3
September
2011

IDDP-1 flow test – continues

Flow tests of well IDDP-1 have continued this summer. After the flow tests in the summer of 2010 stopped, improvements were made to the wellhead and flowline to meet the demanding conditions. Below are a few video clips of the 4th flow test, August 9-10, 2011.

  1. Video clip: The test began by opening a 4” valve into a separate flow line. This lasted for about 10 minutes.
  2. Video clip: This video clip shows the flow condition ca. 3 minutes after the 12” operating valve had been fully opened into the 500 mm flow line and the rock muffler. The steam turned black after ca. 1 min. flow due to Fe-O-S-compounds from corroded liner.
  3. Video clip: After ca. 10 min. flow on the main flow line the steam turned white again and became superheated ca. 25-30 min from the beginning of flow test 4.
  4. Video clip: This video clip shows the transparent superheated steam flow ca. 12 h after opening. T: 410°C, P: 40 bar, H: 3150 KJ/Kg, Power output potentially 30-40 MWe. The well was closed 11. August for modification on the flow line. Wet scrubbing pilot test will begin about mid-September 2011.


Flow tests of well IDDP-1 have continued this summer. After the flow tests in the summer of 2010 stopped, improvements were made to the wellhead and flowline to meet the demanding conditions. This included adding another Class 2500 master valve, scaling the main flowline up to DN500 PN25 (500 mm wide with pressure rating of 25 bar) to lower flow velocity and addition of a 4” 2500 class flowline as an alternative.
The flow test resumed on May 17th 2011, but due to resonance in the flow line and some resulting damages the well had to be shut in again for further modification. The 4th flow test then began on the 9th of August and lasted until the 11th of August 2011 when a 12” Class 1500 operating valve failed. Then, a decision was made to shut in the well again and modify the flow line a bit further to accommodate a double 4” valves to undertake a wet scrubbing pilot test, which will resume mid-September. Preliminary data implies the well is capable of producing between 40-50 kg/s of highly superheated steam, equivalent of some 30-40 MWe.
We like to draw your attention to this website – showing a number of presentations on Deep Roots of Geothermal Systems, including an overview on the IDDP program http://georg.hi.is/files/IDDP%20-%20GOF.pdf .