Press Esc to close



For full content view: Log in Now!

  • How to identify underground blowouts

    N. Adams

    In the most basic terms, our impulse is to use our sensory perception to identify a surface blowout. Do you see a fire, the flow, equipment leak, smoke, pollution or damage? Sometimes we can hear, smell, and even feel the blowout. But in the case of an UnderGround BlowOut (UGBO), sensory perception cannot be used to identify it, unless it evolves into a surface event. Even after 35 years of worldwide well-control experience, my ability to see underground is not any better than yours. Different assessment methods must be used. These include surface pressure evaluations, logging techniques and a thorough understanding of the well’s history and geology. Perhaps you just said to yourself, “Yeah, but anyone can read a temperature log.” Hopefully, you’ll reserve your opinion on that until you read this article. In the most basic terms, our impulse is to use our sensory perception to identify a surface blowout.

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