Press Esc to close



For full content view: Log in Now!

  • Progress made in removing water soluble organics from GOM produced water

    P. R. Hart

    Oilfield produced water contains a diverse mixture of compounds that varies from formation to formation. Of particular importance are the organic compounds classified as “Oil and Grease” (O&G) by the Clean Water Act. O&G must be removed to meet environmental, political and operational goals. Excessive O&G in re-injected water can foul the equipment or the formation. Discharged water must meet legal or contractual standards. The O&G in water discharged to the Gulf of Mexico (GOM) is limited to a 29-mg/L yearly average. THEORY AND DEFINITIONS For the purpose of discharge, O&G is a legal category. It comprises the residue of compounds that extract into n-hexane from water at pH < 2, after boiling away the solvent.2 The EPA uses ALOLA (a lot of long acronyms) to categorize different portions of this material. The term “Water Soluble Organics” (WSO) is often used to describe the polar, non-strictly-hydrocarbon portion of the O&G compounds, which adsorb onto silica gel.

This area of the site is restricted. In order to gain access, please either Log In, or subscribe to World Oil.

Two options are available to you for creating an account.

1. Get a Free Trial Subscription to World Oil Magazine and gain immediate access to select content on World Oil Online.

Start a Free Trial Subscription and gain immediate access to the complete current issue of World Oil Magazine. Plus, you’ll receive 3 upcoming issues of World Oil Magazine in print or digital format.* You also receive access to the Energy Events Calendar, Industry Statistics and WO Wire’s news and industry coverage.

Free Trial

2. Purchase a subscription to World Oil magazine and gain immediate and complete access to World Oil Online. As a Total Access subscriber you will have access to all areas of the site available to registered users and free subscribers as well as having access to such premium content areas as:

  • The Archives section containing over ten years of complete magazine archives,
  • The WO DataHub's engineering tables and directories,
  • The World Oil annual forecasts, including past predictions,
  • Select World Oil technical handbooks,
  • And much, much more!


Physical copies of this content may be available for purchase. Visit the Reprints & Back Issues section.

If you are already a paid subscriber and do not have access, please email



Engineering Data Tables

World Oil's specialized upstream Engineering Data Tables featuring the Drill Bit Classifier, Tubing Tables and more. Get Total Access today.


2013 Fracturing Technology

2013 Fracturing Technology