What is fracking

2015-11-04 06:00

FRACKING is shorthand for hydraulic fracturing, a type of drilling that has been used commercially for 65 years. Hydraulic fracturing involves safely tapping shale and other tight-rock formations by drilling a mile or more below the surface before gradually turning horizontal and continuing several thousand feet more. Thus, a single surface site can accommodate a number of wells.

Once the well is drilled, cased and cemented, small perforations are made in the horizontal portion of the well pipe, through which a typical mixture of water (90 percent), sand (9.5 percent) and additives (0.5 percent) is pumped at high pressure to create micro-fractures in the rock that are held open by the grains of sand. Additives play a number of roles, including helping to reduce friction (thereby reducing the amount of pumping pressure from diesel-powered sources, which reduces air emissions) and prevent pipe corrosion, which in turn help protect the environment and boost well efficiency. The long-term effects of fracking are “unknown”, but it is likely that some wells will suffer “failures” causing air and water pollution, a new study has claimed.

Join the conversation!

24.com encourages commentary submitted via MyNews24. Contributions of 200 words or more will be considered for publication.

We reserve editorial discretion to decide what will be published.
Read our comments policy for guidelines on contributions.

Inside News24

Financial advisors – Do you need one and should you get one?

The good, the bad, and everything else you need to know when considering hiring a financial advisor.


Book flights

Compare, Book, Fly

Traffic Alerts
There are new stories on the homepage. Click here to see them.


Create Profile

Creating your profile will enable you to submit photos and stories to get published on News24.

Please provide a username for your profile page:

This username must be unique, cannot be edited and will be used in the URL to your profile page across the entire 24.com network.


Location Settings

News24 allows you to edit the display of certain components based on a location. If you wish to personalise the page based on your preferences, please select a location for each component and click "Submit" in order for the changes to take affect.

Facebook Sign-In

Hi News addict,

Join the News24 Community to be involved in breaking the news.

Log in with Facebook to comment and personalise news, weather and listings.