公开(公告)号：US5892148A

公开(公告)日：1999-04-06

申请号：US843782

申请日：1997-04-21

申请人： Jean-Gerard Durup ,  Benoit Guerber ,  Pierre Berest ,  Benoit Brouard ,  Jean Bergues

发明人： Jean-Gerard Durup ,  Benoit Guerber ,  Pierre Berest ,  Benoit Brouard ,  Jean Bergues

IPC分类号： E21B41/00 ,  E21B47/00 ,  E21B47/10 ,  G01M3/28 ,  E21B49/00 ,  G01F17/00

CPC分类号： E21B47/10 ,  E21B41/0057 ,  E21B47/0003 ,  G01M3/2892

摘要： The method comprising measuring the rate at which working fluid is expelled from a cavity through a central tubing to a well head under atmospheric pressure at the well head; determining the shape of a zone of the well selected for positioning an interface between a test fluid and the working fluid; performing temperature measurements and pressure measurements over the full height of a cavity under atmospheric pressure at the well head; injecting additional working fluid into the central tubing or into the annular space until a predetermined test pressure is reached; measuring the compressibility of a cavity during the preceding step; injecting test fluid into the annular; measuring the depth of the interface between the test fluid and the working fluid for a first time at the end of injecting test fluid; measuring the test fluid and the working fluid pressures at the well head; measuring the level of the interface between the test fluid and the working fluid for a second time; and evaluating the real leakage rate of test fluid that took place during said test period.

摘要翻译： 该方法包括测量在井口处大气压下工作流体通过中心管道从腔体排出到井口的速率; 确定所选井的区域的形状，用于定位测试流体和工作流体之间的界面; 在井口的大气压下在空腔的整个高度上进行温度测量和压力测量; 将额外的工作流体注入中心管或环形空间中，直到达到预定的试验压力; 测量前一步骤中空腔的压缩性; 将测试流体注入环形; 在注射测试流体结束时首次测量测试流体和工作流体之间的界面深度; 测量测试流体和井口处的工作流体压力; 测量流体和工作流体之间的界面水平第二次; 并评估在所述测试期间发生的测试液体的实际泄漏率。