Exhibit 99.1




Gasco
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Energy

For Release at 10:00 AM EST on Monday, December 6, 2004
                GASCO ENERGY PROVIDES OIL & GAS OPERATIONS UPDATE

DENVER - (PR Newswire) - December 6, 2004 - Gasco Energy, Inc. (AMEX: GSX) today
provided  an  interim  oil and gas  activities  and  operational  update  on its
Riverbend Project in Utah's Uinta Basin.

Drilling Activity
Gasco is currently  drilling its tenth and eleventh wells of the fiscal year. At
the  beginning of December,  the Company was at total depth and preparing to log
the  Federal  22-30-10-18.  This  well  will test the  Mesaverde  and  Blackhawk
formations.  In addition,  Gasco  continues  drilling  operations on the Federal
43-30-9-19, a Wasatch, Mesaverde and Blackhawk test in the Riverbend area.

The  43-30  is the  first  well in the  second  bundle  under  the  Joint  Value
Enhancement  Agreement  (JVEA).  The JVEA is an agreement  among a subsidiary of
Gasco  and  a  group  of  industry  service   providers  that  contemplates  the
development  of up to 50 wells in Gasco's  Riverbend  Project  located in Utah's
Uinta Basin.  The wells are  expected to be  developed in 10-well  bundles to be
approved by the parties on an ongoing basis.  Pursuant to the terms of the JVEA,
Gasco is expected to fund 30% of the development  costs of each well drilled,  a
third  party  capital  provider  is  expected  to fund 25% of such costs and the
service providers are expected to provide the remainder of required costs in the
form of drilling and  completion  services,  up to a maximum of $13.5 million in
services  for a given  bundle.  Gasco's  interest  in the  production  from each
10-well bundle of wells, net of royalties,  taxes and lease operating  expenses,
is estimated to equal the proportion of the total well costs that it funds

The Company  recently  entered into a contract  for a third Nabors  drilling rig
which is  expected  to spud the Federal  31-21-9-19  (Gasco 75% minimum  working
interest) during December 2004. The rig will be moving from Wyoming where it was
recently  drilling on the Pinedale  Anticline.  The Federal  31-21 is located in
Gasco's  Riverbend  Area and will test the Wasatch,  Mesaverde and the Blackhawk
formations.

Completion Activity
At the end of November  one well was  undergoing  completion  operations  and is
currently flowing back frac fluid.

Riverbend Gas Gathering System
During the month of November Gasco completed the  installation of compression on
the  Riverbend  Area system.  This brings the total  horsepower  to 1180 and the
capacity to 11 million  cubic feet per day  (MMcfd).  Gasco also  installed  300
horsepower  of  compression  in the Wilkin  Ridge area,  allowing for 3 MMcfd of
capacity.

Production
Cumulative  monthly  production  for November  2004 was 166.8 million cubic feet
equivalent  (MMcfe)  gross,  or 41.5 MMcfe net.  This is a 26.1%  increase  from
October  cumulative  gross  production of 132.3 MMcfe and a 17.9%  increase from
October net  production of 35.2 MMcfe.  Production  increases are  attributed to
adding new wells, well workovers,  and the completion of the Riverbend gathering
system expansion.


Management Comment
Commenting  on the Riverbend  Project,  Gasco CEO and  President,  Mark Erickson
said:  "We  are  pleased  to  report  incremental   month-over-month  production
increases.  Our  commitment  to the  Uinta  Basin is  evidenced  by our focus on
driving down costs while  improving  efficiencies  and economies of scale.  This
month's anticipated  addition of a third rig should provide further improvements
in production  rates and in drilling time and cost  reductions as we continue to



get better at exploiting  our Uinta Basin  leasehold.  The  additional  rig will
drill for a higher  working  interest  net to Gasco as compared to the other two
rigs currently working for Gasco"

Institutional Investor Conference
Gasco Energy  President  and CEO, Mark Erickson will present at the First Albany
Capital  Growth  Conference in New York on Wednesday,  December 8, 2004.  Slides
from Mr. Erickson's presentation will be available at  www.gascoenergy.com.  You
may   also   access   the   slides   by   visiting   the   conference   site  at
http://w.on24.com/r.htm?e=9725&s=1&k=9832287946ACC550F70AD3FA5E77BA6


About Gasco Energy
Gasco  Energy,  Inc.  is a  Denver-based  natural gas and oil  exploitation  and
development  company  that  focuses on  natural-gas-rich  prospects in the Rocky
Mountain area of the United States. The Company currently is active in the Uinta
Basin in Utah and controls  acreage in the Greater Green River Basin of Wyoming.
To learn more, visit www.gascoenergy.com.

Forward-looking statements
Certain statements set forth in this press release relate to management's future
plans,  objectives and expectations.  Such statements are forward-looking within
the  meanings  of Section 27A of the  Securities  Act of 1933,  as amended,  and
Section 21E of the Securities  Exchange Act of 1934, as amended.  All statements
other than  statements  of  historical  facts  included  in this press  release,
including,  without  limitation,   statements  regarding  the  Company's  future
financial position,  potential resources,  business strategy, budgets, projected
costs and  plans  and  objectives  of  management  for  future  operations,  are
forward-looking  statements. In addition,  forward-looking  statements generally
can be  identified  by the use of  forward-looking  terminology  such as  "may,"
"will," "expect," "intend," "project," "estimate,"  "anticipate,"  "believe," or
"continue"  or  the  negative  thereof  or  similar  terminology.  Although  any
forward-looking  statements contained in this press release are to the knowledge
or in the judgment of the officers and directors of the Company,  believed to be
reasonable, there can be no assurances that any of these expectations will prove
correct  or  that  any  of  the  actions   that  are  planned   will  be  taken.
Forward-looking  statements  involve known and unknown  risks and  uncertainties
that may cause the Company's actual  performance and financial results in future
periods to differ materially from any projection, estimate or forecasted result.
Some of the key  factors  that may cause  actual  results to vary from those the
Company expects include inherent  uncertainties in interpreting  engineering and
reserve or  production  data;  operating  hazards;  delays or  cancellations  of
drilling  operations  because of weather and other natural and economic  forces;
fluctuations  in oil and  natural  gas prices in  response to changes in supply;
competition from other companies with greater resources; environmental and other
government  regulations;  defects  in  title  to  properties;  increases  in the
Company's cost of borrowing or inability or  unavailability of capital resources
to fund capital expenditures;  and other risks described under "Risk Factors" in
Item 8.01 of the Company's  Current Report on Form 8-K filed with the Securities
and Exchange Commission on October 14, 2004.

Contact for Gasco Energy, Inc.: Investor Relations: 303-483-0044

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