基于纳米流控系统的超弹套管保护套结构原理与性能试验
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摘要
针对套管承受非均匀载荷及压力温度变化引起的气窜问题,利用纳米流控能量吸收/转换系统所具有的独特的温变压变特性,提出了在套管外包覆超弹套管保护套的方法,介绍了超弹套管保护套的结构和原理,并通过压力-体积试验和温变试验测试了MFI型沸石-水流控系统的性能。压力-体积试验发现,MFI型沸石-水流控系统中的功能流体(水)随外界压力与温度的变化自发流入或流出纳米多孔介质的孔道,通过体积变化平衡外压或温度的变化,降低套管失效概率与气窜风险。温变试验发现,当温度在30～75℃之间变化时,该套管保护套的压力阈值随温度升高而降低,其形变能力随温度升高而增强,具有优异的温变工作特性。研究表明,套管外包覆合适超弹套管保护套,利用其温度和压力变化下良好的变形协调能力,可有效解决复杂工况下套管外气窜的问题。
In order to relieve the non-uniform loading on casing and solve gas channeling problems from pressure and temperature changes,this paper presents a super elastic casing protective jacket.It is a nanofluidic system-based jacket for the casing that has unique volume changing characteristic under varied temperature and pressure.The scientific principles underpinning the jacket design are found in nanofluid structures.For example,the MFI zeolite-water system is taken as an example filling formula and the performance is evaluated from pressure-volume test and temperature change test.The pressure-volume test shows that the functional fluid(water)can flow into and out of the nanopores spontaneously with the change of external pressure and temperature.Such flow balances the change of external pressure and temperature via volume change and helps to reduce the risk of casing failure and gas channeling.In the temperature change test,the casing protective jacket exhibits excellent characteristics.The threshold pressure decreases with the rising of environmental temperature,and its deformability increases with the rising of environmental temperature between 30 to 75 ℃.Studies indicates that gas channeling under complex conditions can be effectively solved by protective jacket with appropriate formula based on the strength of its deformation coordination ability under pressure and temperature changing.
In order to relieve the non-uniform loading on casing and solve gas channeling problems from pressure and temperature changes,this paper presents a super elastic casing protective jacket.It is a nanofluidic system-based jacket for the casing that has unique volume changing characteristic under varied temperature and pressure.The scientific principles underpinning the jacket design are found in nanofluid structures.For example,the MFI zeolite-water system is taken as an example filling formula and the performance is evaluated from pressure-volume test and temperature change test.The pressure-volume test shows that the functional fluid(water)can flow into and out of the nanopores spontaneously with the change of external pressure and temperature.Such flow balances the change of external pressure and temperature via volume change and helps to reduce the risk of casing failure and gas channeling.In the temperature change test,the casing protective jacket exhibits excellent characteristics.The threshold pressure decreases with the rising of environmental temperature,and its deformability increases with the rising of environmental temperature between 30 to 75 ℃.Studies indicates that gas channeling under complex conditions can be effectively solved by protective jacket with appropriate formula based on the strength of its deformation coordination ability under pressure and temperature changing.
引文
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[16] CHEN Xi,SURANI F B,KONG X,et al.Energy absorption performance of steel tubes enhanced by a nanoporous material functionalized liquid[J].Applied Physics Letters,2006,89(24):241918.
[2] 熊健.浅谈环空窜流的问题[J].内蒙古石油化工,2010,36(21):91-93.XIONG Jian.Research on the problem of fluid channeling[J].Inner Mongulia Petrochemical Industry,2010,36(21):91-93.
[3] 步玉环,尤军,姜林林.触变性水泥浆体系研究与应用进展[J].石油钻探技术,2009,37(4):110-114.BU Yuhuan,YOU Jun,JIANG Linlin.Research and application of thixotropic cement slurry[J].Petroleum Drilling Techniques,2009,37(4):110-114.
[4] 顾军,高德利,何湘清,等.泡沫水泥固井技术研究[J].天然气工业,2003,23(增刊1):78-80.GU Jun,GAO Deli,HE Xiangqing,et al.Study on cementing technology of foamed cement[J].Natural Gas Industry,2003,23(supplement 1):78-80.
[5] HABERMAN J P,WOLHART S L.Reciprocating cement slurries after placement by applying pressure pulses in the annulus[R].SPE 37619,1997.
[6] 彭雷.非渗透性聚合物胶乳水泥浆技术研究[D].东营:中国石油大学(华东),2009.PENG Lei.Study of impermeability polymer latex cementing slurry system[D].Dongying:China University of Petroleum(Huadong),2009.
[7] 丁士东,张卫东.国内外防气窜固井技术[J].石油钻探技术,2002,30(5):35-38.DING Shidong,ZHANG Weidong.Domestic & oversea cementing techniques of gas-channeling prevention[J].Petroleum Drilling Techniques,2002,30(5):35-38.
[8] 杨海席.国内外防气窜固井技术研究[J].石化技术,2017,24(12):99.YANG Haixi.Gas-channeling prevention cementing technology[J].Petrochemical Industry Technology,2017,24(12):99.
[9] 李早元,胡光辉,刘健,等.碳酸盐岩选择性固井管外封隔器失效原因探讨[J].石油钻采工艺,2014,42(1):100-103.LI Zaoyuan,HU Guanghui,LIU Jian,et al.Discussion on failure cause of the external casing packer in carbonate selective cementing technology[J].Oil Drilling & Production Technology,2014,42(1):100-103.
[10] 张言杰,宋本岭,崔军,等.水泥浆充填管外封隔器技术及其应用[J].石油钻探技术,2003,31(2):27-28.ZHANG Yanjie,SONG Benling,CUI Jun,et al.Packing external casing packer with cement slurry[J].Petroleum Drilling Techniques,2003,31(2):27-28.
[11] 练章华,蒋洪,李文魁.顶部水泥脉冲振动的理论研究[J].石油钻采工艺,2000,22(3):10-12,83.LIAN Zhanghua,JIANG Hong,LI Wenkui.Theoretical study of top cement pulsation[J].Oil Drilling & Production Technology,2000,22(3):10-12,83.
[12] LIU Hailong,CAO Guoxin.Super energy absorption system based on nanofluidic glycerol solution[J].Journal of Physical Chemistry C,2014,118(43):25223-25233.
[13] HAN A,QIAO Y.A volume-memory liquid[J].Applied Physics Letters,2007,91(17):173123.
[14] ZHANG Yafei,LI Na,LUO Rui,et al.Experimental study on thermal effect on infiltration mechanisms of glycerol into ZSM-5 zeolite under cyclic loadings[J].Journal of Physics D:Applied Physics,2016,49(2):025303.
[15] SUN Yueting,LI Yibing,ZHAO Cang,et al.Crushing of circular steel tubes filled with nanoporous-materials-functionalized liquid[J].International Journal of Damage Mechanics,2018,27(3):439-450.
[16] CHEN Xi,SURANI F B,KONG X,et al.Energy absorption performance of steel tubes enhanced by a nanoporous material functionalized liquid[J].Applied Physics Letters,2006,89(24):241918.