API PUBL 4702-2001

$37.70

Technology to Reduce Oil and Grease Content of Well Treatment, Well Completion, and Workover Fluids for Overboard Disposal

Published By	Publication Date	Number of Pages
API	2001	86

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Description

The flowback of non-produced fluids to surface de-oiling facilities on offshore platforms can create severe process upsets. Consequently, meeting oil and grease (O&G) effluent limits during flowback presents a serious challenge to the oil and gas industry. To meet this challenge, the industry is considering point source treatment options for non-produced fluids. In order to respond to industry's needs, the American Petroleum Institute (API) supported the present technology evaluation and development project. Promising technologies to reduce O&G concentrations in non-produced fluids were identified, reviewed, and investigated. The performances of selected technologies, including granular activated carbon adsorption, polymer-modified clay adsorption, iron-catalyzed hydrogen peroxide advanced oxidation, liquid-liquid extraction, electro-coagulation, and membrane filtration processes were accessed at laboratory scale. Based on laboratory scale process performance data, technology development was further pursued on granular activated carbon adsorption and polymer-modified clay adsorption at bench scale. The granular activated carbon process was shown effective in meeting O&G effluent limits. Treatment by polymer-modified clay adsorption did not meet O&G discharge objectives.

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