Established a cartel binding major oil companies to seek concessions in former Ottoman territories only through joint consortia, shaping Middle East oil development for two decades.
Key Facts
- Date signed
- July 31, 1928
- Signing location
- Ostend, Belgium
- Share per major partner
- 23.75% each (four parties)
- Gulbenkian's share
- 5%
- TPC renamed
- Iraq Petroleum Company (IPC) in 1929
- Agreement duration
- Held for approximately twenty years
By the Numbers
Location
Cause → Event → Consequence
The discovery of the vast Baba Gurgur oil field in Iraq and TPC's acquisition of an Iraqi concession prompted its partners—Anglo-Persian, Royal Dutch Shell, Compagnie Française des Pétroles, and Near East Development Corporation—to formalize their corporate arrangement. The roots of the self-denial clause traced back to clause 10 of TPC's March 1914 Association Agreement.
On July 31, 1928, TPC partners signed the Red Line Agreement in Ostend, Belgium. Each of the four corporate partners received a 23.75% stake in TPC's crude output, with Calouste Gulbenkian retaining 5%. A self-denial clause bound all shareholders to pursue oil interests within former Ottoman territories exclusively through jointly composed consortia, demarcated by a red line drawn on a map of the Middle East.
The agreement effectively created an oil cartel controlling exploration across most of the former Ottoman Middle East, excluding Kuwait and areas where Saudi Aramco and Bahrain Petroleum Company operated. TPC was renamed the Iraq Petroleum Company in 1929, and IPC monopolized regional oil exploration for roughly two decades, influencing the pace and structure of Middle Eastern oil development until the cartel's eventual dissolution.
Political Outcome
Formation of a binding cartel restricting independent oil concessions within former Ottoman territories; TPC renamed Iraq Petroleum Company in 1929; IPC monopolized regional oil exploration for approximately twenty years.
Competing independent oil interests among TPC shareholders in ex-Ottoman territories
Unified cartel requiring all concessions within the red line to be pursued jointly through IPC-composition consortia