document: On 4 December 2018, DEA issued a press release indicating it signed an agreement to acquire all of the non-operated working interest assets held by Sierra Oil and Gas in six exploration blocks offshore in the Campeche Deep Sea and Sureste basins.    The      deal is pending formal governmental approvals.Â    The      deal value has yet to be reported.Â    Sierra      held varying non-operated working interest percentages in the six blocks      of 22.5% to 40%.Â    The      CNH-R01-L01-A7/2015 contract is the highlight of the deal with the Zama      discovery now being appraised.Â    Â DEA indicated that it is now one of the      largest acreage holders in the country with this acquisition as it is now      combined with the five blocks it has acquired through various bid rounds.   DEA acquisition of Sierra Assets in offshore Mexico â 4 December 2018          Block            Contract            Previous Operator and Partners            New Operator and Partners            Area sq km            Bid Round            Well Commitments                Area 2            CNH-R01-L01-A2/2015            Hokchi 47.5%,Talos 20%, Sierra Blanca 22.5%, Premier 10%            Hokchi 47.5%,Talos 20%, DEA 22.5%, Premier 10%            Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â  195.64               R1.1            1                Area 7            CNH-R01-L01-A7/2015            Talos 35%, Sierra 40%, Premier 25%            Talos 35%, DEA 40%, Premier 25%            Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â  468.19               R1.1            1                A4.CS            CNH-R01-L04-A4.CS/2016            PC Carigali 50%, Sierra 50%            PC Carigali 50%, DEA 50%            Â Â Â Â Â Â Â Â Â Â Â Â Â Â  2,380.34             R1.4            Â                 A5.CS            CNH-R01-L04-A5.CS/2016            Murphy 30%, Ophir 23.33%, PC Carigali 23.34%, Sierra 23.33%            Murphy 30%, Ophir 23.33%, PC Carigali 23.34%, DEA 23.33%            Â Â Â Â Â Â Â Â Â Â Â Â Â Â  2,595.78             R1.4            1                A11.CS            CNH-R02-L01-A11.CS/2017            Repsol (60%), Sierra (40%)            Repsol 60%, DEA 40%            Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â  537.20             R2.1            Â                 AP-CS-G10            CNH-R02-L04-A29.CS/2018            Repsol 30%, PC Carigali 28.33%, Sierra 25%, PTTEP 16.76%            Repsol 30%, PC Carigali 28.33%, DEA 25%, PTTEP 16.76%            Â Â Â Â Â Â Â Â Â Â Â Â Â Â  3,280.26             R2.4            2                Â             Source: IHS Markit            Â             Â© 2018 IHS Markit
summary: DEA issued a press release indicating it signed an agreement to acquire all of the non-operated working interest assets held by Sierra Oil and Gas in six exploration blocks offshore in the Campeche Deep Sea and Sureste basins.