Bass Strait, Australia -increased oil recovery to more than 70 percent in several ExxonMobil-operated fields by applying advanced reservoir modeling techniques, reworking existing wells, drilling new wells, and upgrading surface processing equipment.

Jay Field, Florida - recovering more than 60 percent of the oil from a geologically complex carbonate reservoir with the aid of advanced reservoir modeling techniques and by injecting nitrogen gas.

Groningen Field, Netherlands - embarked on a program to keep facilities up-to-date with respect to safety, environmental requirements, technology and operating efficiency. We expect to recover 97 percent of the gas in this very large and mature field.

Ubit Field, Nigeria - increased the amount of recoverable oil by 500 million barrels through the application of 3-D seismic, advanced reservoir modeling techniques, horizontal wells, and by upgrading surface processing equipment.

Cold Lake, Canada - increased the recovery of heavy (tar-like) oil from 10 percent to more than 25 percent by injecting steam into the formation to heat the oil and make it flow toward the producing wells.

Arun Field, Indonesia - recovering about 94 percent of the gas and 67 percent of the condensate from a mature, lean gas condensate reservoir using compositional reservoir modeling to balance gas injection and maximize condensate recovery.

Prudhoe Bay, Alaska - increased the amount of recoverable oil by 4 billion barrels through the development of advanced geologic models, injecting gas to improve oil recovery, upgrading surface processing equipment, and by using horizontal wells.

Means Field, Texas - increased reserves by 66 million barrels in a mature field by drilling new wells and by injecting water and carbon dioxide to improve oil recovery.

Brent Field, North Sea - increased the amount of recoverable oil and gas by 400 million oil-equivalent barrels through the early reduction of reservoir pressure to liberate gas from residual and bypassed oil. The use of advanced reservoir modeling, reworking existing wells, drilling new wells and and upgrading surface equipment have contributed to the increase in reserves.

Topacio Field, Equatorial Guinea - installing electrically driven multiphase subsea pumps to increase production from four wells by 6,000 barrels a day (2000).

Three-dimensional reservoir imaging ExxonMobil has the proprietary software and expertise to construct 3-D computer models that describe the geology and properties of the rock within a reservoir.

Reservoir simulation ExxonMobil is the industry-leading developer of computer programs that model the flow of oil and gas through a reservoir to the wells and surface equipment. With these tools, we can quickly experiment with well spacing and flow rates to get the most oil and gas from a reservoir. Soon we will release EMPOWERŪ, our next generation of reservoir simulation software. It combines the best elements of Exxon's and Mobil's proprietary technology and adds unique new capabilities.

Reservoir management
The amount of oil and gas likely to be recovered from a new field depends partly on where the wells are drilled, the type of wells used (vertical or horizontal), the type of hydrocarbons being produced, and whether gas or water is injected to maintain pressure. ExxonMobil's reservoir engineers are known for their ability to get the most value from oil and gas resources. That is an important advantage in the high-cost business of deepwater development.

Looking deep into the future
To predict how reservoirs will perform 10, 20 or even 30 years from now, we conduct detailed studies using some of the same proprietary modeling tools that helped us find the oil and gas to begin with. These tools are an integral part of our reservoir management technology. They allow us to accurately describe the resource, select the best well locations and design the optimal depletion rate for the field.