Circumferential jet device and oil well flow probe

By optimizing the nozzle's injection structure and using a multi-nozzle design, the problems of slow injection speed and uneven liquid diffusion in traditional flow logging methods have been solved, achieving higher accuracy and reliability in flow measurement and adapting to complex downhole environments.

CN224550093UActive Publication Date: 2026-07-24SINOPEC OILFIELD SERVICE CORPORATION +2
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Patent Information

Application Number
CN202522087705.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-09-28
Publication Date
2026-07-24
Estimated Expiration
2035-09-28

AI Technical Summary

Technical Problem

Traditional downhole flow logging methods suffer from problems such as slow injection velocity, uneven diffusion of the detection fluid, and unstable measurement signals, especially in complex downhole environments where measurement accuracy and reliability are insufficient.

Method used

A circumferential spraying device is designed. By optimizing the spraying structure of the nozzle, the detection liquid forms an expanded liquid distribution in the circumferential direction of the housing. The second end of the spraying structure expands in the circumferential direction of the housing. The spraying structure is provided with a spraying slope to improve the spraying uniformity. Multiple nozzles are symmetrically distributed in the circumferential direction of the housing.

Benefits of technology

It improves the injection efficiency and uniformity of the detection fluid, reduces liquid diffusion, significantly enhances the accuracy and reliability of oil well flow measurement, and adapts to complex downhole environments.

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Abstract

The utility model discloses a circumferential jetting device and an oil well flow probe, and relates to the technical field of oil field measurement. A nozzle of the circumferential jetting device is arranged on a shell, and the nozzle communicates with a containing cavity of the shell; the piston assembly is used for pushing the detection liquid in the accommodating cavity to be sprayed out from the nozzle; the nozzle is provided with a liquid inlet flow channel and a liquid spraying structure which are communicated, the first end of the liquid inlet flow channel is communicated with the containing cavity, the second end of the liquid inlet flow channel is communicated with the first end of the liquid spraying structure, and the second end of the liquid spraying structure is arranged towards the outside of the shell; the second end of the liquid spraying structure expands in the circumferential direction of the shell compared with the first end of the liquid spraying structure, and the size of the second end of the liquid spraying structure in the circumferential direction of the shell is larger than the size of the second end of the liquid spraying structure in the axial direction of the shell. According to the circumferential jetting device, by optimizing the liquid jetting structure of the nozzle, the jetted detection liquid forms expanded liquid distribution in the circumferential direction of the shell, a more uniform liquid environment is provided for follow-up measurement, and therefore the precision and reliability of oil well flow measurement are improved.
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