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The gas will be sold from the Mnazi Bay and Msimbati fields in the south of the country, via the government-owned Mtwara to Dar es Salaam pipeline.
Maurel is the operator of the Mnazi Bay joint venture with a 48.06% stake, while Wentworth has 31.94% and Tanzania Petroleum Development Corporation's interest is 20%.
The JV will supply up to a maximum of 80 million cubic feet of gas per day during the first eight months of operation, with an option to increase to 130MMcfd for up to 17 years.
Initial delivery is expected in the first quarter of 2015, with the gas selling at a fixed price of approximately $US3.07 ($A3.40) per thousand standard cubic feet.
The JV will construct and commission the necessary surface infrastructure for delivering gas into the pipeline from its existing wells.
There are four wells spread out across both JV fields, which are expected to be capable of fulfilling the 80MMcfd requirement.
The JV is also set to process and interpret recently acquired 2D seismic data from both fields in a bid to determine targets for a further development drilling campaign aimed at reaching the 130MMcfd mark.
The gas sales agreement will enable Maurel to generate a second source of income alongside its operations in Gabon.
