How is a Gas Lift Well Started, Unloaded and Optimized?

⚙️ In this video, you will learn: 🔹 Gas Lift well pre-start checks 🔹 Gas Lift compressor and injection-system readiness 🔹 Wellhead valve line-up 🔹 Injection pressure and flow verification 🔹 Production flowline readiness 🔹 Starting high-pressure gas injection 🔹 How gas enters the casing annulus 🔹 Pressure build-up in the annulus 🔹 How a Gas Lift well begins to unload 🔹 Role of unloading gas-lift valves 🔹 Sequential unloading through gas-lift valves 🔹 Movement of the injection point deeper into the well 🔹 Transition to the operating gas-lift valve 🔹 How injected gas enters the production tubing 🔹 Reduction in fluid-column density 🔹 Reduction in hydrostatic head 🔹 Establishment of stable well flow 🔹 Injection-gas rate monitoring 🔹 Tubing and casing pressure monitoring 🔹 Wellhead pressure monitoring 🔹 Production-rate monitoring 🔹 Gas Lift performance optimization 🔹 Identifying abnormal operating conditions 🔹 Importance of maintaining stable gas injection 🔄 Gas Lift Start-Up & Unloading Sequence Pre-Start Checks ⬇️ Open / Line Up Production System ⬇️ Start Gas Injection ⬇️ Casing Pressure Builds Up ⬇️ Upper Unloading Valve Opens ⬇️ Fluid Level Moves Downward ⬇️ Successive Gas-Lift Valves Unload the Well ⬇️ Injection Point Moves Deeper ⬇️ Operating Gas-Lift Valve Takes Over ⬇️ Gas Mixes with Produced Fluid ⬇️ Fluid Density & Hydrostatic Head Reduce ⬇️ Stable Production Established 💨 How Does Gas Lift Unloading Work? During initial start-up, the production tubing and annulus may contain significant liquid head. High-pressure injection gas enters the casing annulus and progressively forces the fluid level downward. As the required differential pressure is reached, gas enters the tubing through the appropriate unloading gas-lift valve. As unloading continues, the injection point progressively transfers to deeper valves until the designed operating valve becomes the primary injection point. Once stable operation is achieved, gas injected through the operating valve mixes with the produced fluids and reduces the average density of the tubing fluid column. 📊 Important Parameters to Monitor Operators typically monitor key parameters such as: • Gas Injection Pressure • Gas Injection Rate • Casing Pressure • Tubing Pressure • Wellhead Pressure • Production Rate • Produced Gas Rate • Oil & Water Production • Compressor Operating Conditions • Well Stability Changes in these parameters can provide valuable indications of the performance of the gas-lift system and the producing well. 📈 Gas Lift Optimization Injecting more gas does not necessarily mean maximum oil production. Gas Lift performance depends on the relationship between: Injection Gas Rate ↔ Fluid Density ↔ Friction Loss ↔ Bottom-Hole Pressure ↔ Production Rate The objective is to identify an appropriate injection rate that provides efficient lift while avoiding unnecessary gas circulation and excessive frictional pressure losses. This makes Gas Lift Optimization an important part of production engineering. 🛢️ PetroTech 3D Oil & Gas Engineering Explained Upstream • Midstream • Downstream Learn complex Oil & Gas equipment, well operations, artificial-lift systems and petroleum engineering concepts through professional 3D technical animations. 👍 Like | Share | Subscribe 🔔 #️⃣ Hashtags #GasLift #GasLiftOperation #GasLiftSystem #GasLiftUnloading #GasLiftOptimization #ContinuousGasLift #GasLiftValve #ArtificialLift #ArtificialLiftSystems #GasInjection #OilProduction #WellProduction #OilWell #PetroleumEngineering #ProductionEngineering #WellOperations #UpstreamOilAndGas #OilAndGas #OilGasEngineering #GasLiftCompressor #ProductionOptimization #PetroleumTechnology #3DAnimation #EngineeringAnimation