煤层气田开采后期地面集输增压方式优化
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摘要
沁水盆地南部是我国煤层气开发试验最早的地区之一,整体地质条件较好,开发条件佳。气田投产第5个年头产量达到峰值后开始逐渐递减,目前大部分生产井已进入开发生产后期。随排采时间增长,气井压力不断下降,产气量递减速率快,仅依靠单井和管网自身压力难以完成整个气田的集输过程,稳产形势严峻。结合气田开发后期面临的一系列问题,为增加气田全生命周期集输工艺的灵活性,对气田管网的压力系统进行优化。通过改变集输系统的压力级制,优选增压设备,有效降低了井口回压,单井产量显著提高,延长了气田的开采寿命,实现了老区高效开发。
Southern Qinshui Basin is one of the earliest coal-bed methane developing area in our country which has great geological and developmental conditions. Average daily gas production reached its peak value at the fifth year,then start to decline. Now most of the production wells have entered the later developing period. As time went by,pressure of the gas well declined continuously,and the production decline rate increased persistently. It was hard to complete the field gathering process only relying on the pressure of gas wells and pipe network themselves,keeping stable production had become a serious challenge. Facing series problems in the later stage of the gas field development,optimized the gathering system to increase the full life-cycle gathering process flexibility of the gas field. By changing the pressure levels of the gathering system,optimizing the supercharging equipment,which effectively reduced the wellhead backpressure. Now the production of gas wells has improved significantly,the life of gas field was prolonged,even the old field has obtained its better economic recovery.
Southern Qinshui Basin is one of the earliest coal-bed methane developing area in our country which has great geological and developmental conditions. Average daily gas production reached its peak value at the fifth year,then start to decline. Now most of the production wells have entered the later developing period. As time went by,pressure of the gas well declined continuously,and the production decline rate increased persistently. It was hard to complete the field gathering process only relying on the pressure of gas wells and pipe network themselves,keeping stable production had become a serious challenge. Facing series problems in the later stage of the gas field development,optimized the gathering system to increase the full life-cycle gathering process flexibility of the gas field. By changing the pressure levels of the gathering system,optimizing the supercharging equipment,which effectively reduced the wellhead backpressure. Now the production of gas wells has improved significantly,the life of gas field was prolonged,even the old field has obtained its better economic recovery.
引文
[1]吴建光,孙茂远,冯三利,等.国家级煤层气示范工程建设的启示——沁水盆地南部煤层气开发利用高技术产业化示范工程综述[J].天然气工业,2011,31(5):9-15.Wu Jianguang,Sun Maoyuan,Feng Sanli,et al.Good lessons from the state-level demonstration project of coalbed methane development:an overview of such hightech and commercial project in the southern Qinshui Basin[J].Natural Gas Industry,2011,31(5):9-15.
[2]陈仕林,李建春.沁南潘河煤层气田“分片集输一级增压”集输技术[J].天然气工业,2011,31(5):35-38.Chen Shilin,Li Jianchun.A case history of the Panhe CBM Gas Field of the southern Qinshui Basin:per-well gas gathered by each individual fractional valve set to one centralized boosting station[J].Natural Gas Industry,2011,31(5):35-38.
[3]叶建平,傅小康,李五忠.中国煤层气勘探开发技术与产业化[M].北京:地质出版社,2013.
[4]刘烨,巴玺立,刘忠付,等.煤层气地面工程工艺技术及优化分析[J].石油规划设计,2008,19(4):34-37,50.Liu Ye,Ba Xili,Liu Zhongfu,et al.Technology and optimization analysis of CBM surface facilities[J].Petroleum Planning&Engineering,2008,19(4):34-37,50.
[5]张遂安,曹立虎,杜彩霞.煤层气井产气机理及排采控压控粉研究[J].煤炭学报,2014,39(9):1927-1931.Zhang Suian,Cao Lihu,Du Caixia.Study on CBM production mechanism and control theory of bottom-hole pressure and coal fines during CBM well production[J].Journal of China Coal Society,2014,39(9):1927-1931.
[6]戚宇,韦重韬.煤层气井优先抽排煤层上部含水层水的研究[J].科学技术与工程,2014,14(27):12-15.Qi Yu,Wei Chongtao.Research on water draining preferentially from aquifer above coal seams in coal-bed methane well drainage[J].Science Technology and Engineering,2014,14(27):12-15.
[7]穆福元,孙粉锦,王一兵,等.沁水盆地煤层气田试采动态特征与开发技术对策[J].天然气工业,2009,29(9):117-119.Mu Fuyuan,Sun Fenjin,Wang Yibing,et al.Characteristics of preproduction performance&technical countermeasures in the coalbed methane gas field of Qinshui Basin[J].Natural Gas Industry,2009,29(9):117-119.
