Proactive Investors' second hydrocarbon event of 2013 promises to be just as exciting as the first as we welcome four companies working new oil frontiers.

Joining us at the Crystal Room of the May Fair Hotel in London next Wednesday (Sep 18) will be Providence Resources (LON:PVR), Mart Resources (CVE: MMT), Canadian Overseas Petroleum (CVE:XOP) and Falcon Oil & Gas(LON,ESM,CVE:FOG).

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Providence Resources remains one of AIM market’s most promising oil and gas stocks.

The share price doesn’t yet fully credit the firm’s Barryroe oil discovery, off Ireland’s south coast, yet it still has many more potentially high-impact exploration projects to come.

Ongoing farm-out talks for the Barryroe oil discovery are expected to create share price catalysts in the near term.

Other key highlights for investors to look out for include the start of the Cairn operated Spanish Point well, scheduled for the second quarter of 2014, and later the Rathlin Basin (Polaris) and the Kish Bank Basin exploration projects.

Having been one of the top performing stocks in recent years the share price has this year given back some of the gains to now trade at just 370p per share. But City brokers reckon Barryroe alone is worth 2,000p per share to Providence.

Chief executive Tony O’Reilly will tell investors more about what will no doubt be a busy and exciting period.

Canadian Overseas Petroleum, otherwise known as COPL, is a Toronto-listed oil and gas explorer, which is targeting a listing on London’s AIM this year.

It has two assets: a reassuringly solid shale oil play in New Zealand, and a highly prospective deep-water project off the coast of Liberia, in West Africa.

The New Zealand asset puts a floor on the company valuation while the Liberian licence provides upside, and lots of it.

Industry giant Exxon Mobil has bought into the company’s Liberian assets, buying a large chunk of block LB-13. This has seen COPL’s interest diluted down to 17% and they remain fully carried until Exxon spends US$120mln. Interestingly, the Canadian company has equal say on whereabouts on the block the drilling should take place, recognising the expertise of COPL’s team, whose forte is the mapping of offshore seismic data.

Making its debut in front of our group of investors will be Niger Delta focused Mart Resources.

The prolific basin is increasingly being shaped by juniors following Shell’s much-publicised retreat.

And Toronto listed Mart is particularly well placed, with more than 10,000 barrels of daily oil production already established.

From such a position of strength Mart is already rewarding investors with handsome dividends - C$17.8mln or C$0.05 per share, per quarter.

Don’t let this sweetener confuse you, however, as Mart is still very much a growth play. Indeed, the aim of the UMU-11 well on the Umusadege, which spudded in August, is to better appraise parts of the field – which could open up more reserves and production if successful.

Here to bring us bang up to date will be chief executive Wade Cherwayko.

It's already been a very busy first half for Dublin and London-listed Falcon Oil & Gas and things are only just warming up for this exciting junior, brimming with potential.

The period saw it raise over US$25million, achieve debt-free status, and significantly reduce its operating loss.

It is now focused on securing a farm-out deal for its massive acreage at the Betaloo basin in Australia, which is shaping up to be a world-class conventional and unconventional oil and gas play and says discussions are "well advanced".

City Broker Cantor Fitzgerald has noted that Betaloo is one of the largest basins in Australia with consultant Ryder Scott estimating recoverable resources of 18bbbls and 64 tcf gas.

It reckons the group will have its “pick” of partners, with BG (LON:BG.), Statoil (ETR:DNQA), Total (EPA:FP) and ConocoPhilips (NYSE:COP) among the raft of new entrants into the Australian shale gas arena.

Meanwhile, in Hungary, preparations for testing the recently drilled Kutvolgy-1 well are now underway, while in South Africa, where it is partnered with US energy giant Chevron, it soon expects the award of an unconventional exploration licence for Karoo Basin.

Joining us will be chief executive Philip O'Quigley.

Please join us at 5:45pm to allow for a prompt 6pm start. Each company has around 30 minutes to give a short presentation and for Q&A.

This will be followed by the 'Champagne Raffle' where six lucky guests will win a bottle each.

The evening will end with a complimentary bar and an assortment of the finest hot & cold canapes, giving you the opportunity to speak with the directors and other investors.