CN1390275A - 在井筒中扩张管形件的方法 - Google Patents

在井筒中扩张管形件的方法 Download PDF

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CN1390275A
CN1390275A CN00815694.8A CN00815694A CN1390275A CN 1390275 A CN1390275 A CN 1390275A CN 00815694 A CN00815694 A CN 00815694A CN 1390275 A CN1390275 A CN 1390275A
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expander
pit shaft
tubular piece
pull bar
bar group
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CN1222681C (zh
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科内利斯·雅各布斯·韦斯曼
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Shell Internationale Research Maatschappij BV
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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
    • E21B43/10—Setting of casings, screens, liners or the like in wells
    • E21B43/103—Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like

Abstract

一种在井筒中扩张管形件(4)的方法,它包括:将管形件安装到井筒中的选定位置;在井筒中安装一个拉杆组(6),该拉杆组有一个连接到地表的牵拉设备(8)的上部(6a)和一个装有一个扩张器(12)的下部(6b),该扩张器的外径大于所述管形件的内径,该扩张器设置得低于要扩张的管形件的至少一部分,所述上部通过一个连接器(14)连接到所述下部,该连接器允许所述上部相对于所述下部旋转;操作所述牵拉设备,将所述拉杆组向上拉,并同时相对于所述下部旋转所述上部,从而将所述扩张器拉过所述管形件的所述至少一部分。

Description

在井筒中扩张管形件的方法
本发明涉及一种在形成于地层中的井筒中扩张管形件的方法。在开采碳氢化合物流体的钻井技术中，井筒通常装备有套管或者衬套，以防止井壁崩塌。已经尝试过应用可以径向扩张的套管或者衬套，这样，将套管或衬套下降到井筒中，然后将一个扩张器拉过套管或衬套而使之扩张。这种方法的优点之一是不再需要直径逐级递减的井筒套管的传统嵌套安装。但是，似乎需要高得惊人的拉力来将扩张器拉过套管或衬套。
本发明的一个目的是提供一种在形成于地层中的井筒中扩张管形件的改进的方法，从而使将扩张器拉过管形件所需的拉力减小。
根据本发明，提供了一种在形成于地层中的井筒中扩张管形件的方法，该方法包括：
-将管形件安装到井筒中的选定位置；
-在井筒中安装一个拉杆组，该拉杆组在纵向上延伸穿过所述管形件，具有一个连接到地表的牵拉设备的上部和一个装有一个扩张器的下部，该扩张器的外径大于所述管形件的内径，该扩张器设置得低于要扩张的管形件的至少一部分，所述上部通过一个连接器连接到所述下部，该连接器允许所述上部相对于所述下部关于所述拉杆组的纵轴线旋转；
-操作所述牵拉设备，将所述拉杆组向上拉，并同时相对于所述拉杆组的下部旋转其上部，从而将所述扩张器拉过所述管形件的所述至少一部分。
通过拉动所述拉杆组同时旋转其上部，使得所述拉杆组和所述井壁或者管形件之间的摩擦力的纵向分量大大减小甚至消除。因此，所述牵拉力不再需要克服所述纵向摩擦力分量。
下面将结合附图更详细地描述本发明。附图中，图1简要图示了用于实施本发明的方法的拉杆组的一个实施例。
在图1中，图示了一个形成在地层3中的井筒1。一个具有初始内径D1的管形套筒4安装在所述井筒1中的选定深度。该套筒4从该选定深度延伸到地表(如图1所示)。或者，该套筒4从该选定深度延伸到地表下的某个位置。一个具有纵向流体通道(图中未示出)的钻杆柱6形式的拉杆组穿过井筒1延伸进入所述套筒4，该钻杆柱6具有一个连接到一个设置在地表10的牵拉设备8的上部6a，以及一个连接到一个扩张器12的下部6b。该扩张器12为截头圆锥体形，具有一个直径稍小于D1的上端和一个直径D2稍大于D1的下端。另外，所述扩张器12装有一个第一锁紧装置(图中未示出)，用来将扩张器12临时锁在套筒4的下端，该扩张器还有一个第二锁紧装置(图中未示出)，用来将所述钻杆柱6的下端锁到所述扩张器12上。所述牵拉设备8能够将所述钻杆柱6穿过所述井筒1向上拉。
所述钻杆柱6的所述上部6a通过一个离合器14式的连接器连接到该钻杆柱的下部6b，该离合器能够在接合模式和分离模式下工作，在接合模式下，该离合器14阻止所述上部6a相对于所述下部6b关于钻杆柱6的纵轴线旋转，在分离模式下，该离合器14允许所述上部6a相对于所述下部6b关于所述纵轴线旋转。可以通过在钻杆柱6流体通道中的流体中产生选定的压力脉冲，或者用任何其他控制手段，例如电控装置，来控制所述离合器14，使之在接合模式和分离模式之间切换。
在正常操作中，所述扩张器12被锁紧在所述套筒4的下端上，穿过井筒1下降套筒4及锁紧在其上的扩张器，直到套筒的下端到达所述选定深度，在这里，套筒4被锚固到井筒上。然后，穿过所述套筒4下降所述钻杆柱6，直到钻杆柱6的下端锁紧到所述扩张器12上，这样，在钻杆柱6下降的过程中，离合器14就处于接合模式。然后将该离合器14切换到分离模式，并旋转所述钻杆柱6的所述上部6a，同时操作所述牵拉设备8，将所述钻杆柱6穿过井筒1向上拉。这样，扩张器12从所述套筒4的下端解锁，被向上拉过所述套筒4，从而将所述套筒4扩张到内径D2。
通过拉动所述钻杆柱6同时旋转其上部6a，由于所述上部6a和所述套筒/井壁之间的摩擦力的纵向分量的减小(或消失)，可以使将所述钻杆柱拉过井筒所需的拉力大大减小。

