Horizontal well cable protection device and application method

Specific implementation manner two:

[0025] Combine below figure 1 , 2 , 3, 4 illustrate this embodiment, a horizontal well cable protection device, including an out-well pulley frame 1, an in-well pulley frame 2, an in-well pulley 3, and an out-well pulley 4, the out-well pulley frame 1 and the in-well pulley frame 2 Fixed connection, the lower end of the inner well pulley frame 2 is a triangular structure that fits and connects to the corners of the wellhead, the inner well pulley 3 is rotatably connected to the well inner pulley frame 2, and the outer well pulley 4 is rotatably connected to the outer pulley frame 1. When in use, one end of the cable is connected to the traction device, and the other end of the cable extends into the well. The middle end of the cable is guided by rolling in the well 3 and outside the well 4, which can not only avoid the friction between the cable and the well wall, but also can pass through The rotation of the inner pulley 3 and the outer pulley 4 reduces the friction loss of the cable, prevents the cable skin from wearing, and further improves the service life of the cable; at the same time, the cable exerts downward pressure on the outer pulley 4, and the outer pulley 4 goes down outside the well. Pulley frame 1, so that the out-well pulley frame 1 is firmly installed outside the wellhead, and the out-well pulley 4 prevents the cable from contacting and rubbing against the ground; the cable generates pressure on the inner-well pulley 3 to the outside, and the inner-well pulley 3 squeezes the inner-well pulley frame to the outside 2. Make the pulley frame 2 in the well fit closely with the corners of the wellhead, so as to realize the positioning of the pulley frame 2 in the well at the wellhead. Positioning through the inlet corners facilitates the determination of the installation position during installation and prevents the fixing of the pulley outside the well. When the bolt of frame 1 is loosened, the horizontal well cable protection device is transferred into the well; because the cable squeezes the pulley 3 in the well, the inner pulley frame 2 is closely attached to the corner of the wellhead, and the outer pulley frame 1 is always located on the upper end of the outer wall of the wellhead, so The horizontal well cable protection device will not fall into the well under the action of gravity.

Specific implementation manner two:

[0026] Combine below figure 1 , 2 , 3, 4 illustrate this embodiment, this embodiment further explains the first embodiment, the two ends of the upper end surface of the outer well pulley frame 1 are rotatably connected with the lifting handle 7, and the horizontal well cable protection device can be rotated to It is perpendicular to the pulley frame 1 outside the well, and when the lifting handle 7 is not in use, it can be rotated to fit the pulley frame 1 outside the well.

Specific implementation manner three:

[0027] Combine below figure 1 , 2 , 3, 4 illustrate this embodiment. This embodiment further explains the first embodiment. The left end of the outer pulley frame 1 is fixedly connected with a magnetic marker 6, the magnetic marker 6, the inner pulley 3, and the outer pulley 4 In order to facilitate the measurement of the cable length, the underground cable connection is usually equipped with an induction device for detecting electromagnetic signal changes. When the cable passes through the magnetic marker 6, the electromagnetic pulse change is generated. The cable length is realized by capturing the electromagnetic pulse The measurement; this part is a common method for measuring downhole cable length, and the detection principle is the well-known principle of electromagnetic induction, so this manual does not give too much explanation on the device model and principle.