Water treatment for one of the world's largest oilfields

The project covers the engineering, procurement and workshop construction of the produced water treatment and sludge thickening and dewatering package. (Image source: Cannon Artes)

Industry

Cannon Artes has supplied a produced water treatment package for a project installed in West Qurna, Iraq

West Qurna-2, located near Basra, Iraq, is one of the world’s biggest onshore oil fields.

The project, owned and operated by Lukoil (75%) and North Oil Company (NOC, 25%), Iraq’s state-owned company, was first commissioned in March 2014 and is being developed in two phases.

This oilfield’s total estimated reserves equate to 14bn barrels. During the second phase, Lukoil and NOC aim to achieve a total production capacity of 800,000 bpd by 2025.

The project covers the engineering, procurement and workshop construction of the produced water treatment and sludge thickening and dewatering package, treating a total flow rate of 1,320 cu/m per hour, equal to nearly 200,000 bpd. The plant is close to being handed over to the client.

The main aim of the unit is to reduce the significant inlet oil and suspended solids content to negligible levels while maintaining a low concentration of dissolved oxygen to enable reinjection into the oilfield, assuring steady oil production.

Because of the oil droplets’ small size, with most particles well below 20 microns, and the suspended solid particle size distribution, this application is particularly challenging. For this reason, a specific section is implemented to increase the size of the flocs and allow for effective separation.

Furthermore, the inlet-produced water contains high levels of chlorides and hydrogen sulfide (H2S), which requires using high alloy metals and sour service conditions.

The produced water treatment system is composed of the following:

CPI (Corrugated Plate Interceptor)

FlotArt, Induced Gas Flotation (IGF), the best choice when removing free oil and fine solids from water is required

NutArt nutshell filters are the ideal solution for oily water polishing treatment with a high removal efficiency of suspended solids (TSS) and free oils

Final polishing with cartridge filters.

“We are particularly proud of being on board this milestone project and thank Sicim and Lukoil for trusting our company. This job enables us to further deploy our proprietary FlotArt® flotation and NutArt® nutshell filtration technologies and consolidate our 20-year-long experience in produced water treatment,” said Alessio Liati, sales director at Cannon Artes.

Cannon Artes is exhibiting at ADIPEC, taking place from 2-5 October in Abu Dhabi, at Stand 2212.