徐深气田火山岩气藏合理配产方法研究
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摘要
徐深气田火山岩气藏储层岩性复杂,非均质性强,气田开采难度大,而且目前没有成功的开发经验可以借鉴。从现有试采井看,气藏大部分存在着边水或者底水,因此必须对多种影响因素进行综合研究,确定合理配产方法,控制好气藏的开采方式,使气井在合理产量下生产,防止气藏过早出现水淹等情况,以保证气藏具有较高的采出程度。
本文以天然气开发管理纲要为框架,充分利用取得的静、动态资料,结合前期研究成果,以气藏精细描述和气田开发特征为基础,通过深入研究徐深气田气井的产能评价方法,获得了气井的二项式及指数式的产能方程并计算出无阻流量;通过节点系统分析方法建立多相管流模型并计算出协调产量;利用压降法计算井控储量;建立了携液模型计算临界携液产量并考虑了相关的影响因素;根据气井的生产资料,优选了底水锥进临界产量的计算方法;研究流体分布规律,对气田及气井的出水情况进行动态分析。在以上研究的基础上对气井进行多因素综合配产,以能量合理利用、压降均衡、采气速度均衡、有效控水、携液安全为原则,形成了一套适合徐深气田气井开采的多因素综合配产方法,为气田合理开发,长期稳产提供技术支持。
Xu deep volcanic gas reservoir is typical of lithology complexity, severity inhomogeneity, big difficulty of extract. Nowadays, it hasn’t come into being some method and experience which for volcanic gas reservoir. It exist edge water or basal water in Xu which is based on data of producing test well, so we must carry out synthetical research from multi-effect factor to confirm reasonably production and extract method which can make gas well output reaonably and prevent from flooding , we can get a big degree of reserve recovery.
The paper which is based on natural gas supervise design is that we can get deliverability equatio and AOF which depends on reservoir depict and develop feature by means of static and dynamic state data and early research;establish multiphase conduit flow model which is based on nodal system analysis method to calculate harmonize production;calculate well reserves applying drawdown method;confirm interface throughput capacity considering temperature and pressure;optimise calculate method which is used for water coning interface production depending on well means of production;study fluid distribute rule which can get well water out situation. it is a reasonably production proration method depending on these study which including multi-element in Xu gas reservoir that capacity use、pressure drawdown、gas recovery rate、water out and throughout water data is reasonably,so we can long term use it to guide gas field exploitation.
本文以天然气开发管理纲要为框架,充分利用取得的静、动态资料,结合前期研究成果,以气藏精细描述和气田开发特征为基础,通过深入研究徐深气田气井的产能评价方法,获得了气井的二项式及指数式的产能方程并计算出无阻流量;通过节点系统分析方法建立多相管流模型并计算出协调产量;利用压降法计算井控储量;建立了携液模型计算临界携液产量并考虑了相关的影响因素;根据气井的生产资料,优选了底水锥进临界产量的计算方法;研究流体分布规律,对气田及气井的出水情况进行动态分析。在以上研究的基础上对气井进行多因素综合配产,以能量合理利用、压降均衡、采气速度均衡、有效控水、携液安全为原则,形成了一套适合徐深气田气井开采的多因素综合配产方法,为气田合理开发,长期稳产提供技术支持。
Xu deep volcanic gas reservoir is typical of lithology complexity, severity inhomogeneity, big difficulty of extract. Nowadays, it hasn’t come into being some method and experience which for volcanic gas reservoir. It exist edge water or basal water in Xu which is based on data of producing test well, so we must carry out synthetical research from multi-effect factor to confirm reasonably production and extract method which can make gas well output reaonably and prevent from flooding , we can get a big degree of reserve recovery.
The paper which is based on natural gas supervise design is that we can get deliverability equatio and AOF which depends on reservoir depict and develop feature by means of static and dynamic state data and early research;establish multiphase conduit flow model which is based on nodal system analysis method to calculate harmonize production;calculate well reserves applying drawdown method;confirm interface throughput capacity considering temperature and pressure;optimise calculate method which is used for water coning interface production depending on well means of production;study fluid distribute rule which can get well water out situation. it is a reasonably production proration method depending on these study which including multi-element in Xu gas reservoir that capacity use、pressure drawdown、gas recovery rate、water out and throughout water data is reasonably,so we can long term use it to guide gas field exploitation.
引文
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[6]王玉文等,确定气井合理产量和预测新井产能方法研究[J].天然气工业,1993,9(3)12-23.
[7]李士伦,天然气工程[M].石油工业出版社,2000,11(5)36-45.
[8]张子枢,胡邦辉.国内外火山岩油气藏研究现状及勘探技术调研(J).天然气勘探与开发,1994,13(1):12-15.
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[11]王璞君、陈树民等.松辽盆地火山岩相与火山岩储层的关系[J].石油与天然气地质,2003,24(1):18-23.
[12]王成,邵红梅,洪淑新.徐深1井火山岩、砾岩储层特征研究[J].大庆石油地质与开发,2003,22(5):1-4.
[13]徐正顺,大庆徐深气田火山岩气藏储集层识别与评价[J].石油勘探与开发.2006,33(5):521-531.
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[16] Cullender M.H.The Isochronal Performance Method of Determining the Flow Characteristics of Gas Wells.Trans,AIME,204,1955:137~142.
[17]葛家理等编著.现代油藏渗流力学原理[M].北京:石油工业出版社,2001.
[18]翟云芳主编.渗流力学[M].北京:石油工业出版社,2003.
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[23] C.U.IKOKU.Natural Gas Prodution Engineering.John Wiley&Sons,Inc.1984.
[24]杨继盛,节点分析在气田上的应用[J].天然气工业.1989.
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[35]王鸣华.碳酸盐岩气田气井的出水类型及其特征[J].天然气工业,1981,1(2):51-56.
[36]邓勇,杜志敏,陈朝晖.涩北气田多层合采出水原因及识别[J].石油天然气学报,2008(02).
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[44]刘双全,吴晓东.气井井筒携液临界流速和临界流量的动态分布[J].天然气工业.2007,27(2):106-106.
[45] R.G.Turner and M.G.Hubbard.Analysis and Prediction of Minimum Flow Rate for theContinuous Removal of Liquids from Gas Wells[J].SPE2198,1969.
[46] Meshack Ike IIobi and Chi U.Ikoku.Minimum Gas Flow Rate for Continuous Liquid Removal in Gas Wells[J].SPE10170,1981.
[47]刘广峰,何顺利.气井连续携液气井产量的计算方法[J].天然气工业,2006,26(10):114-116.
[48]李闽,郭平.气井携液新观点[J].石油勘探与开发,2001,28(5):105.
[49]王毅忠,刘庆文.计算气井最小携液临界流量的新方法[J].大庆石油地质与开发,2007,26(6):82-84.
[50]郝斐,张公社.携液气井产能方程研究[J].天然气工业,2006年6月,26(6): 92-94.
[51]窦宏恩.水平井开采底水油藏临界产量的计算[M].石油钻采工艺,1997;19(3):70-75.
[52] Jacques Hagoort.Developments in Petroleum Science[J].23.Fundamentals of Gas Reservoir.Engineering,Elsevier Scientific Publishing Company NEW YORK,1978:423-425.
[53]李传亮.修正DUPUIT临界产量公式[J].石油勘探与开发,1993;20(4):91-95.
[54] Schols,R.S.An Empirical Formula for the Critical Oil Production Rate[J].Erdoel Erdgas,Z,1972;88(1):6-11.
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