发明申请
WO2016182640A1 REDUCING OR PREVENTING DISSIPATION OF ELECTRICAL CURRENT AND ASSOCIATED MAGNETIC SIGNAL IN A WELLBORE
审中-公开
基本信息:
- 专利标题： REDUCING OR PREVENTING DISSIPATION OF ELECTRICAL CURRENT AND ASSOCIATED MAGNETIC SIGNAL IN A WELLBORE
- 专利标题（中）：降低或防止电流和相关磁信号在井眼中的消散
- 申请号：PCT/US2016/025110 申请日：2016-03-31
- 公开(公告)号：WO2016182640A1 公开(公告)日：2016-11-17
- 发明人： MOSS, Clinton , RIDGWAY, Douglas , MARTIN, Troy
- 申请人： APPLIED TECHNOLOGIES ASSOCIATES, INC.
- 申请人地址： 3025 Buena Vista Drive Paso Robles, CA 93446 US
- 专利权人： APPLIED TECHNOLOGIES ASSOCIATES, INC.
- 当前专利权人： APPLIED TECHNOLOGIES ASSOCIATES, INC.
- 当前专利权人地址： 3025 Buena Vista Drive Paso Robles, CA 93446 US
- 代理机构： LOCKLAR, Michael
- 优先权： US62/141,636 20150401; US14/884,414 20151015
- 主分类号： E21B47/0228
- IPC分类号： E21B47/0228 ; E21B47/0232 ; G01V3/20
摘要：
An artificial toolface reference system includes a power supply providing current to a ground lead and a reference lead. A ground point is coupled to the ground lead and in electrical connection with the ground. A reference wellbore includes a reference conductor in electrical connection with the ground. The reference conductor is in electrical connection with the reference lead. The reference conductor includes an uninsulated portion and an insulated portion having an insulating layer positioned thereabout. A guidance sensor positioned outside the reference wellbore includes at least one magnetometer. The power supply may be used to provide a current through the reference conductor, into the ground through the uninsulated portion, and the ground point such that a reference magnetic field is generated along the reference conductor. The guidance sensor may measure the reference magnetic field with a magnetometer. An artificial magnetic toolface may be calculated therefrom.
摘要（中）：
人造工具面参考系统包括向地面引线和参考引线提供电流的电源。 接地点与地线连接并与地面电连接。 参考井眼包括与地面电连接的参考导体。 参考导体与参考导线电连接。 参考导体包括非绝缘部分和具有位于其周围的绝缘层的绝缘部分。 位于参考井筒外部的引导传感器包括至少一个磁力计。 电源可以用于通过参考导体提供电流，通过非绝缘部分提供到地面中，并且接地点使得沿着参考导体产生参考磁场。 引导传感器可以用磁力计测量参考磁场。 可以从其计算人造磁性工具面。
IPC结构图谱:
| E | 固定建筑物 |
| --E21 | 土层或岩石的钻进；采矿 |
| ----E21B | 土层或岩石的钻进；从井中开采油、气、水、可溶解或可熔化物质或矿物泥浆 |
| ------E21B47/00 | 测量钻孔或井 |
| --------E21B47/02 | .斜度或方向的确定 |
| ----------E21B47/022 | ..井眼的 |
| ------------E21B47/0228 | ...利用电磁能或其检测器 |