Gran Tierra Energy Inc. ("Gran Tierra Energy") (NYSE Amex:
GTE; TSX: GTE), a company focused on oil and gas exploration and production in
South America, today announced preliminary results of the Moqueta-3 delineation well in
Colombia and an operations update for
Colombia,
Peru and
Argentina.
Colombia
Initial
drilling and logging results have been obtained from the Moqueta-3
delineation well, with a bottom-hole location 450 meters south of the
Moqueta-1 discovery well in the Chaza Block of the Putumayo Basin. Oil
and gas shows were recorded through the Villeta Lower U Sandstone, the
Villeta T Sandstone and the Caballos formations, with electric logs
indicating total net oil pay in the Moqueta-3 well increasing to 118
feet, from 44 feet encountered in the Moqueta-2 delineation well. As a
result of these initial indications of increased oil pay, a test program
is being designed to confirm the fluid content and productivity of the
encountered zones. This test program is expected to start immediately
and take approximately three weeks to complete.
Log
evaluation shows that the Villeta Lower U Sandstone reservoir has
approximately 14 feet of net pay, with no evidence of gas as found in
the Moqueta-1 well, suggesting the section may be oil bearing.
Oil and
gas shows encountered during drilling and log interpretations from data
acquired after drilling, indicate the presence of oil-bearing reservoir
sandstones in the underlying Villeta T Sandstone beginning at 4,545
feet measured depth ("MD") or 4,265 feet true vertical depth ("TVD")
with an approximate potential net oil pay thickness of 53 feet. Both
well logs and pressure gradient data obtained with a wireline testing
tool indicate the entire T Sandstone reservoir is oil bearing in
contrast to Moqueta-1 and Moqueta-2, where the zones were gas bearing.
The
underlying Caballos formation was encountered at 4,682 feet MD or 4,402
feet TVD with approximately 51 feet of potential net pay interpreted
from the well logs, consisting of approximately 31 feet of potential net
oil pay in the uppermost Caballos sandstone reservoir and 20 feet of
potential net oil pay in the Middle Caballos reservoir. In contrast,
these zones were interpreted as gas bearing in the Moqueta-1 and
Moqueta-2 wells. No oil-water contact was identified for the Upper and
Middle Caballos intervals. Subject to successful testing and subsequent
delineation drilling, there remains potential for additional oil
down-dip. The Lower Caballos reservoir has 29 feet of net reservoir with
lower oil saturations than found at Moqueta-1 and Moqueta-2. The fluid
type is not conclusive and this reservoir is not included in net pay;
however, it will be tested to confirm the fluid type.
The
Moqueta-4 delineation well will be located approximately 1.5 kilometers
southwest of Moqueta-1. The main objective is to delineate the Moqueta
discovery as no gas-water or oil-water contact is evident in the
existing wells. We intend to drill further down-dip with the Moqueta-4
well, and as demonstrated in Moqueta-2 and Moqueta-3, drilling down-dip
has the potential to extend the oil columns encountered.
Gran
Tierra Energy has completed 20% of a new 3D seismic acquisition program
on the western portion of the Moqueta area in the Chaza block. It is
anticipated that the seismic program will continue to provide additional
subsurface information to assist in Gran Tierra Energy's interpretation
of the Moqueta field and adjacent prospectivity.
Design
and land negotiations associated with the Moqueta to Costayaco pipeline
are currently underway. Upon completion of the land negotiations, the
application for an environmental permit will be submitted. Construction
of the eight kilometer pipeline is expected to be undertaken in fourth
quarter of 2010 with long-term flow testing expected to begin in the
first quarter of 2011.
At the Costayaco field, the construction of a water injection facility was completed in September 2010.
Gran Tierra Energy has commenced water injection through the
Costayaco-5 well into the T Sandstone reservoir. By increasing the
reservoir pressure, Gran Tierra Energy anticipates improving the
recovery factor of oil reserves in the Costayaco field.
Exploration Wells
In
addition to the drilling rig operating in the Moqueta field, Gran Tierra
Energy has contracted two additional drilling rigs in Colombia,
which are expected to drill the Pacayaco-1 and Taruka-1 prospects in
the Chaza and Piedemonte Sur blocks, respectively. Civil construction is
currently underway for the Pacayaco-1 and Taruka-1 well sites, while
surface access negotiations are ongoing for the Canangucho-1 well in the
Chaza block. Taruka-1 is expected to spud in December, 2010, while
Canangucho-1 is expected to spud the first quarter of 2011. Pacayaco-1
is on trend and west of the Moqueta discovery and is expected to spud
late October, 2010.
Argentina
In the
Valle Morado field, the workover and sidetrack operations on the
VM.x-1001 wellbore are proceeding. The condition of the existing
wellbore is worse than expected and sidetrack options are currently
being reviewed.
Peru
Gran Tierra Energy has concluded acquiring 260 kilometers of 2D seismic on Block 128 in Peru and will be moving to Block 122 to begin seismic acquisition operations. The drilling rig is currently being mobilized to Peru. The expected spud date for the first well in the Peru
program on Block 128, Kanatari-1, is December, 2010. Gran Tierra Energy
has now received all necessary seismic and drilling approvals for Block
122 and Block 128.
Brazil
An
application for approval of the acquisition of a 70% interest in Blocks
REC-T-129, -142, -155 and -224 in the on-shore Reconcavo Basin, Brazil has been submitted for regulatory approval from Brazil's Agencia Nacional de Petroleo Gas Natural e Biocombustiveis ("ANP").
Production Update
In the
third quarter 2010, Gran Tierra Energy preliminary estimates production
of 13,200 barrels of oil per day (BOPD) net after royalty. This falls
below the company's previously disclosed full year estimate of between
14,000 and 16,000 BOPD, net after royalty. Significantly impacting
production were OTA pipeline disruptions, leading to twenty-two days of
downtime in the third quarter. The OTA pipeline was back in service on September 20, 2010
with current production from all Gran Tierra Energy properties of
approximately 15,000 BOPD net after royalty, including approximately
14,200 BOPD from Colombia and 800 BOPD from Argentina.
About Gran Tierra Energy Inc.
Gran Tierra Energy Inc. is an international oil and gas exploration and production company, headquartered in Calgary, Canada, incorporated in the United States, trading on the NYSE Amex Exchange (GTE) and the Toronto Stock Exchange (GTE), and operating in South America. Gran Tierra Energy holds interests in producing and prospective properties in Argentina, Colombia, Peru and Brazil.
Gran Tierra Energy has a strategy that focuses on establishing a
portfolio of producing properties, plus production enhancement and
exploration opportunities to provide a base for future growth.
Gran
Tierra Energy's Securities and Exchange Commission filings are available
on a web site maintained by the Securities and Exchange Commission at http://www.sec.gov and on SEDAR at http://www.sedar.com.