          |
|
|
Acoustic Determination of Bottomhole Pressures in Gas Lift Wells
Producing and static bottomhole pressures in gas lift wells are useful in designing and operating gas lift installations. The static bottomhole pressure can be accurately measured in the normal gas lift well using an acoustic liquid level instrument. Procedures are provided that explain how the producing bottom hole pressure can be determined for various configurations of gas lift installations. Tables and charts are presented for rapid determination oil, liquid, and gas gradients.
The static and producing bottomhole pressures offer valuable information for selecting a gas lift valve installation. The static bottomhole pressure is beneficial for selecting the top valve setting depth. The flow characteristics given by the static and producing bottomhole pressures are useful in selecting the depths for additional valves, determining gas injection rates, and optimizing the gas injection system. Gas lift efficiency can be determined and the flow rate at any producing bottom hole pressure can be determined by using an inflow performance curve.
Download (PDF: 561 KB / 4 pages)
