Alternate Steps to Improve SAGD Produced Water Treatment
By Rafique Janjua, P.E.
Oil field produced water recovery and its treatment can be challenging and expensive, depending on the intended reuse. For example, produced water treatment required for overboard outfall from offshore platforms compared to water flooding for enhanced oil recovery or steam flooding requires different technologies, and can be progressively more expensive. This article discusses how the prevailing technologies used in steam assisted gravity drain (SAGD) produced water treatment can be improved, either by combining, or outright replacement of some operating units. This can be done through the use of a chemical processes that can successfully treat oilfield water. Types of oilfield water and processes used for its treatment. Here is a brief overview of oilfield waters requiring treatment: 1. Contaminated or potentially contaminated water (e.g., collection, suspended solids removal, and skimming of free and floating oil). 2. Reservoir formation produced water (e.g., in-line de-sanding/de-oiling hydro cyclones, equalization, free and floating oil skimming, CPI separators, and induced gas flotation/dissolved gas flotation [IGF/DGF] suspended solids removal). 3. Produced water from water flooding (e.g., in-line de-sanding/de-oiling hydrocyclones, equalization, free and floating oil skimming, CPI separators, IGF/DGF, and filtration).
Log in or Subscribe to Access the Full Article
To read or download full-length articles you need a subscription to Ultrapure. Please log in or subscribe below.