一种环空液位监测装置及监测方法
By setting up multi-level monitoring chambers and reed switch float assemblies on the casing, the problems of monitoring accuracy and reliability of existing equipment under complex working conditions are solved, realizing multi-level precise positioning and time-series monitoring of annular fluid level, and improving drilling safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SANYA MARINE OIL & GAS RESEARCH INSTITUTE NORTHEAST PETROLEUM UNIVERSITY
- Filing Date
- 2026-04-27
- Publication Date
- 2026-07-17
AI Technical Summary
Existing annular fluid level monitoring equipment is susceptible to annular fluid scouring, downhole impurities, and temperature and pressure fluctuations during drilling operations, resulting in decreased monitoring accuracy. It is unable to promptly detect abnormal conditions such as overflows and leaks, and cannot meet the precise data support requirements for drilling operation safety management.
Using a casing as a carrier, power is supplied through a top power supply module and data is uploaded through a data transmission module. Multiple independent monitoring chambers are formed by an isolation plate and the inner wall of the casing. Liquid level monitoring is performed using a reed switch and a float assembly. The float density is lower than that of the annular fluid. The circuit is controlled by a magnet. Combined with a timestamp recording module, multi-level precise positioning and time-series monitoring are achieved.
It achieves high precision, stability and reliability under complex drilling conditions, can capture fluid level changes in real time, provide reliable data support, and promptly report anomalies, providing support for drilling safety management and early warning of overflow and leakage.
Smart Images
Figure CN122217429B_ABST