基于电火花的油管套管外防腐层针孔缺陷检测系统
By constructing a shared common reference ground module for the internal and external electrode detection domains of the electric spark detection system and implementing time-division mutually exclusive excitation, the problems of low efficiency and inconsistent positioning benchmarks in oil tubing casing detection were solved, and the automatic identification and accurate evaluation of penetrating pinholes were achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHAANXI YUANSHENG YONGHE PETROLEUM ENG CO LTD
- Filing Date
- 2026-06-18
- Publication Date
- 2026-07-17
AI Technical Summary
Existing oil pipe casing corrosion protection equipment suffers from problems such as low efficiency due to its split design, inconsistent positioning benchmarks for inner and outer walls, and difficulty in automatically identifying penetrating pinholes.
A pinhole defect detection system for the outer anti-corrosion layer of oil tubing casing based on electrical discharge machining was constructed. A central timing controller was used to realize time-division mutually exclusive excitation of the inner and outer electrode detection domains. A unified electrical reference was provided through a common reference ground module. Combined with a travel positioning module and a data fusion processing layer, the system can realize synchronous detection of inner and outer walls and automatic identification of penetrating pinholes.
It enables efficient and accurate detection of the anti-corrosion coating on the inner and outer walls of oil tubing casing, can automatically identify penetrating pinhole defects, improves detection efficiency and accuracy, and provides a reliable corrosion risk assessment.
Smart Images
Figure CN122409810A_ABST