According to reports in early-January 2018, PentaNova Energy has finalized the acquisition of participating interest the Sur Rio Deseado Este concession from Roch that was originally reported in May 2017. There are no details available regarding the cash value of the transaction, although the potential of heavy oil development in the block has been mentioned. Sur Rio Deseado Este concession covers approximately 305.48 sq km of onshore land in San Jorge Basin. The concession consists of a 50 sq km production area in the westernmost part where the Estacion Tehuelches, La Frieda, and La Frieda Oeste oil and gas fields are located, and the remaining 255 sq km exploration area where Punta Bauza discovery from 1993 is situated. Specifically, PentaNova acquired 54.14% and operatorship in the production block, and 7.92% in the exploration block where Roch is assumed to remain as the operator. The original agreement was reportedly signed by PentaNovaâs subsidiary Patagonia Oil. Furthermore, all of the acquired stakes are assigned to the companyâs other subsidiary, Alianza Petrolera Argentina, which was originally purchased from Hong Kong-based Petro AP in August 2017. Other partners in the block are Pluspetrol Black River (16.94%), San Enrique Petrolera (24.92%), and Secra (4%). In addition, PentaNova (via Patagonia Oil) was said to be in discussion to also purchase Secraâs 4% participating interest in the block back in May 2017. However, there is still no new information regarding the status of said plan. 
Argentina (San Jorge B.) (It's a petroleum rights. Please summarize by yourself). In IHS database: Sur Rio Deseado Este op. by ROCH (54.14%, MERCURIA 24.92%, PLUSPET RS 16.94%, SECRA 4.0%) to be check.