English to Russian Tech/Engineering Petroleum Eng/Sci нефть

the tight rig market - Узкий рынок станков для бурения ?
fewer здесь можно перевести как "меньшего количества"?

Several significant discoveries were made in 2005, despite the fact that the exploration activity was lower than expected. 2005 also brought discoveries in less- explored areas in the Norwegian Sea. The tight rig market is the main cause of fewer exploration wells being drilled in 2005 than were expected at the begin- ning of the year.