Claims (6)

1.一种在形成于地层中的井筒中扩张管形件的方法，该方法包括：
-将管形件安装到井筒中的选定位置；
-在井筒中安装一个拉杆组，该拉杆组在纵向上延伸穿过所述管形件，具有一个连接到地表的牵拉设备的上部和一个装有一个扩张器的下部，该扩张器的外径大于所述管形件的内径，该扩张器设置得低于要扩张的管形件的至少一部分，所述上部通过一个连接器连接到所述下部，该连接器允许所述上部相对于所述下部关于所述拉杆组的纵轴线旋转；
-操作所述牵拉设备，将所述拉杆组向上拉，并同时相对于所述下部旋转所述上部，从而将所述扩张器拉过所述管形件的所述至少一部分。
2.如权利要求1所述的方法，其特征在于，所述连接器邻近所述扩张器设置。
3.如权利要求1或2所述的方法，其特征在于，所述连接器可以选择性地在一种接合模式和一种分离模式下工作，在接合模式下，禁止所述上部相对于所述下部旋转，在分离模式下，允许所述上部相对于所述下部旋转。
4.如权利要求1到3之一所述的方法，其特征在于，所述管形件是井筒套筒、井筒岩屏(wellbore screen)或者井筒衬套。
5.如权利要求1到4之一所述的方法，其特征在于，所述拉杆组是用来钻井的钻杆柱。
6.基本上如此前参照附图所描述的方法。
CN00815694.8A 1999-11-15 2000-11-15 在井筒中扩张管形件的方法 Expired - Lifetime CN1222681C (zh)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1965147B (zh) * 2004-03-08 2010-07-28 国际壳牌研究有限公司 用于使管从预膨胀部分向上和向下进行膨胀的双重圆锥膨胀器
CN101910555A (zh) * 2007-12-10 2010-12-08 艾尼股份公司 套管膨胀工具

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GB2374101B (en) 2003-08-20
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AR026460A1 (es) 2003-02-12
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GB0211028D0 (en) 2002-06-26
GB2374101A (en) 2002-10-09
WO2001036788A1 (en) 2001-05-25
CA2391584A1 (en) 2001-05-25
EA200200573A1 (ru) 2002-10-31
AU1703601A (en) 2001-05-30
CA2391584C (en) 2008-09-23
EA003125B1 (ru) 2003-02-27
NO331109B1 (no) 2011-10-10
OA12085A (en) 2006-05-04
AU764661B2 (en) 2003-08-28
CN1222681C (zh) 2005-10-12
BR0015563A (pt) 2002-07-09
US6575250B1 (en) 2003-06-10
MXPA02004817A (es) 2004-09-27
NO20022294L (no) 2002-05-14

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