On 1 January 2018, Pakistan Petroleum Ltd (PPL) announced further details about the successful Naushahro Firoz Hor 1 (NF-Hor 1) tight gas appraisal well drilled within the Naushahro Firoz 2668-9 EL (Middle Indus Basin) onshore concession. The well was drilled to a TD of 4,940 m (3,521 m TVD) using the Hilong Oil Serviceâs âHL-17â land rig and it include 1.3 km horizontal section in the carbonates of Jurassic Chiltan Formation. The well was completed with 10-stage open hole packers and fracking sleeves within the Chiltan limestone â all 10 stages were tested which after fraccing and acidisation flowed 4.5 MMcfg/d with 1,850 psi flowing wellhead pressure. This is considered as one of the deepest and longest horizontal well in tight carbonate reservoir within the country. It was drilled as a sidetrack from the companyâs Naushahro Firoz X-1 (NF X-1) discovery well after re-entering on 11 May 2017. A 7â liner was set at 3,653 m. On 20 July 2017, PPL had announced the successful drilling of Naushahro Firoz Hor 1 (NF-Hor 1) tight gas well. The preliminary results indicated that the well flowed 1.3 MMcfg/d and 9 bc/d through 32/64â choke. This flow rate was from stage 1 whereas PPL had a plan to carry out 10 stage multi frac job which could significantly increase the flow potential.  PPL had announced the Naushahro Firoz X-1 tight gas discovery in March 2014 which was drilled to a TD of 3,773 m in the Chiltan Formation. A cased hole drill stem test (CHDST) was carried out and flow rates from the well, after acidisation, varied from a maximum of 11.2 MMcfg/d (along with 120 bc/d) at flowing wellhead pressure (FWHP) of 2,635 psia to a minimum of 1.7 MMcfg/d at FWHP of 375 psia through a 32/64â choke.  The block, which covers an area of 2,494 sq km, is located in the Naushahro Feroz and Nawabshah districts of the Sindh province. It was exclusively awarded to PPL on 4 June 2010. PPL then assigned 10% working interest in the block to Asia Resource Oil Ltd with effect from 26 May 2011, as a result, the current equity split is as follows: Pakistan Petroleum Ltd (90%, operator) and Asia Resource Oil Ltd (10%). Â 
Pakistan (Indus B.) ? op. by PPL (90.0%, ASIA RES 10.0%) in Naushahro Firoz 2668-9 EL block