Wentworth, the Oslo Stock Exchange (OSE: WRL) and AIM (AIM: WRL) listed
independent, East Africa-focused oil & gas company, is pleased to announce the
results of its annual independent evaluation of the gas reserves within the
Mnazi Bay Concession in Tanzania, carried out by RPS Energy Canada Ltd. ("RPS"),
Calgary, Canada on behalf of Maurel et Prom (Operator) and Wentworth Resources.

Highlights (net to Wentworth) as at 31 December 2017:

* Net Proved + Probable (2P) reserves are valued at US$159.6 million after tax
(NPV10)
* Proved (1P) reserves: 97.3 Bscf gross (16.2 MMboe); 72.7 Bscf net (12.1
MMboe)
* Proved + Probable (2P) reserves: 176.4 Bscf gross (29.4 MMboe); 115.1 Bscf
net (19.2 MMboe)
* Proved, Probable & Possible (3P) reserves: 265.0 Bscf gross (44.2 MMboe);
155.8 Bscf net (26.0 MMboe)

The Company experienced a strong year of production in 2017 with good well
performance; there were no significant problems or issues identified in the
wells, underpinning the quality of the Company's assets in Tanzania. Volumes
have begun to ramp up significantly with the first two turbines at Kinyerezi-2
now operational and the remaining four turbines expected to be commissioned
during this year. Further sources of demand are also expected to materialise
and, with the existing reserves providing a solid foundation, the Company is
well placed to grow production from the Mnazi Bay concession in the near future.


Geoff Bury, Managing Director, commented:

"Our annual updated reserve report continues to support the quality of our
reserves in Mnazi Bay. The results of this independent reserve report are
consistent with the previous year, less the gas produced during 2017, and
reinforces the potential of the Mnazi Bay fields. With strong average production
delivered last year and significantly higher volumes currently being
experienced, combined with the continued successful performance of our existing
wells and all the necessary infrastructure in place, we look forward to
sustained production from our valuable Tanzania asset."

Mnazi Bay, Tanzania Reserves:

Certain key extracts from RPS' Reserves Assessment follow and the complete
report will be made available on the Company's website at
www.wentworthresources.com.