Press Esc to close



For full content view: Log in Now!

  • Petroleum Technology Digest: Low-cost, brine-activated polymer gel improves waterflood sweep

    J. Hessert

    At little extra burden to its field staff, a Texas independent implemented a polymer gel process to improve a small waterflood’s sweep. Oil output quickly doubled before stabilizing at a slow decline. Conservatively, the revenue-to-cost ratio is 5.0. A four-well waterflood in Cook County, Texas, produces from a 1,100-ft Strawn Sand zone. This Strawn Sand is a channel sand. The injection well and producer #1 are in the main channel (Fig. 1), with more than 20 ft of sand. Producers # 2 and #3 are on the edge of the channel, with only a few feet of sand. They did not contribute much production or total fluid, either before or during this project. In 2004, before the project began, oil production and oil cut were gradually falling, averaging 210-220 bbls of oil per month (bopm) and about 6% oil cut when the project was started in January 2005.

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