A cable protection device for a submersible electric pump. It includes a protector, a submersible motor, and a small flat cable. One end of the small flat cable is connected to the motor lead. A small flat cable head is fixedly installed on the upper end of the submersible motor housing. A protection device is installed between the lower joints of the protector; a groove is arranged in the protection device along the axial direction, and the small flat cable is located in the groove. The upper body and the lower body of the protector are fixedly connected by bolts on both sides. The inner hole composed of the upper body and the lower body after the connection is installed at the small journal of the lower end of the lower joint of the protector. The maximum radial radius of the circumference is equal to or smaller than the radius of the submersible electric pump unit; the groove is arranged in the upper body. Its beneficial effects are simple structure and reasonable design. It can effectively protect the small flat cable from damage during the running of the electric submersible pump in horizontal wells and highly deviated wells, improve the success rate of the electric submersible pump in one trip, and increase production efficiency. .

   A cable protection device for a submersible electric pump includes a protector, a submersible motor, and a small flat cable. One end of the small flat cable is connected with the motor lead, and the upper end of the submersible motor shell is fixedly installed with a small flat cable. The head is characterized in that: a protection device is installed at the lower joint of the protector and the journal at the lower end; a groove is arranged in the protection device along the axial direction, and the small flat cable is located in the groove.

Cable protection device of electric submersible pump Technical field

[0001] The utility model relates to a submersible electric pump for oil exploitation, in particular to a cable protection device of the submersible electric pump, which belongs to the field of petroleum development and oil extraction machinery.

Background technique

[0002] Electric submersible pumps are pumping equipment used in oil production operations. The submersible electric pump downhole unit is mainly composed of multi-stage centrifugal pumps, oil and gas separators, protectors, and submersible motors connected in sequence from top to bottom. The cable connected to the lead of the submersible motor is usually called a small flat cable. The small flat cable goes up along the protector, the oil-gas separator, and the multistage centrifugal pump, and then connects to the power cable.

[0003] With the mature application of directional drilling technology, electric submersible pump lift technology is also increasingly applied to horizontal wells and highly deviated wells. The wellbore structure of horizontal wells and highly deviated wells is relatively complicated. , There are many build-up points and large doglegs, and the submersible electric pump downhole unit generally needs to pass through multiple build-up points before it can be in the stable or horizontal section. Cable knocks, scrapes, bumps, injuries, etc. often occur in the downhole process of the submersible electric pump downhole unit. Especially in the oil wells with small casing inner diameters, the success rate of a downhole is very low due to the small flat cable bumps. In order to improve The success rate of the small flat cable in one trip requires the protection device of the small flat cable head. Utility model content

[0004] In order to overcome the shortcomings of the low success rate of a single trip due to the frequent occurrence of knocks, scrapes, bumps, and injuries of small flat cables during the process of running into horizontal wells and highly deviated wells of the existing electric submersible pump downhole units, the utility model A new type of cable protection device for electric submersible pumps is provided.

[0005] The technical solution adopted by the utility model to solve its technical problems is: the cable protection device of the submersible electric pump includes a protector, a submersible motor, and a small flat cable. One end of the small flat cable is connected with the motor lead, and the submersible electric pump A small flat cable head is fixedly installed on one side of the upper end of the casing, and a protection device is installed at the journal of the lower end of the lower connector of the protector; a groove is arranged in the axial direction in the protection device, and the small flat cable is located In the groove.

[0006] The protection device includes an upper body and a lower body, the upper body and the lower body are fixedly connected by bolts on both sides, and the inner hole composed of the upper body and the lower body after the connection is installed in the small part of the lower end of the lower joint of the protector. At the journal, the outer circumference of the connected upper body and the lower body is formed by the maximum radial radius dimension equal to or smaller than the radius of the electric submersible pump unit; the groove is arranged in the upper body. The upper body axially extends downward to the upper end of the oil submersible motor housing, and the axial length of the upper body is greater than the axial length of the lower body. The groove is parallel to the axis of the bolt.

[0007] The beneficial effect of the utility model is that the structure is simple and the design is reasonable. It can effectively protect the small flat cable from damage during the process of running into the electric submersible pump in horizontal wells and highly deviated wells, and improve the electric submersible pump. The success rate of downholes improves production efficiency. Description of the drawings

[0008] FIG. 1 is a schematic diagram of the installation of the cable protection device of the electric submersible pump of the present invention.

[0009] FIG. 2 is a schematic diagram of the structure of the protection device of the present invention.

[0010] In the figure: 1. Protector connector, 2. Protector, 3. Small flat cable, 4. Small flat cable head, 5. Screw, 6. Submersible