Open Access. Powered by Scholars. Published by Universities.®
- Discipline
Articles 1 - 2 of 2
Full-Text Articles in Entire DC Network
An Improved Method To Calculate Gas-Lift Valve Set Pressure And Valve Performance Curves, Khadhr A Kh Altarabulsi
An Improved Method To Calculate Gas-Lift Valve Set Pressure And Valve Performance Curves, Khadhr A Kh Altarabulsi
LSU Doctoral Dissertations
The main objective of this work is toimprove the accuracy on calculations of design set pressure and performance curves (sizing equations) for Gas-Lift Valves (GLVs) at high pressure (real conditions). This improved calculation method is demonstrated to have an important effect on well unloading and production operations.
The analysis of the valve design set pressure includes an experimental evaluation of the effect of internal dome volume changes on the design set pressure due to the presence of silicone and thermal effects. The evaluationis carried out for different levels of GLV silicone fill, pressures and temperatures. Silicone fills covered 7.5, 10, …
Experimental And Numerical Investigation Of Liquid-Assisted Gas-Lift Unloading, Renato Peixoto Coutinho
Experimental And Numerical Investigation Of Liquid-Assisted Gas-Lift Unloading, Renato Peixoto Coutinho
LSU Doctoral Dissertations
The case for a unique form of gas-lift unloading, termed “Liquid-Assisted Gas-Lift (LAGL),” is presented. This work demonstrates that the injection of a gas-liquid mixture allows transport of gas to a deep injection point utilizing injection pressure considerably lower than single-phase gas injection. The LAGL is demonstrated in a 2,880 ft deep test well. The test well is kicked-off using an injection pressure that would normally be lower than the pressure for single-point single-phase gas injection at this depth. Experimental results indicate that the LAGL can lower the injection pressure by up to 75%.
This work breaks the LAGL system …