1. Overview
Simulate the flow pattern change of gas and liquid in the vertical wellbore, and study the relationship between the working efficiency and gas flow of the gas lift pipe under the condition of the same pipe length, pipe diameter and submersion degree, so as to understand the principle of self-injection and gas lift.
In the vertical pipe flow, along the wellbore from bottom to top with the continuous reduction of pressure, when the pressure is lower than the saturation pressure, the gas is continuously separated from the crude oil, the separated gas in the process of rising along the wellbore continue to release elastic expansion energy, the energy involved in lifting the liquid and work. The use of gas expansion energy lifting liquid, relying on two effects, one is the gas acting on the liquid vertical push liquid up; the other is the friction between the gas and liquid, the gas carrying liquid up. In order to minimize the consumption of gas energy in the process of lifting oil out of the well and to achieve the purpose of improving efficiency, the best working system of the well must be selected.
Main technical parameters of 2.
1. Temperature: normal temperature
2. Pressure: ≤ 0.6MPa
3. Flow rate: 0~0.36 m3/min
4. Gas-liquid two-phase system
5. Simulation height: 4m (or customizable)
6. Simulated tubing: 30mm