On 18 February 2019, Sound Energy plc (Sound) announced that it will test the Tendrara 10 (TE-10) exploration well in the Tendrara licence, Eastern Morocco in mid-March 2019 with unstimulated flow tests to be conducted on several intervals between 1,899 m and 2,070 m.Â  The stimulated production will flow in late March, over the most prospective reservoir zones, and are expected to take at least 30 days.Â Â   The company has upgraded the net pay estimates, from up to 10.5 m to up to 15.4 m, with a mid-case of 13.1 m and a low case of 9.5 m. Â This net pay is distributedÂ throughout the 110 m gross reservoir interval identified between 1,899 m and 2,009 m.  Sound Energy announced that following more analysis, it has now estimated the gas resources discovered by TE-10 across both the structural and stratigraphic trapping geometries. The North East Lakbir structural-stratigraphic closure has been assessed with a mid-case potential on a gross (100%) basis of 1,430 Bcf gas originally in place ("GOIP") with a 3,408 bcf GOIP upside case and a 584 Bcf GOIP low case.Â  The volume range in the structural closure alone has been assessed with a mid-case potential on a gross (100%) basis of 81 Bcf GOIP, 170 Bcf GOIP upside case and a 30 Bcf GOIP low case.Â    The company has previously reported that following the acquisition of the vertical seismic profile (VSP), the gas shows observed are believed to extend below the currently mapped structural closure at approximately 1,958 m MD.Â  The gas accumulation may extend updip into the stratigraphic trap.Â    The well was drilled to a TD of 2,218 m in early January 2019. This is 209 m below the base of the TAGI sandstone sequence, in a section of mudstones and minor thin bedded sandstones, with gas shows down to 2,070 m.  Sound operates the Tendrara licence with a 47.5% interest. Partners are Schlumberger, which holds a 27.5% interest and the state company ONHYM holds the remaining 25%.  The company also confirmed that a gas sample (comprising C1 to C5 hydrocarbons) was successfully recovered from one of these pay intervals at approximately 1,937 m using a modular formation dynamics tester system (MDT).   Sound reported on 27 December 2018 that the TE-10 exploration well has been drilled to a depth of 2,099 m, penetrating the top of the TAGI sand layer at a depth of 1,892 m. Log preliminary results indicate the presence of gas bearing sands at the TAGI layer. A potential gross reservoir interval from 1,899 m to 2,009 m with gas shows observed from 1,908 m to 2,030 m.Â  An initial estimated net pay of up to 10.5 m and an average porosity of 8% was identified.   The well, which was spudded on 7 December 2018, targets the North-East Lakbir prospect, located 20 km north-east of TE-5 Horst. It has a planned TD of 2,200 m.  The well was designed to target the TAGI stratigraphic pinch-out play, with GOIP estimated at 2.7 Tcf mid case (4.5 Tcf upside case and a 1.5 Tcf low case) with a chance of success of 18% (Sound internal estimate). TE-10 lies within the stratigraphic trap, located on a smaller structural closure which has a mid-case potential, on a gross basis, of 128 Bcf gas originally in place ("GOIP") (210 Bcf GOIP upside case and a 75 Bcf low GOIP case), with a Sound internally estimated chance of success of 26%.   TE-10 is part of the companyâs plan to drill three wells (TE-9, TE-10 and TE-11) in the Tendrara licence. The company expects each of the three wells to cost around USD 10 million.  Background Information  On 24 November 2016, Sound Energy plc (Sound) announced that the operations on TE-7 well in the Tendrara licence, Hauts Plateaux are completed. Towards the end of the clean-up process, post stimulation, the gas flow rate reached 32 MMscf/d through a 40/64 choke with a tubing head pressure of 230 bar. Based on the clean-up phase, the company expected the well flow rate potential to be higher than 40 MMscf/d with a 50% drawdown. The company will now proceed to an extended well test to confirm production sustainability. On 2 November 2016, the company announced that well yielded 8.8 MMscf/d of gas through a 32/64â choke during 24 hours. This initial, open hole test was conducted in the first 28% of the gross interval (TAGI reservoir). The Company planned to complete the mechanical stimulation and well test of the entire sub-horizonal section.Â   Sound revealed the extended test results of the Tendrara 7 (TE-7) sub-horizontal appraisal well in July 2017. The well yielded about 1 Bcf of gas over a period 56 day that ended in January 2017. TE-7 has shown a very strong pressure recovery. Bottom hole pressure was recorded at 393.8 Bar, compared to a final flowing reservoir pressure of 140 Bar in January 2017, just after the test and the original reservoir pressure of 422.6 Bar. The pressure build up is expected to last a further six to eight months because of the low permeability of the reservoir. The company said reservoir simulations suggest that, once the reservoir has reached full pressure stabilization, the estimated connected gas volumes in place (gross, unrisked) for production from TE-7 are 40 Bcf. It is believed that the gas charge originates from a carbonated rich marine source (Devonian).  Â On 23 May 2017, Sound Energy announced that the Tendrara 8 (TE-8) outpost in the Tendrara licence in the Hauts Plateaux, east of Morocco was completed after drilling 359 m in the Paleozoic and identified a series of Westphalian sandstones between 2,762 and 3,120 m. The company said âthe sandstones are confirmed to lie in a separate pressure regime to the overlying TAGI play in a large tilted fault block beneath the TE-5 horst and the Lakbir High. The well has encountered gas shows in the Westphalian interval and the analysis of petrophysical data suggests that the well is likely to produce with mechanical simulation. The company plans to drill few wells targeting the Paleozoic, after the reprocessing of the existing 3D seismic.Â  The TE-8 well has also penetrated 114 m of TAGI I reservoir with gas shows.   On 19 November 2018, Sound abandoned the Tendrara 9 (TE-9) exploration well ('A1' Structure), in the Tendrara licence as dry hole. The well has encountered 60 m of dolomitized silty sandstone of the Triassic TAGI layer (primary target) and 630 m of a succession of fine sandstones, siltstones and mudstone of the Upper Carboniferous (Westphalian) layer, which is the secondary target. The petrophysical analysis of the wireline data indicates that the intervals are low porosity and poor quality.
Sound Energy plc (Sound) announced that it will test the Tendrara 10 (TE-10) exploration well in the Tendrara licence, Eastern Morocco in mid-March 2019 with unstimulated flow tests to be conducted on several intervals between 1,899 m and 2,070 m.  The stimulated production will flow in late March, over the most prospective reservoir zones, and are expected to take at least 30 days.   The company has upgraded the net pay estimates, from up to 10.5 m to up to 15.4 m, with a mid-case of 13.1 m and a low case of 9.5 m.  This net pay is distributed throughout the 110 m gross reservoir interval identified between 1,899 m and 2,009 m. Sound Energy announced that following more analysis, it has now estimated the gas resources discovered by TE-10 across both the structural and stratigraphic trapping geometries. The North East Lakbir structural-stratigraphic closure has been assessed with a mid-case potential on a gross (100%) basis of 1,430 Bcf gas originally in place ("GOIP") with a 3,408 bcf GOIP upside case and a 584 Bcf GOIP low case.  The volume range in the structural closure alone has been assessed with a mid-case potential on a gross (100%) basis of 81 Bcf GOIP, 170 Bcf GOIP upside case and a 30 Bcf GOIP low case