TREATMENT OF PRODUCED WATER FROM ADAR-YLE CRUDE FOR WELL INJECTION

Abstract

The main purpose of this thesis is to suggest a water treatment unit for treating the water produced from crude oil in Adar-yle field and recycle it for well injection, thus increasing the oil recovery from well through rising pressure. Moreover, it is considered an effective solution for environmental pollution in the production area. In this way, the unit will lead to an increase in the productivity of the well, as well as solve the pollution problem resulting from reinjection of the produced water. Survey had been done to identify the specification of required water for well injection to be the base of design for the proposed unit, which can be summarized in the control of the following:- I Oil content in water. I Suspended solids content in water. I Bacterial account in water. I Hydrogen number PH. I Dissolved oxygen in water. Three samples had been taken and analyzed to determine the above mentioned parameters to be compared with the allowed limits. The proposed unit consists of the following: I Produced water sedimentation tank: to reduce the suspended solids and turbidity by gravity settling. I Multi Media Filter; to remove the most of the suspended solids presents in the raw Produce feed Water and acts as a secondary oil removal process unit. Deoiler Hydro cyclone; to separate oil from water by centrifugation. Cartridge Filter; for final polishing and to ensure that the final treated produced water does not contain particles exceeding 4 microns in size. Biocide dosing is required to prevent the bacterial growth which is considered the main producer of acids and which cause corrosion. Oxygen scavenger also is required to exclude the oxygen from water to avoid the injectivity reduction and corrosion. Three treated samples had been analyzed after treatment and found that it 1S compatible and meet the required parameters for water injection.