Press Esc to close



For full content view: Log in Now!

  • New rig construction targets onshore unconventional resources

    R. Mason

    Unconventional onshore US drilling is driving mergers, rig utilization, drilling techniques and innovative rig designs. New designs may bring the next step improvement in productivity gains as drillers embark on the largest retooling effort in 25 years. The onshore market is undergoing a rapid transition to unconventional oil and gas as a primary target. Advancements in drilling and completion technologies, including fracture stimulation and horizontal/ directional drilling, coupled with high commodity prices, are generating access to tight-formation resources that were considered uneconomic as recently as three years ago. US contractors are working in partnership with oil and gas operators to develop fit-for-purpose modern technology land rigs, financed through multi-year term contracts. A significant and increasing portion of this equipment will be used in exploiting hydrocarbon resources in tight sands, shales and coalbed methane deposits in the US onshore market.

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


Upcoming Events