Industry sources said in late September 2018 that Equinor is exiting the Colombian deepwater GUA OFF-1 Block. Operator Repsol in March 2017 applied to the National Hydrocarbon Agency (ANH), to convert the block o an E&P licence from a Technical Evaluation Agreement (TEA). The current block participants are Repsol (operator) with 30% WI, state oil company Ecopetrol with 50% WI, and Equinor with the remaining 20%. Equinor acquired its 20% stake from Repsol back in 2015. With Equinor leaving as the block converts to an E&P contract, Repsol will reacquire its 20% WI, to hold 50% WI once again, it is thought. No wells have been drilled on the block, although multiple 3D seismic surveys have taken place, most recently a 2,700 sq km survey in early 2015. Equinor also appeared in mid-September 2018 to be exiting the offshore COL-4 Block as it converts from a TEA to an E&P contract, as well as releasing its WI in the offshore Tayrona Block. Withdrawal from these three offshore Blocks, will leave Equinor with no assets in Colombia. 
With Equinor leaving as the block GUA OFF-1 Block converts to an E&P contract, Repsol will reacquire its 20% WI (->50% op, Ecopetrol 50%).