CN101194083A - 环状封隔器 - Google Patents

环状封隔器 Download PDF

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Publication number
CN101194083A
CN101194083A CNA2006800152173A CN200680015217A CN101194083A CN 101194083 A CN101194083 A CN 101194083A CN A2006800152173 A CNA2006800152173 A CN A2006800152173A CN 200680015217 A CN200680015217 A CN 200680015217A CN 101194083 A CN101194083 A CN 101194083A
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annular packer
packer device
sleeve
pipe
annular
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CN101194083B (zh
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鲁内·弗里尔
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Halliburton Energy Services Inc
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Halliburton Energy Services Inc
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/12—Packers; Plugs
    • E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means

Abstract

一种环状封隔器装置(1)，其中环状封隔器(1)在处于内本体(8)和外边界(12)之间的环状空间(6)内膨胀，而且，环状封隔器(1)沿内本体(8)和外边界(12)的至少其中之一密封地移动。

Description

环状封隔器
技术领域
本发明涉及环状封隔器(packer)，尤其涉及用于钻孔中的环状封隔器，该封隔器在钻孔中密封地、可移动地连接到至少一个形成环状空间的本体上。
背景技术
能够膨胀的环状封隔器在钻孔中相当大程度上用于不同的密封和分隔目的。对环状封隔器来说，一般要连接到管上，典型地连接至生产管或注入管，所述管伸入钻孔内，之后环状封隔器膨胀抵靠于成形壁(formation Wall)或抵靠于套管(casing)。
环状封隔器可以是气动膨胀或液压膨胀，可以利用流体而扩展或通过流体扩散而膨胀。如果在安装环状封隔器之后执行操作，管承受温度变化，管内会出现相当大的轴向力。密封抵靠于成形壁的环状封隔器相对松开对成形壁的锚固，从而相对于成形壁移动，失去其密封效果。
根据现有技术，管可以设置有胀缩联轴节，胀缩联轴节设置为吸收管内的轴向膨胀或收缩。最通常地，胀缩联轴节形成为伸缩接头，在伸缩接头内，管本体在另一管本体内密封地移动。
经验表明，这种类型的接头具有若干缺陷。当使用胀缩联轴节时，很难判定联轴节是处在缩回位置还是处在延伸位置，因此就存在联轴节过度延伸的风险，联轴节内因此会出现泄漏。如果有裂缝，相邻的装备也会过载，这会使相对大范围的修理工作成为必须。
发明内容
本发明的目的是矫正或减小现有技术中的至少一个缺陷。
通过下面的说明和后附的权利要求书中具体说明的特征，根据本发明来实现该目的。
本发明包括环状封隔器，该环状封隔器在处于内本体和外边界之间的环状空间内能够膨胀。此外，该环状封隔器沿内本体和外边界的至少其中之一密封地移动。典型地，内本体由在钻孔的至少部分深度上延伸的管形成，其中外边界由钻孔的成形壁或套管形成。
能够膨胀的环状封隔器优选地包括套筒，根据其本身公知的技术，该套筒由能够膨胀的材料环绕。能够膨胀的材料密封地连接到套筒。
环绕管的套筒能够沿管移动并设置有密封件，该密封件设置为防止流体在管和套筒之间流动。
至少部分套管在径向能够膨胀是有利的，以进一步将压力供给到能够抵靠成形壁或抵靠套管的膨胀材料。
套筒的径向膨胀可以是弹性的或塑性的，可能会以其本身公知的方式机械地或液压地实现。
在可替换的实施例中，环状封隔器可以在没有上述套筒的情况下形成，但需要有环绕管的加强件。在该实施例中，环状封隔器在管上可松开地移动。在该实施例中还有，环状封隔器可以设置有密封件，该密封件设置为密封于环状封隔器和管之间。
当使用根据本发明的环状封隔器时，减小了管上的由环状封隔器连接到成形壁或套管上引起的轴向力。由此环状封隔器承受仅仅微小程度的、来自管的轴向力，因此在所研究的环状空间内保持可靠的密封。
附图说明
下面描述非限制性的优选实施例的示例，该实施例示于附图中，在附图中：
图1示意性地示出根据本发明的环状封隔器，在该图中，封隔器已经安装在钻孔内，且环状封隔器沿管密封地可移动。
图2示出与图1中相同的环状封隔器，但环状封隔器的套筒已经膨胀以进步将径向压力供给到抵靠于成形壁的环状封隔器上；以及
图3示出图1中的环状封隔器的可替换实施例。
具体实施方式
在图中，附图标记1表示能够膨胀的环状封隔器，该封隔器包括套筒2和膨胀材料4，膨胀材料4环绕并连接到套筒2上。在该优选实施例中，膨胀材料4由可扩展的材料形成，例如SBR(苯乙烯/丁二烯橡胶)。
环状封隔器1位于环状空间6内，环状空间6由管状的内本体8和钻孔10的成形壁状的的外边界12来限定。环状封隔器1已经膨胀并密封地抵靠在成形壁12上。
套筒2可移动地环绕管8。密封件14防止流体在套筒2和管8之间流动。
如果管8的长度由于例如热或冷发生变化，管8可以在环状封隔器内移动，而不会使抵靠于成形壁12的环状封隔器1的密封产生中断。
在可替换实施例中，参见图2，套筒2在其部分长度上径向膨胀以进一步将径向力供给到抵靠成形壁12的膨胀材料4上。
在另一实施例中，套筒2已经由环绕管8的加强件16代替。如果期望，在该实施例中，密封件1 4可以位于膨胀材料4和管8之间。在该实施例中，环状封隔器1优选地在管8上可释放地移动。

