超稠油水平井蒸汽驱技术参数优化研究
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摘要
针对胜利油田Z区块水平井蒸汽吞吐开发采收率低、井间剩余油较多的问题,首选蒸汽驱作为蒸汽吞吐后的接替方式来进一步提高原油采收率。运用数值模拟方法结合现场实际,对Z区块水平井蒸汽驱井网形式、转驱时机、注汽干度等技术参数进行优选。实施过程中使用了30 t/h超高干度注汽锅炉,出口注汽干度可高达95%以上,保证了注汽井的注汽强度为1.6m3/(d·km2·m)左右。先导试验区7口水平井蒸汽驱见到明显效果,平均日产油增加了4~8 t/d。研究成果为稠油油藏水平井蒸汽驱在胜利油田的推广提供了技术依据。
The application of steam huff and puff with horizontal wells in Block Z in Shengli Oilfield had the problem of low oil recovery and much inter- well residual oil. Steam flooding is preferred to replace the steam huff and puff to further improve oil recovery. Combining with field practices,numerical simulation is applied to optimize the technical parameters,including well pattern,flooding conversion time and steam quality,for steam flooding in Block Z with horizontal wells. During the application,steam injection boiler with high steam quality of 30 t / h was applied,which could generate high outlet steam quality of over 95%,guaranteeing the steam injection intensity of steam injection wells reaching about 1 ·6 m3/( d·km2·m).Steam flooding applied in 7 horizontal wells in pilot area achieved obvious results,increasing average daily oil production by 4- 8 t / d. This research result provides a technical basis for generalized application of steam flooding with horizontal wells in heavy oil reservoirs in Shengli Oilfield.
The application of steam huff and puff with horizontal wells in Block Z in Shengli Oilfield had the problem of low oil recovery and much inter- well residual oil. Steam flooding is preferred to replace the steam huff and puff to further improve oil recovery. Combining with field practices,numerical simulation is applied to optimize the technical parameters,including well pattern,flooding conversion time and steam quality,for steam flooding in Block Z with horizontal wells. During the application,steam injection boiler with high steam quality of 30 t / h was applied,which could generate high outlet steam quality of over 95%,guaranteeing the steam injection intensity of steam injection wells reaching about 1 ·6 m3/( d·km2·m).Steam flooding applied in 7 horizontal wells in pilot area achieved obvious results,increasing average daily oil production by 4- 8 t / d. This research result provides a technical basis for generalized application of steam flooding with horizontal wells in heavy oil reservoirs in Shengli Oilfield.
引文
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[12]曹立迎,蔺高敏,宋传真,等.底水油藏水平井水淹规律经验模型[J].断块油气田,2012,19(3):323-326.
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[19]汪全林,廖新武,赵秀娟,等.特低渗油藏水平井与直井注采系统差异研究[J].断块油气田,2012,19(5):608-611,625.
[20]刘新.轻质油藏蒸汽驱提高采收率技术现状及趋势[J].大庆石油地质与开发,2012,31(1):138-144.
[21]程忠钊,李春兰,黄世军.稠油油藏水平井蒸汽驱合理井网形式研究[J].特种油气藏,2009,16(3):55-59.
[22]程紫燕,周勇.水平井蒸汽驱技术政策界限优化研究[J].石油天然气学报,2013,35(8):139-143.
[23]宋杨.薄层稠油水平井蒸汽驱优化设计[J].断块油气田,2013,20(2):239-245.
[24]高永荣,闫存章,刘尚奇,等.利用蒸汽超覆作用提高注蒸汽开发效果[J].石油学报,2007,28(4):91-94.
[25]袁忠超.水平井蒸汽驱相似准则研究[D].东营:中国石油大学,2011.
[26]邢玉兵.扶余油田蒸汽驱技术应用与评价[J].中外能源,2011,16(5):68-70.
[2]万仁溥.中国不同类型油藏水平井开采技术[M].北京:石油工业出版社,1997:41-57.
[3]张义堂,李秀峦,张霞.稠油蒸汽驱方案设计及跟踪调整四项基本准则[J].石油勘探与开发,2008,35(6):715-719.
[4]陈凤君,张丙星,贾胜彬,等.浅薄特超稠油吞吐中后期蒸汽驱可行性研究[J].西部探矿工程,2003,84(5):39-56.
[5]Huang W S,Hight M A.Evaluation of steamflood processes with horizontal wells[J].SPE Journal,1989,4(1):69-76.
[6]庞进,刘洪,李泓涟.油藏水驱后蒸汽驱增油机理实验[J].油气地质与采率,2013,20(4):72-78.
[7]周英杰.胜利油区水驱普通稠油油藏注蒸汽提高采收率研究与实践[J].石油勘探与开发,2006,33(4):479
[8]石启新,方开璞.注蒸汽开发经济极限油汽比及经济可采储量的计算方法及应用[J].石油勘探与开发,2001,28(4):97-98.
[9]王德龙,喻高明,张倩.井楼油田水平井蒸汽辅助重力驱油数值模拟[J].石油天然气学报(江汉石油学院学报),2008,30(2):564-566.
[10]赵田,高亚丽,乙广燕,等.水平井蒸汽辅助重力驱数学模型的建立及求解方法[J].大庆石油地质与开发,2005,24(4):40-41.
[11]关文龙,吴淑红,蒋有伟,等.高含水油藏转注蒸汽三维物理模拟研究[J].石油学报,2009,30(3):404-408.
[12]曹立迎,蔺高敏,宋传真,等.底水油藏水平井水淹规律经验模型[J].断块油气田,2012,19(3):323-326.
[13]张方礼,赵洪岩.辽河油田稠油注蒸汽开发技术[M].北京:石油工业出版社,2007:7-51.
[14]Rial R M.3D thermal simulation using a horizontal wellbore for steamflooding[C].SPE13076,1984:312-323.
[15]Doscher T M,Kostura J A.Improving the steam drive:physical model studies of inert gas injection and horizontal wells[C].SPE17448,1988:23-25.
[16]刘高华.水平井技术在冷家油田二次开发中的应用前景[J].特种油气藏,2007,14(6):32-35.
[17]赵洪岩.辽河中深层稠油蒸汽驱技术研究与应用[J].石油钻采工艺,2009,31(增刊1):110-114.
[18]刘文章.稠油注蒸汽热采工程[M].北京:石油工业出版社,1997:35-39.
[19]汪全林,廖新武,赵秀娟,等.特低渗油藏水平井与直井注采系统差异研究[J].断块油气田,2012,19(5):608-611,625.
[20]刘新.轻质油藏蒸汽驱提高采收率技术现状及趋势[J].大庆石油地质与开发,2012,31(1):138-144.
[21]程忠钊,李春兰,黄世军.稠油油藏水平井蒸汽驱合理井网形式研究[J].特种油气藏,2009,16(3):55-59.
[22]程紫燕,周勇.水平井蒸汽驱技术政策界限优化研究[J].石油天然气学报,2013,35(8):139-143.
[23]宋杨.薄层稠油水平井蒸汽驱优化设计[J].断块油气田,2013,20(2):239-245.
[24]高永荣,闫存章,刘尚奇,等.利用蒸汽超覆作用提高注蒸汽开发效果[J].石油学报,2007,28(4):91-94.
[25]袁忠超.水平井蒸汽驱相似准则研究[D].东营:中国石油大学,2011.
[26]邢玉兵.扶余油田蒸汽驱技术应用与评价[J].中外能源,2011,16(5):68-70.