13 May 2015

At the Main Transfer Pumping Station (MTPS) of West-Mogutlor oil field (OJSC Aganneftegasgeologia), there has been in full commissioned an associated gas treatment system (APG TS), supplied by the ENERGAS Company. It is a multifunctional process complex, it includes the following equipment:

• booster compressor unit of screw type;
• adsorption gas dryer;
• gas cooling unit (chiller);
• gas metering station with flow meters.

ENERGAS experts developed this project on the basis of engineering solutions, allowing to achieve negative dew point temperature on water (-20°C) while APG compression. Another feature is that dehydration of associated gas is carried out by two methods: refrigeration and adsorption.

All equipment is located at a single site, is placed in separate all-weather enclosures and fully automated. Operation mode as part of MTPS is continuous.



APG TS sequentially performs the following process tasks:

1. Dehydration – separating fractions from source associated gas which can dropout as condensate when temperature changes during the subsequent compression.
2. APG second-stage treatment at gas inlet to the compressor unit. It is implemented by high efficiency separator – inlet filter-scrubber.
3. Compression – increase of gas pressure to the projected level of 3 MPa required for injection of APG into the transport pipeline.
4. Metering of treated gas amount.
5. Cooling of associated gas up to the stable parameters, specified by design requirements.

Phased APG TS commissioning has been performed by the technicians of ENERGAS Group. Service engineers carried out erection supervision, start-up and adjustment works, own testing and integrated check of equipment as part of the facility.

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