Amerisur Resources is exploring for oil and gas in South America, currently in Colombia and later it plans to exploit its licences in Paraguay. It has a new Board of Directors and following a recent Placing at 6p (250m shares) sufficient cash to see through its current drilling plans and carry out some further corporate asset improvement opportunities.

Valuation of Amerisur Resources : 'Rule of Thumb' based on c.800m shares and using 10% DCF on oil at $70/barrel is 0.75p on the sp for every 1m barrels (CHP's share) that is proved in the ground.

Amerisur (formerly Chaco Resources) now has two exploration blocks in Colombia which it is currently evaluating and preparing to drill, one of these in the last quarter of 2007. It has also applied for further blocks in Colombia which are also believed to offer near term production. It also has three substantial areas in Paraguay and is awaiting news on a fourth. The next six months (May-November 2008) should see a steady news flow as it establishes the companys transformation from being an exploration company to becoming a significant oil production company. Set out below are some of the milestones which should produce announcements and have a positive effect on the share price. Any potential reserves are quoted in recoverable oil assets.



Platinillo, Colombia :

100% interest in a field currently assessed at holding 38.1m barrels of light sweet crude oil. Previously this a well flowed at 533 b/d before it was capped.Modern extraction methods may achieve up to double this output/well. Drilling completed for assessment and details of reserve figures and resumption of production daily figures awaited at Dec.2009. (Some guessestimates suggest the field might contain as much as 70m-100m barrels.)

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Tigra/Fenix block

100%% Further 3D seismic is completed; previous drilling has resulted in 30,000 barrels of oil from this block. Other blocks nearby in the Magdalena basin have also produced well. Drilled 11/2009; optimistic RNS (17 leads to follow)but reserve figures awaited

RNS :Expect further news on this block imminently and maybe a JV or other arrangement to speed up the timescale to production



Additional blocks to be announced

New local management team, in particular the CEO, is reputed to have some excellent contacts which will bring some high quality blocks to Amerisur in the coming months.

Curupayty Block, Paraguay :

1.39m hectares in north, close to Bolivia. Two wells previously drilled and both showed oil.

RNS : Expect JV with larger producer.



San Pedro Block, Paraguay :

1m hectares in south-east. Previous drilling showed oil.

RNS : Expect JV with larger producer.



Parana Basin, Paraguay :

Canindeyu block covering 1,789,000 hectares. Bordering Brazil. Oil field on Brazilian side already drilled. Chaco also expect to find oil and, at a deeper level, considerable quantities of gas. Chaco has obtained valuable historic seismic for re-evaluation.

RNS : Presidential Decree received 2/11/06.. Petrobras has announced its intention to increase substantially its effort to exploit Paraguay's hydrocarbons and has announced a farm-in on CDS's adjacent block. Possibility that they or another major will do likewise with Amerisur



Corporate Activity : The new Chairman is believed to have been brought on board to prove some or all of the existing Colombian assets and get these oil producing, arrange a JV on the Paraguayan assets before negotiating a sale of the company as consolidation of explorers in the region continues. An exit sp north of 1.00 over the next 12 months might be a reasonable target provided the drilling programme lives up to expectations, the price of oil remains at/above current levels and an approach is made for the company.

Thank you

Amerisur Resources
Platanillo-4 Update
RNS Number : 5152I
Amerisur Resources PLC
26 July 2012


26 July 2012

Amerisur Resources Plc ("Amerisur" or the "Company")

Platanillo-4 Update


Amerisur Resources Plc, the oil and gas producer and explorer focused on South America, is pleased to announce an update on the well Platanillo-4 in the Platanillo Field, Colombia, the second of a planned eight well drilling campaign.

The well has successfully reached total depth at 8,675ft measured depth, at a distance of 1,740ft from the bottom hole location of well Platanillo-3 and has been logged. The well is currently being cased and cemented in preparation for Drill Stem Testing.

The reservoir formations were encountered in line with the 3D seismic model, with the U sand package being slightly higher than prognosis. Initial analysis of the U sand interval indicates a 75ft gross oil column and 51ft net potential pay.

Additionally, logs indicate the presence of a high quality development of the N sand at this position, in line with the attribute model developed to determine the N sand distribution through the field. The reservoir sections encountered in the well are currently being studied to determine which zones will be tested, with log indications of significant oil saturations in at least 3 separate formations.

