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1. 发明申请

US20070156359A1 Adaptive equalization of downhole acoustic receivers 有权
标题翻译：井下声学接收机的自适应均衡
公开(公告)号：US20070156359A1
公开(公告)日：2007-07-05
申请号：US11323674
申请日：2005-12-30
申请人： Georgios Varsamis , Joakim Blanch , Arthur Cheng , Calvin Kessler , Denis Schmitt , Batakrishna Mandal
发明人： Georgios Varsamis , Joakim Blanch , Arthur Cheng , Calvin Kessler , Denis Schmitt , Batakrishna Mandal
IPC分类号： G01R29/00
CPC分类号： G01V1/44
摘要： 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.
摘要翻译：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。

2. 发明申请

US20060013065A1 Seismic Data Acquisition System and Method for Downhole Use 审中-公开
标题翻译：地震数据采集系统及井下使用方法
公开(公告)号：US20060013065A1
公开(公告)日：2006-01-19
申请号：US10710513
申请日：2004-07-16
申请人： Georgios Varsamis , Laurence Wisniewski , Abbas Arian
发明人： Georgios Varsamis , Laurence Wisniewski , Abbas Arian
IPC分类号： G01V1/00 , G08C19/16 , G01V3/00 , G08B1/00
CPC分类号： G01V11/002
摘要： A method and system for conducting a seismic survey by lowering a string of intelligent clampable sensor pods with 3-C sensors into a borehole. The string of pods is serially interconnected by a cable having a conductor pair which provides both power and data connectivity. The uppermost sensor pod is connected to a downhole telemetry and control module. The cables and pods use connectors to allow assembly, customization, repair, and disassembly on site. Each pod has an upper and a lower connector, a processor, and memory which is coupled to both the upper and the lower connectors. Each pod is capable of simultaneous and independent serial communications at each connector with the memory. The telemetry and control module is designed to query the pods to determine the system configuration. The telemetry and control module then simultaneously triggers all pods to acquire data, the pods storing the collected data locally in the memory. After data collection, the controller simultaneously signals the pods to immediately transfer data serially from the local memory to the next higher adjacent pod and receive data, if any, from the lower adjacent pod, if any, storing the received data in memory. The first data transferred from each pod is that data collected by its local sensors. Subsequent data originates from lower pods and is simply passed up the string of pods to the telemetry and control module. In other words, the pods communicate in a bucket brigade fashion.
摘要翻译：通过将具有3-C传感器的智能可夹式传感器盒串降到钻孔中进行地震勘测的方法和系统。荚串通过具有导体对的电缆串联连接，该导线对提供电力和数据连接性。最上面的传感器盒连接到井下遥测和控制模块。电缆和荚使用连接器，以便现场组装，定制，修理和拆卸。每个吊舱具有连接到上连接器和下连接器的上下连接器，处理器和存储器。每个插槽都能够在与存储器的每个连接器上同时独立的串行通信。遥测和控制模块设计用于查询吊舱以确定系统配置。然后，遥测和控制模块同时触发所有荚获取数据，荚将存储收集的数据本地存储在存储器中。在收集数据之后，控制器同时发信号通知信箱，以便立即将数据从本地存储器传输到下一个较高的相邻吊舱，并接收来自较低的相邻吊舱的数据（如果有的话），将数据存储在存储器中。从每个pod传输的第一个数据是由其本地传感器收集的数据。随后的数据来源于较低的pod，并且简单地将一串pods传递给遥测和控制模块。换句话说，荚是以斗旅方式进行沟通。

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