多煤层煤层气井分层控压合层排采技术及装备
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摘要
为解决多煤层煤层气开发目前面临的产气量难以叠加、储层伤害难以控制等问题,提出多煤层煤层气分层控压合层排采技术,该技术分为双泵三通道双煤层分层控压合层排采技术和双套管多煤层分层控压合层排采技术;并研制了配套的合层抽采泵、封隔器、排采监测设备等多煤层分层控压合层排采排采装置。实践结果表明:该技术可实现排采中用不同的动液面控制不同的煤层,提高煤层气排采效率和产气效果。
In order to solve the problems that the gas was difficult to be produced and the reservoir damage was difficult to be controlled from different seams at the same time during coalbed methane development,the technology of separate-layer pressure control and multilayer drainage for coalbed methane wells with multiple seams was proposed. The technology is divided into two separate-layer pressure control and multi-layer drainage technologies,the one is for double pump three channel double seam stratified and the other is for double casing multiple seams. The set of multiple seams separate-layer pressure control and multi-layer drainage device includes alloy layers drainage pump,packers and drainage monitoring equipment. The technology can control different coal seams with different dynamic levels in drainage,and can improve the efficiency of coalbed methane drainage and gas production.
In order to solve the problems that the gas was difficult to be produced and the reservoir damage was difficult to be controlled from different seams at the same time during coalbed methane development,the technology of separate-layer pressure control and multilayer drainage for coalbed methane wells with multiple seams was proposed. The technology is divided into two separate-layer pressure control and multi-layer drainage technologies,the one is for double pump three channel double seam stratified and the other is for double casing multiple seams. The set of multiple seams separate-layer pressure control and multi-layer drainage device includes alloy layers drainage pump,packers and drainage monitoring equipment. The technology can control different coal seams with different dynamic levels in drainage,and can improve the efficiency of coalbed methane drainage and gas production.
引文
[1]PASHIN J C,GROSHONG Jr R H.Structural control of coalbed methane production in Alabama[J].International Journal of Coal Geology,1998,38(1/2):89-113.
[2]李国富,田永东.煤层气井排水采气机理浅探[J].中国煤炭,2002,28(7):33-36.LI Guofu,TIAN yongdong.A tentative analysis of the mechanism of water discharge aided CBM extraction[J].China Coal,2002,28(7):33-36.
[3]崔金榜,李沛,马东民,等.煤层气水平井井筒煤粉迁移规律试验研究[J].煤炭科学技术,2016,44(5):74-78,176.CUI Jinbang,LI Pei,MA Dongmin,et al.Experiment study on migration law of pulverized coal in borehole of coalbed methane horizontal well[J].Coal Science and Technology,2016,44(5):74-78,176.
[4]李瑞,王生维,吕帅锋,等.煤层气排采过程中储层压降动态变化影响因素[J].煤炭科学技术,2017,45(7):93-99.LI Rui,WANG Shengwei,LYU Shuaifeng,et al.Dynamic varied influence factors of pressure drop in coal reservoir during coalbed methane drainage process[J].Coal Science and Technology,2017,45(7):93-99,39.
[5]田永东.试论煤层气地面开发的规模性[J].科技情报开发与经济,2005,15(13):163-165.TIAN Yongdong.Discussion on the ground developing scale of coal-bed methane(CBM)[J].Tech Information Development&Economy,2005,15(13):163-165.
[6]HARRISON S M,GENTZIS T,PAYNE M.Hydraulic,water quality,and isotopic characterization of Late Cretaceous-Tertiary Ardley coal waters in a key test-well,Pembina-Warburg exploration area,Alberta,Canada[J].Bulletin of Canadian Petroleum Geology,2006,54(3):238-260.
[7]杜彩霞,张遂安,刘程,等.煤层气规模开发条件下压力传播特征研究[J].煤炭科学技术,2016,44(12):179-183.DU Caixia,ZHANG Suian,LIU Cheng,et al.Study on reservoir pressure transmission feature of coalbed methane under condition of multi-well exploitation[J].Coal Science and Technology,2016,44(12):179-183.
[8]杨新乐,张永利,肖晓春.井间干扰对煤层气渗流规律影响的数值模拟[J].煤田地质与勘探,2009,37(4):26-29.YANG Xinle,ZHANG Yongli,XIAO Xiaochun.The numerical simulation of seepage rule of coalbed gas under the condition of interwell interference[J].Coal Geology&Exploitation,2009,37(4):26-29.
[9]刘升贵,郝耐,王建强.煤层气水平井降压漏斗扩展规律研究[J].辽宁工程技术大学学报:自然科学版,2012,31(1):8-11.LIU Shenggui,HAO Nai,WANG Jianqiang.Pressure drop funnel extension of coalbed methane horizontal well[J].Journal of Liaoning Technical University:Natural Science Edition,2012,31(1):8-11.
