The German bank says its new fossil fuels policy will also prohibit investing in projects that use hydraulic fracturing or fracking in countries with scarce water supplies and all new oil and gas projects in the Arctic region.

Calfrac Well Services Ltd. says it is seeking advice on changes to its capital structure but doesn't know of any "material change'' that would account for a 75.6 per cent increase in its share price on Tuesday.

A long-running court battle over who owns a well-completion technology that helped usher in the shale oil and gas boom in North America has ended.

Corridor Resources was searching for investors to back its multimillion-dollar plan but says "regulatory uncertainty" has now limited its search.

Two of Canada's biggest oil and gas well-fracking companies are posting double-digit percentage revenue declines as energy exploration spending slowed in the quarter ended June 30.

The Alberta Energy Regulator is moving to restrict oilfield fracking activity near the Brazeau Reservoir in east central Alberta as a precaution following a 4.3 magnitude earthquake south of the area in March.

The Alberta Energy Regulator received a report from Vesta on March 4 at 6:20 a.m. that seismic activity with a magnitude of 4.32 was detected due to fracturing at the site.

Quakes measuring between 3.4 and 4.5 magnitude took place near hydraulic fracturing operations on Nov. 29.

"They have confirmed that there were active injection activities at the reported epicenter," said a government scientist.

The government of Brian Gallant instituted a moratorium on hydraulic fracturing in 2014.