Paul Moase and Barrie Wright, formerly non-executive directors, will retire from the board with immediate effect.
In a statement, chairman Michael Doyle said: “We are extremely pleased to welcome Michael Raynes and Mark Reid to the Board of SDX.
“Collectively they bring a wealth of experience across finance, the oil and gas sector and the region.
“They join the Board at an exciting stage in SDX's corporate development as we carry out important work-streams across our portfolio of exploration, development and production assets in Egypt.
“I am confident that their expertise will prove extremely valuable as we look to further grow the business."