Saudi Arabia reserves, production Looking just at the historical growth of original oil in place (OOIP) as shown in Fig. 2a ("Saudis refute claims of oil field production declines" by Maureen Lorenzetti, OGJ, Mar 8, 2004, p. 24) and widely reported reserves over the last several years, the numbers seem compatible to an interested outsider. Apparent recovery factors averaged just below 30% in the early 1980s, then jumped to 40% in the mid-1980s when Saudi Arabia added nearly 100 billion bbl of proved reserves and incurred criticism that they were "political." A 40% recovery factor is certainly not unreasonable.There is some reason for concern at the post-2033 decline rate shown in Fig. 3, ...

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