Allis-Chalmers Energy Inc. is an American,

Houston Houston (; ) is the most populous city in Texas, the most populous city in the Southern United States, the fourth-most populous city in the United States, and the sixth-most populous city in North America, with a population of 2,304,580 in ...

-based, oil company which provides both services and equipment to

oil An oil is any nonpolar chemical substance that is composed primarily of hydrocarbons and is hydrophobic (does not mix with water) & lipophilic (mixes with other oils). Oils are usually flammable and surface active. Most oils are unsaturated ...

and

natural gas Natural gas (also called fossil gas or simply gas) is a naturally occurring mixture of gaseous hydrocarbons consisting primarily of methane in addition to various smaller amounts of other higher alkanes. Low levels of trace gases like carbo ...

companies throughout the

Gulf of Mexico The Gulf of Mexico ( es, Golfo de México) is an oceanic basin, ocean basin and a marginal sea of the Atlantic Ocean, largely surrounded by the North American continent. It is bounded on the northeast, north and northwest by the Gulf Coast of ...

and in surrounding states and countries.

History

The name "Allis-Chalmers" is most well known as the name of the former company,

Allis-Chalmers Manufacturing Company Allis-Chalmers was a U.S. manufacturer of machinery for various industries. Its business lines included agricultural equipment, construction equipment, power generation and power transmission equipment, and machinery for use in industrial set ...

. In February 2011, Allis-Chalmers Energy merged with Seawell to form specialist drilling and well service company Archer.2011 merger info
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References

Companies formerly listed on the New York Stock Exchange Oil companies of the United States Companies based in Houston {{US-energy-company-stub