Pakistan Petroleum Limited (PSX: PPL) Thursday announced the successful execution of a water shut-off operation at Shahdad X-1 in the Gambat South Block, District Sanghar, Sindh.
In a notice to the Pakistan Stock Exchange (PSX), PPL said this intervention has substantially enhanced gas production, increasing the flow rate from 2.2 MMscfd to 8.4 MMscfd, while drastically reducing water production from 3,000 BPD to just 26 BPD – a significant achievement in optimizing well performance.
Shahdad X-1, a sweet gas well drilled in 2012 and operational since 2015, originally produced 26 MMscfd of gas. By 2024, the production had declined due to severe water production, as confirmed by a Production Logging Tool (PLT) survey in August 2024, which identified inter-layer crossflow requiring effective remediation.
The company collaborated with a coiled tubing service provider to develop a targeted solution. After evaluating cost, risk, and operational feasibility, an acid-soluble cement was selected for isolating the water-producing zones.
Execution involved overcoming fluid losses during well-kill operations using Loss Circulation Material (LCM) and brine for stabilization. Cement placement was precisely achieved, followed by a 32-hour curing period, and validated through slickline confirmation, it added.
PPL further said this milestone represents the first water shut-off operation in the Gambat South Block and the debut use of acid-soluble cement technology in Company’s portfolio. The success highlights Company’s technical expertise, operational excellence, and commitment to enhancing production from mature fields.
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