Cable-controlled intelligent injection allocation device, layered intelligent injection allocation tubular column and layered injection allocation method

By adopting parallel power supply method and current limiting fuse in the cable-controlled intelligent injector, the problem of full-well communication failure caused by series power supply in the cable-controlled intelligent injector system is solved, and a single-layer failure does not affect the normal operation of other sections is achieved, and working efficiency and production stability are improved.

CN119777812APending Publication Date: 2025-04-08PETROCHINA CO LTD
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Patent Information

Application Number
CN202311290438.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-10-08
Publication Date
2025-04-08

AI Technical Summary

Technical Problem

In the existing cable-controlled intelligent injector system, multiple cable-controlled intelligent injectors use series power supply, which leads to the failure of the full well communication and the inability to be layered, resulting in economic losses and affecting the normal production of the oil and water well group.

Method used

By changing the internal circuit system structure of the cable-controlled intelligent injector, using cable splitters to supply power to the cable-controlled intelligent injector, and a current limit fuse is set in each injector to realize the parallel power supply between each cable-controlled intelligent injector. When the circuit of the injector in a certain layer segment fails, the current limiting fuse will be automatically disconnected to ensure that it does not affect the normal operation of other layers.

Benefits of technology

It effectively avoids the problem of full-well communication failure caused by the injector failure of a certain layer section, ensures the normal operation of other layers, avoids economic losses and production impacts, and improves work efficiency.

✦ Generated by Eureka AI based on patent content.

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    Figure CN119777812A_ABST
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Abstract

The invention discloses a cable-controlled intelligent injection allocation device, a layered intelligent injection allocation tubular column and a layered injection allocation method, an upper joint is arranged at the upper end of a central spacer bush, a fluid channel is formed in the central spacer bush, and the fluid channel is communicated with the upper joint; the central spacer bush is sleeved with the outer sleeve, the upper end of the outer sleeve is connected with the upper connector, the lower end of the outer sleeve is connected with the outer side wall of the central spacer bush, and an annular containing cavity is formed between the outer sleeve and the central spacer bush; the cable main line, the cable branch lines, the current limiting protector and the electric component are arranged in the annular accommodating cavity; the cable main line is connected with the cable branch line, the cable branch line is connected with the current limiting protector, and the current limiting protector is connected with the power utilization assembly. Two ends of the cable main line can be respectively connected with the inlet cable and the outlet cable. According to the method, parallel power supply between the cable-controlled intelligent injection allocator is realized, and the problem that the whole well cannot be tested and adjusted after a certain layer section is short-circuited in a series power supply mode of the cable-controlled intelligent injection allocator at present is effectively solved.
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