一种用于寻找、定位井下断管的电磁场空间定位装置

Abstract

本实用新型属于油田测井技术领域，尤其涉及一种用于寻找、定位井下断管的电磁场空间定位装置，包括激励线圈、感应线圈和安装管，还包括线圈支撑机构；线圈支撑机构，包括摇臂、电动推杆和空心的球形轮，其中，摇臂的一端和电动推杆的一端分别铰接在安装管的外壁上，摇臂的另一端固定连接有旋转轴，球形轮可转动地安装在该旋转轴上，电动推杆的另一端铰接在摇臂的中部，通过控制电控推杆的伸缩能够调整摇臂的角度；所述感应线圈与旋转轴固定连接，并且，感应线圈位于球形轮内。本实用新型将感应线圈设置在球形轮内部，通过电动推杆控制球形轮的伸出程度，能使球形轮中的感应线圈更靠近井壁，从而有效提高感应线圈的感应能力。

Claims

1. An electromagnetic field spatial positioning device for finding, locating a broken pipe downhole, comprising an excitation coil (11), an induction coil (10) and a mounting pipe (6), characterized in that: It also includes a coil support mechanism; The coil support mechanism includes a rocker arm (3), an electric push rod (5), and a hollow spherical wheel (8). One end of the rocker arm (3) and one end of the electric push rod (5) are respectively hinged to the outer wall of the mounting tube (6). The other end of the rocker arm (3) is fixedly connected to a rotating shaft (9). The spherical wheel (8) is rotatably mounted on the rotating shaft (9). The other end of the electric push rod (5) is hinged to the middle of the rocker arm (3). By controlling the extension and retraction of the electric push rod, the angle of the rocker arm (3) can be adjusted, thereby controlling the extension degree of the spherical wheel (8). The induction coil (10) is fixedly connected to the rotating shaft (9), and the induction coil (10) is located inside the spherical wheel (8); The axis of the induction coil (10), the axis of the excitation coil (11) and the axis of the mounting tube (6) are located in the same plane. By adjusting the angle of the rocker arm (3), the angle of the axis of the induction coil (10) can be adjusted so that the axis of the induction coil (10) is parallel to the axis of the excitation coil (11), thus entering the working state.

2. An electromagnetic field spatial locator for finding and locating a broken pipe downhole as defined in claim 1, wherein, It also includes institutions that promote legitimacy; The straightening mechanism includes a rocker arm (3), an electric push rod (5), a balance bar (4), and a straightening wheel (2). One end of the rocker arm (3) and one end of the electric push rod (5) are respectively hinged to the outer wall of the mounting tube (6). The other end of the rocker arm (3) is hinged to the middle of the balance bar (4), and the other end of the electric push rod (5) is hinged to the middle of the rocker arm (3). Each balance bar (4) has a straightening wheel (2) installed at both ends. The angle of the rocker arm (3) can be adjusted by controlling the extension and retraction of the electric push rod, thereby controlling the extension degree of the balance bar (4) and the straightening wheel (2).

3. An electromagnetic field spatial locator for finding and locating a broken pipe downhole as defined in claim 1, wherein: There are four sets of coil support mechanisms, which are evenly distributed along the outer circumference of the mounting tube (6).

4. An electromagnetic field spatial locator for finding and locating a broken pipe downhole as defined in claim 1, wherein: The outer casing of the induction coil (10) is made of insulating material.

5. An electromagnetic field spatial locator for finding and locating a broken pipe downhole according to any one of claims 1-4, characterized in that: The excitation coil (11) is located inside the mounting tube (6).

6. An electromagnetic field spatial locator for finding and locating a broken pipe downhole according to any one of claims 1-4, characterized in that: The excitation coil (11) is located outside the mounting tube (6).

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