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1. 发明申请

US20020149498A1 Reservoir monitoring through windowed casing joint 有权
标题翻译：通过窗口套管接头进行水库监测
公开(公告)号：US20020149498A1
公开(公告)日：2002-10-17
申请号：US10115617
申请日：2002-04-03
申请人： SCHLUMBERGER TECHNOLOGY CORPORATION
发明人： Jacques Tabanou , Reinhart Ciglenec , Clive Eckersley , Christian Chouzenoux
IPC分类号： G01V003/00
CPC分类号： E21B7/061 , E21B23/00 , E21B23/14 , E21B33/13 , E21B47/01 , E21B47/024 , E21B47/044 , E21B47/09 , E21B47/12 , E21B47/122 , E21B47/124 , E21B49/00 , E21B49/10
摘要： An apparatus and a method for controlling oilfield production to improve efficiency includes a remote sensing unit that is placed within a subsurface formation, an antenna structure for communicating with the remote sensing unit, a casing joint having nonconductive nullwindowsnull for allowing a internally located antenna to communicate with the remote sensing unit, and a system for obtaining subsurface formation data and for producing the formation data to a central location for subsequent analysis. The remote sensing unit is placed sufficiently far from the wellbore to reduce or eliminate effects that the wellbore might have on formation data samples taken by the remote sensing unit. The remote sensing unit is an active device with the capability of responding to control commands by determining certain subsurface formation characteristics such as pressure or temperature, and transmitting corresponding data values to a wellbore tool. Some embodiments of the remote sensing unit include a battery within its power supply. Other embodiments include a capacitor for storing charge. In order for a communication link to be established with the remote sensing unit through a wireline tool in a cased well, a casing joint includes at least one electromagnetic window that is formed of a non-conductive material that will allow electromagnetic signals to pass through it. In the preferred embodiment, the electromagnetic windows are formed to substantially circumscribe the casing joint to render it largely rotationally invariant. The electromagnetic windows are formed of any rigid and durable non-conductive material including, by way of example, either ceramics or fiberglass.
摘要翻译：用于控制油田生产以提高效率的装置和方法包括放置在地下地层内的遥感单元，用于与遥感单元通信的天线结构，具有非导电“窗口”的壳体接头，用于允许内部定位的天线与遥感单元进行通信，以及用于获得地下地层数据并将地层数据产生到中心位置的系统用于后续分析。遥感单元放置得足够远离井眼，以减少或消除井眼对由遥感单元拍摄的地层数据样本可能产生的影响。遥感单元是通过确定诸如压力或温度的某些地下地层特征以及将相应的数据值传送到井眼工具来响应控制命令的能力的有源装置。遥感单元的一些实施例包括其电源内的电池。其他实施例包括用于存储电荷的电容器。为了通过套管井中的有线工具与遥感单元建立通信链路，壳体接头包括至少一个由允许电磁信号通过它的非导电材料形成的电磁窗口。在优选实施例中，电磁窗口形成为基本上限制套管接头，使其大体上不旋转地变化。电磁窗由任何刚性和耐用的非导电材料形成，包括例如陶瓷或玻璃纤维。

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