Nov 21 (Reuters) - Far Ltd FAR.AX
* Potential for 1.1 billion barrels of oil offshore the Gambia
* Has undertaken a detailed geotechnical evaluation for its 2 offshore blocks in Gambia
* An independent resources review conducted by RISC for Far's a2 & a5 Gambia blocks supports Far's assessment
* Operations are underway to prepare for drilling in late 2018
* Combined prospective resources for two blocks assessed 926 million barrels net to Far