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Artumas Group

Artumas Group was a Canadian petroleum company focused on natural-gas and hydrocarbon activities in Tanzania and Mozambique before changing its name to Wentworth Resources Limited in 2010.

Last updated August 31, 2026

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Overview

Artumas Group was a Canadian petroleum company whose operations centered on the Rovuma Delta Basin, a hydrocarbon region extending across Tanzania and Mozambique. Its activities included natural-gas development, hydrocarbon exploration, regional gas-export planning, and efforts to commercialize gas for local use in Tanzania. The company therefore operated across several stages of the upstream and emerging gas-development value chain rather than functioning as a consumer-facing energy brand. The group’s principal geographic exposure was in East Africa. In Tanzania, Artumas was associated with initiatives intended to develop natural-gas resources for regional export and domestic commercialization. In Mozambique, it conducted hydrocarbon exploration in the Rovuma Delta Basin. These activities placed the company in a strategically important but technically and commercially developing gas province, where infrastructure, export access, local demand, and regulatory conditions were central to project viability. Artumas was based in Canada and was listed on the Oslo Stock Exchange. The company’s public-market identity changed in September 2010, when shareholders unanimously approved a name change to Wentworth Resources Limited. Following that change, the business traded on the Oslo exchange under the symbol WRL. The renaming marked the end of Artumas Group as the company’s operating and listed name, while the underlying East African gas-development focus continued under the Wentworth Resources identity. Because the available reference material is concentrated on the company’s geographic scope, business activities, and 2010 renaming, details such as the original founding year, founders, individual executives, specific field names, production volumes, reserves, revenue, and ownership structure are not established here. Artumas is best understood as the former corporate identity of an East African-focused petroleum and natural-gas developer, rather than as a currently operating standalone brand.

History

Artumas Group was a Canadian petroleum company active in East Africa, with its business concentrated in the Rovuma Delta Basin of Tanzania and Mozambique. The company’s activities were associated primarily with natural gas and broader hydrocarbon development. Its geographic position connected it to one of the region’s important emerging gas areas, where exploration and commercialization depended on the gradual development of transport, processing, domestic-market, and export infrastructure. In Tanzania, Artumas pursued initiatives involving regional natural-gas exports and the commercialization of gas for local use. These objectives reflected two complementary commercial paths: supplying nearby markets and developing the infrastructure and arrangements needed to support larger regional or international sales. The company was therefore involved not only in resource exploration but also in planning how gas could be brought to market and integrated into Tanzania’s energy economy. In Mozambique, Artumas conducted hydrocarbon exploration in the Rovuma Delta Basin. The available material does not establish specific discoveries, production levels, reserves, field names, investment amounts, or project-completion dates, so those details are not attributed to the company here. Its Mozambique work is best characterized as exploration activity within a wider East African petroleum portfolio. Artumas was headquartered in Canada and obtained public-market visibility through a listing on the Oslo Stock Exchange. The company’s corporate identity changed in September 2010, when shareholders unanimously voted to rename it Wentworth Resources Limited. After the change, the renamed company traded in Oslo under the ticker WRL. This corporate action ended the use of Artumas Group as the company’s principal name and made Wentworth Resources the successor identity for the continuing business. The available sources provide little information about the company’s founding, early corporate development, management team, financing history, or detailed asset ownership. They also do not support reliable statements about production, financial performance, or the eventual status of individual exploration licenses. Accordingly, Artumas Group’s documented history is primarily one of an East African-focused petroleum developer that operated across Tanzania and Mozambique and then transitioned to the Wentworth Resources name in 2010.

  • 2010

    Corporate name changed to Wentworth Resources Limited

    [1]

    Artumas Group shareholders unanimously approved a change of corporate name to Wentworth Resources Limited. The renamed company later traded on the Oslo Stock Exchange under the symbol WRL.

Products and positioning

An East African-focused petroleum and natural-gas exploration and development company, with activities spanning Tanzanian gas commercialization and Mozambican hydrocarbon exploration.

  • Natural gas development

    Tanzanian natural-gas initiatives

    Artumas was involved in initiatives aimed at exporting natural gas regionally from Tanzania and commercializing gas for local use. The available sources describe these as development and commercialization activities rather than a clearly documented portfolio of branded products or finished consumer offerings.

  • Hydrocarbon exploration

    Mozambique hydrocarbon exploration

    The company conducted hydrocarbon exploration in Mozambique’s Rovuma Delta Basin. The reference material does not specify particular blocks, fields, discoveries, production volumes, or commercial output, so this entry describes the activity at the documented business-line level.

Brand decisions

  • 2010

    Adoption of the Wentworth Resources corporate identityStrategy

    Background

    Artumas Group operated as a Canadian petroleum company with East African gas and exploration interests and was listed on the Oslo Stock Exchange.

    Action taken

    Shareholders unanimously voted to change the company’s name to Wentworth Resources Limited.

    Aftermath

    The company ceased trading under the Artumas Group name and subsequently used the Wentworth Resources identity and the Oslo ticker WRL.

Recent events

  • Wentworth Resources and Vitol partner on Tanzania carbon-credit programme[3]

    Reported:

    Wentworth Resources announced a deal with Vitol under which Vitol will supply carbon credits to partially offset emissions from Wentworth's Mnazi Bay project. The companies plan to co-finance community-focused projects.

Sources3 sources

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