Systems for Reverse-Circulation Cementing in Subterranean Formations
    14.
    发明申请
    Systems for Reverse-Circulation Cementing in Subterranean Formations 审中-公开
    地下地层反循环水泥系统

    公开(公告)号:US20080011482A1

    公开(公告)日:2008-01-17

    申请号:US11862300

    申请日:2007-09-27

    IPC分类号: E21B33/04

    CPC分类号: E21B47/0005 E21B33/14

    摘要: Methods and systems for reverse-circulation cementing in subterranean formations are provided. An example of a method is a method of cementing casing in a subterranean well bore, comprising inserting a casing into the well bore, the casing comprising a casing shoe; equipping the casing with a well head, and a casing inner diameter pressure indicator; flowing an equilibrium fluid into the well bore; flowing a cement composition into the well bore after the equilibrium fluid; determining from the well-bore pressure indicator when the well bore pressure has reached a desired value; discontinuing the flow of cement composition into the well bore upon determining that the well bore pressure has reached a desired value; and permitting the cement composition to set in the subterranean formation. Examples of systems include systems for cementing casing in a well bore.

    摘要翻译: 提供了地下地层反向循环固井的方法和系统。 一种方法的实例是将套管固定在地下井孔中的方法,包括将壳体插入井眼,壳体包括套管鞋; 将套管装备好井口,以及套管内径压力指示器; 使平衡流体流入井眼; 在平衡流体之后将水泥组合物流入井眼; 当井筒压力达到期望值时,从井筒压力指示器确定; 在确定井眼压力达到期望值后,停止将水泥组合物流入井眼; 并允许水泥组合物置于地层中。 系统的实例包括用于将套管固定在井眼中的系统。

    Cementing methods and systems for initiating fluid flow with reduced pumping pressure
    16.
    发明申请
    Cementing methods and systems for initiating fluid flow with reduced pumping pressure 有权
    降低泵送压力的用于启动流体流动的固定方法和系统

    公开(公告)号:US20060016599A1

    公开(公告)日:2006-01-26

    申请号:US10896492

    申请日:2004-07-22

    IPC分类号: E21B33/00

    CPC分类号: E21B33/14

    摘要: A method of initiating fluid circulation in a well bore through a casing inner diameter and an annulus outside the casing, the method having the following steps: inducing an increase in the annulus fluid pressure; flowing cement composition into the annulus at the top of the well bore; maintaining a difference in pressure between the fluid pressure of the casing inner diameter and the fluid pressure of the annulus until enough cement composition has entered the annulus to drive fluid circulation by the added cement composition weight. A method of cementing a casing in a well bore, wherein an annulus is defined between the casing and the well bore, the method having the following steps: connecting a circulation fluid pump to the casing inner diameter; pumping circulation fluid out of the casing inner diameter, whereby fluid flow in a reverse-circulation direction through the casing inner diameter and annulus is initiated; maintaining fluid flow in a reverse-circulation direction through a well bore annulus and the casing inner diameter until enough cement composition has entered the annulus to drive fluid circulation by the added cement composition weight; disconnecting the low-pressure cement composition pump from the annulus; and flowing additional cement composition into the annulus to complete a cement composition operation.

    摘要翻译: 一种通过壳体内径和壳体外部的环空开启井眼中的流体循环的方法,该方法具有以下步骤:引起环流体压力的增加; 流动的水泥组合物进入井眼顶部的环形空间; 保持壳体内径的流体压力与环形空间的流体压力之间的压力差,直到足够的水泥组合物已经进入环形空间以通过所添加的水泥组合物重量驱动流体循环。 一种将套管固定在井眼中的方法,其中在所述壳体和所述井筒之间限定环形空间,所述方法具有以下步骤:将循环流体泵连接到所述壳体内径; 泵送循环流体脱离套管内径,从而开始通过套管内径和环空的反向循环方向的流体流动; 保持流体沿反向循环方向通过井筒环和壳体内径,直到足够的水泥组合物进入环形空间,以通过添加的水泥组合物重量驱动流体循环; 将低压水泥组合泵从环形空间中断开; 并将额外的水泥组合物流入环空以完成水泥组合物操作。

    Casing Shoes and Methods of Reverse-Circulation Cementing of Casing
    17.
    发明申请
    Casing Shoes and Methods of Reverse-Circulation Cementing of Casing 审中-公开
    套管鞋和反向循环水泥套管的方法

    公开(公告)号:US20080060814A1

    公开(公告)日:2008-03-13

    申请号:US11939962

    申请日:2007-11-14

    IPC分类号: E21B33/14

    摘要: A method having the following steps: running a circulation valve comprising a reactive material into the well bore on the casing; reverse-circulating an activator material in the well bore until the activator material contacts the reactive material of the circulation valve; reconfiguring the circulation valve by contact of the activator material with the reactive material; and reverse-circulating a cement composition in the well bore until the reconfigured circulation valve decreases flow of the cement composition. A circulation valve for cementing casing in a well bore, the valve having: a valve housing connected to the casing and comprising a reactive material; a plurality of holes in the housing, wherein the plurality of holes allow fluid communication between an inner diameter of the housing and an exterior of the housing, wherein the reactive material is expandable to close the plurality of holes.

    摘要翻译: 一种具有以下步骤的方法:将包括反应性材料的循环阀运送到所述壳体上的井眼中; 在井眼中使活化剂材料反向循环,直到活化剂材料接触循环阀的反应性材料; 通过活化剂材料与反应性材料的接触来重新配置循环阀; 并使井眼中的水泥组合物反向循环,直到重新配置的循环阀减少水泥组合物的流动。 一种用于将套管固定在井眼中的循环阀,所述阀具有:连接到所述壳体并包括反应性材料的阀壳体; 所述壳体中的多个孔,其中所述多个孔允许所述壳体的内径和所述壳体的外部之间的流体连通,其中所述反应性材料可膨胀以封闭所述多个孔。

    Pressure responsive centralizer
    18.
    发明申请
    Pressure responsive centralizer 审中-公开
    压力响应式扶正器

    公开(公告)号:US20060243456A1

    公开(公告)日:2006-11-02

    申请号:US11115998

    申请日:2005-04-27

    申请人: Ronald Faul

    发明人: Ronald Faul

    IPC分类号: E21B43/01 E21B33/035

    CPC分类号: E21B17/1078 E21B41/00

    摘要: A centralizer including hollow structural components. In at least one embodiment, the hollow structural component is sealed by at least one valve or rupture disk. When unacceptable overpressures occur, the valve or rupture disks break to allow influx into the hollow element, thereby relieving pressure and avoiding damage that might otherwise occur. In other embodiments, the hollow structural component collapses to expand available volume.

    摘要翻译: 包括中空结构部件的扶正器。 在至少一个实施例中,中空结构部件由至少一个阀或破裂盘密封。 当发生不可接受的超压时,阀或破裂盘破裂以允许流入中空元件,从而减轻压力并避免可能发生的损坏。 在其他实施例中,中空结构部件收缩以膨胀可用体积。

    Pressure responsive centralizer
    19.
    发明申请

    公开(公告)号:US20060243435A1

    公开(公告)日:2006-11-02

    申请号:US11116003

    申请日:2005-04-27

    申请人: Ronald Faul

    发明人: Ronald Faul

    IPC分类号: E21B17/10

    摘要: A centralizer including hollow structural components. In at least one embodiment, the hollow structural component is sealed by at least one valve or rupture disk. When unacceptable overpressures occur, the valve or rupture disks break to allow influx into the hollow element, thereby relieving pressure and avoiding damage that might otherwise occur. In other embodiments, the hollow structural component collapses to expand available volume.