Press Esc to close

WorldOil

CONTENT PREVIEW

For full content view: Log in Now!

  • What’s new in exploration


    Nina M. Rach

    Neutron sources are a mainstay in the geophysical toolbox; neutron-based tools are used to determine several formation parameters, particularly porosity. For the last 70 years, the industry has relied on the alpha reaction to produce neutrons downhole, requiring the use of highly radioactive elements with potential radiation hazards for operators. Project cost can rise tremendously if a radionuclide source is lost downhole, requiring a well to be plugged and abandoned. For example, 426 sources were reported as lost downhole in Texas alone between 1956 and 2001, according to a 2010 report from the Pacific Northwest National Laboratory.

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!

Subscribe


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.

WO DATA HUB

EngineeringTablesIcon-Large

Engineering Data Tables

World Oil's specialized upstream Engineering Data Tables featuring the Drill Bit Classifier, Tubing Tables and more. Get Total Access today.

WO SUPPLEMENTS

2013 Fracturing Technology

2013 Fracturing Technology

ENERGY EVENTS