The Nigerian National Petroleum Company (NNPC) and its partner, Heirs Energies, have successfully doubled natural gas production at a key oil block, OML 17, as part of a broader strategy to boost domestic supply and ease the country's electricity shortages. The increase comes from the OML 17 oil and gas field, operated by Heirs Energies in a joint venture with the NNPC. A "rigless well intervention" unlocked an additional 135 million standard cubic feet of gas per day (MMscf/d), enough to feed multiple power plants, directly contributing to an…