CN1989312A - 用于在过压下膨胀本体的方法和装置 - Google Patents
用于在过压下膨胀本体的方法和装置 Download PDFInfo
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- CN1989312A CN1989312A CNA2005800166542A CN200580016654A CN1989312A CN 1989312 A CN1989312 A CN 1989312A CN A2005800166542 A CNA2005800166542 A CN A2005800166542A CN 200580016654 A CN200580016654 A CN 200580016654A CN 1989312 A CN1989312 A CN 1989312A
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 47
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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
- E21B33/127—Packers; Plugs with inflatable sleeve
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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
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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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
Abstract
用于在过压下膨胀本体(10,22)的方法和装置,其中填满流体的空腔使本体膨胀,该本体用带有大量空腔的材料(12,24)制成,并在放置到过压区域中时受到挤压。
Description
技术领域
本发明涉及在过压下膨胀本体的方法。尤其是,涉及用弹性材料制成的本体的膨胀,该弹性材料具有大量封闭空腔,该材料允许流体通过材料扩散并进入空腔。该方法尤其适合于在地面中的操作,其中这类本体在下降到期望位置时,受到现有过压挤压,然后流体一段时间之后扩散通过材料并进入空腔。或者,在插入到升高压力的区域中期间,空腔打开,并在挤压中保持。本发明还包括用于实现方法的装置。
背景技术
这类本体可以具有数种应用,例如作为地下井中的环形封隔器。在本描述中,为了说明操作,以这种应用作为出发点。该例子不会以任何方式将本体的使用局限到该例子。
利用开放孔中的砂筛完成油井是用于完成储层的简单可靠的方法。油井通常穿透具有不同产品属性的地层。这些不同属性可能导致不希的井液流过砂筛,并进一步流入生产管。
于是,期望关闭井液流入的区域。该关闭必须在砂筛和井孔之间的环面中进行。
根据现有技术,这种关闭可以利用例如可充气环形封隔器实现,该封隔器放置在期望位置处,然后利用较复杂的设备启动。已经发现,通过使用这类封隔器,有时难以获得耐压密闭性。
挪威(NO)专利312478公开了一封隔器,它用可膨胀材料制成。在封隔器已经放置在期望位置处之后,封隔器的材料吸收井液,从而膨胀,直到密封环面为止。在某些井中,例如当产生干燥气体时,可能难以实现封隔器材料的充分膨胀。
发明内容
本发明具有改善现有技术的缺陷的目的。
根据本发明,该目的通过下面和所附权利要求中说明的特征实现。
通过将用带有大量封闭空腔的弹性材料制成的本体放置在存在过压的区域中,该材料允许流体通过材料扩散到空腔中,尤其是通过空腔的体积减小,从而材料的体积减小,该材料将受到挤压。
随着时间的过去,周围流体通过材料扩散到空腔中,从而本体膨胀到其基本初始的尺寸,可能直到相邻本体防止其进一步膨胀为止。
或者,该弹性材料可以用多个开放空腔形成,该材料利用例如挤压材料保持挤压,从而空腔在材料插入到压力升高区域中期间至少部分受到挤压。在材料已经放置到所述区域中之后,材料从其挤压状态释放,从而流体流入到材料的空腔中。从而,该材料膨胀到其基本初始的尺寸。
这类本体也适合于水井和干气井中的应用,其中膨胀材料只可用于有限的程度。
附图说明
下面描述了可在附图中看到的优选方法和实施例的非限制性例子,其中:
图1示出了在地下井中带有砂筛的生产管,其中设置有本发明所述的环形封隔器,以限制砂筛的进入面积;
图2示出了放大的图1的剖视图;
图3示出了可膨胀管,它在外部设置有发生膨胀之前的压缩的可膨胀材料套管;及
图4示出了可膨胀管和材料的膨胀发生之后与图3相同的管。
具体实施方式
在图中,附图标记1表示储层2中的地下井。包括砂筛6的生产管4放置在地下井1中。在图1中用箭头8表示的井液从储层2通过砂筛6流入到生产管4中。地下井1因井的液柱的高度而形成过压的区域。
为了关闭井液从相邻区域流入到生产管4中,已经设置环形封隔器10。
参见图2,该环形封隔器10用带有大量封闭空腔14的弹性材料12制成,该材料允许井液通过材料12扩散到空腔14中。该材料12可以是例如丁腈橡胶。该材料12可以设置有一个或多个加强部分16,例如以纤维布的形式。
环形封隔器10形成有比将进行填充的开口的横向尺寸略大的横向尺寸。当环形封隔器10进入地下井1中时,材料的空腔14由于增大的静压而受到压缩。从而,环形封隔器10可以很容易向前移动到期望位置。
流体通过材料12向材料12的空腔14中的扩散将马上开始。从而,空腔14受到填充,使得空腔14中的压力将大致等于环形封隔器10处的常压。从而,环形封隔器10将试图保持其初始形状。如果地下井的直径小于环形封隔器10的初始直径,则环形封隔器10将紧紧地靠在地下井1的构造壁18上,或者如果地下井1加套,则靠在未示出的套上。
在备选实施例中,参见图3和4,可膨胀管20设置有用具有开放孔状空腔的材料24制成的环形套22。在插入到地下井1中之前,利用环形预加载材料26挤压套22的材料24。该预加载材料26可以用例如纤维布制成。
在可膨胀管20已经放置到期望位置之后,可膨胀管20膨胀,从而预加载材料26破裂。
然后,通过流入到材料24的空腔中的流体进行套22的膨胀,从而套22膨胀到其初始形状。
Claims (6)
1.用于在过压下膨胀本体(10,22)的方法,其中该本体(10,22)由带有大量空腔的材料(12,24)制成,并且当放置到过压区域中时,该本体(10,22)受到挤压,其特征在于,填满流体的空腔使本体(10,22)膨胀。
2.如权利要求1所述的方法,其特征在于,本体(10,22)放置在过压区域(1)中,此后本体(10,22)中的流体通过弹性材料(12)扩散到空腔(14)中,该本体由带有大量封闭空腔(14)的弹性材料(12)制成,该材料(12)允许流体通过材料(12)扩散到空腔(14)中。
3.如权利要求1所述的方法,其特征在于,在本体(10,22)放置在过压区域(1)中之前,利用预加载材料(26)对用带有大量开放的开口的材料(24)制成的本体(10,22)进行挤压,此后随着材料(24)的开放空腔填满流体,预加载材料(26)从材料(24)释放。
4.可膨胀本体(10,22)的装置,其中该本体(10,22)用带有大量空腔的材料(12,24)制成,并以受到挤压的形式放置在过压区域中,其特征在于,该本体(10,22)设置成通过填满流体的开口膨胀。
5.如权利要求4所述的装置,其特征在于,本体(10,22)用带有大量封闭空腔(14)的弹性材料(12)制成,该材料(12)允许流体通过材料(12)扩散到空腔(14)中,并且本体(10,22)设置成放置在过压区域(1)中,然后通过存在于本体(10,22)中的流体经弹性材料(12)扩散到空腔(14)使其膨胀。
