In August 2019, Parex Resources reported oil in the Cepsa-operated Tamariniza 1 new-field wildcat (NFW) on the Merecure Block of the Llanos Basin. Tests yielded some 800 bo/d gross. The well was spudded on 12 March 2019 and reached a total depth (TD) of some 1,577 m (5,173 ft) on 25 March 2019. Cespa operates the Merecure Block with 70% interest, while partner Perenco holds the remaining 30%. Acquired in Q1 2019, Parexâs 35% operating interest on the Merecure is subject to terms of regulatory approvals. Â   Background information    In      mid-May 2014, industry sources reported that Cepsa is testing the Alazan      Norte 1 new-field wildcat (NFW) well in the Merecure Block, located in the      Llanos Basin. The well was spudded on 5 April 2014, and reached total      depth (TD) of 1,860 m (6,102.6 ft) - however details have not been      released. The C7 is the main target. The operator drilled one well in the      block, Alazan 1 NFW, in early 2012, which was plugged and abandoned      (P&A) dry. The interest holders in the block, located in the Llanos      Basin, are the operator Cepsa with 70% and Petrobras with the remaining      30%. Cepsa announced on 26 March 2013 its plans to farm out 25% of the      block.  In      December 2014, Cepsa continues plans for a 3D seismic program over the      Merecure Block, located in the Llanos Basin. The Yarumo 3D acquisition      will include some 150 sq km and is slated to commence in January 2015. The      operator completed a 330 sq km 3D seismic survey over the block in 2012.      The interest holders in the Merecure Block are operator Cepsa with 70% and      Perenco with the remaining 30%.  In      November 2008, Cepsa farmed-out a 30% interest in the block to Petrobras.      On 15 September 2008, Cepcolsa signed an Exploration & Production      contract with ANH for the 2,383.89 sq km Merecure Block, approval was      received on 8 August 2008. The block is located in the Llanos Basin in the      Casanare Department and was carved out of the Agua Verde TEA. During the      16-month Phase I, the company was required to acquire 170km of new 2D      seismic data. On 21 February 2008, prior to the 21 August 2008 expiry of      the Agua Verde Technical Evaluation Agreement (TEA), Cepsa filed an      application for an E&P contract (Merecure) over a portion of the area.
Tamariniza 1 new-field wildcat (NFW) (Cepsa 70% op., Perenco 30%) on the Merecure Block, oil disc. tests yielded some 800 bo/d gross. TD=1577m  25 March 2019. Cespa operates the Merecure Block with  interest, while partner Perenco holds the remaining 30%.