|Publisher||Society of Petroleum Engineers|
|Content Type||Conference Paper|
|Title||The MEG (Mono Ethylene) Injection Gas Dehydration Process Evaluation for the Margarita Field Development|
Moises Alfredo Vergara Contreras and Nicolas Foucart, Repsol YPF
Latin American & Caribbean Petroleum Engineering Conference, 15-18 April 2007, Buenos Aires, Argentina
2007. Society of Petroleum Engineers
4.1.2 Separation and Treating
4.1.4 Gas Processing
4.10.1 Onshore Projects Planning and Execution
The dehydration process based on TEG is the most common process for natural gas dehydration; it is an efficient technology and its operation is very well known.
In order to reduce the CAPEX and OPEX of the Project, the operator has studied potential process options. One way to optimize the gas dehydration process is by simplifying and combining it with other processes, which is the case when considering the combined MEG injection with mechanical refrigeration, a common practice in the Industry.
The scope of this report covers:
The MEG Injection together with a Dew Point Plant is able to dehydrate the natural gas, because the chiller unit operates at low temperatures and it permits the water content of the gas to be condensed and removed in "cold separation", but this process requires inhibitor injection in order to avoid hydration formation, being glycol the usual inhibitor. Removing the Contactor Tower and changing TEG by MEG has little impact in the Dew Point Plant design. The additional power required in the propane compressor is compensated in the glycol pump which is lower power consumption because the MEG injection rate is lower than the TEG one.
The different aspects evaluated between MEG Injection and Contactor Tower
with TEG, are favorable toward the MEG Injection as:
After taking in consideration all the points in favor of the MEG Injection, it is recommended to install it in the Gas Treatment Plant.
|File Size||423 KB|