Would you like to start a free subscription?
Remember me | Forgot password
For full content view: Log in Now!
Drilling in troublesome shallow gas areas represents one of the most risky activities in the oil industry. This is the case for Petróleos de Venezuela, S.A. (Pdvsa), in drilling Miocene and Eocene reservoirs in some areas in Lake Maracaibo in western Venezuela.
For years, drilling activity in Lake Maracaibo has been performed with cantilever barges using conventional drilling equipment and standard procedures, with a contingency plan to mitigate the risk of influx and subsequent well control events. Part of this contingency plan is to drill a pilot hole through the gas zone. The pilot hole then is under-reamed and cased. The time to construct the well is long and the number of trips required is high. Statistics indicate that most of the well control events occur during tripping operations.
Another area with shallow gas is Venezuela’s onshore La Vela and Cumarebo Fields, where drilling activity was deferred...
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.
Aberdeen - December 2-3
Calgary - December 8-8
Mangaf - December 8-10
All material subject to strictly enforced copyright laws.
© 2014 World Oil. © 2014 Gulf Publishing Company.