Press Esc to close



For full content view: Log in Now!

  • Simple managed pressure drilling method brings benefits

    H. Santos and J. Kinder

    Managed Pressure Drilling (MPD) involves a collection of tools, processes and equipment to manage the annular pressure profile in an oil or gas drilling operation. Key to this is a more precise determination of the wellbore pressure limits (pore and fracture) and keeping the pressure within the safety limits. It is not surprising, then, that the oil industry is seeing this new drilling method as the best alternative for successfully drilling wells in difficult environments, where conventional drilling has failed. MPD can be used in a variety of ways, from simply managing the friction in the annulus or modifying fluid properties and flow rates, to more complex issues like: • Using equipment to keep circulating, while making connection • Using pumps inside the wellbore to reduce the fluid pressure • Keeping the well closed with the return going through a choke to apply backpressure at the surface.

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