Actually there was a bit more info in that November 4 2014 company PR:
Coiron Amargo (35% WI) Block - Sierras Blancas Horizontal Exploitation & Vaca Muerta Shale Delineation Madalena’s third Sierras Blancas horizontal (CAN-18(h)) was recently drilled and completed in Argentina and was placed on production on October 18, 2014.
The CAN-18(h) well was drilled horizontally in the Sierras Blancas light oil reservoir to a total measured depth of 3,642 metres with a horizontal lateral section of approximately 450 metres in length. This horizontal well was subsequently cased and completed with a 3.5” slotted liner and for operational efficiencies was immediately placed on production through permanent facilities.
The CAN-18(h) well is flowing without artificial lift equipment and has been on production for approximately 12 days at choke settings ranging from 6 mm to 8mm in size with the following production rates observed to date:
• The highest production rate was on a 8 mm choke setting, when the CAN-18(h) well produced at approximately 755 bbls/d of oil with 930 mcf/d of associated natural gas for a total of 910 Boe/d (83% oil) at an average flowing pressure of approximately 990 psi over the initial 24 hour period.
• On a 6mm choke setting, the CAN-18(h) well has produced at an average rate of 342 bbls/d of oil with 566 mcf/d of associated natural gas for a total of 436 Boe/d (78% oil) over a 7 day period and at an average flowing pressure of approximately 901 psi. Water cuts have ranged from 5 to 17%.
The CAN18(h) well is the third horizontal well drilled into a third separate pool of the six Sierras Blancas conventional light oil pools discovered to date on the Coiron Amargo block. The Company has an inventory of horizontal development locations on the Coiron Amargo block and a fourth horizontal well targeting the Sierras Blancas light oil reservoir (CAN-16(h)) is now expected to spud in late November 2014 once the drilling operations are completed at CAS.x-16 (see below) and the drilling rig is moved to the CAN-16(h) location.
With the Coiron Amargo block located within the oil window of the Vaca Muerta shale, the Company is currently drilling a Vaca Muerta shale delineation well at the CAS.x-16 location in the southern portion of the Coiron Amargo block. Completion and testing operations on this well and a previously drilled Vaca Muerta shale well at the CAS.x- 15 location are both expected to be carried out as part of a multi-well completion program in late 2014 and early 2015. The CAS.x-15 well was previously drilled and cased after encountering approximately 114 metres of Vaca Muerta shale.