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For the trade press
Siemens Water Technologies to Supply Produced Water Treatment System at
Saudi Aramco’s Safaniya Plant
Warrendale, 2007-08-28
ENPPI has selected Siemens Water Technologies to provide a produced water
treatment system as part of an expansion at Saudi Aramco’s Safaniya plant in the
Eastern Province, Saudi Arabia. The new system will remove high concentrations
of free oil from the water stream with the dissolved gas flotation (DGF) method
from Siemens, so the water can be used for subsurface re-injection. The capacity
will be 850,000 barrels of water per day (BWPD). The project is scheduled to
begin operation mid-year 2008.
Produced water treatment plants are used around the world to meet discharge and
injection water quality standards set by governing bodies of the respective countries.
Saudi Aramco uses injected water to maintain reservoir pressure to maximize oil
production. Presently, the system handles Arab Heavy crude oil and formation water
from the Safaniya oil field and Arab Medium crude oil from Zuluf oilfields. The formation
water from both fields is processed and then re-injected.
Produced water treatment systems using Monosep dissolved gas flotation (DGF) pump
technology from Siemens allow for the efficient separation of oil from water. The
equipment occupies a smaller footprint than comparable flotation technologies.
Siemens Water Technologies provides the plant with produced water treatment systems
which consist of vessels using the proprietary DGF pump technology. The DGF pump
is the heart of the system. It works by using a dual sided impeller that pulls both water
and gas into the pump volute. The backside of the impeller has a “sub-atmospheric”
zone that pulls vapor from the blanket gas source or other means and allows mixing
with the incoming fluid. As this mixing occurs, the vapor is dissolved into the water
creating micro-fine bubbles that break out of solution once a pressure drop is
experienced. This pressure drop occurs once the fluids and dissolved gas are flowed
across a globe valve prior to entrance into the flotation vessel. Due to the close
tolerance between the back vanes of the impeller and the back plate of the DGF pump,
the vapor is sheared into micro-fine bubbles piped into a vessel or tank allowing the fine
gas bubbles to attach to the oil droplets. As the gas bubble attaches to the oil droplet,
the droplet floats to the surface at an accelerated rate.
This is Siemens Water Technologies’ first use of the DGF pump system on a Saudi
Aramco project, but is only the latest of the large projects Siemens Water Technologies
has under fabrication for Saudi Aramco.
Engineering for the Petroleum and Process Industries (ENPPI) headquartered in Cairo,
Egypt, is the EPC for Saudi Aramco on this project.
Monosep is a trademark of Siemens and/or its affiliates in some
countries.
Siemens Water Technologies delivers cost-effective, reliable water and
wastewater treatment systems
and services to municipal, industrial, commercial and institutional
customers worldwide. The division
“Water Technologies” is part of Siemens' Industrial Solutions and
Services Group (I&S) which is a
system and solution provider for industrial and infrastructure
facilities and global service provider for the
plant and projects business covering planning, installation, operation
and the entire life cycle. In fiscal
2006 (to September 30), I&S employed a total of 36,200 people worldwide
and achieved total sales of
EUR 8.819 billion, according U.S. GAAP.
More information and downloads under:
 www.siemens.com/water
| Reference number: I&S 0507.6210 e |
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