William Knox D'Arcy

William Knox D'Arcy was a British businessman whose 1901 oil concession in Persia led to the 1908 discovery at Masjed Soleyman and the founding of the Anglo-Persian Oil Company.

D'Arcy Concession: A 1901 agreement granting William Knox D'Arcy exclusive rights to explore for and extract oil across much of Persia. This concession authorized the exploration that defined D'Arcy's Persian venture.
Oil exploration: The search for underground petroleum deposits using geological study, geophysical surveys, and drilling. D'Arcy's concession depended on turning uncertain geological prospects into drill targets.
Anglo-Iranian Oil Company: The name adopted by the Anglo-Persian Oil Company in 1935, before it became the British Petroleum Company in 1954. The company D'Arcy helped establish became a central actor in British-Iranian oil relations.
Qajar Iran: The Iranian monarchy ruled by the Qajar dynasty from 1789 to 1925. The Qajar government granted D'Arcy's oil rights while seeking revenue and foreign investment.
Masjed Soleyman: An Iranian city where oil was struck in 1908, establishing the first major commercial oilfield in the Middle East. The discovery there fulfilled the concession's promise after years of costly drilling.
George Bernard Reynolds: A British geologist and oil prospector who led drilling operations in Persia under D'Arcy's concession. Reynolds directed the drilling campaign that made the 1908 discovery.
Anglo-Soviet invasion of Iran: The 1941 occupation of Iran by British and Soviet forces during World War II, partly to secure supply routes and strategic resources. British control of Iranian oil gave the country heightened strategic significance during the war.
William Knox D'Arcy's 1901 concession agreement: The agreement between D'Arcy and the Qajar government that granted oil rights over most of Persia for sixty years. The concession's unusually broad scope contrasts with later efforts to reclaim Iranian control.
Anglo-Persian Oil Company: A British oil company founded in 1909 to develop D'Arcy's Persian oil discoveries; it later became British Petroleum. The company organized and financed production after D'Arcy's discovery.
Oil well: A borehole drilled into an underground reservoir to extract petroleum or natural gas. The venture's outcome depended on drilling wells deep enough to reach productive formations.

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