Wentworth Resources plc


We have a rich and successful history, having operated in Tanzania since 2004. Our Mnazi Bay asset is a low cost, onshore producing gas field which we hold a 31.95% non-operational stake in as a joint venture partner.

With our strong institutional shareholder register, and material Norwegian and UK based retail investor base, we combine our domestic expertise with an attractive and accessible investment profile.

We are a re-domiciled Jersey incorporated company, now based in the UK, having previously been headquartered in Calgary, Canada. We re-admitted to AIM on 2 November 2018 and completed our de-listing from the Oslo Børs on 13 February 2019. Through this process, we have refreshed our leadership team, adopted a leaner corporate structure, and installed an impressive dividend policy poised for significant growth.

Our Wentworth timeline


  • Jan-21 Production Guidance for 2020 set at 65-75 MMscf/d
  • Feb-21 Membership to the UN Global Compact


  • Jan-20 Katherine Roe appointed CEO of the Company
  • Apr-20 Declaration of Full Year Dividend of $2 million
  • Sep-20 Declaration of Interim Dividend of $1.2 million
  • Dec-20 Conclusion to Shareholder Consultation following Delisting from Oslo Bors
  • Average gas production at Mnazi Bay during 2020: 65.36 MMscf/d


  • Feb-19 Delisting from Oslo Børs
  • Apr-19 Reduced gas delivery pressure from 95barg to 85barg
  • May-19 Posting of first Wentworth Resource plc Annual report
  • Jun-19 Revised 2019 Production guidance to 60-75 MMscf/d
  • Jul-19 Announced implementation of dividend policy
  • Sep-19 Declaration of maiden dividend
  • Sep-19 Signing of Commercial Operations Date, bringing Mnazi Bay GSA into full effect


  • Average gas production at Mnazi Bay: 83 mmscf/day
  • Production demand increased by 170% since 2017
  • Upgrade of surface infrastructure at Mnazi Bay
  • One year extension of Rovuma Onshore Appraisal Licence received from INP
  • Entered negotiations with TPDC for realization of:
    • Commercial Operations Date (COD) of GSA
    • Extension of Development License (PSA)
    • Reduced Gas Delivery Pressure
  • Transition of Management team from Calgary to UK
  • Redomiciled Wentworth Head Office from Calgary, Canada to Reading, United Kingdom
  • Re-listed on London Stock Exchange (AIM); de-list submission to Oslo Børs


  • Average gas production at Mnazi Bay: 49 mmscf/day
  • Upgrade of surface infrastructure at Mnazi Bay continues
  • Kinyerezi 2 Power Station comes on stream adding 35 mmscf/day to demand Dec 2017


  • Average gas production at Mnazi Bay: 43 mmscf/day
  • Appraisal License for Rovuma Onshore Block approved by INP. Wentworth operator with 85% PI
  • Upgrade of surface infrastructure at Mnazi Bay:
    • Increase capacity from 10mmscf/d to 140 mmscf/day
    • Interconnect all producing wells to GPF
    • Install revenue quality gas metering station
    • Install waste water management system


  • Aug-15 first gas deliveries from Mnazi Bay
  • MB-4 well drilled
  • MB-2, MB-3, MB-4 and MS-1X wells tied into gathering facilities
  • Drilled 2nd Exploration well in the Rovuma Onshore Block: Kifaru
  • Drilled successful production well in Mnazi Bay Block: MB-4 Well
  • Signed Mnazi Bay GSA with Ministry of Energy, Tanzania and TPDC
  • Wentworth apply for Appraisal License of Tembo Discovery
  • First Gas into the TPDC operated National Natural Gas Pipeline (Mtwara-Dar es Salaam)


  • Sept-14 GSA for Mnazi Bay and Msimimbati gas fields signed
  • 2D High Resolution Seismic 281km Acquisition & Interpretation
  • Streamlined Corporate Structure and closed Tanzanian and Jersey holding and affiliate companies
  • Drilled Tembo Exploration well onshore Rovuma Basin (Technical Gas discovery)


  • 225km² 3D Seismic  Acquisition & Interpretation over Mnazi Bay
  • Negotiations commence for a Gas Sale Agreement with TPDC and Ministry of Energy (MoE)
  • TPDC construct National Natural Gas Pipeline from Mtwara to Dar es Salaam (36” x 550kms)
  • 2004-2010 Cost Pool Audit and Verification with TPDC for Mnazi Bay Operations


  • Ziwani-1 well drilled
  • Sale of Power Station at Mtwara to TANESCO
  • Wentworth buys Cove Participation Interest (PI) in Mnazi Bay Block ( to 32%) and Rovuma Onshore Block (to 15%)
  • 225km² 3D Seismic Acquisition & Interpretation over Mnazi Bay


  • Close Umoja Light Company and hand transmission and distribution franchise back to TANESCO
  • Drilled Ziwani Exploration onshore Well near Mtwara
  • Signed MoU with TPDC for construction of a Methanol Plant at Mtwara


  • Reverse take-over of Artumas by Wentworth Resources Ltd
  • Extended 33 KV grid to supply Madimba and Msimbati


  • Operated the Mtwara Energy Project (MEP) providing electricity  to 6 major towns in the Mtwara region
  • Farm-out Mnazi Bay to M&P and Cove Energy
  • Farm-out of Rovuma Onshore Block to Anadarko, Maurel & Prom (M&P) and Cove Energy
  • Drilled Mocimboa Exploration Well in Rovuma Onshore Block in Mozambique


  • Seismic Campaign in Rovuma Basin: 2D and 3D (181km²) Seismic Acquisition & Interpretation
  • Signed MEP Agreement with Ministry of Energy for vertically integrated electric power supply to Mtwara Region including Gas supply, Electricity Generation, Transmission and Distribution
  • Built out 33kV electricity network from Mtwara to connect major towns in the region


  • Commissioned Mtwara Power Plant
  • Signed Power Purchase Agreement (PPA) with TANESCO
  • Drilled MS-1X gas discovery


  • Drilled 2 successful wells in Mnazi Bay Block: MB-2, MB-3
  • Signed and concluded Development License for Mnazi Bay Block with Ministry of Energy, Tanzania
  • Constructed
    • Gas Processing Facility (GPF) at Msimbati
    • Mnazi Bay – 28km 8″ Mtwara Pipeline
    • Gas Receiving Facility (GRF)
    • 18 MW Gas-fired Power Plant in Mtwara
  • Signed Joint Operating Agreement (JOA) granting TPDC 20% carried interest


  • Successful re-entering of Mnazi Bay MB-1 discovery well drilled by AGIP in 1982
  • Construction of the Mnazi Bay Camp Facilities and jetty


  • Mnazi Bay Production Sharing Agreement (PSA) signed with Tanzania Petroleum Development Corporation (TPDC)
  • 3D Marine 288.5km² and 2D Land seismic 90km acquisition


  • MoU with Ministry of Energy (MOE), Tanzania, for Mtwara Energy Project (MEP)