Active integration of domestic players with the transnational companies became the main vector of development of the Russian oil service market. The structure of distribution of the market of geophysical services between its basic participants is considered and analysed. The reasons leading to integration of the basic players of branch with the foreign companies, and also pluses and minuses of these mergers and acquisitions are established. The carried out analysis has allowed to offer some variants of the state support to the market, and also has helped to draw conclusions on prospects development of the Russian market of geophysical service in the future.