新型双卡瓦可退式连续油管打捞工具的设计与有限元分析
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摘要
连续油管在作业过程中,由于承受拉伸、压缩、弯曲等复杂应力,断裂在油层套管中的情况时有发生,这会引起作业失效,影响油气正常生产。针对现有打捞工具卡不紧和不可退的缺点,设计了一种新型双卡瓦可退式连续油管打捞工具。应用有限元分析软件对内卡瓦进行了数值分析,验证了结构的合理性。这一工具整体采用流体驱动叶轮,由内外卡瓦联合作用,结构简单,液压控制可靠,对各种待打捞工具的适应性强,可以在提升打捞效率的同时大大降低作业成本。
During job procedure of the continuous reeled tubing, due to the complex stresses such as tensile, compression and bending, the fracture occurs occasionally in the production casing, which may cause the operation failure and affect the normal oil/gas production. Aiming at the shortcomings of the existing fishing tool i.e. loose-chucking and the non-retractable features, a new double-Kava retractable fishing tool for continuous reeled tubing was designed. The numerical analysis of the internal Kava was carried out by using the finite element analysis software to verify the rationality of the structure. The entire tool adopts a fluid-driven impeller with combined action from internal Kava and external Kava, it features a simple structure, reliable hydraulic control, and is highly adaptable to various tools to be salvaged. It can greatly reduce the operating cost while improving the fishing efficiency.
During job procedure of the continuous reeled tubing, due to the complex stresses such as tensile, compression and bending, the fracture occurs occasionally in the production casing, which may cause the operation failure and affect the normal oil/gas production. Aiming at the shortcomings of the existing fishing tool i.e. loose-chucking and the non-retractable features, a new double-Kava retractable fishing tool for continuous reeled tubing was designed. The numerical analysis of the internal Kava was carried out by using the finite element analysis software to verify the rationality of the structure. The entire tool adopts a fluid-driven impeller with combined action from internal Kava and external Kava, it features a simple structure, reliable hydraulic control, and is highly adaptable to various tools to be salvaged. It can greatly reduce the operating cost while improving the fishing efficiency.
引文
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[6]张荣军,苗芷芃,周传喜,等.连续管烂鱼头打捞工具的研发与应用[J].石油机械,2015,43(3):92-95.
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[8]王志坚,邓卫东,林忠超,等.水平井封隔器卡瓦的有限元分析及结构改进[J].石油钻采工艺,2013,35(4):78-81.
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[10]陈家元.完井封隔器卡瓦和胶筒力学行为分析及结构优化设计[D].西安:西安石油大学,2015.
[2]于东兵,包文德,马卫国,等.连续油管打捞技术专用工具研究现状及展望[J].石油机械,2007,35(1):45-47.
[3]付建华,王雯靓,陈国庆,等.穿心打捞连续油管技术与应用[J].钻采工艺,2016,39(5):17-18.
[4]马林虎.打捞各种井下落鱼的方法及工具[J].钻采工艺,1991,14(4):87-96.
[5]徐克彬,王燕声,李志勇,等.滑动卡瓦式连续油管打捞工具:201320509424.1[P].2014-02-12.
[6]张荣军,苗芷芃,周传喜,等.连续管烂鱼头打捞工具的研发与应用[J].石油机械,2015,43(3):92-95.
[7]徐健,管锋,周传喜,等.水平井液压助力式连续管落鱼打捞工具的研发[J].机械工程师,2016(4):15-18.
[8]王志坚,邓卫东,林忠超,等.水平井封隔器卡瓦的有限元分析及结构改进[J].石油钻采工艺,2013,35(4):78-81.
[9]刘汝福,吴晋霞.整体式卡瓦断裂过程的有限元分析[J].石油机械,2010,38(5):52-54.
[10]陈家元.完井封隔器卡瓦和胶筒力学行为分析及结构优化设计[D].西安:西安石油大学,2015.