[10]刘世奇,桑树勋,李梦溪,等.沁水盆地南部煤层气井网排采压降漏斗的控制因素[J].中国矿业大学学报,2012,41(6):943-950.LIU Shiqi,SANG Shuxun,LI Mengxi,et al.Control of factors of coal-bed methane well depressurization cone under drainage well net-work in Southern Qinshui Basin[J].Journal of China University of Mining&Technology,2012,41(6):943-950.
[11]MAVOR M J,VAUGHN J E.Increased absolute permeability in the Sanjuan basin fruitl and formation[C]//Paper 9738Presented at the Proceeding of the International Coalbed Methane Symposium,University of Alabama,Tuscaloosa,1997:33-45.
[12]HARPALANI S,CHEN G.Influence of gas production induced volumetric strain on permeability of coal[J].International Journal of Geotechnical and Geological Engineering,1997,15:303-325.
[13]陈振宏,陈艳鹏,杨焦生,等.高煤阶煤层气储层动态渗透率特征及其对煤层气产量的影响[J].石油学报,2010,31(6):966-969.CHEN Zhenhong,CHEN Yanpeng,YANG Jiaosheng,et al.Reservoir dynamic permeability of high rank coalbed methane and its effect on the coalbed methane output[J].Acta Petrolei Sinica,2010,31(6):966-969.
[14]杜新锋.不同煤体结构煤储层煤层气排采中渗透率变化规律研究[J].煤矿安全,2015,46(6):8-11.DU Xinfeng.Study on permeability change law of coalbed methane in coal reservoir with different coal structure in drainage process[J].Safety in Coal Mines,2015,46(6):8-11.
[15]杜新锋.煤层气排采过程中渗透率变化规律及动液面控制研究[J].煤炭工程,2015,47(7):93-96.DU Xinfeng.Research on variation law of coal reservoir permeability and dynamic water level contror in coal bed methane drainage[J].Coal Engineering,2015,47(7):93-96.
[16]杜严飞,吴财芳,邹明俊,等.煤层气排采过程中煤储层压力传播规律研究[J].煤炭工程,2011,43(7):87-89.DU Yanfei,WU Caifang,ZOU Mingjun,et al.Study on reservoir pressure transmission law during gas mining and drainage process of coalbed methane well[J].Coal Engineering,2011,43(7):87-89.
[17]倪小明,苏现波,李广生.樊庄地区3#和15#煤层合层排采的可行性研究[J].天然气地球科学,2012,21(1):144-149.NI Xiaoming,SU Xianbo,LI guangsheng.Feasibility of multilayer drainage for No.3 and No.15 coal seams in the Fanzhuang Area[J].Natural Gas Geoscience,2012,21(1):144-149.
[18]李国彪,李国富.煤层气井单层与合层排采异同点及主控因素[J].煤炭学报,2012,37(8):1354-1358.LI Guobiao,LI Guofu.Study on the differences and main controlling factors of the coalbed methane wells between single layer and multi-layer drainage[J].Journal of China Coal Society,2012,37(8):1354-1358.
[19]傅雪海.我国煤层气勘探开发现存问题及发展趋势[J].黑龙江科技学院学报,2012,22(1):1-5.FU Xuehai.Existing problems and development trend of CBM exploration and development in China[J].Journal of Heilongjiang Institute of Science&Technology,2012,22(1):1-5.
[20]国建军,赵玉华.特种抽油泵及常用井下工具手册[M].北京:石油工业出版社,2009:35-36.
[2]李国富,田永东.煤层气井排水采气机理浅探[J].中国煤炭,2002,28(7):33-36.LI Guofu,TIAN yongdong.A tentative analysis of the mechanism of water discharge aided CBM extraction[J].China Coal,2002,28(7):33-36.
[3]崔金榜,李沛,马东民,等.煤层气水平井井筒煤粉迁移规律试验研究[J].煤炭科学技术,2016,44(5):74-78,176.CUI Jinbang,LI Pei,MA Dongmin,et al.Experiment study on migration law of pulverized coal in borehole of coalbed methane horizontal well[J].Coal Science and Technology,2016,44(5):74-78,176.
[4]李瑞,王生维,吕帅锋,等.煤层气排采过程中储层压降动态变化影响因素[J].煤炭科学技术,2017,45(7):93-99.LI Rui,WANG Shengwei,LYU Shuaifeng,et al.Dynamic varied influence factors of pressure drop in coal reservoir during coalbed methane drainage process[J].Coal Science and Technology,2017,45(7):93-99,39.
[5]田永东.试论煤层气地面开发的规模性[J].科技情报开发与经济,2005,15(13):163-165.TIAN Yongdong.Discussion on the ground developing scale of coal-bed methane(CBM)[J].Tech Information Development&Economy,2005,15(13):163-165.
