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1. Which rotor flowmeter is good? Seeking recommendations?
2. Reasons for overflow during oil and gas well operations
The main reasons for overflow during oil and gas well operations include wellbore pressure imbalance, operational errors, equipment failures, and geological factors. Essentially, it is the uncontrolled flow caused by the formation fluid pressure exceeding the liquid column pressure inside the well.. 1. Imbalance of well control pressure
(1) Insufficient drilling fluid density: Mud column pressure is lower than formation pore pressure, unable to effectively suppress high-pressure oil and gas reservoirs
Homework operation error
(1) Failure to detect in a timely manner: Early signs of overflow were not detected through flow meters, mud pit liquid level monitoring, etc.
Equipment and material failures
(1) Blowout preventer failure: damage to the gate seal, control system failure, or failure of pressure testing
(2) Monitoring instrument failure: distortion of key instrument data such as wellhead pressure sensors and level gauges
(3) Deterioration of drilling fluid performance: high temperature causes mud thickening and gas invasion, resulting in a decrease in density 4 Geological and environmental factors
(1) Abnormal high-pressure formations: drilling into unpredictable high-pressure oil and gas reservoirs or fractured reservoirs
(2) Shallow gas risks: sudden invasion of free gas from the brigade in shallow formations into the wellbore
(3) Neighbor well interference: pressure transmission from nearby injection or production wells affects the pressure system of this well. Note: According to the "Well Control Management Regul
3. What is a mud flowmeter?
Measuring media: mud, pulp, cement slurry 2. Product classification: integrated mud flowmeter, split mud flowmeter, energy-saving mud flowmeter 3. Measurement error: ± 1.0% or ± 0.5% 4. Medium conductivity:>5 μ s/cm 5. Measurable flow rate range: 0.1 m/s -15 m/s 6. Measurement ratio: 1:150 (wider range ratio can be customized if needed) 7. Power supply for limb side: DC24V or AC220V 8. Signal output: pulse signal or 4-20mA current signal 9. Communication interface: Supports 485 communication 10. Communication protocol: MODBUS, HART, Profibus, etc. Normal working environment temperature: -25 ℃ -+60 ℃ 11. Measurable Medium temperature: -20 ℃ --+60 ℃ 12. Flow direction: positive, normal including negative, net flow rate 13. Rated working pressure: DN10-DN150 ≤ 1.6Mpa (high pressure can be customized) DN200-DN350 ≤ 1.0Mpa (high pressure can be customized) DN400-DN1000 ≤ 0.6Mpa (high pressure can be customized) DN1100-DN2200 ≤ 0.25Mpa (high pressure can be customized).
4. What are the commonly used flow meters and what are their characteristics?
1. Electromagnetic flowmeter: Based on the law of electromagnetic induction, it is suitable for measuring various corrosive liquids such as acids, alkalis, salts, as well as flammable and explosive media, industrial wastewater, pulp, mud, etc. This flowmeter is not suitable for measuring gases, vapors, and liquid media with low conductivity, nor can it measure high-tempera
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