Like what you've read?

On Line Opinion is the only Australian site where you get all sides of the story. We don't
charge, but we need your support. Here�s how you can help.

  • Advertise

    We have a monthly audience of 70,000 and advertising packages from $200 a month.

  • Volunteer

    We always need commissioning editors and sub-editors.

  • Contribute

    Got something to say? Submit an essay.


 The National Forum   Donate   Your Account   On Line Opinion   Forum   Blogs   Polling   About   
On Line Opinion logo ON LINE OPINION - Australia's e-journal of social and political debate

Subscribe!
Subscribe





On Line Opinion is a not-for-profit publication and relies on the generosity of its sponsors, editors and contributors. If you would like to help, contact us.
___________

Syndicate
RSS/XML


RSS 2.0

Six tech advancements changing the fossil fuels game

By James Stafford - posted Tuesday, 23 July 2013


And then we have subsea power grid plans, which have been making progressive leaps since 2010 towards the advancement of electric grids installed on the floor of the sea to run processing systems at the site of underwater wells. It reduces the need for so many platforms on the water surface, and makes the entire process much less complicated. The ultimate goal here is to be able to operate offshore wells remotely from land—saving countless billions.

Multi-well-pad drilling: octopus in the house

One of the greatest drilling developments of the last decade is multiple well pads, which some like to refer to as “Octopus” technology.

Advertisement

Imagine gaining access to multiple buried wells at the same time, from a single pad site. This is what “Octopus” technology is doing, first in a canyon in northwestern Colorado in the Piceance Shale Formation and then in the Marcellus shale. It's definitely not your traditional horizontal drilling.

Traditionally, to drill a single well, a company needs a pad or land site for each well drilled. Each of these pads covers an average of 7 acres. The Octopus allows for multiple well drilling from a single pad, which can handle between 4 and 18 wells. So, a single pad on 7 acres can now be used to drill on up to 2,000 acres of reserves. More than anything, it means that drilling will be faster, faster, faster … And less expensive in the long run once it renders it unnecessary to break down rigs and put them together again at the next drilling location. It's simple math: 4 pads usually equals 4 wells; now 1 pad can equal between 4 and 18 wells.

Here's how the technology works: A well pad is set up and the first well is drilled, then the rig literally “crawls” on its hydraulic tentacles to another drill location from the same pad, repeatedly. And it's multi-directional. It takes about two hours between each well drilling. With traditional horizontal drilling methods, it takes about five days to move from pad to pad and start drilling a new well.

Last year, Devon Energy (DVN) drilled 36 wells from a single pad site using Octopus technology in the Marcellus Shale. More recently, Encana (ECA) drilled 51 wells covering 640 underground acres from a single pad site with a surface area of only 4.6 acres in Colorado. Multi-well pad drilling is also revolutionizing drilling in Bakken, and this is definitely the long-term outlook for shale. It will become the norm.

It's also good (or at least slightly better) news for the environment because it means less drilling disturbance on the surface as we render more of the process underground.

Supercomputing and seismic dimensions Einstin would appreciate

Advertisement

Oil majors are second only to the US Defense Department in terms of the use of supercomputing systems. That's because supercomputing is the key to determining where to explore next—and to finding the sweet spots based on analog geology.

What these supercomputing systems do is analyze vast amounts of seismic imaging data collected by geologists using sound waves. What's changed most recently is the dimension: When the oil and gas industry first caught on to seismic data collection for exploration efforts, the capabilities were limited to 2-dimensional imaging. Now we have 3-dimensional imaging that tells a much more accurate story.

But it doesn't stop here. There is 4-dimensional imaging as well. What is the 4th dimension, you ask: Time (and Einstein's theory of relativity). This 4th dimension unlocks a variable that allows oil and gas companies not only to determine the geological characteristics of a potential play, but also gives us a look at the how a reservoir is changing LIVE, in real time. The sound waves rumbling through a reservoir predict how its geology is changing over time.

  1. Pages:
  2. 1
  3. Page 2
  4. 3
  5. 4
  6. All


Discuss in our Forums

See what other readers are saying about this article!

Click here to read & post comments.

4 posts so far.

Share this:
reddit this reddit thisbookmark with del.icio.us Del.icio.usdigg thisseed newsvineSeed NewsvineStumbleUpon StumbleUponsubmit to propellerkwoff it

About the Author

James Stafford is the publisher of OilPrice.com.

Other articles by this Author

All articles by James Stafford

Creative Commons LicenseThis work is licensed under a Creative Commons License.

Article Tools
Comment 4 comments
Print Printable version
Subscribe Subscribe
Email Email a friend
Advertisement

About Us Search Discuss Feedback Legals Privacy