Claims (7)

1.一种环状封隔器装置(1)，其中该环状封隔器(1)在处于内本体(8)和外边界(12)之间的环状空间(6)内能够膨胀，其特征在于，该环状封隔器(1)沿该内本体(8)或该外边界(12)的至少其中之一密封地移动。
2.如权利要求1所述的装置，其特征在于，该环状封隔器(1)包括被膨胀材料(4)环绕的套筒(2)。
3.如权利要求2所述的装置，其特征在于，该膨胀材料(4)密封地连接到该套筒(2)上。
4.如权利要求1所述的装置，其特征在于，在该套筒(2)和该内本体(8)之间设置密封件(14)，密封件(14)设置成防止流体在该内本体(8)和该套筒(2)之间流动。
5.如权利要求1所述的装置，其特征在于，套筒(2)的至少一部分能够沿径向膨胀。
6.如权利要求1所述的装置，其特征在于，该环状封隔器(1)包括加强件(16)和膨胀材料(4)。
7.如权利要求1所述的装置，其特征在于，该环状封隔器(1)在该内本体(8)上可松开地移动。
CN200680015217.3A 2005-05-02 2006-04-28 环状封隔器 Expired - Fee Related CN101194083B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NO20052144A NO324087B1 (no) 2005-05-02 2005-05-02 Anordning ved ringromspakning
NO20052144 2005-05-02
PCT/NO2006/000160 WO2006118470A1 (en) 2005-05-02 2006-04-28 Annular packer device

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Publication Number Publication Date
CN101194083A true CN101194083A (zh) 2008-06-04
CN101194083B CN101194083B (zh) 2014-11-05

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US (1) US7891431B2 (zh)
EP (1) EP1877645A4 (zh)
CN (1) CN101194083B (zh)
AU (1) AU2006241577B2 (zh)
BR (1) BRPI0610474A2 (zh)
CA (1) CA2606139C (zh)
EA (1) EA010845B1 (zh)
NO (1) NO324087B1 (zh)
WO (1) WO2006118470A1 (zh)

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CN104088587A (zh) * 2013-04-01 2014-10-08 中国石油化工股份有限公司 用于钻井过程中防塌的可变径套管
CN104246116A (zh) * 2012-03-30 2014-12-24 韦尔泰克有限公司 具有密封件的环状屏障
CN104781501A (zh) * 2012-08-28 2015-07-15 哈里伯顿能源服务公司 可膨胀的回接密封组件
CN105344705A (zh) * 2015-11-27 2016-02-24 上海岩土工程勘察设计研究院有限公司 一种用于污染场地原位修复的注入装置

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CN104246116A (zh) * 2012-03-30 2014-12-24 韦尔泰克有限公司 具有密封件的环状屏障
US9963952B2 (en) 2012-03-30 2018-05-08 Welltec A/S Annular barrier with a seal
CN104781501A (zh) * 2012-08-28 2015-07-15 哈里伯顿能源服务公司 可膨胀的回接密封组件
CN104088587A (zh) * 2013-04-01 2014-10-08 中国石油化工股份有限公司 用于钻井过程中防塌的可变径套管
CN104088587B (zh) * 2013-04-01 2016-06-22 中国石油化工股份有限公司 用于钻井过程中防塌的可变径套管
CN105344705A (zh) * 2015-11-27 2016-02-24 上海岩土工程勘察设计研究院有限公司 一种用于污染场地原位修复的注入装置

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AU2006241577B2 (en) 2011-03-31
EP1877645A4 (en) 2014-08-13
CA2606139C (en) 2010-07-20
EA010845B1 (ru) 2008-12-30
CA2606139A1 (en) 2006-11-09
NO324087B1 (no) 2007-08-13
EA200702152A1 (ru) 2008-04-28
EP1877645A1 (en) 2008-01-16
BRPI0610474A2 (pt) 2012-10-30
NO20052144D0 (no) 2005-05-02
CN101194083B (zh) 2014-11-05
NO20052144L (no) 2006-11-03
US20080308283A1 (en) 2008-12-18
WO2006118470A1 (en) 2006-11-09
US7891431B2 (en) 2011-02-22
AU2006241577A1 (en) 2006-11-09

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