[6]HARRISON S M,GENTZIS T,PAYNE M.Hydraulic,water quality,and isotopic characterization of Late Cretaceous-Tertiary Ardley coal waters in a key test-well,Pembina-Warburg exploration area,Alberta,Canada[J].Bulletin of Canadian Petroleum Geology,2006,54(3):238-260.
[7]杜彩霞,张遂安,刘程,等.煤层气规模开发条件下压力传播特征研究[J].煤炭科学技术,2016,44(12):179-183.DU Caixia,ZHANG Suian,LIU Cheng,et al.Study on reservoir pressure transmission feature of coalbed methane under condition of multi-well exploitation[J].Coal Science and Technology,2016,44(12):179-183.
[8]杨新乐,张永利,肖晓春.井间干扰对煤层气渗流规律影响的数值模拟[J].煤田地质与勘探,2009,37(4):26-29.YANG Xinle,ZHANG Yongli,XIAO Xiaochun.The numerical simulation of seepage rule of coalbed gas under the condition of interwell interference[J].Coal Geology&Exploitation,2009,37(4):26-29.
[9]刘升贵,郝耐,王建强.煤层气水平井降压漏斗扩展规律研究[J].辽宁工程技术大学学报:自然科学版,2012,31(1):8-11.LIU Shenggui,HAO Nai,WANG Jianqiang.Pressure drop funnel extension of coalbed methane horizontal well[J].Journal of Liaoning Technical University:Natural Science Edition,2012,31(1):8-11.
[10]刘世奇,桑树勋,李梦溪,等.沁水盆地南部煤层气井网排采压降漏斗的控制因素[J].中国矿业大学学报,2012,41(6):943-950.LIU Shiqi,SANG Shuxun,LI Mengxi,et al.Control of factors of coal-bed methane well depressurization cone under drainage well net-work in Southern Qinshui Basin[J].Journal of China University of Mining&Technology,2012,41(6):943-950.
[11]MAVOR M J,VAUGHN J E.Increased absolute permeability in the Sanjuan basin fruitl and formation[C]//Paper 9738Presented at the Proceeding of the International Coalbed Methane Symposium,University of Alabama,Tuscaloosa,1997:33-45.
[12]HARPALANI S,CHEN G.Influence of gas production induced volumetric strain on permeability of coal[J].International Journal of Geotechnical and Geological Engineering,1997,15:303-325.
[13]陈振宏,陈艳鹏,杨焦生,等.高煤阶煤层气储层动态渗透率特征及其对煤层气产量的影响[J].石油学报,2010,31(6):966-969.CHEN Zhenhong,CHEN Yanpeng,YANG Jiaosheng,et al.Reservoir dynamic permeability of high rank coalbed methane and its effect on the coalbed methane output[J].Acta Petrolei Sinica,2010,31(6):966-969.
[14]杜新锋.不同煤体结构煤储层煤层气排采中渗透率变化规律研究[J].煤矿安全,2015,46(6):8-11.DU Xinfeng.Study on permeability change law of coalbed methane in coal reservoir with different coal structure in drainage process[J].Safety in Coal Mines,2015,46(6):8-11.
[15]杜新锋.煤层气排采过程中渗透率变化规律及动液面控制研究[J].煤炭工程,2015,47(7):93-96.DU Xinfeng.Research on variation law of coal reservoir permeability and dynamic water level contror in coal bed methane drainage[J].Coal Engineering,2015,47(7):93-96.
[16]杜严飞,吴财芳,邹明俊,等.煤层气排采过程中煤储层压力传播规律研究[J].煤炭工程,2011,43(7):87-89.DU Yanfei,WU Caifang,ZOU Mingjun,et al.Study on reservoir pressure transmission law during gas mining and drainage process of coalbed methane well[J].Coal Engineering,2011,43(7):87-89.
[17]倪小明,苏现波,李广生.樊庄地区3#和15#煤层合层排采的可行性研究[J].天然气地球科学,2012,21(1):144-149.NI Xiaoming,SU Xianbo,LI guangsheng.Feasibility of multilayer drainage for No.3 and No.15 coal seams in the Fanzhuang Area[J].Natural Gas Geoscience,2012,21(1):144-149.
[18]李国彪,李国富.煤层气井单层与合层排采异同点及主控因素[J].煤炭学报,2012,37(8):1354-1358.LI Guobiao,LI Guofu.Study on the differences and main controlling factors of the coalbed methane wells between single layer and multi-layer drainage[J].Journal of China Coal Society,2012,37(8):1354-1358.
[19]傅雪海.我国煤层气勘探开发现存问题及发展趋势[J].黑龙江科技学院学报,2012,22(1):1-5.FU Xuehai.Existing problems and development trend of CBM exploration and development in China[J].Journal of Heilongjiang Institute of Science&Technology,2012,22(1):1-5.
[20]国建军,赵玉华.特种抽油泵及常用井下工具手册[M].北京:石油工业出版社,2009:35-36.