Strive to operate at the optimum point unless the system optimization dictates otherwise. Use the recommended practices in Section 5.1 that are common to all challenging gas-lift applications. The following items, if any, are unique to high or ultra high pressure offshore, dry tree gas-lift wells. Practices for System Optimization Gas-lift wells almost never operate alone; they operate as part of a system. In a gas-lift system, there is rarely just enough gas to operate all wells at their optimum rates. Normally, there is either too little gas or too much. Start by determining the gas-lift performance curve, and the minimum, maximum, and optimum injection rates for each well. Develop and optimization which contains each well in the system. For each well, determine its economic production at each injection rate, starting at the highest rate and working down to the minimum rate for the well. If is more gas available than needed to produce each well at its economic optimum rate, add gas to those wells that show the largest gain with the added injection. If a well reached its maximum rate and gas must still be used, use it for other wells, or use the gas in some other way such as sales or flare. Do not over-inject gas into wells as they may become unstable and both gas and energy will be wasted. If there is less gas available than needed to produce each well at its economic optimum rate, remove gas from those wells that lose the least with the reduced gas. If a well reaches its minimum rate and gas must still be removed from the system, stop injection into the well rather than allow it to become unstable. Use the recommended practices in Section 5.1 that are common to all challenging gas-lift applications. The following if any, are unique to high or ultra high pressure offshore, dry tree gas-lift wells. Maintenance Gas-lift systems employed in challenging applications must be continuously maintained to assure system integrity for safety, environmental protection, and successful economic operation.
Strive to operate at the optimum point unless the system optimization dictates otherwise. Use the recommended practices in Section 5.1 that are common to all challenging gas-lift applications. The following items, if any, are unique to high or ultra high pressure offshore, dry tree gas-lift wells. Practices for System Optimization Gas-lift wells almost never operate alone; they operate as part of a system. In a gas-lift system, there is rarely just enough gas to operate all wells at their optimum rates. Normally, there is either too little gas or too much. Start by determining the gas-lift performance curve, and the minimum, maximum, and optimum injection rates for each well. Develop and optimization which contains each well in the system. For each well, determine its economic production at each injection rate, starting at the highest rate and working down to the minimum rate for the well. If is more gas available than needed to produce each well at its economic optimum rate, add gas to those wells that show the largest gain with the added injection. If a well reached its maximum rate and gas must still be used, use it for other wells, or use the gas in some other way such as sales or flare. Do not over-inject gas into wells as they may become unstable and both gas and energy will be wasted. If there is less gas available than needed to produce each well at its economic optimum rate, remove gas from those wells that lose the least with the reduced gas. If a well reaches its minimum rate and gas must still be removed from the system, stop injection into the well rather than allow it to become unstable. Use the recommended practices in Section 5.1 that are common to all challenging gas-lift applications. The following if any, are unique to high or ultra high pressure offshore, dry tree gas-lift wells. Maintenance Gas-lift systems employed in challenging applications must be continuously maintained to assure system integrity for safety, environmental protection, and successful economic operation.