ExxonMobil to Build Commercial Demonstration Plant to Remove Carbon Dioxide from Natural Gas

ExxonMobil announced today it is committing more than $100 million to

complete development and testing of an improved natural gas treating

technology which could make carbon capture and storage more affordable

and significantly reduce greenhouse gas emissions.
The company plans to build a commercial demonstration plant near

LaBarge, Wyoming, where it will use ExxonMobil´s

Controlled Freeze ZoneTM technology, known as

CFZTM. CFZTM is a

single-step cryogenic separation process that freezes out and then melts

the carbon dioxide and removes other components including hydrogen

sulfide, which is found in so-called sour gas. If successful, the

process will reduce the cost of carbon dioxide removal from produced

natural gas.
"This technology will assist in the

development of additional gas resources to meet the world´s

growing demand for energy and facilitate the application of carbon

capture and storage, to reduce greenhouse gas emissions," said Mark Albers, senior vice president of Exxon Mobil Corporation

(NYSE:XOM).
Using the CFZâ„¢ process, the carbon dioxide and

other components are discharged as a high-pressure liquid stream for

injection into underground storage or for use in reservoir management to

enhance oil recovery. Besides reducing the cost of separation

transportation and reinjection, the CFZâ„¢ process can eliminate the use of solvents, sulfur plants and carbon

dioxide venting in processing of the natural gas.
The new demonstration plant will advance the CFZâ„¢ technology to commercial application, and be located at ExxonMobil´s

Shute Creek Treating Facility. It will process about 14 million cubic

feet of gas per day for injection and test a wide range of gas

compositions to evaluate the extent of its applicability to the world´s

undeveloped gas resources.
Construction will commence this summer for operational startup in late

2009. Testing is expected to occur over one to two years. The detailed

engineering, procurement, and construction management will be provided

by URS Washington Division.
CFZâ„¢was developed by ExxonMobil Upstream

Research Company and has undergone significant improvements since the

1980s, when, in an industry first, it proved the concept of freezing

carbon dioxide in natural gas separation with a CFZâ„¢pilot plant.
ExxonMobil has more than 50 years of large-scale sour gas production

experience, which includes design and operation of the two largest

carbon dioxide and hydrogen sulfide injection projects in the world. The

company has developed industry-leading expertise in managing safety

reliability and technical challenges associated with highly sour oil and

gas developments.
ExxonMobil is a world leader in carbon management technologies and has

researched and developed carbon-handling technologies for more than 30

years. In addition to our in-house research programs, ExxonMobil

supports carbon capture and storage research at the International Energy

Agency´s Greenhouse Gas Research &

Development Program, the Massachusetts Institute of Technology, Georgia

Tech, the University of Texas and Stanford University. The company

participates in the U.S. Department of Energy´s

Southeast Regional Carbon Sequestration Partnership and is working with

the European Commission and other companies on the CO2ReMoVe project to

evaluate a range of carbon injection and storage technologies in Norway

Algeria and Germany.
The resulting technologies, including CFZâ„¢

could play an important role in future widespread use of carbon capture

and storage to significantly reduce the release of greenhouse gases into

the atmosphere.
CAUTIONARY STATEMENT: Plans and projections in this release are

forward-looking statements. Actual future results, including the impact

of new technologies, could differ materially due to factors including

changes in long-term oil or gas prices or other market conditions

affecting the oil and gas industries; changes in law or government

regulation; technical difficulties; future technological developments by

ExxonMobil or others; and other factors discussed under the heading

"Factors Affecting Future Results" in the "Investors" section of our website at www.exxonmobil.com.

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