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Automatic running device for on-line testing cable

A technology of online testing and cable entry, which is applied in the direction of cable laying equipment, etc., can solve the problems of limiting the application range of online testing technology, unfavorable on-site construction application, cable scrapping and running in construction, etc., so as to improve the running speed and quality of running and The effect of lowering the depth precision, being conducive to wide application, and low investment cost

Inactive Publication Date: 2015-11-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The online test cable is inserted manually by the gravity of the cable itself, which is prone to slow or even difficult insertion, which reduces the construction efficiency
[0004] 2. Due to the scalability of the cable, it is easy to twist and accumulate the cable during the lowering process, resulting in the scrapping of the cable or the failure of the lowering construction, which affects production
Due to the scalability of the cable itself, coupled with twisting and accumulation, the measurement error is large, and its expansion and contraction length cannot be counted in continuous measurement, which is not conducive to the improvement of online test accuracy and is not conducive to on-site construction applications.
[0006] To sum up, there are disadvantages such as low construction efficiency, cumbersome operation, and large measurement error in the current online test cable installation process.
The above-mentioned defects limit the application range of the online testing process in thermal oil wells to a certain extent, and the production site urgently needs to solve the above-mentioned problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The fixed bracket 3 includes a base and a brace, the brace is fixed on both sides of the base, the transmission shaft 12 is installed on the top of the brace, the screw 2 is welded on the outside of the base and the adjusting wire sleeve is fixed on the bottom plate 5, and the screw 2 is installed on Adjust the wire sleeve. The screw rod 2 can rotate in the adjusting wire sleeve, so that the fixed support 3 equipped with the cable fixed wheel 6 can move back and forth, and the clamping degree of the cable fixed wheel 6 to the cable 14 can be adjusted, which is convenient to adjust.

Embodiment 2

[0023] Fixed support 3 comprises base and support plate, and support plate is fixed on the both sides of base, and transmission shaft 12 is installed on the top of support plate, and base is provided with screw hole, and fixing bolt is housed in it, and this fixing bolt can slide on base plate 5. Move in the slot. Adjusting the fixed distance of each fixing bracket 3 back and forth can adjust the clamping degree of the cable 14 by the cable fixing wheel 6 .

[0024] The cable fixing wheel 6 is a plane wheel or an arc wheel, and the inner diameter of the three cable fixing wheels 6 combined is smaller than the outer diameter of the cable 14 . Since the contact area of ​​the camber wheel is large, the use of the camber wheel is more conducive to clamping the cable 14 . The straightening and lowering mechanism positioned at the top is also covered by the base plate 5, and the cable inlets 1 on each base plate 5 are all set at one position. Arranging in this way can make the cab...

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Abstract

The invention discloses an automatic running device for an on-line testing cable which is particularly suitable for online running construction of a downhole testing cable of a thermal oil recovery steam injection well. The device comprises bottom boards and straightening running mechanisms. Each straightening running mechanism is provided with three cable tight pulleys which are in 120-degree uniform arrangement, and wheel faces of the cable tight pulleys are used for clamping the cable. Each cable tight pulley is fixed on a transmission shaft provided with bevel gears and is supported by a fixed holder. The rotation of the cable tight pulleys is achieved by the bevel gears. The fixed holders are fixed on the bottom boards. The cable enters the abutting surfaces of the cable tight pulleys via the cable entrance of the bottom boards and runs into the downhole. A reduction gearbox is connected with a motor. A main drive gear is installed on the output shaft of the reduction gearbox and is meshed with a transmission gear on the transmission shaft. The motor is connected with a power supply control cabinet of a well site via a power line. The use of automatic running device solves the problems that the manual running construction has high labor intensity, has difficulties in cable running and is prone to damage the cable. The automatic running device can improve the running speed, running quality and depth precision of the on-line testing cable in site.

Description

technical field [0001] The invention relates to downhole cable testing equipment in the petroleum industry, in particular to an online testing cable automatic running device, and is especially suitable for the online running construction of downhole testing cables in thermal oil production and steam injection wells. Background technique [0002] At present, downhole cable online testing has been widely used in various fields of petroleum engineering, especially in the process of thermal oil recovery, data can be obtained through online testing and then the oil and gas development plan can be corrected. However, there are many drawbacks and limitations in the current online test cable running process. For example: [0003] 1. Running the online test cable is manually driven by the gravity of the cable itself, which is easy to slow down or even difficult to run in, which reduces the construction efficiency. [0004] 2. Due to the scalability of the cable, it is very easy to ...

Claims

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Application Information

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IPC IPC(8): H02G1/06
Inventor 高晓巴燕冯庆伟杜俭平刘建萍潘四海刘新忠王海燕
Owner CHINA PETROLEUM & CHEM CORP
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