Press Esc to close



For full content view: Log in Now!

  • Optimizing surfactants to improve stimulation flowback in tight gas wells

    L. Kalfayan, B. Haley and S. Weiss

    The hottest onshore gas plays in North America are shales, from the Bakken, Horn River, Windsor, Antrim and Marcellus Shales in the north to the Barnett, Woodford, Haynesville and Fayetteville Shales further south. Operators are also investigating potential plays in many other regions globally. In virtually all cases, economic production requires hydraulic fracturing, which means pumping large volumes of fluid and proppant into the formation and then waiting for the well to unload for gas production. However, in low-permeability reservoirs generally and shale gas reservoirs in particular, poor or slow fluid recovery can result from the effects of formation capillary pressure, formation wetting characteristics and unfavorable gas-water surface tension conditions. To address these interacting properties, a flowback enhancement additive, typically containing a surfactant, may be included in the fracturing fluid system. Myriad options are commercially available. Choosing the right surfactant is critical to optimizing the flowback.

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