[J].西南石油学院学报:自然科学版,1998,20(2):69-73.
[2]王中敏.油田产量递减率和产能递减率的意义及应用[J].内蒙古石油化工,2012(18):27-28.
[3]梁宇宁,宋考平,单五一,等.递减率的一种宏观改进算法[J].数学的实践与认识,2015,45(11):149-155.
[4]杨军.一种产量预测的新方法[J].特种油气藏,2006,13(3):56-57.
[5]田晓东,王凤兰,石成方,等.大庆喇萨杏油田产量递减率变化规律[J].石油学报,2006,27(增1):137-141.
[6]栾贝贝,王永东,樊万红.延长油田递减率计算方法研究[J].延安大学学报:自然科学版,2015,34(3);81-84.
[7]刘常红,陈志海.塔河碳酸盐岩油藏产量递减特征与影响因素分析[J].特种油气藏,2010,17(6):72-74,116.
[8]喻秋兰,唐海,吕栋梁,等.气井产能递减规律研究[J].天然气勘探与开发,2012,35(3):41-43,52.
[9]杨正明,刘先贵,孙长艳,等.低渗透油藏产量递减规律及水驱特征曲线[J].石油勘探与开发,2000,27(3):55-56.
[10]ARPS J J.Analysis of Decline Curves[J].Society of Petroleum Engineers,1945,160(1):228-247.
[11]RUSHING J A,PEREGO A D,SULLIVAN R,et al.Estimating Reserves in Tight Gas Sands at HP/HT Reservoir Conditions:Use and Misuse of an Arps Decline Curve Methodology[C]//SPE Annual Technical Conference and Exhibition,11-14 November,2007,Anaheim,California,USA.
[12]KUPCHENKO C L,GAULT B W,MATTAR L.Tight Gas Production Performance Using Decline Curves[C]//CIPC/SPEGas Technology Symposium 2008 Joint Conference,16-19June,2008,Calgary,Alberta,Canada.
[13]刘占良,王琪,张林,等.苏里格气田东区气井产量递减规律[J].新疆石油地质,2015,36(1):82-85.
[14]YU S,MIOCEVIC D J.An Improved Method to Obtain Reliable Production and EUR Prediction for Wells with Short Production History in Tight/Shale Reservoirs[C]//Unconventional Resources Technology Conference,12-14 August,2013,Denver,Colorado,USA.
[15]熊敏,刘中云,李光.调和递减下年递减率与月递减率关系式的推导及应用[J].石油学报,1995(增):112-117.
[16]熊敏,李光,张勇.油田配产中年递减率与月递减率相互关系的研究[J].石油勘探与开发,1994,21(2):62-65.
[17]张宗达,邓维佳,胡海燕.油田现行的产量递减率计算方法及分析[J].西南石油学院学报:自然科学版,1998,20(2):69-73.