Would you like to start a free subscription?
Remember me | Forgot password
For full content view: Log in Now!
The previous segment in this series indicated that a multitude of promising lab-scale studies of CO2 foams for conformance and/or mobility control have been published. Thirteen field tests of CO2 foams occurred between the mid-1980s and mid-1990s. This decade-long experiment provided valuable insights into the technical strengths and weaknesses of CO2 foams for mobility and conformance control in sandstone and carbonate formations to recover additional oil. The majority of field tests involved the use of alternating slugs of aqueous surfactant solution and CO2 (surfactant-alternating-gas, or SAG). Although much of the lab-scale work on CO2 foams was related to mobility control, 11 of the 13 field trials were designed primarily to achieve near-wellbore conformance control due to many factors: shorter duration of the conformance control treatment, higher likelihood that the CO2 would mix thoroughly with the previously injected surfactant slug in high-permeability zones near the wellbore, possible deleterious effects of high oil saturation on foam stability during mobility control tests, and ability to generate strong near-wellbore foams by increasing the surfactant concentration.
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.
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:
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 CustomerService@worldoil.com.
World Oil's specialized upstream Engineering Data Tables featuring the Drill Bit Classifier, Tubing Tables and more. Get Total Access today.
Houston, TX - November 4-5
All material subject to strictly enforced copyright laws.
© 2014 World Oil. © 2014 Gulf Publishing Company.