Press Esc to close



For full content view: Log in Now!

  • Microbial enhanced oil recovery techniques improve production

    S. Mokhatab and L. Giangiacomo

    A potentially inexpensive method, Microbial Enhanced Oil Recovery (MEOR), may prove useful and economical. Most conventional oil recovery processes are only able to retrieve from 15 to 50% of the available oil in the reservoir. The utilization of this technology can extend the average well life without increasing excessive lifting costs. As MEOR effects chemical changes in the reservoir, it is an environmentally compatible method of carrying out tertiary oil recovery. MEOR will become increasingly economically feasible as genetic engineering develops more effective microbial bacteria that may subsist on inexpensive and abundant nutrients. This article will review how the microbe works to improve oil recovery, evaluating the potential gain in oil production versus treatment cost, and identify applications and potential advancement of MEOR. TERTIARY RECOVERY Recovering oil usually requires three stages. Primary recovery typically recovers 10 to 35% of a reservoir’s oil-in-place. Secondary recovery, which most often involves waterflooding, can increase recovery by 20% or more.

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