Press Esc to close



For full content view: Log in Now!

  • New products

    Christmas tree gauge Houston-based Winters Instruments has introduced a heavy-duty tree gauge. This 4-in. (100-mm) gauge is used in severe conditions where rugged construction is required. The gauge features ±1% ANSI/ASME Grade A full-scale accuracy and stainless steel composition for the case, ring, socket and Bourdon tube to withstand corrosive environments, and an adjustable aluminum micrometer pointer. A restrictor screw is standard. Ranges are from 1,000 to 20,000 psi. The Christmas tree gauge is available with optional safety glass, safety case, fill fluids and Winters Stabilizer pointer movement feature. Expandable reamer. The GaugePro XPR expandable reamer is a concentric hole enlargement tool for use in applications ranging from the simplest to the most complex deepwater project. The dependable ball-drop mechanism activates the cutter blades, which are deployed with fluid circulation and deactivated when circulation is stopped. This design eliminates premature triggering independent of WOB, flow or BHA pressure.

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