公开(公告)号：US20060016599A1

公开(公告)日：2006-01-26

申请号：US10896492

申请日：2004-07-22

申请人： Anthony Badalamenti ,  Karl Blanchard ,  Simon Turton ,  Ronald Faul ,  Henry Rogers ,  James Griffith ,  Michael Crowder

发明人： Anthony Badalamenti ,  Karl Blanchard ,  Simon Turton ,  Ronald Faul ,  Henry Rogers ,  James Griffith ,  Michael Crowder

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。