公开(公告)号：US20060198242A1

公开(公告)日：2006-09-07

申请号：US11062395

申请日：2005-02-22

Applicant: Theodorus Geerits ,  Balakrishna Mandal ,  Denis Schmitt

Inventor： Theodorus Geerits ,  Balakrishna Mandal ,  Denis Schmitt

IPC: G01V1/00

CPC classification number: G01V1/46 ,  Y10S367/911

Abstract: Multipole acoustic logging-while-drilling (LWD) tools and associated methods are disclosed herein. In some embodiments, the disclosed acoustic LWD tool comprises a transmitter array and at least one receiver array. The transmitter array generates acoustic waves with an excitation pattern having a cutoff frequency greater than about 3 kHz. The receiver array is spaced apart from the transmitter array and is configured to detect said acoustic waves. Some of the disclosed method embodiments comprise: generating multipole acoustic waves in a fluid-filled borehole using an excitation pattern with a cutoff frequency greater than about 3 kHz; selectively detecting acoustic waves that propagate with said excitation pattern; and determining an acoustic shear wave slowness for a formation penetrated by the borehole.

Abstract translation: 本文公开了多极声学测井同时钻探（LWD）工具和相关方法。 在一些实施例中，所公开的声学LWD工具包括发射器阵列和至少一个接收器阵列。 发射器阵列产生具有大于约3kHz的截止频率的激励图案的声波。 接收器阵列与发射器阵列间隔开并且被配置为检测所述声波。 所公开的方法实施例中的一些包括：使用截止频率大于约3kHz的激励模式在流体填充的钻孔中产生多极声波; 选择性地检测与所述激励图案一起传播的声波; 并确定由钻孔穿透的地层的声剪切波慢度。

公开(公告)号：US20070156359A1

公开(公告)日：2007-07-05

申请号：US11323674

申请日：2005-12-30

Applicant: Georgios Varsamis ,  Joakim Blanch ,  Arthur Cheng ,  Calvin Kessler ,  Denis Schmitt ,  Batakrishna Mandal

Inventor： Georgios Varsamis ,  Joakim Blanch ,  Arthur Cheng ,  Calvin Kessler ,  Denis Schmitt ,  Batakrishna Mandal

IPC: G01R29/00

CPC classification number: G01V1/44

Abstract: The present invention relates generally to a method and apparatus utilized in hydrocarbon exploration. More specifically, the present invention relates to the utilization of acoustic sources and receivers to determine acoustic properties of geologic formations as a logging tool traverses them, be it a wireline logging tool and/or a logging while drilling (LWD) tool. More particularly, the present invention is directed to methods of, and apparatus for, adaptive equalization of receivers to reduce and/or substantially eliminate sensitivity mismatch. A method is provided, the method comprising detecting arrival times of a first wave at each of a plurality of receivers, determining a first place in a well when the arrival times of the first wave are substantially the same at each of the plurality of receivers, and estimating effective receiver sensitivities and equalization factors for each of the plurality of receivers using a Stoneley wave amplitude received by the plurality of receivers at the first place in the well. The method also comprises correcting amplitudes of a second wave received by the plurality of receivers using the estimated effective receiver sensitivities and equalization factors for each of the plurality of receivers.

Abstract translation: 本发明一般涉及在烃勘探中使用的方法和装置。 更具体地说，本发明涉及使用声源和接收器来确定测井工具横穿它们的地质构造的声学特性，无论是电缆测井工具和/或钻井测井（LWD）工具。 更具体地，本发明涉及用于减少和/或基本消除灵敏度不匹配的接收机的自适应均衡的方法和装置。 提供了一种方法，所述方法包括：在多个接收器中的每一个处检测第一波的到达时间，当所述第一波的到达时间在所述多个接收机中的每一个处基本相同时，确定井中的第一位置， 以及使用由所述井中的所述第一位置处的所述多个接收器接收的斯通利波振幅来估计所述多个接收机中的每一个的有效接收机灵敏度和均衡因子。 该方法还包括使用针对多个接收机中的每一个的所估计的有效接收机灵敏度和均衡因子校正由多个接收机接收的第二波的振幅。

公开(公告)号：US20050284625A1

公开(公告)日：2005-12-29

申请号：US10878738

申请日：2004-06-28

Applicant: Paul Rodney ,  Jeroen Groenenboom ,  Wei Han ,  James Birchak ,  Denis Schmitt ,  Tim Geerits ,  Eugene Linyaev

Inventor： Paul Rodney ,  Jeroen Groenenboom ,  Wei Han ,  James Birchak ,  Denis Schmitt ,  Tim Geerits ,  Eugene Linyaev

IPC: E21B37/08 ,  E21B43/08 ,  E21B47/09 ,  G01V1/44 ,  E21B47/00 ,  E21B28/00 ,  E21B43/00

CPC classification number: E21B47/091 ,  E21B37/08 ,  E21B43/08 ,  G01V1/44

Abstract: A system and method for determining blockage in a wellbore containing fluid and/or in a formation adjacent the wellbore, according to which energy is generated in the fluid and variables associated with the energy are measured.

