Wentworth Resources : Limited : Ziwani-1 Exploration Well Drilling
05/02/2012| 03:41am US/Eastern
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2 MAY 2012
WENTWORTH RESOURCES LIMITED
("Wentworth" or "the Company")
ZIWANI-1 EXPLORATION WELL
DRILLING UPDATE
Wentworth wishes to provide an update of the Ziwani-1
exploration well in the Mnazi Bay Concession,
Tanzania.
The well, which was spudded on February 1, 2012, has
now been drilled to a depth of 2,671 meters and full logging
operations have been completed. Further to the announcement
of April 10, 2012 regarding the encountering of gas shows,
the partners have identified a gas bearing zone between 1,106
and 1,109 meters and are conducting testing operations. The
zone to be tested is a new reservoir interval, not previously
encountered in the Mnazi Bay Block. The reservoir is a clean
limestone of Pliocene age which exhibited strong gas shows
during drilling (4.3% Total Gas). Petrophysical
interpretation of wireline logs indicates a pay zone with 17%
porosity and 78% hydrocarbon saturation indicating good
reservoir quality. A Drill Stem Test will be conducted to
establish the flow rate which can be achieved from this
reservoir interval. Although several sandstone intervals of
Oligocene/Eocene age were penetrated deeper in the well,
logging proved these to be water bearing. The well has now
been plugged back to enable the Pliocene limestone to be
tested.
There can be no assurance that any flow rate achieved
will prove to be commercial but the information acquired is
expected to be valuable in respect of knowledge of the basin
for further exploration. Wentworth will provide further
information once the well test is complete.
About the Mnazi Bay Concession
The Mnazi Bay Concession Area is located in coastal,
south-eastern Tanzania in the Ruvuma (Rovuma) Basin. The area
lies between Aminex and Solo Oil's Ruvuma Concession Area
and Ophir Energy and BG Group's offshore Block 1. Ophir
and BG Group's Chaza-1 gas discovery lies just northeast
of Mnazi Bay's marine border. The 756 km˛ concession area
contains two discovered Tertiary aged gas fields (Mnazi Bay
and Msimbati) and holds additional Tertiary, Cretaceous and
Jurassic hydrocarbon potential. Five wells have been drilled
to date: MB-1, MB-2, MB-3, MS-1X and Ziwani-1, and all five
wells encountered hydrocarbons. MB-1 is currently producing
gas at a rate of 1.7-2.0mmscf/d and this gas is transported
via an 8", 27 kilometre pipeline to the Mtwara Power
Plant where it generates electricity for numerous local
communities.
END
Enquiries:
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Wentworth
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Bob McBean, Executive Chairman
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rpm@wentworthresources.com
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Eric Fore, Finance, Investor & Public
Relations Manager
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etf@wentworthresources.com
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Panmure Gordon
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Nominated adviser & broker
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+44 (0) 20 7459 3600
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Katherine Roe
Brett Jacobs
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