公开(公告)号：EP2507606A1

公开(公告)日：2012-10-10

申请号：EP10788170.8

申请日：2010-11-19

申请人： Chevron U.S.A. Inc. ,  Los Alamos National Security LLC

发明人： THOMPSON, M., Clark ,  SINHA, Dipen, N. ,  COATES, Don, M. ,  ARCHULETTA, Jacobo, R. ,  GONZALEZ, Manuel, E.

IPC分类号： G01L9/00 ,  E21B47/06 ,  G01D5/48 ,  G01K7/32

CPC分类号： G01L9/0022 ,  E21B47/06 ,  E21B47/122 ,  G01D3/022 ,  G01D5/48 ,  G01D18/008 ,  G01K7/32

摘要： A system, method and device for interrogating a downhole environment in a borehole beneath a surface includes a source of electromagnetic energy, operable to transmit an electromagnetic signal in the borehole, a sensor module, including a passive resonating circuit including a crystal oscillator having a resonant frequency that varies with changes in the condition in the downhole environment to reflect the electromagnetic signal and to modulate the electromagnetic signal in response to a condition in the downhole environment in the borehole and a detector positionable to receive the reflected modulated electromagnetic signal.

摘要翻译： 用于询问钻井表面下方井眼环境的系统，方法和装置包括可操作以在钻孔中传送电磁信号的电磁能源，包括无源谐振电路的传感器模块，所述无源谐振电路包括具有共振的晶体振荡器 频率随着井下环境条件的变化而变化，以反映电磁信号，并响应井眼中的井下环境中的状况和能够接收反射调制电磁信号的检测器来调制电磁信号。

公开(公告)号：EP2297595B1

公开(公告)日：2014-05-21

申请号：EP09774059.1

申请日：2009-06-19

申请人： Chevron U.S.A. Inc. ,  Los Alamos National Security, LLC

发明人： VU, Cung, Khac ,  SINHA, Dipen, N. ,  PANTEA, Cristian ,  NIHEI, Kurt ,  SCHMITT, Denis, P. ,  SKELT, Christopher

IPC分类号： G01V1/46

CPC分类号： G01V1/46

公开(公告)号：EP2297595A1

公开(公告)日：2011-03-23

申请号：EP09774059.1

申请日：2009-06-19

申请人： Chevron U.S.A., Inc. ,  Los Alamos National Security, LLC

发明人： VU, Cung, Khac ,  SINHA, Dipen, N. ,  PANTEA, Cristian ,  NIHEI, Kurt ,  SCHMITT, Denis, P. ,  SKELT, Christopher

IPC分类号： G01V1/52

CPC分类号： G01V1/46

摘要： A device, positioned within a well bore, configured to generate and direct an acoustic beam into a rock formation around a borehole is disclosed. The device comprises a source configured to generate a first signal at a first frequency and a second signal at a second frequency; a transducer configured to receive the generated first and the second signals and produce acoustic waves at the first frequency and the second frequency; and a non-linear material, coupled to the transducer, configured to generate a collimated beam with a frequency equal to the difference between the first frequency and the second frequency by a non-linear mixing process, wherein the non-linear material includes one or more of a mixture of liquids, a solid, a granular material, embedded microspheres, or an emulsion.

公开(公告)号：EP2577354A2

公开(公告)日：2013-04-10

申请号：EP11720266.3

申请日：2011-05-06

申请人： Chevron U.S.A. Incorporated ,  Los Alamos National Security LLC

发明人： VU, Cung Khac ,  SINHA, Dipen, N. ,  PANTEA, Cristian ,  NIHEI, Kurt, T. ,  SCHMITT, Denis, P. ,  SKELT, Christopher

IPC分类号： G01V1/04 ,  G01V1/40 ,  G01V1/46

CPC分类号： G01V1/46

摘要： In some aspects of the invention, a method of generating a beam of acoustic energy in a borehole is disclosed. The method includes generating a first broad-band acoustic pulse at a first broad-band frequency range having a first central frequency and a first bandwidth spread; generating a second broad-band acoustic pulse at a second broad-band frequency range different than the first frequency range having a second central frequency and a second bandwidth spread, wherein the first acoustic pulse and second acoustic pulse are generated by at least one transducer arranged on a tool located within the borehole; and transmitting the first and the second broad-band acoustic pulses into an acoustically non-linear medium, wherein the composition of the non-linear medium produces a collimated pulse by a non-linear mixing of the first and second acoustic pulses, wherein the collimated pulse has a frequency equal to the difference in frequencies between the first central frequency and the second central frequency and a bandwidth spread equal to the sum of the first bandwidth spread and the second bandwidth spread.