二氧化碳吞吐防杆卡剂研究与应用
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- 英文论文题名：Research and Application of Rod Anti-stuck Agent in the Course of CO_2 Huff and Puff Flooding
- 论文作者：李胜利 ; 王海静 ; 谢成靓
- 英文论文作者：Li Shengli ; Wang Haijing ; Xie Chengliang
- 年：2016
- 作者机构：大庆油田有限责任公司采油工程研究院;
- 论文关键词：二氧化碳 ; 不动管柱 ; 吞吐 ; 低温 ; 防杆卡
- 英文论文关键词：CO_2 ; without moving the pipe string ; huff and puff ; low temperature ; rod stuck prevention
- 会议召开时间：2016-12-01
- 会议录名称：《采油工程文集》2016年第4辑
- 英文会议录名称：Oil Production Engineering
- 语种：中文
- 分类号：TE39
- 学会代码：DQGY
- 学会名称：大庆油田有限责任公司采油工程研究院
- 页数：6
- 文件大小：1173k
- 原文格式：D
摘要
在不动管柱从油套环空注入二氧化碳吞吐施工过程中,二氧化碳产生相态变化吸热,井筒温度下降,油管中原油的重质组分析出沉积于油管内壁和抽油杆表面。当吞吐后油井恢复生产时,出现杆卡事故率较高,严重影响吞吐施工成功率。为此,开展了二氧化碳吞吐防杆卡剂研究。通过室内实验研究,研制出了针对性的防杆卡剂,其在-30℃条件下状态稳定、不凝、不冻。现场试验6口井,吞吐后抽油机正常启动,上下载荷变化正常、无冻井、无杆卡,工艺成功率达100%,该防杆卡剂的研制成功为提高二氧化碳吞吐现场施工成功率提供了有利的技术支撑。
In the process of CO_2 huff and puff flooding from the tubing-casing annulus without moving the pipe string,the phase of CO_2 would change with heat absorption,resulting in temperature reduction in the wellbore,hence the heavy component of crude oil could be precipitated and deposited on the inner wall of tubing and surface of sucker rod.When oil wells resume the production after huff and puff flooding,there is high accident rate in rod stuck,which affects the success rate of huff and puff flooding seriously.Therefore,the research on rod anti-stuck agent has been conducted in the course of CO_2 huff and puff flooding.Through the indoor experiment and research,an rod anti-stuck agent was developed with stable performance and no condensate or frozen at-30℃.After applying to the field tests of 6 wells by huff and puff flooding,oil pumping unit can be started in normal ways with normal change of upload and download charge,no frozen or rod stuck,and the success rate is up to 100%.It showed that the rod anti-stuck agent could provide favorable technical support for improving the success rate of the CO_2 huff and puff flooding at well site.
In the process of CO_2 huff and puff flooding from the tubing-casing annulus without moving the pipe string,the phase of CO_2 would change with heat absorption,resulting in temperature reduction in the wellbore,hence the heavy component of crude oil could be precipitated and deposited on the inner wall of tubing and surface of sucker rod.When oil wells resume the production after huff and puff flooding,there is high accident rate in rod stuck,which affects the success rate of huff and puff flooding seriously.Therefore,the research on rod anti-stuck agent has been conducted in the course of CO_2 huff and puff flooding.Through the indoor experiment and research,an rod anti-stuck agent was developed with stable performance and no condensate or frozen at-30℃.After applying to the field tests of 6 wells by huff and puff flooding,oil pumping unit can be started in normal ways with normal change of upload and download charge,no frozen or rod stuck,and the success rate is up to 100%.It showed that the rod anti-stuck agent could provide favorable technical support for improving the success rate of the CO_2 huff and puff flooding at well site.
引文
[1]粱福元,周洪钟,刘为民,等.CO2吞吐技术在断块油藏的应用[J].断块油气田,2001,8(4):55-57.
[2]任福生,刘艳平,段春凤,等.CO2吞吐在断块低渗透油藏的应用[J].断块油气田,2002,9(4):77-79.
[3]张国强,孙雷,孙良田,等.小断块油藏单井CO2吞吐强化采油注气时机及周期注入量优选[J].特种油气藏,2007,14(1):69-72.
[4]谈士海,周正平,刘伟,等.复杂断块油藏CO2吞吐试验及效果分析[J].石油钻采工艺,2002,24(4):56-59.
[5]刘炳官.CO2吞吐法在低渗透油藏的试验[J].特种油气藏,1996,3(2):44-50.
[6]鞠斌山,栾志安,郝永卯,等.CO2吞吐效果的影响因素分析[J].石油大学学报(自然科学版),2002,26(1):43-45.
[7]林日亿,李健,邰长彬,等.注液态CO2采油井筒热力分析[J].西安石油大学学报(自然科学版),2010,25(4):24-27.
[2]任福生,刘艳平,段春凤,等.CO2吞吐在断块低渗透油藏的应用[J].断块油气田,2002,9(4):77-79.
[3]张国强,孙雷,孙良田,等.小断块油藏单井CO2吞吐强化采油注气时机及周期注入量优选[J].特种油气藏,2007,14(1):69-72.
[4]谈士海,周正平,刘伟,等.复杂断块油藏CO2吞吐试验及效果分析[J].石油钻采工艺,2002,24(4):56-59.
[5]刘炳官.CO2吞吐法在低渗透油藏的试验[J].特种油气藏,1996,3(2):44-50.
[6]鞠斌山,栾志安,郝永卯,等.CO2吞吐效果的影响因素分析[J].石油大学学报(自然科学版),2002,26(1):43-45.
[7]林日亿,李健,邰长彬,等.注液态CO2采油井筒热力分析[J].西安石油大学学报(自然科学版),2010,25(4):24-27.