负压采气技术在苏里格气田实施的可行性论证
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摘要
苏里格气田具有低孔、低渗、低产、低压、强非均质的特点,由于早期缺乏对气井的生产动态特征认识,致使生产压差增大,井口压力快速降低,从而引起气田开发稳产和单井开发效果比预想差的现象,气井单井产能低,气田开发经济效益不明显。气田开发中后期,负压采气技术不仅可以加快开采速度,还能提高气田最终采出程度,使有限的能源得到充分利用。
本文首先对国内外负压采气技术与发展现状做了详细调研,在对苏里格气田开发地质特征认识与生产形势分析的基础上,分别从气田开发中后期气井动态产能预测分析、后期低压阶段剩余可采储量预测、应用节点系统分析预测负压增产潜力、数值模拟预测负压采气方案指标四个方面对苏里格气田气井负压开采进行了可行性论证。然后对苏里格气田气井负压开采技术进行了经济评价,最后提出了苏里格气田实现气井负压开采的技术要求。研究结果表明,苏里格气田部分气井存在压力敏感特征,单从技术指标而言实现负压采气可提高气田采收率,但在目前井口气价和负压设备价格条件下,在苏里格气田低压气井实施负压采气要实现经济上产出大于投入是有一定困难的。
Sulige gas field has characteristics of low porosity, low permeability, low yield, low pressure and severe heterogeneous. In the early stage, because of the knowledge lack of dynamic productivity characteristics of gas wells, it resulted in that production pressure difference increased, and wellhead pressure reduced, thus caused bad effect of stable production and single gas well development than expected, low production capacity in single gas well, and economic benefits of gas field development was not obvious. In the late stage of gas field development negative pressure production technology can not only speed up exploitation speed, but also improve the level of gas eventually recovery percent, so that the limited energy resources can be fully utilized.
This article first made a detailed study on negative pressure production technology and development status at home and abroad. On the basis of geological features knowledge and production situation analysis in Sulige gas field, it carried out feasibility study on negative pressure production technology from four aspects separately, which were dynamic gas well productivity prediction analysis of gas field in the mid-and-late stage, remaining recoverable reserves prediction in the late low-pressure stage, negative pressure potential yield prediction analysis using node system, numerical simulation prediction of negative pressure production program targets in Sulige gas field. And it made economic evaluation and proposed technical requirements to achieve gas well production using negative pressure technology in Sulige gas field. The results show that some of gas wells in Sulige gas field exists pressure-sensitive characteristic. Only from technology indicator, the implementation of negative pressure production can improve gas field recovery, but owing to the current price condition of wellhead gas and negative pressure equipment, it is difficult to achieve that economic output is more than input in the implementation of negative pressure production to low-pressure gas wells in Sulige gas field.
本文首先对国内外负压采气技术与发展现状做了详细调研,在对苏里格气田开发地质特征认识与生产形势分析的基础上,分别从气田开发中后期气井动态产能预测分析、后期低压阶段剩余可采储量预测、应用节点系统分析预测负压增产潜力、数值模拟预测负压采气方案指标四个方面对苏里格气田气井负压开采进行了可行性论证。然后对苏里格气田气井负压开采技术进行了经济评价,最后提出了苏里格气田实现气井负压开采的技术要求。研究结果表明,苏里格气田部分气井存在压力敏感特征,单从技术指标而言实现负压采气可提高气田采收率,但在目前井口气价和负压设备价格条件下,在苏里格气田低压气井实施负压采气要实现经济上产出大于投入是有一定困难的。
Sulige gas field has characteristics of low porosity, low permeability, low yield, low pressure and severe heterogeneous. In the early stage, because of the knowledge lack of dynamic productivity characteristics of gas wells, it resulted in that production pressure difference increased, and wellhead pressure reduced, thus caused bad effect of stable production and single gas well development than expected, low production capacity in single gas well, and economic benefits of gas field development was not obvious. In the late stage of gas field development negative pressure production technology can not only speed up exploitation speed, but also improve the level of gas eventually recovery percent, so that the limited energy resources can be fully utilized.