6.如权利要求3所述的装置,其特征在于,在本体(10,22)放置到过压区域中之前,利用预加载材料(26)将其挤压,该本体用带有大量开放空腔的弹性材料(24)制成。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20042134 | 2004-05-25 | ||
NO20042134A NO325434B1 (no) | 2004-05-25 | 2004-05-25 | Fremgangsmate og anordning for a ekspandere et legeme under overtrykk |
Related Child Applications (1)
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CN2011102427667A Division CN102359357A (zh) | 2004-05-25 | 2005-05-23 | 用于在过压下膨胀本体的方法和装置 |
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CN1989312A true CN1989312A (zh) | 2007-06-27 |
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Application Number | Title | Priority Date | Filing Date |
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CN2011102427667A Pending CN102359357A (zh) | 2004-05-25 | 2005-05-23 | 用于在过压下膨胀本体的方法和装置 |
CNA2005800166542A Pending CN1989312A (zh) | 2004-05-25 | 2005-05-23 | 用于在过压下膨胀本体的方法和装置 |
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CN2011102427667A Pending CN102359357A (zh) | 2004-05-25 | 2005-05-23 | 用于在过压下膨胀本体的方法和装置 |
Country Status (14)
Country | Link |
---|---|
US (1) | US20070257405A1 (zh) |
EP (1) | EP1756395B1 (zh) |
CN (2) | CN102359357A (zh) |
AP (1) | AP1950A (zh) |
AT (1) | ATE421024T1 (zh) |
AU (1) | AU2005248279A1 (zh) |
BR (1) | BRPI0511501A (zh) |
CA (1) | CA2567842C (zh) |
DE (1) | DE602005012391D1 (zh) |
DK (1) | DK1756395T3 (zh) |
EA (1) | EA009148B1 (zh) |
MX (1) | MXPA06013668A (zh) |
NO (1) | NO325434B1 (zh) |
WO (1) | WO2005116394A1 (zh) |
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- 2005-05-23 DE DE602005012391T patent/DE602005012391D1/de not_active Expired - Fee Related
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- 2005-05-23 WO PCT/NO2005/000170 patent/WO2005116394A1/en active Application Filing
- 2005-05-23 CN CN2011102427667A patent/CN102359357A/zh active Pending
- 2005-05-23 EP EP05742856A patent/EP1756395B1/en not_active Not-in-force
- 2005-05-23 AT AT05742856T patent/ATE421024T1/de not_active IP Right Cessation
- 2005-05-23 MX MXPA06013668A patent/MXPA06013668A/es active IP Right Grant
- 2005-05-23 CA CA002567842A patent/CA2567842C/en not_active Expired - Fee Related
- 2005-05-23 CN CNA2005800166542A patent/CN1989312A/zh active Pending
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Cited By (2)
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CN104011319A (zh) * | 2011-11-17 | 2014-08-27 | 贝克休斯公司 | 用于井眼流体自动管理的反应性扼流器及其使用方法 |
CN104011319B (zh) * | 2011-11-17 | 2016-09-14 | 贝克休斯公司 | 用于井眼流体自动管理的反应性扼流器及其使用方法 |
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DE602005012391D1 (de) | 2009-03-05 |
NO20042134L (no) | 2005-11-28 |
CA2567842C (en) | 2009-10-20 |
EA009148B1 (ru) | 2007-10-26 |
ATE421024T1 (de) | 2009-01-15 |
EP1756395A1 (en) | 2007-02-28 |
DK1756395T3 (da) | 2009-04-27 |
US20070257405A1 (en) | 2007-11-08 |
AP1950A (en) | 2009-02-06 |
AU2005248279A1 (en) | 2005-12-08 |
CN102359357A (zh) | 2012-02-22 |
EP1756395B1 (en) | 2009-01-14 |
NO325434B1 (no) | 2008-05-05 |
EA200602177A1 (ru) | 2007-04-27 |
MXPA06013668A (es) | 2007-03-28 |
AP2006003852A0 (en) | 2006-12-31 |
WO2005116394A1 (en) | 2005-12-08 |
BRPI0511501A (pt) | 2008-01-15 |
CA2567842A1 (en) | 2005-12-08 |
NO20042134D0 (no) | 2004-05-25 |
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