o_19od9jqc01lfe1uu144d110uptia.pdf

ate of 600 BOPD. The 12500 Lwr sand section is faulted out of the Dynamic Duhon No. 1
well. Only five wells have been drilled deep enough to evaluate the 12500 Lwr sand but most
of those wells were drilled low on structure. The Texaco Steen No. 1 and Texaco Derouen No.
1 wells were both drilled off of the structure to the South and Southeast of the structural crest
and both wells logged well developed wet sand section in the 12500 Lwr sands. The Florida
Gas B. Faulk No. 1 well and Northcott Steen No. 1 wells were also drilled low on structure to
the Southwest of the structural crest but penetrated the 12500 Lwr sand shaled out.
The mapping interpretation suggests that there may be 60 acres of attic structure up dip of the
Dynamic Juanette (Mouton) No. 1 well. Using an average net Oil pay of 10’ X 60 acres X 500
BO/Ac/Ft = 300 MB Oil of potential reserves.
12150 Sand:
Five (5) wells have penetrated and logged oil accumulation in the 12150 sand within the
prospective fault block. Two (2) separate sand members have been identified in the 12150
sand; a 12150 Upr. Sand and a 12150 sand. The sands were evaluated as separate reservoirs
due to different Original OWC’s observed in the initial wells that were drilled. The 12150 Upr.
Sand had an Original OWC of -12162’ observed in the Dynamic Mouton No. 1 well drilled in
1979 and the 12150 sand had an original OWC of -12138’ SS in the Dynamic Duhon No. 1 and
No. 2 wells drilled that were also drilled in 1979. The Dynamic Duhon No. 2 well produced
331 MB oil, 698 MMCF gas, and 759 MB salt water from 06-82 to 08-91.
The completion had sand problems but was washed out in 1994 and subsequently produced an
additional 5 MB oil from 03-94 to 04-95 when the well sanded up again at a rate of 50 BOPD.
The Dynamic No. 1 well was completed in both members of the 12150 sand and produced
approximately 46 MBO, 11 MMCF gas, and 987 MB salt water from the 12150 Upr. and
12150 sands. Shelf Energy acquired the Duhon No. 2 well in 2008, re-entered the well, and
made a successful recompletion in the 12150 sand. The well has produced a total of 20 MBO
and is currently producing at a marginal economical rate of 5 to 6 BOPD with a high water cut.
The mechanical condition of the No. 2 well has deteriorated through the years (it was initially
drilled and completed 35 years ago). There are holes in the casing and so Shelf is
recommending a sidetrack of the well. The proposed sidetrack is not anticipated to get high to
existing well bores. Rozel drilled a well in August of 2007 that logged 5’ of net oil in the
12150 sand with a current OWC identified at -11903’SS. The 12150 Upr sand logged tight
with no pay. The Rozel well was not completed and was subsequently plugged and abandoned.
The sidetrack will target the 12150 Upr and 12150 sands west of the Rozel and Duhon No. 1
wells but in a similar structural position so there is a chance that the 12150 Upr and 12150
sands could both be penetrated with some oil accumulation.
No reserves have been assigned to the 12150 sand.
11900 Sand:
Six (6) wells have penetrated and logged oil and gas accumulation in the 11900 sand. The
11900 sand also appears to have at least two (2) separate members. The 11900 Upr is gas
bearing and the 11900 Lwr had a gas cap with an oil rim. The Duhon No. 2 well has been the
only producer in the 11900 sand having produced 953 MMCF gas, 16 MB condensate, and 162
MB salt water. Rozel drilled a well in 08-07 that logged 6’ of net gas in the 11900 Upr. and 4’
of net oil in the 11900 sand with an OWC @ -11903’ SS. A completion attempt was not made
in the Rozel well and the well was subsequently plugged and abandoned. The proposed
sidetrack in not expected to get high to existing wells but there may be some remaining oil
reserves in the 11900 sand and some gas reserves in the 11900 Upr. sand based on the recent
results of the Rozel well.