The Company expects to perform flow and pressure tests during the next two weeks, and will announce results once they have been analysed.

Following testing, completion and placing on production of Platanillo-4 the Serinco Rig D-10 will be skidded to the third drilling cellar, to drill the third well (Platanillo-5) of our current programme from the same location (Platform 9), deviating the well to an offset of approximately 1,400ft north from the bottom hole location of Platanillo-3. As previously reported, given the positive results of the wells, the Company intends to drill a total of 4 wells from Platform 9 instead of the 3 wells planned previously. The additional well, denominated Platanillo-9 (due to the order in which wells were permitted with the Ministry of Mines and Energy) will be directionally drilled to a location approximately 1,600ft west of Platanillo-3.

Amerisur Resources
Fenix Update
RNS Number : 5332I
Amerisur Resources PLC
26 July 2012


26 July 2012

Amerisur Resources Plc ("Amerisur" or the "Company")

Fenix Update


Amerisur Resources Plc, the oil and gas producer and explorer focused on South America, is pleased to announce an update on the Fenix contract.

The Company has entered into a Memorandum of Understanding (MOU) with PetroGranada, a private oil and gas exploration and production company focused on Colombia and Latin America. PetroGranada's British Management team has over 20 years of E&P experience in Colombia and is backed by the private equity arm of a major banking group. The MOU allows an exclusive period of two months for PetroGranada to complete technical and other Due Diligence into the Fenix contract prior to entering into definitive agreements covering an earned interest in the Fenix contract.

The Definitive Agreements, if entered into post the Due Diligence period, will require PetroGranada to fund certain operations in the Fenix block, including 2D seismic acquisition and the drilling of various types of high technology wells to confirm and exploit the block potential.

Here we go - through the 40p barrier

It all seems a continuation of good news. Not sure why others need to be brought in on Fenix unless they really are going to be worked over when it comes to agreeing the terms of any farm out. On Platinillo we need to be told what the latest projected resource size is. It looks like it could be way in excess of previous estimates.

40p breached. Leaves this open for a step revision when RBC buyers move in.

What a great day all around - just got back from swimming in the sea with my grandchildren to find I could have afforded to buy the ice creams (and very nearly the van!)

Sharesure,

Maybe the time is right for an updated header?

45p max in short term..and then retreat! I can't see more than 43p now but it is poss for a few mins. Buy at 40p, if you can, and then wait for week on week announcements until Oct/Nov; I expect regular, good, news updates that will drive it. But trade at your peril. Ideal 'Buy' date 3rd August imo, early on.
Remember 'nothing goes in a straight line'..

43p, maybe, tomorrow? But only for a short while!

45p is the new threshold once the tell us what they have in P3.

Certainly no straight lines - looks like the MMs have plenty to sell this morning.

Yesterday's gains wiped out by the new shares.
2517

That's brought a few sellers out, I'm staying put having bought at an average of 15p I'll wait for the oil to flow in larger quantities, which shouldn't be too long.
2517

Agreed 2517, let the boys and girls play I'm in for the long game. The best is still to come.

blackdown, I agree but sifting through the bits of information will need to wait a while as I haven't the time right now and maybe that will be for the best since we also really need some decent information from the company.
With regard to the RNS today I don't read anything into what the directors are doing with their options since tax has a big impact on what they do and when. It could be far better exercising these now and sorting that out if they think a big rise is imminent. Also those shares they may have sold have gone to someone. Knowing where they have gone could be interesting.

SS, You did say some time back that if the big investors wanted 'in' at a particular price then the market would arrange for that price one way or t'other.
They did and they have. I did not forget what you said and planned accordingly.
Got a few away yesterday but also got a few in today. Not at bottom but good enough.
Lots to come..let the children play. Well they are grown up children but they are still good at 'games'.
I still have a good few I bought at 38.5p..silly me.
Never goes in a straight line. 'Straight' is not a concept the City is familiar with.
Still I'm comfortable and happy; and looking forward to log test results.

tx ss

Flow and pressure testing should complete this week.
2517

From a reliable source?

I hope so SS, the company rns on 26th July.
2517

Thanks. I hope that they will meet their timetable then. They are getting better at that than they were.

Tomorrow could be interesting