The Oil Drum: Local

Regarding water production, this is a natural and unavoidable aspect of oil and gas production and often intentionally induced by water flooding. Water injection helps boost production by sweeping the oil out of the reservoir and maintaining its pressure. We are doing this in Texas every day, producing more than 1 million barrels of oil with a water-oil ratio over 12! In Prudhoe Bay this ratio is more than 3. By comparison, the estimated water-oil ratio for Saudi Arabia is slightly over 1. When considered with the long-term high oil production, this low ratio is a strong testimony to the thickness and size of Saudi oil zones and their ability to sustain this production for some time. Depending on specific location, each barrel of produced water may cost the operator $0.10-$2.00. At today's prices, one can produce 20 barrels of water for each barrel of oil and still maintain a profitable operation. And the Saudis are a long way from it!