A Look Back


Intragaz benefits from a rich past that allowed it to acquire knowledge and develop expertise.


  • In the late 19th century, Pointe-du-Lac farmers heated their homes and barns using natural gas. The gas probably came from near-surface aquifers (less than 25 m deep).
  • The first well to reveal a gas field in Pointe-du-Lac was drilled by Joseph Auger in 1955.
  • Like Joseph Auger, the Pères de la Fraternité sacerdotale decided in 1960 to drill for gas to heat their facilities as inexpensively as possible..
  • In 1961 Corporation des Pétroles et Gaz de lac Saint-Pierre, whose principal shareholder was Laduboro, began systematic drilling with a view to operating the deposit. Exploration was carried out both in Lac Saint-Pierre and along the shoreline
  • Starting in 1965 the deposit was put into commercial operation, and gas was sold to businesses in the Trois-Rivières area. Operations continued until 1976 when withdrawal had to be discontinued due major water production.
  • In the mid-1980s, Société québécoise d’initiative pétrolière (SOQUIP) became interested in the site and had work carried out with a view to reusing it for underground storage.
  • From 1985 to 1987,  a testing and drilling program was conducted by SOQUIP and Gaz Metropolitain in collaboration with SOFREGAZ  (a company specialized in all areas of natural gas engineering) to implement and determine the feasibility of converting the depleted reservoir into an underground storage facility.
  • The first injection was in July 1990 and the first withdrawal in January 1991.
  • In March 1991, consortium members established Intragaz Limited Partnership to oversee operations at the Pointe-du-Lac site. Gaz de France (now Engie), one of the world’s first gas companies and a recognized underground storage expert, joined the partnership.
  • In about five years, Intragaz optimized peak withdrawal capacity from   910 103m3/day to 1,200 103m3/day. The working gaz capacity was progressively rised to reach 22,7 106m3.
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  • Under its newly expanded mandate, Intragaz developed the Saint-Flavien storage site.
  • This site was first drilled in 1972 by Shell. SOQUIP (Société québécoise d’initiative pétrolière) subsequently returned to the wells and, after completing stimulation work, demonstrated the potential for commercial production.
  • Many development wells were drilled and operations began at the field in 1980. The natural gas was initially transported by truck and trailer.
  • SOQUIP stopped selling gas in 1994 after having produced 160 million cubic meters.
  • After drilling six additional wells and carrying out 3D seismic surveys between 1992 and 1995, Intragaz converted the field into an underground storage reservoir in  1997. 
  • The site was connected to the TQM Pipeline transportation system in Saint-Nicolas by a 23 km pipeline in April 1998..
  • Between 2000 and 2004 Intragaz drilled six horizontal wells, increasing the working gas capacity to 120 million cubic meters. The Saint-Flavien site is used for seasonal storage.
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Exploration Licenses

As part of its storage operations, Intragaz acquired exploration licenses. Farm-out agreements were signed with Talisman Energy (now Repsol) in 2006 on the Villeroy license and with Gastem in 2007 on the Joly license. Both companies have subsequently carried out drilling activities to evaluate the commercial potential of these sites.

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