This article first made a detailed study on negative pressure production technology and development status at home and abroad. On the basis of geological features knowledge and production situation analysis in Sulige gas field, it carried out feasibility study on negative pressure production technology from four aspects separately, which were dynamic gas well productivity prediction analysis of gas field in the mid-and-late stage, remaining recoverable reserves prediction in the late low-pressure stage, negative pressure potential yield prediction analysis using node system, numerical simulation prediction of negative pressure production program targets in Sulige gas field. And it made economic evaluation and proposed technical requirements to achieve gas well production using negative pressure technology in Sulige gas field. The results show that some of gas wells in Sulige gas field exists pressure-sensitive characteristic. Only from technology indicator, the implementation of negative pressure production can improve gas field recovery, but owing to the current price condition of wellhead gas and negative pressure equipment, it is difficult to achieve that economic output is more than input in the implementation of negative pressure production to low-pressure gas wells in Sulige gas field.
引文
[1]Bantam compressor stations move natural gas to market.PLI,Sept,1985.
[2]Richard Payton et al.Interconnecting compressors control coalbed gas production.OGJ,Oct.1992.
[3]Dennis Antieauet al.Monitoring system protects stationsfrom oxygen hazard.PLI,July,1978
[4]James E.Mcknight.Air exclusion keyto gathering system upkeep.OGJ,Feb,1988
[5]袁宗明,邓道明.低压气集输工程的技术特点[J].天然气工业,1997,17(3):59-63.
[6]H.L,Neal Jr.Improved Productivity From Low-Pressure Gas Wells Through the Utilization of Wellsite Compression.SPE 28889,1989.
[7]N.Behl,K.E.Kiser,and J.Ryan.Villa.Improved Production in Low-Pressure Gas Wells by Installing Wellsite Compressors.SPE 99317,2006.
[8]M.U,Aladyrus.Boosting deliverability in the giant Arun Gas Field.[C].SPE 22997,1991.
[9]G.DeGhetto,F.Paone,K.L.Nielsen,M.Villa.A New System To Enhance Production of Mature Well.SPE 49170,1998.
[10]John W.Cramer.Lea.Simple Field Compressor Automation Delivers Improved Production and Increased Efficiency.SPE91472,2004.
[11]禹继贫.邓井关气田负压采气工艺效果分析[J].天然气工业,1997,17(1):83-84.
[12]蒋长春.负压采气新工艺改进[J].天然气工业,1996,16(5):86-87.
[13]四川石油管理局川东开发公司.自动连续负压采气工艺[P].中国专利:93120618,1994.
[14]周泽山.“41条”领航四川油气田“加速”之路[N]中国石油报,2007-8-15.
[15]郑杰.286 kW二冲程整体式燃气摩托压缩机的研制[J].天然气工业,1996,(1):65-67.
[16]J.E.N.Liley.Downhole pressure boosting in natural gas wells:Candidate Selection and Project Progress.[C].SPE 96037,2005.
[17]刘神,王登海等.苏里格气田天然气集输工艺技术的优化创新[J].天然气工业,2007,27(5):139-141.
[18]蒋成银,贾增强,冯朋鑫.井下节流工艺技术在苏里格气田的应用[J].石油化工应用,2007,26(3):53-56.
[19]武喜怀.苏里格气田天然气压缩机组选型对比分析[J].石油化工应用,2007,21(1):45-48.
[20]Arps J.J.Analysis of decline curve[M].AIME 1945:160-247.
[21]姜汉桥,姚军,姜瑞忠.油藏工程原理与方法[M].山东 东营:中国石油大学出版社,2000:246-257.
[22]李春兰,张忠义,程仲平.一种简单可靠的产量递减分析方法[J].新疆石油地质,1997,18(3):259-263.
[23]吴森光.一种有效的产量递减分析方法[J].石油勘探与开发,1992,19(6):51-57.
[24]陈元千.实用油气藏工程方法[M].山东 东营:石油大学出版社,1998.
[25]郝玉鸿,王方元.地层压力下降对气井产能方程及无阻流量的影响分析[J].天然气工业,2000, 20(1):71-74。
[26]杨继盛.采气工艺基础[M].北京:石油工业出版社,1992:23-27.
[27]冈秦麟.气藏和气井动态分析及计算程序[M].北京:石油工业出版社,1996:1-12.
[28]李传亮.岩石应力敏感指数与压缩系数之间的关系式[J].岩性油气藏,2007,4(1):95-98.
[29]王焰东,陈明强.一种求解定容封闭气藏任意时刻地层压力的实用方法[J].西安石油大学学报(自然科学版),2008,23(5):40-42.
[30]李士伦.天然气工程[M].北京:石油工业出版社,2000:99-103,267-287.