[8]郭大立,贡玉军,李曙光,等.煤层气排采工艺技术研究和展望[J].西南石油大学学报(自然科学版),2012,34(2):91-98.Guo Dali,Gong Yujun,Li Shuguang,et al.Research and prospect about the CBM drainage technology[J].Journal of Southwest Petroleum University(Science&Technology Edition),2012,34(2):91-98.
[9]叶建平,陆小霞.我国煤层气产业发展现状和技术进展[J].煤炭科学技术,2016,44(1):24-28.Ye Jianping,Lu Xiaoxia.Development status and technical progress of China coalbed methane industry[J].Coal Science and Technology,2016,44(1):24-28.
[10]陈仕林,齐建波,周军,等.煤层气田地面集输技术进展[J].油气储运,2015,34(12):1276-1279.Chen Shilin,Qi Jianbo,Zhou Jun,et al.Progresses in surface gathering techniques in coal-bed methane(CBM)fields[J].Oil&Gas Storage and Transportation,2015,34(12):1276-1279.
[11]裴红,刘文伟.“枝上枝”集输工艺在大型低渗、低产天然气田及煤层气田建设中的应用[J].石油规划设计,2010,21(2):12-15.Pei Hong,Liu Wenwei.Application of"Branch-off-Branch"gathering&transfer technology to the construction of large gas fields and CBM fields with low permeability and low yield[J].Petroleum Planning&Engineering,2010,21(2):12-15.
[12]叶健.潘庄煤层气集输工艺设计[J].煤气与热力,2009,29(9):1-4.Ye Jian.Design of Panzhuang coal-bed gas gathering process[J].Gas&Heat,2009,29(9):1-4.
[13]胡楠,胡世杰,蒋皓,等.煤层气田地面集输方式以及增压方式优化[J].煤气与热力,2011,31(9):6-9.Hu Nan,Hu Shijie,Jiang Hao,et al.Optimization of surface gathering modes and boosting modes in coal-bed methane field[J].Gas&Heat,2011,31(9):6-9.
[14]李海涛,虎海宾,赵凯,等.负压采气技术在丘东气田低压气井中的应用[J].天然气勘探与开发,2017,40(2):56-62.Li Haitao,Hu Haibin,Zhao Kai,et al.Application of negative pressure gas production technology in low pressure gas wells in Qiudong Gas Field[J].Natural Gas Exploration and Development,2017,40(2):56-62.
[15]蒋长春.负压采气新工艺改进[J].天然气工业,1996,16(5):86-87.Jiang Changchun.Improvement of negative pressure gas production process[J].Natural Gas Industry,1996,16(5):86-87.
[16]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.Yuan Zongming,Deng Daoming.Technical characteristics of low pressure gas gathering engineering[J].Natural Gas Industry,1997,17(3):59-63.
[17]陶永,王红霞,郑欣,等.沁水盆地煤层气田地面工程建设的优化及实践[J].煤气与热力,2015,35(5):28-34.Tao Yong,Wang Hongxia,Zheng Xin,et al.Optimizing and practice of ground engineering construction in Qinshui Basin CBM field[J].Gas&Heat,2015,35(5):28-34.
[18]孟凡华,马文峰,刘红霞,等.沁水盆地煤层气田地面集输技术现状与展望[J].天然气工业,2018,38(5):118-124.Meng Fanhua,Ma Wenfeng,Liu Hongxia,et al.CBM ground gathering and transportation technologies in the Qinshui Basin:status and prospect[J].Natural Gas Industry,2018,38(5):118-124.
[19]姚天鹏,赵磊,何世全,等.沁南夏店区块煤层气地面集输工艺优化及实践[J].中国煤层气,2015,12(2):23-26.Yao Tianpeng,Zhao Lei,He Shiquan,et al.Research on the optimization and practice of CBM surface gathering and transportation process in Xiadian Block of South Qinshui[J].China Coalbed Methane,2015,12(2):23-26.
[2]陈仕林,李建春.沁南潘河煤层气田“分片集输一级增压”集输技术[J].天然气工业,2011,31(5):35-38.Chen Shilin,Li Jianchun.A case history of the Panhe CBM Gas Field of the southern Qinshui Basin:per-well gas gathered by each individual fractional valve set to one centralized boosting station[J].Natural Gas Industry,2011,31(5):35-38.
[3]叶建平,傅小康,李五忠.中国煤层气勘探开发技术与产业化[M].北京:地质出版社,2013.
[4]刘烨,巴玺立,刘忠付,等.煤层气地面工程工艺技术及优化分析[J].石油规划设计,2008,19(4):34-37,50.Liu Ye,Ba Xili,Liu Zhongfu,et al.Technology and optimization analysis of CBM surface facilities[J].Petroleum Planning&Engineering,2008,19(4):34-37,50.
