Terms and expressions related to oil and gas production, drilling, flushing, cementing and cementing of oil and gas wells, development of oil and gas fields, underground hydraulics, reservoir physics, methods of processing the bottomhole zone of wells are given. Terms for drilling and production equipment are given. Offshore drilling terminology included. At the end of the dictionary is an appendix that includes a list of English abbreviations and tables. Designed for engineering and technical workers of drilling enterprises of the oil and gas industry, translators and students of oil universities and faculties.