Sulfate removal technologies for oil fields seawater injection operations

Bader, M.S.H.

doi:10.1016/j.petrol.2006.04.010

Cited by 96 publications

(43 citation statements)

References 20 publications

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“…[13] Unlike previously reported ligands used for sulfate crystallizations, [6,15] which require cumbersome syntheses and purifications involving toxic reagents and solvents,t he GBAH ligand can be generated in situ in pure water from simple subcomponents,w hich makes for am ore practical, cheaper, and greener anionseparation method. [18] Sulfate is also ap roblematic constituent of legacy nuclear wastes, [3] which could be targeted for sulfate separation alongside the more abundant nitrate.W eenvision that this crystallization approach could be applied to either the individual separation of sulfate or nitrate or amixture of the two anions,d epending on the practical need and the solution composition. Fore xample,b oth sulfate and nitrate can pose environmental problems as they are the main constituents of acid rain and can contaminate the groundwater.…”

Section: Methodsmentioning

confidence: 99%

“…[17] Thep resence of sulfate in seawater presents challenges for oil field injection operations because of scale formation. [18] Sulfate is also ap roblematic constituent of legacy nuclear wastes, [3] which could be targeted for sulfate separation alongside the more abundant nitrate.W eenvision that this crystallization approach could be applied to either the individual separation of sulfate or nitrate or amixture of the two anions,d epending on the practical need and the solution composition.…”

Section: Methodsmentioning

confidence: 99%

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Aqueous Sulfate Separation by Crystallization of Sulfate–Water Clusters

2015

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An effective approach to sulfate separation from aqueous solutions is based on the crystallization of extended [SO4(H2O)5(2-)]n sulfate-water clusters with a bis(guanidinium) ligand. The ligand was generated in situ by hydrazone condensation in water, thereby bypassing the need for elaborate syntheses, tedious purifications, and organic solvents. Crystallization of sulfate-water clusters represents an alternative approach to the now established sulfate separation strategies that involve encapsulation of the "naked" anion.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Aqueous Sulfate Separation by Crystallization of Sulfate–Water Clusters

2015

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“…Sulphate extraction is carried out in oil production processes where seawater is routinely injected into oilfields to maintain pressure. The incompatibility of oil field formation waters and untreated seawater causes formidable sulphate scaling problems that are prevented by stripping the sulphate from the seawater (Bader, 2006(Bader, , 2007.…”

Section: Implications For Mineral Sequestration Of Carbon Dioxidementioning

confidence: 99%

Dissolution of basalts and peridotite in seawater, in the presence of ligands, and CO2: Implications for mineral sequestration of carbon dioxide

Wolff-Boenisch

Wenau

Gíslason

et al. 2011

Geochimica et Cosmochimica Acta

104

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“…This typical incompatibility causes unusual severe sulfate scale problems in the forms of calcium, strontium or barium (Bader, 2007). A solution can be the removal of sulphate ions from seawater before injection; this also helps prevent well souring by controlling sulphate reducing bacteria, which can be accomplished by the filtration of particulates down to the nanometer range.…”

Section: Oil-field Applications Of Nanofiltrationmentioning

confidence: 99%

Nanotechnology-Assisted EOR Techniques: New Solutions to Old Challenges

2012

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Enhanced Oil Recovery techniques are gaining more attention worldwide as the proved oil reserves are declining and the oil price is hiking. Although many giant oil reservoirs in the world were already screened for EOR processes, the main challenges such as low sweep efficiency, costly techniques, possible formation damages, transportation of huge amounts of EOR agents to the fields especially for offshore cases, analyzing micro-scale multi-phase flow in the rock to the large scale tests and the lack of analyzing tools in traditional experimental works, hinder the proposed EOR processes. Our past experiences on using nanotechnology to the upstream cases, especially EOR processes, revealed solutions to some of the challenges associated with old EOR techniques. This method that utilizes particles in the order of 1 to100nm brings specific thermal, optical, electrical, rheological and interfacial properties which are directly useful to release the trapped oil from the pore spaces in the order of 5 to 50 microns of tight oil formations. Laboratory tests using nanoparticles as the EOR agent, developing nano computational models to explore the surface properties and utilizing nano-scale analyzing tools such as atomic force microscopy (AFM), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) mostly for nanoparticles distribution in the pore spaces and on the surfaces for wettability alteration studies are the main parts of this investigation. This paper summarizes new findings from several different theoretical, analytical and experimental works which shows the effectiveness of traditional methods when assisted by this new technology. Ultimately, based on the past experiences, a roadmap will be proposed to avoid the ongoing trial and error practice in this area.

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Sulfate removal technologies for oil fields seawater injection operations

Cited by 96 publications

References 20 publications

Aqueous Sulfate Separation by Crystallization of Sulfate–Water Clusters

Aqueous Sulfate Separation by Crystallization of Sulfate–Water Clusters

Dissolution of basalts and peridotite in seawater, in the presence of ligands, and CO2: Implications for mineral sequestration of carbon dioxide

Nanotechnology-Assisted EOR Techniques: New Solutions to Old Challenges

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