Research on Key Technology of Water-Swellable Packer
-
摘要: 针对常规封隔器在大尺寸及不规则井眼中使用可靠性较差的问题，开展了遇水膨胀封隔器技术研究。采用了测试遇水膨胀橡胶膨胀率和封隔能力等的方法，优选了遇水膨胀橡胶的配方：橡胶D1+70%吸水聚合物+20%补强剂A+40%补强剂C。通过室内试验分析了温度及盐溶液对遇水膨胀橡胶的影响规律，结果表明：随着温度的升高，遇水膨胀橡胶的膨胀率增大，但当温度高于120 ℃时，其膨胀率随温度升高而降低；盐溶液的离子强度越高，遇水膨胀橡胶的膨胀率越低。分析了遇水膨胀封隔器的膨胀密封机理，并采用有限元方法分析了遇水膨胀橡胶不同膨胀率下的封隔能力，发现遇水膨胀橡胶的膨胀率越大，封隔能力越强。现场应用表明，遇水膨胀封隔器能解决常规封隔器在大尺寸及不规则井眼中使用可靠性较差的问题。Abstract: Conventional packers are not reliable when they are set in big hole and irregular open hole.In this regard,the technology of water-swellable packer was studied.By testing the swelling rate and sealing capability of water-swellable rubber,an optimum formula of the special rubber was selected,namely,rubber D1+70% water absorbing polymer+20% reinforcing-agent A+40% reinforcing-agent C.The influences of temperature and salt solution on water-swellable rubber was analyzed in laboratory tests,indicated that the swelling rate went up with the temperature,but declined when the temperature was over 120 ℃,and the swelling rate decreased as the ion-strength of salt solution increased.Moreover,the sealing mechanism of the water-swellable packer was investigated,and the isolation behavior of such packer was analyzed by finite element method depending on swelling rate.It showed that the isolation capability was higher when the swelling rate of rubber element increases.Field applications showed that the water-swellable packer no longer has poor reliability that conventional packers have when they were set in big hole and irregular open hole.
-
Keywords:
- water-swellable packer /
- water absorbing polymer /
- water-swellable rubber /
- swelling rate /
- sealing
-
-
[1] 徐鑫, 魏新芳, 余金陵.遇油遇水自膨胀封隔器的研究与应用[J].石油钻探技术, 2009, 37(6):67-69. Xu Xin, Wei Xinfang, Yu Jinling.Researches and applications of oil/water expandable packers[J].Petroleum Drilling Techniques, 2009, 37(6):67-69. [2] 杨德锴, 马兰荣, 郭朝辉, 等.遇水膨胀橡胶的膨胀性能研究[J].弹性体, 2013, 23(1):80-84. Yang Dekai, Ma Lanrong, Guo Zhaohui, et al.Research of expansion capability of water-swellable rubber[J].China Elastomerics, 2013, 23(1):80-84. [3] 许婵婵, 余金陵, 徐鑫.遇水自膨胀封隔器专用橡胶的合成与性能分析[J].石油钻探技术, 2012, 40(3):38-42. Xu Chanchan, Yu Jingling, Xu Xin.Manufacture and properties of rubber for water swelling packer[J].Petroleum Drilling Techniques, 2012, 40(3):38-42. [4] 杨德锴, 杜鹏德, 薛占峰, 等.自膨胀封隔器封压性能技术分析[J].石油矿场机械, 2013, 42(2):59-62. Yang Dekai, Du Pengde, Xue Zhanfeng, et al.Analysis of sealing property for self-expandable packer[J].Oil Field Equipment, 2013, 42(2):59-62. [5] 刘阳, 马兰荣, 郭朝辉, 等.自膨胀封隔器技术在完井作业中的应用[J].石油矿场机械, 2012, 41(3):76-81. Liu Yang, Ma Lanrong, Guo Zhaohui, et al.Researches and applications on expandable packers in well completion[J].Oil Field Equipment, 2012, 41(3):76-81. -
期刊类型引用(6)
1. 彭梓俊，殷金周，李明明，冯岩. 自膨胀封隔器的研制现状及展望. 山东石油化工学院学报. 2023(04): 73-78 . 
百度学术
2. 魏然，刘成杰. BZ34-5油田复杂地层低效井治理工艺技术. 探矿工程(岩土钻掘工程). 2019(06): 47-52 . 百度学术
3. 樊继强，王委，陈小元，黄志安. 苏北盆地小井眼侧钻井关键技术研究与应用. 石油钻探技术. 2019(05): 22-27 . 本站查看
4. 党洪艳. 套管外漏井可洗井自胀封堵漏工艺技术研究. 化学工程与装备. 2018(02): 191-194 . 百度学术
5. 周大志，刘加杰，吴英. 自膨胀封隔器的技术现状和发展趋势. 机械研究与应用. 2018(03): 214-216+222 . 百度学术
6. 秦金立，陈作，杨同玉，戴文潮，吴春方. 鄂尔多斯盆地水平井多级滑套分段压裂技术. 石油钻探技术. 2015(01): 7-12 . 本站查看
其他类型引用(1)
计量
- 文章访问数: 3255
- HTML全文浏览量: 88
- PDF下载量: 3727
- 被引次数: 7
下载:
