公开(公告)号：US08695717B2

公开(公告)日：2014-04-15

申请号：US13591868

申请日：2012-08-22

申请人： William E. Brennan, III ,  Colin Longfield ,  Alexis Arzoumanidis ,  Allessandro Caccialupi

发明人： William E. Brennan, III ,  Colin Longfield ,  Alexis Arzoumanidis ,  Allessandro Caccialupi

IPC分类号： E21B33/127

CPC分类号： E21B33/129 ,  E21B33/1216 ,  E21B33/1277 ,  E21B33/13 ,  E21B49/08

摘要： Conventional formation evaluation with dual inflatable packers includes the steps of pressurizing the packers so as to isolate an annular portion of the borehole wall, collecting one or more samples of formation fluid via the isolated portion of the borehole wall, and depressurizing the packers so as to permit movement of the mandrel within the borehole. A sampling method and apparatus that utilize one or more of the following to advantage is provided: restricting deformation of the packers during inflation using an annular bracing assembly; actively retracting the packers using ambient borehole pressure; and substantially centralizing the mandrel intermediate the packers so as to resist buckling of the mandrel.

摘要翻译： 具有双重充气封隔器的常规地层评估包括对封隔器加压以隔离钻孔壁的环形部分的步骤，通过井壁的隔离部分收集一个或多个地层流体样本，并对封隔器进行减压，以便 允许心轴在钻孔内移动。 提供了利用以下优点中的一个或多个的取样方法和装置：使用环形支撑组件限制充气期间封隔器的变形; 使用环境钻孔压力积极缩回封隔器; 并且在封隔器之间基本上集中心轴以防止心轴的弯曲。

公开(公告)号：US20130126191A1

公开(公告)日：2013-05-23

申请号：US13591868

申请日：2012-08-22

申请人： William E. Brennan, III ,  Colin Longfield ,  Alexis Arzoumanidis ,  Allessandro Caccialupi

发明人： William E. Brennan, III ,  Colin Longfield ,  Alexis Arzoumanidis ,  Allessandro Caccialupi

IPC分类号： E21B33/129 ,  E21B33/13

CPC分类号： E21B33/129 ,  E21B33/1216 ,  E21B33/1277 ,  E21B33/13 ,  E21B49/08

摘要： Conventional formation evaluation with dual inflatable packers includes the steps of pressurizing the packers so as to isolate an annular portion of the borehole wall, collecting one or more samples of formation fluid via the isolated portion of the borehole wall, and depressurizing the packers so as to permit movement of the mandrel within the borehole. A sampling method and apparatus that utilize one or more of the following to advantage is provided: restricting deformation of the packers during inflation using an annular bracing assembly; actively retracting the packers using ambient borehole pressure; and substantially centralizing the mandrel intermediate the packers so as to resist buckling of the mandrel.

摘要翻译： 具有双重充气封隔器的常规地层评估包括对封隔器加压以隔离钻孔壁的环形部分的步骤，通过井壁的隔离部分收集一个或多个地层流体样本，并对封隔器进行减压，以便 允许心轴在钻孔内移动。 提供了利用以下优点中的一个或多个的取样方法和装置：使用环形支撑组件限制充气期间封隔器的变形; 使用环境钻孔压力积极缩回封隔器; 并且在封隔器之间基本上集中心轴以防止心轴的弯曲。