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    • 1. 发明申请
    • EXPANDABLE CENTRALIZER FOR EXPANDABLE PIPE STRING
    • 可扩展的管道可扩展中心
    • WO2008144249A2
    • 2008-11-27
    • PCT/US2008/063163
    • 2008-05-09
    • FRANK'S INTERNATIONAL, INC.BUYTAERT, JeanMILLER, Eugene, EdwardMCDOWELL, Donald, Elwin
    • BUYTAERT, JeanMILLER, Eugene, EdwardMCDOWELL, Donald, Elwin
    • E21B17/10E21B43/10
    • E21B17/1028E21B17/1078E21B43/103
    • A close-tolerance expandable bow spring centralizer (8) having a first expandable collar (10A) coupled to and spaced apart from a second expandable collar (10B) through a plurality of bow springs (30) wherein expandable collars (1OA, 10B) comprise a plurality of slidably coupled links (16) that separate to expand the diameter of the collars (1OA, 10B), e.g., upon expansion of an expandable pipe string (80) on which the centralizer (8) is received. Expandable bow spring centralizer (8) may grip the expandable pipe string (80) when in the collapsed configuration to eliminate the need for a stop collar. Additionally or alternatively, a fin (32) may be connected to each bow spring (30), and then connected to one or more adjacent fins (32) upon collapse of the bow springs (30) to form a restraining band (39) that may be ruptured, e.g., upon expansion of the expandable pipe string (80).
    • 具有通过多个弓形弹簧(30)联接到第二可膨胀套环(10B)并与第二可膨胀套环(10B)间隔开的第一可膨胀套环(10A)的紧公差可伸缩弓形弹簧扶正器(8),其中可膨胀套圈(10A,10B) 多个可滑动地联接的链节(16),其分开以扩大套环(10A,10B)的直径,例如在扩张管状支柱(80)的膨胀时,扶正器(8)被容纳在其上。 当处于折叠构型时,可膨胀弓形弹簧扶正器(8)可以夹紧可膨胀管柱(80)以消除对止动环的需要。 附加地或替代地,翅片(32)可以连接到每个弓形弹簧(30),然后在弓形弹簧(30)塌缩时连接到一个或多个相邻的翅片(32),以形成约束带(39), 例如,在可膨胀管柱(80)膨胀时可能会破裂。
    • 2. 发明申请
    • EXPANDABLE CENTRALIZER FOR EXPANDABLE PIPE STRING
    • 膨胀式管道用膨胀式集中器
    • WO2008144249A4
    • 2009-03-12
    • PCT/US2008063163
    • 2008-05-09
    • FRANK S INR INCBUYTAERT JEANMILLER EUGENE EDWARDMCDOWELL DONALD ELWIN
    • BUYTAERT JEANMILLER EUGENE EDWARDMCDOWELL DONALD ELWIN
    • E21B17/10E21B43/10
    • E21B17/1028E21B17/1078E21B43/103
    • A close-tolerance expandable bow spring centralizer (8) having a first expandable collar (10A) coupled to and spaced apart from a second expandable collar (10B) through a plurality of bow springs (30) wherein expandable collars (1OA, 10B) comprise a plurality of slidably coupled links (16) that separate to expand the diameter of the collars (1OA, 10B), e.g., upon expansion of an expandable pipe string (80) on which the centralizer (8) is received. Expandable bow spring centralizer (8) may grip the expandable pipe string (80) when in the collapsed configuration to eliminate the need for a stop collar. Additionally or alternatively, a fin (32) may be connected to each bow spring (30), and then connected to one or more adjacent fins (32) upon collapse of the bow springs (30) to form a restraining band (39) that may be ruptured, e.g., upon expansion of the expandable pipe string (80).
    • (8),其具有通过多个弓形弹簧(30)联接到第二可膨胀套环(10B)并与第二可膨胀套环(10B)间隔开的第一可膨胀套环(10A),其中可膨胀套环(10A,10B)包括 多个可滑动地联接的联接件(16),例如在其上接收扶正器(8)的可扩张管柱(80)扩张时,该联接件分开以扩张卡圈(10A,10B)的直径。 当处于收缩构造时,可扩张弓形弹簧扶正器(8)可夹紧可扩张管柱(80)以消除对止动套环的需要。 附加地或替代地,翅片(32)可以连接到每个弓形弹簧(30),并且随后在弓形弹簧(30)塌陷时连接到一个或多个相邻翅片(32)以形成限制带(39), 例如在可膨胀管柱(80)膨胀时可能破裂。
    • 3. 发明申请
    • EXPANDABLE CENTRALIZER FOR EXPANDABLE PIPE STRING
    • 可扩展的管道可扩展中心
    • WO2008144249A3
    • 2009-01-15
    • PCT/US2008063163
    • 2008-05-09
    • FRANK S INR INCBUYTAERT JEANMILLER EUGENE EDWARDMCDOWELL DONALD ELWIN
    • BUYTAERT JEANMILLER EUGENE EDWARDMCDOWELL DONALD ELWIN
    • E21B17/10E21B43/10
    • E21B17/1028E21B17/1078E21B43/103
    • A close-tolerance expandable bow spring centralizer (8) having a first expandable collar (10A) coupled to and spaced apart from a second expandable collar (10B) through a plurality of bow springs (30) wherein expandable collars (1OA, 10B) comprise a plurality of slidably coupled links (16) that separate to expand the diameter of the collars (1OA, 10B), e.g., upon expansion of an expandable pipe string (80) on which the centralizer (8) is received. Expandable bow spring centralizer (8) may grip the expandable pipe string (80) when in the collapsed configuration to eliminate the need for a stop collar. Additionally or alternatively, a fin (32) may be connected to each bow spring (30), and then connected to one or more adjacent fins (32) upon collapse of the bow springs (30) to form a restraining band (39) that may be ruptured, e.g., upon expansion of the expandable pipe string (80).
    • 具有通过多个弓形弹簧(30)联接到第二可膨胀套环(10B)并与第二可膨胀套环(10B)间隔开的第一可膨胀套环(10A)的紧公差可伸缩弓形弹簧扶正器(8),其中可膨胀套圈(10A,10B) 多个可滑动地联接的链节(16),其分开以扩大套环(10A,10B)的直径,例如在扩张管状支柱(80)的膨胀时,扶正器(8)被容纳在其上。 当处于折叠构型时,可膨胀弓形弹簧扶正器(8)可以夹紧可膨胀管柱(80)以消除对止动环的需要。 附加地或替代地,翅片(32)可以连接到每个弓形弹簧(30),然后在弓形弹簧(30)塌缩时连接到一个或多个相邻的翅片(32),以形成约束带(39), 例如,在可膨胀管柱(80)膨胀时可能会破裂。