公开(公告)号：US20100157737A1

公开(公告)日：2010-06-24

申请号：US12430914

申请日：2009-04-28

申请人： DOUGLAS E. MILLER ,  AHMAD LATIFZAI ,  ROMAIN CHARLES ANDRE PRIOUL ,  BRUCE A. MACKAY ,  OLIVER C. MULLINS ,  ANDREAS HAUSOT ,  CANYUN WANG ,  ALIREZA FARAHANI

发明人： DOUGLAS E. MILLER ,  AHMAD LATIFZAI ,  ROMAIN CHARLES ANDRE PRIOUL ,  BRUCE A. MACKAY ,  OLIVER C. MULLINS ,  ANDREAS HAUSOT ,  CANYUN WANG ,  ALIREZA FARAHANI

IPC分类号： G01S1/72 ,  G01V1/00

CPC分类号： G01V1/46 ,  E21B33/124 ,  E21B43/26 ,  E21B47/101

摘要： Methods and related systems are described for measuring acoustic signals in a borehole during a fracturing operation. The system includes a downhole toolstring designed and adapted for deployment in a borehole formed within a subterranean rock formation. A downhole rock fracturing tool opens and propagates a fracture in the subterranean rock formation. Dipole and/or quadrupole acoustic sources transmit acoustic energy into the subterranean rock formation. A receiver array measures acoustic energy traveling through the subterranean rock formation before, during and after the fracture induction. Geophones mounted on extendable arms can be used to measure shear wave acoustic energy travelling in the rock formation. The toolstring can be constructed such that the sources and receivers straddle the fracture zone during the fracturing. Alternatively, the sources or the receivers can co-located axially with the fracture zone, or the toolstring can be repositioned following fracturing such that the fracture zone is between the acoustic sources and receivers.

摘要翻译： 描述了用于在压裂操作期间测量井眼中的声信号的方法和相关系统。 该系统包括设计并适于部署在形成于地下岩层内的钻孔中的井下工具串。 井下岩石压裂工具打开并传播地下岩层中的裂缝。 偶极和/或四极声源将声能传递到地下岩层中。 接收器阵列测量在断裂诱导之前，之中和之后穿过地下岩层的声能。 安装在可伸缩臂上的地震检波器可用于测量在岩层中行进的剪切波声能。 可以构造工具串，使得源和接收器在压裂期间跨越断裂带。 或者，源或接收器可以与断裂区域轴向共定位，或者在压裂之后可以重新定位工具串，使得断裂区域在声源和接收器之间。