Illisha-1 is the third well drilled by Gazprom International under the existing service contract with Bangladesh Petroleum Exploration Company (BAPEX). In 2022–2023, Gazprom International has drilled Tabgi-1 and Bhola North-2 — two gas wells in Bhola Island. Both wells have shown a commercial gas flow. The combined production potential of the three wells exceeds 60 million cubic feet (1.6 mln cubic meters) per day.
Presently, almost all gas produced in Bhola is used as fuel for gas-fired power plants. The issue of transporting gas to the continental part of the country and transferring it to the national gas transportation system is being considered.
Over the past 10 years, Gazprom International has designed and drilled 20 gas wells in Bangladesh under service contracts with the country's state-run gas producers.