A direct-reading flowmeter cable head oscillation unlocking device
By designing a oscillating unblocking device for the cable head of a direct-reading flowmeter, and utilizing an oscillating telescopic rod and an elastic limiting pin structure, the oscillating unblocking of the direct-reading flowmeter is achieved, solving the problem of blockage in wells and improving testing efficiency and cable life.
CN117108231BActive Publication Date: 2026-05-26DAQING OILFIELD CO LTD +1
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- DAQING OILFIELD CO LTD
- Filing Date
- 2022-05-17
- Publication Date
- 2026-05-26
AI Technical Summary
Technical Problem
In existing technologies, direct-reading flow meters cannot effectively unblock when they encounter obstructions in the well, leading to overload or breakage of the test cable, which affects the water injection development effect and testing efficiency.
Method used
Design a oscillating unlocking device for a direct-reading flowmeter cable head. The device uses an oscillating telescopic rod connected to a connector on the cable head to achieve upward and downward oscillation. Combined with an elastic limiting pin and a spring spiral wire, the device achieves oscillating unlocking.
Benefits of technology
It effectively removes blockages in the well of the direct-reading flow meter, prevents cable breakage, improves testing efficiency, and extends cable life.
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Figure CN117108231B_ABST
Abstract
This invention relates to a vibration-disconnect device for a direct-reading flowmeter cable head. It primarily addresses the problem that existing direct-reading flowmeters, when jammed during stratified water injection testing, cannot be disconnected, easily leading to the flowmeter falling into the well. The bottom of the cable connector (1) is threadedly connected to a vibration telescopic rod (9). The lower end of the vibration telescopic rod (9) has a protruding telescopic rod protrusion (10), located inside the telescopic rod movable cylinder (14). The lower end of the telescopic rod movable cylinder (14) is connected to the flowmeter lower connector (18). The inner wall of the telescopic rod movable cylinder (14) has a circumferential limiting groove (16), and the outer wall of the telescopic rod protrusion (10) has a radially retractable conical limiting pin (11). This vibration-disconnect device for a direct-reading flowmeter cable head can vibrate upwards and downwards when the flowmeter is jammed, achieving vibration-disconnection of the flowmeter and preventing it from falling into the well.
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