MIDSTREAM

The water separated from oil emulsion using a de-emulsifier is an effluent, which should be environmentally acceptable for disposal, or suitable to re-injection into the reservoir. Any effluent (oily water) discharged in the environment should comply with a current governmental maximum specification for oil in water. In addition to demulsifies used in onshore or offshore production units or in refineries, the residual oil in water has to be separated in a specific effluent treatment plant using deoilers.

Deoilers can be flocculants or coagulants. RASIONIC provides innovative and suitable deoilers along with relevant technical assistance to help produce water with the lowest oil content in accordance with the highest HSE standards. Our worldwide technical network provides you with immediate local support to assess your water quality requirements and any related problems in your production systems, and to evaluate the possibility of offering you other services in addition to oil-in-water separation.

Deoiler enhances bulk oil/water separation for the purpose of facilitating downstream oil removal. These deoilers are uniform liquids free from visible impurities and are soluble in water in all proportions. They separate two liquids having different specific gravities. They also separate and remove a range of oils from water including hydrocarbon oil and fuel, mineral oils, vegetable oils, animal fats and oils and fish oil.

Scaling is the formation of deposits from the water-soluble constituents. As water concentrates in the cooling water system due to recycle (operation at higher COCs), the saturation limits of hardness salts (and some others) are exceeded and precipitate in the system leading to deposit formation. This can reduce heat transfer directly affecting the production efficiency. 

Fouling is the deposition of water insoluble constituents like dirt, sand, silt, oil, corrosion products and the like. The problem is aggravated in low velocity areas and besides deposit build up, can also result in under deposit corrosion. Cooling water systems are an ideal environment for the growth of microbes.  The pH is ideal for their growth.  There is an abundance of nutrients and sunlight leading to their proliferation. If uncontrolled they can lead to voluminous slime build up, fouling and corrosion.