[31]毛美丽.苏里格气田开发模式及经济效益评价[J].天然气经济,2006,5(1):60-63.
[32]吴添祖.技术经济学概论[M].北京.高等教育出版社,2003:39-40
[33]王爱东,殷爱贞.财务管理学[M].山东.中国石油大学出版社,2004:204.
[2]Richard Payton et al.Interconnecting compressors control coalbed gas production.OGJ,Oct.1992.
[3]Dennis Antieauet al.Monitoring system protects stationsfrom oxygen hazard.PLI,July,1978
[4]James E.Mcknight.Air exclusion keyto gathering system upkeep.OGJ,Feb,1988
[5]袁宗明,邓道明.低压气集输工程的技术特点[J].天然气工业,1997,17(3):59-63.
[6]H.L,Neal Jr.Improved Productivity From Low-Pressure Gas Wells Through the Utilization of Wellsite Compression.SPE 28889,1989.
[7]N.Behl,K.E.Kiser,and J.Ryan.Villa.Improved Production in Low-Pressure Gas Wells by Installing Wellsite Compressors.SPE 99317,2006.
[8]M.U,Aladyrus.Boosting deliverability in the giant Arun Gas Field.[C].SPE 22997,1991.
[9]G.DeGhetto,F.Paone,K.L.Nielsen,M.Villa.A New System To Enhance Production of Mature Well.SPE 49170,1998.
[10]John W.Cramer.Lea.Simple Field Compressor Automation Delivers Improved Production and Increased Efficiency.SPE91472,2004.
[11]禹继贫.邓井关气田负压采气工艺效果分析[J].天然气工业,1997,17(1):83-84.
[12]蒋长春.负压采气新工艺改进[J].天然气工业,1996,16(5):86-87.
[13]四川石油管理局川东开发公司.自动连续负压采气工艺[P].中国专利:93120618,1994.
[14]周泽山.“41条”领航四川油气田“加速”之路[N]中国石油报,2007-8-15.
[15]郑杰.286 kW二冲程整体式燃气摩托压缩机的研制[J].天然气工业,1996,(1):65-67.
[16]J.E.N.Liley.Downhole pressure boosting in natural gas wells:Candidate Selection and Project Progress.[C].SPE 96037,2005.
[17]刘神,王登海等.苏里格气田天然气集输工艺技术的优化创新[J].天然气工业,2007,27(5):139-141.
[18]蒋成银,贾增强,冯朋鑫.井下节流工艺技术在苏里格气田的应用[J].石油化工应用,2007,26(3):53-56.
[19]武喜怀.苏里格气田天然气压缩机组选型对比分析[J].石油化工应用,2007,21(1):45-48.
[20]Arps J.J.Analysis of decline curve[M].AIME 1945:160-247.
[21]姜汉桥,姚军,姜瑞忠.油藏工程原理与方法[M].山东 东营:中国石油大学出版社,2000:246-257.
[22]李春兰,张忠义,程仲平.一种简单可靠的产量递减分析方法[J].新疆石油地质,1997,18(3):259-263.
[23]吴森光.一种有效的产量递减分析方法[J].石油勘探与开发,1992,19(6):51-57.
[24]陈元千.实用油气藏工程方法[M].山东 东营:石油大学出版社,1998.
[25]郝玉鸿,王方元.地层压力下降对气井产能方程及无阻流量的影响分析[J].天然气工业,2000, 20(1):71-74。
[26]杨继盛.采气工艺基础[M].北京:石油工业出版社,1992:23-27.
[27]冈秦麟.气藏和气井动态分析及计算程序[M].北京:石油工业出版社,1996:1-12.
[28]李传亮.岩石应力敏感指数与压缩系数之间的关系式[J].岩性油气藏,2007,4(1):95-98.
[29]王焰东,陈明强.一种求解定容封闭气藏任意时刻地层压力的实用方法[J].西安石油大学学报(自然科学版),2008,23(5):40-42.
[30]李士伦.天然气工程[M].北京:石油工业出版社,2000:99-103,267-287.
[31]毛美丽.苏里格气田开发模式及经济效益评价[J].天然气经济,2006,5(1):60-63.
[32]吴添祖.技术经济学概论[M].北京.高等教育出版社,2003:39-40
[33]王爱东,殷爱贞.财务管理学[M].山东.中国石油大学出版社,2004:204.
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