MOSCOW, June 22 (Reuters) - Mid-sized Russian oil firm Sibir Energy has re-appointed Stuard Detmer its chief executive at the request of its largest shareholder, Gazprom Neft, the company said on Monday.
The change reverses last week's management reshuffle, which saw Detmer replaced by Gazprom Neft's top legal expert Igor Tsibelman.
The annual shareholders' meeting of Gazprom Neft, the oil arm of gas export monopoly Gazprom, is scheduled for Monday, where the company's efforts to gain greater control of Sibir are likely to be discussed.
The appointment of Tsibelman last Thursday was seen as part of Gazprom Neft's drive to take operational control of London-listed Sibir after it spent more than $1 billion amassing a stake of 34 percent.
Tsibelman will now become the first deputy chief executive to Detmer, "to ensure the seamless transition of the management of the company," Sibir said in a statement. (Reporting by Simon Shuster; Editing by Jon Loades-Carter)