水平井分段式冲砂洗井与吞吐采油技术研究
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摘要
水平井体积压裂开发模的研究与推广在致密油藏开发中取得了较高初产,但是采用万方液千方砂的开发模式不仅造成后期水平段易砂堵,且产量递减快,采收率低,经济效益差。致密油藏体积压裂水平井后期稳产开发已成为目前研究的热点和重点。本文根据水平井冲砂洗井与吞吐采油工艺原理,开展了致密油藏水平井分段式洗井与吞吐采油工艺技术可行性研究,实现了水平井冲砂洗井与吞吐采油两种工艺技术有机结合,不仅整体缩短了施工程序和时间,而且有效避免了水平井洗井过程中大井斜段易砂卡风险,实现了补充地层能量的目的,并在现场应用中取得较好效果。
The study and popularization of volume fracturing process for horizontal wells in tight oil reservoirs has achieved higher initial production. But old development model not only easy causes the sand plug in late horizontal well development stage, but also causes the rapid decline of oil production, low oil recovery rate and poor economic effect. The stabilization development of horizontal well has become the hotspot and key points of research in tight oil reservoirs. According to the theory of waterflood stimulation and well washing for horizontal wells, the feasibility study of segmented well washing and waterflood stimulation technology for horizontal wells in tight oil reservoirs was carried out. The technology not only can shorten the construction procedure and time, but also can effectively avoid the risk of sand sticking in the large inclined section during horizontal well washing process to realize the purpose of energy supply, and good results in the field application has been obtained.
The study and popularization of volume fracturing process for horizontal wells in tight oil reservoirs has achieved higher initial production. But old development model not only easy causes the sand plug in late horizontal well development stage, but also causes the rapid decline of oil production, low oil recovery rate and poor economic effect. The stabilization development of horizontal well has become the hotspot and key points of research in tight oil reservoirs. According to the theory of waterflood stimulation and well washing for horizontal wells, the feasibility study of segmented well washing and waterflood stimulation technology for horizontal wells in tight oil reservoirs was carried out. The technology not only can shorten the construction procedure and time, but also can effectively avoid the risk of sand sticking in the large inclined section during horizontal well washing process to realize the purpose of energy supply, and good results in the field application has been obtained.
引文
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[8]李晓辉.致密油注水吞吐采油技术在吐哈油田的探索.特种油气[4]藏,2015,22(4):144-146.
[9]钦伟,魏其远,杨元科,张倍强,等.体积压裂技术提高吞吐采油效果的探索与实践.科学管理,2017,5:288-290.
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[12]郭超英,吴华正,等.水平井冲砂工艺技术研究与应用.中国科技期刊数据库工业A,2018,(8).
[13]李爱芬,王士虎,王文玲,地层砂粒在液体中的沉降规律研究.油气地质与采收率,2001,8(1):70-73.
[14]顾文平,陈碧波,苏德胜,陈黎祥,等.水平井普通油管旋流连续冲砂工艺技术.石油机械,2007,35(9):104-106.
[15]薛娜.水平井洗井工艺技术研究.天然气技术,2007,1(4):31-34.
[16]张好林,李根生,黄中伟,田守嶒,等.水平井冲砂洗井流体流速研究.科学技术与工程,2014, 14(12):177-181.
[17]赖枫鹏,李治平,岑芳,黄志文,许进进,等.水平井水力冲砂最优工作参数计算.石油钻探技术,2007,35(1):69-71.
[18]李洪乾,杲传良,任耀秀,刘希圣,等.水平井钻井第二洗井区环空止动返速的计算.石油钻探技术,1995,23:27-30.
[2]吴忠宝,曾倩,李锦,王璐,等.体积改造油藏注水吞吐有效补充地层能量开发的新方式.油气地质与采收率,2017,24(5):78-83.
[3]倪俊,霍轶偲,等.极复杂断块单井注水吞吐采油机理研究.石油化工应用,2017,36(11):43-46.
[4]黄大志,向丹,等.注水吞吐采油机理研究[J].油气地质与采收率,2004,11(5):39-43.
[5]冯宴,胡书勇,何进,等.百色油田复杂断块油藏注水吞吐技术[J].石油地质与工程,2007,21(1):49-51.
[6]张钧涛.注水吞吐采油主要影响因素及其规律研究[J].中国石油和化工标准与质量,2011,(2):182-183.
[7]王鹏志.注水吞吐开发低渗透裂缝油藏探讨,特种油气藏,2006,13(2):46-55.
[8]李晓辉.致密油注水吞吐采油技术在吐哈油田的探索.特种油气[4]藏,2015,22(4):144-146.
[9]钦伟,魏其远,杨元科,张倍强,等.体积压裂技术提高吞吐采油效果的探索与实践.科学管理,2017,5:288-290.
[10]沈燕来,陈建武,等.冲砂洗井水力计算方法综述.水动力学研究与进展,1998,13(3):347-353.
[11]曲洪娜,黄中伟,李根生,夏强,宋先知,王海柱,等.水平井旋转射流冲砂洗井水力参数设计方法.石油钻探技术,2011,39(6):39-43.
[12]郭超英,吴华正,等.水平井冲砂工艺技术研究与应用.中国科技期刊数据库工业A,2018,(8).
[13]李爱芬,王士虎,王文玲,地层砂粒在液体中的沉降规律研究.油气地质与采收率,2001,8(1):70-73.
[14]顾文平,陈碧波,苏德胜,陈黎祥,等.水平井普通油管旋流连续冲砂工艺技术.石油机械,2007,35(9):104-106.
[15]薛娜.水平井洗井工艺技术研究.天然气技术,2007,1(4):31-34.
[16]张好林,李根生,黄中伟,田守嶒,等.水平井冲砂洗井流体流速研究.科学技术与工程,2014, 14(12):177-181.
[17]赖枫鹏,李治平,岑芳,黄志文,许进进,等.水平井水力冲砂最优工作参数计算.石油钻探技术,2007,35(1):69-71.
[18]李洪乾,杲传良,任耀秀,刘希圣,等.水平井钻井第二洗井区环空止动返速的计算.石油钻探技术,1995,23:27-30.