Abstract translation: 测量包含流体和/或靠近井眼的地层中的堵塞的系统和方法，根据该系统和方法在流体中产生能量和与能量相关联的变量。

公开(公告)号：US20050207277A1

公开(公告)日：2005-09-22

申请号：US10804669

申请日：2004-03-19

Applicant: Darrell Gordy ,  Bruce Cornish ,  Denis Schmitt ,  Carl Robbins

Inventor： Darrell Gordy ,  Bruce Cornish ,  Denis Schmitt ,  Carl Robbins

IPC: G01V1/00 ,  G01V1/38

CPC classification number: G01V1/38

Abstract: A seismic acquisition system comprising a remote-controlled buoy for conducting seismic acquisition operations. The buoy comprises an operating system for operating a seismic wave production device on the buoy, a placement system, a communications system, and dynamic position locating system. The seismic acquisition system also comprises a remote control system for controlling the buoy systems. The seismic acquisition system also comprises receivers for receiving the seismic wave and generating a data signal indicative of the received seismic wave. The seismic acquisition system operates by controlling the placement system with the remote control system to position the buoy and then controlling the operating system with the remote control system to produce a seismic wave from the seismic wave production device. The receivers then receive the seismic wave and generate a data signal indicative of the seismic wave. The time of producing the seismic wave as well as the position of the buoy at the time of production are then analyzed with the data signal by a data processor.

Abstract translation: 一种地震采集系统，包括用于进行地震采集操作的遥控浮标。 浮标包括用于在浮标上操作地震波生产装置的操作系统，放置系统，通信系统和动态位置定位系统。 地震采集系统还包括用于控制浮标系统的遥控系统。 地震采集系统还包括用于接收地震波并产生指​​示接收的地震波的数据信号的接收机。 地震采集系统通过利用遥控系统控制放置系统来定位浮标，然后利用遥控系统控制操作系统，从地震波生产装置产生地震波。 然后，接收器接收地震波并产生指​​示地震波的数据信号。 然后用数据处理器用数据信号分析产生地震波的时间以及浮标在生产时的位置。

公开(公告)号：US07392135B2

公开(公告)日：2008-06-24

申请号：US11323674

申请日：2005-12-30

Applicant: Georgios L. Varsamis ,  Joakim Oscar Blanch ,  Arthur C. H. Cheng ,  Calvin Wisner Kessler ,  Denis Schmitt ,  Batakrishna Mandal

Inventor： Georgios L. Varsamis ,  Joakim Oscar Blanch ,  Arthur C. H. Cheng ,  Calvin Wisner Kessler ,  Denis Schmitt ,  Batakrishna Mandal

IPC: G01R29/00

CPC classification number: G01V1/44

Abstract: Methods and apparatus are provided for reducing and/or substantially eliminating sensitivity mismatch of acoustic receivers used with acoustic sources to determine acoustic properties of geologic formations as a logging tool traverses the formations. Methods are directed to detecting waveform arrival times at receivers, determining places in a well where arrival times of waves are substantially the same at a plurality of receivers, and estimating effective receiver sensitivities and equalization factors using Stoneley wave amplitudes and windowed deconvolution of Stoneley waves. Methods are further directed to correcting wave amplitudes using estimated effective receiver sensitivities and equalization factors for receivers.

Abstract translation: 提供了用于减少和/或基本上消除与声源一起使用的声接收机的灵敏度失配的方法和装置，以便在测井工具穿过地层时确定地质构造的声学特性。 方法涉及检测接收器处的波形到达时间，确定在多个接收机中波的到达时间基本相同的阱中的位置，以及使用斯通利波斯的斯通利波幅度和窗口去卷积来估计有效的接收机灵敏度和均衡因子。 方法还涉及使用估计的有效接收机灵敏度和接收机的均衡因子校正波幅度。

公开(公告)号：US20070107938A1

公开(公告)日：2007-05-17

申请号：US11281061

申请日：2005-11-17

Applicant: Bruce Cornish ,  Ronald Spross ,  Denis Schmitt

Inventor： Bruce Cornish ,  Ronald Spross ,  Denis Schmitt

IPC: E21B47/00

CPC classification number: E21B47/12 ,  G01V1/44

Abstract: In some embodiments, apparatus and systems, as well as methods, may operate to enable moving a drill string through a borehole while acquiring data generated by a plurality of receiver sub-arrays included in a drill string. The sub-arrays may be separated by one or more sources of sonic energy, as well as by a non-aliased receiver spacing distance, a distance associated with a selected aperture of investigation, or a distance associated with a formation slowness. The sonic energy may be received by the sub-arrays at a plurality of stations. Data may be collected at a telemetry receiver.

Abstract translation: 在一些实施例中，装置和系统以及方法可以操作以使得能够在采集包括在钻柱中的多个接收器子阵列产生的数据的同时，通过钻孔移动钻柱。 子阵列可以由一个或多个声能源以及非混叠接收机间隔距离，与所选择的调查孔径相关联的距离或与形成慢度相关联的距离分开。 声能可以由多个站处的子阵列接收。 数据可以在遥测接收器处收集。