Press Esc to close



For full content view: Log in Now!

  • New products

    AnTech Ltd introduced the latest addition to its range of logging tools with the launch of its new 7/8-in. Logging Head, along with the company's new Casing Collar Locator (CCL). The Logging Head and CCL work together to pinpoint location and positioning of casing downhole by sensing the tubing joints. Fitting the CCL with rare earth magnets offers stronger signal strength and sensitivity, so that it is capable of locating joints with greater accuracy. With its extremely small diameter, the new AnTech Logging Head-CCL system is suited for back-off operations in slimhole applications. Also the head could be used in coiled tubing operations where the BHA has become stuck and the release has failed or is not present. The system can be used in temperatures to 200°C and pressures of 20,000 psi.

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