Monday, June 18, 2012 by Bevis Yeo

Grand Gulf Energy increases stake in Arkansas oil prospect, drilling to start soon

Grand Gulf Energy (ASX: GGE) has increased its stake in the Leduc Reef prospect in Lafayette County, Arkansas, to 22% from 14%, giving it increased exposure to a 1.2 million barrel of oil target.

The wildcat exploration well targeting the prospect is expected to spud in late July or early August and will be drilled to a total depth of 8600 feet (2621.3 metres).

Production is expected to range from 100 to 300 barrels of oil per day and there is potential upside for up to 12 million barrels of recoverable oil to be found.

The Leduc Reef prospect is a new play type for the area and its success will open up further opportunities for Grand Gulf Energy, which has the right to participate pro-rata in any new prospects generated in an upcoming 3D seismic survey.

The secondary objective lower Smackover Formation has its porosity development proven in the nearby Midway Field where over 60 million barrels of oil have been produced.

Grand Gulf Energy is paying US$280,000, or 26.66% of the initial well costs, to earn its 22% working interest in the prospect.

In a success case the company will have to pay a further US$168,000 as its share of completion and facilities costs.

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Replies to This Discussion

Link to Grand Gulf website.

http://grandgulfenergy.com/

See the link at the bottom for a map.

Leduc Reef

  • Well is due to spud June 2012 with 21 days to drill.
  • Recoverable resource potential of 1-12 MMBO, IP’s estimated at 100-300 BBLS/D.
  • Defined by 3D Seismic, mounded feature and probably bio-carbonate.
  • Analogues for this prospect are the Appleton and Little Creek Fields (Alabama).
  • This is a new field wildcat, with success opening up further reef opportunities .
  • Secondary objectives in the lower Smackover.
  • US$167,000 dry hole costs.

http://grandgulfenergy.com/wp-content/uploads/2012/05/946.pdf

Any idea who the operator is, or is it GG?

Weiser-Brown is the operator.  Grand Gulf is merely taking a small Working Interest.  IMO, this isn't so much about Grand Gulf or the Brown Dense.  GG is a small energy company with a stock price less than a penny per share.  Their investment is $180,000 with the possibility of an additional $50,000.  GG does appear to be on the up-and-up and to have some technical expertise.  IMO, this is more about what may be behind the leasing in S Lafayette County and north Bossier Parish.  And the fact that as long as crude prices remain high there will be interest in oil and liquids whether it is from a conventional reservoir or an unconventional reservoir.  I take the Leduc Reef to be a conventional reservoir with limited aerial extent.

That was what I thought about GG.  I find it funny that the companies with the smallest interest always have the biggest press releases...

From the website description, it appears the prospect is near Midway Field in the northern part of Lafayette County. The indicated 8500 foot depth for TD would allow for assessment of the Reynold's Oolite section around 6300 feet, give or take, and enough depth to eval the brown dense. I wish W/B and GGE the best with this effort.

 

The top Smack around the stateline is near 10,900 feet to over 11,000 on the AR side.

Paul, when you give the top Smack depth above, that is for the top of the SMK A, correct?  Or is it the top of the L SMK?

It would be Smk "A". In South AR they call it the Reynolds Oolite. A rather consistent section that may reach 300 feet thickness or more in some areas. As you cross the border into N. LA, it is called Smk "A". Changes in depositional environment allowed for some separation of the potential reservoir limes by deeper water shales allowing for the "A", "B" etc. designations. Lower Smack along the border of south Lafayette Co. will start somewhere around 11,100' and deeper.

Paul do you have any idea what depth the brown dense would be just across the La.line?

The ETOCO Dominick 20 in the Missionary Lake North Field, S/N 238870, is a recent well that drilled to 11,100' within about two miles of the AR state line.  In it's Preliminary Completion Report filed with the LA Office of Conservation the Top of the Smackover is listed as 10,840'.  I have been told by two geologists that a well would need to penetrate to a depth of approximately 12,000' to fully test the Brown Dense in this vicinity.  As is mentioned by Paul, to reach the BD a drill bit would have to at least penetrate SMK reservoirs A, B & C to reach the top of the BD.  SWN has stated that the BD across their area of interest varies from 300' to 550' in thickness.  There is little well control for BD depths as there have been so few recorded penetrations.  Although arbitrary I think it is a reasonable premise to look at depths to the top of the Smackover (Reservoir A) and add 1000' to get an approximate depth for the base of the BD.

Skip, couldnt get link to map to load.   Does it show prospetive areas?

The link works fine for me.  It's a pdf file, the map is on the second page.  It's not very detailed.  It just shows a derrick located on the state line between Lafayette and Bossier.

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