Would you like to start a free subscription?
Remember me | Forgot password
For full content view: Log in Now!
With a large percentage of the world’s known hydrocarbon reserves located in carbonate reservoirs, the push to increase production has revealed a need to improve oil saturation calculations in carbonate transition zones.
Numerous attempts have been made to modify the famous Archie equation’s a, m and n parameters to derive a saturation that more closely matches core saturation measurements, but these have met with limited success. Rather than continue this approach, a different model of the pore and fluid distribution has been proposed and field proven. The latest model is to change the saturation evaluation to a volume measurement and acquire that measure prior to significant invasion. Adding sigma measurement to LWD enables this. Using this approach, recent field examples show more hydrocarbons than indicated by resistivity or pressure gradient methods.
Carbonate transition zones exhibit resistivity and pressure gradient phenomena that respond like water zones to resistivity and pressure gradient measurements.
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.
New Delhi - January 11-14
Muscat - January 26-29
Bogota - January 28-29
All material subject to strictly enforced copyright laws.
© 2014 World Oil. © 2014 Gulf Publishing Company.