[5]张遂安,曹立虎,杜彩霞.煤层气井产气机理及排采控压控粉研究[J].煤炭学报,2014,39(9):1927-1931.Zhang Suian,Cao Lihu,Du Caixia.Study on CBM production mechanism and control theory of bottom-hole pressure and coal fines during CBM well production[J].Journal of China Coal Society,2014,39(9):1927-1931.
[6]戚宇,韦重韬.煤层气井优先抽排煤层上部含水层水的研究[J].科学技术与工程,2014,14(27):12-15.Qi Yu,Wei Chongtao.Research on water draining preferentially from aquifer above coal seams in coal-bed methane well drainage[J].Science Technology and Engineering,2014,14(27):12-15.
[7]穆福元,孙粉锦,王一兵,等.沁水盆地煤层气田试采动态特征与开发技术对策[J].天然气工业,2009,29(9):117-119.Mu Fuyuan,Sun Fenjin,Wang Yibing,et al.Characteristics of preproduction performance&technical countermeasures in the coalbed methane gas field of Qinshui Basin[J].Natural Gas Industry,2009,29(9):117-119.
[8]郭大立,贡玉军,李曙光,等.煤层气排采工艺技术研究和展望[J].西南石油大学学报(自然科学版),2012,34(2):91-98.Guo Dali,Gong Yujun,Li Shuguang,et al.Research and prospect about the CBM drainage technology[J].Journal of Southwest Petroleum University(Science&Technology Edition),2012,34(2):91-98.
[9]叶建平,陆小霞.我国煤层气产业发展现状和技术进展[J].煤炭科学技术,2016,44(1):24-28.Ye Jianping,Lu Xiaoxia.Development status and technical progress of China coalbed methane industry[J].Coal Science and Technology,2016,44(1):24-28.
[10]陈仕林,齐建波,周军,等.煤层气田地面集输技术进展[J].油气储运,2015,34(12):1276-1279.Chen Shilin,Qi Jianbo,Zhou Jun,et al.Progresses in surface gathering techniques in coal-bed methane(CBM)fields[J].Oil&Gas Storage and Transportation,2015,34(12):1276-1279.
[11]裴红,刘文伟.“枝上枝”集输工艺在大型低渗、低产天然气田及煤层气田建设中的应用[J].石油规划设计,2010,21(2):12-15.Pei Hong,Liu Wenwei.Application of"Branch-off-Branch"gathering&transfer technology to the construction of large gas fields and CBM fields with low permeability and low yield[J].Petroleum Planning&Engineering,2010,21(2):12-15.
[12]叶健.潘庄煤层气集输工艺设计[J].煤气与热力,2009,29(9):1-4.Ye Jian.Design of Panzhuang coal-bed gas gathering process[J].Gas&Heat,2009,29(9):1-4.
[13]胡楠,胡世杰,蒋皓,等.煤层气田地面集输方式以及增压方式优化[J].煤气与热力,2011,31(9):6-9.Hu Nan,Hu Shijie,Jiang Hao,et al.Optimization of surface gathering modes and boosting modes in coal-bed methane field[J].Gas&Heat,2011,31(9):6-9.
[14]李海涛,虎海宾,赵凯,等.负压采气技术在丘东气田低压气井中的应用[J].天然气勘探与开发,2017,40(2):56-62.Li Haitao,Hu Haibin,Zhao Kai,et al.Application of negative pressure gas production technology in low pressure gas wells in Qiudong Gas Field[J].Natural Gas Exploration and Development,2017,40(2):56-62.
[15]蒋长春.负压采气新工艺改进[J].天然气工业,1996,16(5):86-87.Jiang Changchun.Improvement of negative pressure gas production process[J].Natural Gas Industry,1996,16(5):86-87.
[16]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.Yuan Zongming,Deng Daoming.Technical characteristics of low pressure gas gathering engineering[J].Natural Gas Industry,1997,17(3):59-63.
[17]陶永,王红霞,郑欣,等.沁水盆地煤层气田地面工程建设的优化及实践[J].煤气与热力,2015,35(5):28-34.Tao Yong,Wang Hongxia,Zheng Xin,et al.Optimizing and practice of ground engineering construction in Qinshui Basin CBM field[J].Gas&Heat,2015,35(5):28-34.
[18]孟凡华,马文峰,刘红霞,等.沁水盆地煤层气田地面集输技术现状与展望[J].天然气工业,2018,38(5):118-124.Meng Fanhua,Ma Wenfeng,Liu Hongxia,et al.CBM ground gathering and transportation technologies in the Qinshui Basin:status and prospect[J].Natural Gas Industry,2018,38(5):118-124.
[19]姚天鹏,赵磊,何世全,等.沁南夏店区块煤层气地面集输工艺优化及实践[J].中国煤层气,2015,12(2):23-26.Yao Tianpeng,Zhao Lei,He Shiquan,et al.Research on the optimization and practice of CBM surface gathering and transportation process in Xiadian Block of South Qinshui[J].China Coalbed Methane,2015,12(2):23-26.
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