公开(公告)号：US06781115B2

公开(公告)日：2004-08-24

申请号：US10091251

申请日：2002-03-05

申请人： Christian Stoller ,  Xavier Herve ,  Sunil N. Gulrajani ,  Peter Wraight ,  Verna L. Lomax ,  Dennis J. Pittman ,  Jean-Pierre Poyet

发明人： Christian Stoller ,  Xavier Herve ,  Sunil N. Gulrajani ,  Peter Wraight ,  Verna L. Lomax ,  Dennis J. Pittman ,  Jean-Pierre Poyet

IPC分类号： G01V504

CPC分类号： G01V5/104 ,  G01V5/04

摘要： A system and method are disclosed for detecting radiation phenomena in an area surrounding a wellbore traversing an earth formation. A logging instrument is equipped with combined radiation detectors to provide multiple measurements at the same axial position along the instrument axis, without the use of rotating parts within the instrument. Shielded or segmented detectors provide azimuthally focused detector sensitivity. A controllable radiation source is optionally disposed on the instrument for subsurface irradiation. Also disclosed is the use of radioactive materials in unison with the logging instrument to determine subsurface flow and reservoir characteristics.

摘要翻译： 公开了一种用于检测穿过地层的井身周围区域中的辐射现象的系统和方法。 测井仪器配备有组合式辐射探测器，可在仪器轴线的同一轴向位置提供多次测量，而无需使用仪器内的旋转部件。 屏蔽或分段检测器提供方位角聚焦检测器灵敏度。 可控辐射源可选地设置在仪器上用于地下照射。 还公开了使用放射性材料与测井仪器一致以确定地下水流和储层特性。