Block 70 is an onshore block that includes the shallow undeveloped Mafraq heavy oil field.  The Block is located in the middle of the prolific oil producing Ghaba Salt Basin in the central part of Oman. The Mafraq oil field was discovered by Petroleum Development Oman (PDO) in 1988 and was further delineated by four wells and 3D seismic in stages until 2010. Two wells were placed on pump production tests, of which one was placed on an extended test in order to prove long term productivity.  

The Block covers an area of 639 km² and is covered by both 2D and 3D seismic data that has been acquired by previous operators has been made available to Maha.

8 wells have been drilled within the block boundary, 5 of which are on the Mafraq oil field.