About Thomson ReutersMainland Resources, Inc. Places Second Successful Haynesville Shale Well on Production...
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Mainland Resources, Inc. Places Second Successful Haynesville Shale Well on
Production in DeSoto Parish, Louisiana



HOUSTON, Sept. 21 /PRNewswire-FirstCall/ -- Mainland Resources, Inc., (OTC
Bulletin Board: MNLU 5MN-Frankfurt) a Nevada Corporation (the "Company")
reports that the Company and its Operator have placed the Dehan et al 15H #1
well (Section 15, 13N-14W, DeSoto Parish, La.) on production.

The Dehan et al 15H #1 well had an initial production rate of 7.643 Mmcfe/d on
a 14/64" (inch) choke with 8,396# flowing casing pressure on 8/18/09. The well
has averaged 8.3 Mmcfe/d with a 8478# flowing casing pressure from 8/18/09 to
9/4/09. Mainland owns a 22.54% working interest in the well. The initial press
release announcing the spudding of the well dated May 14, 2009 indicated that
Mainland owned a 25.42% working interest. Upon completion by the Operator of
the drilling title opinion for the drilling unit, it was determined that
Mainland owned a 22.54% working interest in the well.

The Dehan et al 15H #1 is the third well to be drilled and second to be
completed by the Operator in the Haynesville shale on Mainland's leases. The
second well (Stevenson-Douglas 16-1) was drilled to 10,800 feet and the
intermediate casing was run to this depth using a shallow rig. The lateral
portion of the well is expected to be drilled with the well subsequently
completed in the fourth quarter of this year.

The first well drilled (Griffith 11 #1) had an initial production rate of 23.3
Mmcfe/d on a 28/64" (inch) choke. The Dehan well has been kept on a tight
choke of 14/64" (inch), which is one-half of the choke size placed on the
Griffith well. The Operator has been performing tests with a number of wells
in order to determine if increased backpressure will affect well productivity.
The Dehan well is one of the test wells.

In order to compare the early life well performance of the Griffith well with
the Dehan well and consider the different flowing conditions (ie. choke size,
tubulars etc.), Mainland Resources engaged the Petroleum Engineering Firm,
W.D. Von Gonten & Co. to carry out a well test analysis comparison. Von Gonten
& Co. has completed numerous North Louisiana Haynesville Shale studies and is
very experienced in the early stages of this play. The well test analysis
comparison shows that there is no significant difference in the productivity
between the Griffith and Dehan wells. The permeability-thickness map also
shows both wells to be in a very good area.

Company President Mike Newport states, "Bringing the Dehan well online further
validates our acreage in our DeSoto Parish, Louisiana leases. We now have our
second highly productive Haynesville shale gas well delivering gas and
generating revenue."


Buck