Company Name

Industry

Location

Revenue

Employees

Devon Energy

Oil & Energy

United States, Oklahoma

$1B and Over

1001-5000

ONEOK

Oil & Energy

United States, Oklahoma

$1B and Over

1001-5000

Magellan Midstream Partners

Oil & Energy

United States, Oklahoma

$1B and Over

1001-5000

Chesapeake Energy

Oil & Energy

United States, Oklahoma

$1B and Over

1001-5000

Continental Resources

Oil & Energy

United States, Oklahoma

$1B and Over

1001-5000

Quality Integrated Services

Oil & Energy

United States, Oklahoma

$500M to $1B

1001-5000

T.D. Williamson

Oil & Energy

United States, Oklahoma

$500M to $1B

1001-5000

Zeeco

Oil & Energy

United States, Oklahoma

$250M to $500M

1001-5000

Enable Midstream Partners

Oil & Energy

United States, Oklahoma

$250M to $500M

1001-5000

WPX Energy

Oil & Energy

United States, Oklahoma

$250M to $500M

1001-5000

Webco Industries

Oil & Energy

United States, Oklahoma

$250M to $500M

1001-5000

Tucker Energy Services

Oil & Energy

United States, Oklahoma

$250M to $500M

1001-5000

Unit Drilling Company

Oil & Energy

United States, Oklahoma

$250M to $500M

1001-5000

John Zink Hamworthy Combustion

Oil & Energy

United States, Oklahoma

$100M to $250M

1001-5000

Tulsa Inspection Resources

Oil & Energy

United States, Oklahoma

$100M to $250M

1001-5000

Latshaw Drilling

Oil & Energy

United States, Oklahoma

$100M to $250M

1001-5000

Al Khafji Joint Operations

Oil & Energy

United States, Oklahoma

$100M to $250M

1001-5000

Mammoth Energy Services

Oil & Energy

United States, Oklahoma

$50M to $100M

1001-5000

Pipe Liners Club of Tulsa

Oil & Energy

United States, Oklahoma

$5M to $10M

1001-5000

Oklahoma City Firefighters

Oil & Energy

United States, Oklahoma

$5M to $10M

1001-5000