About 85-percent of the company's production comes from offshore, and a large portion of that comes from deepwater developments. The company says it has worked on projects in the Gulf as deep as 7000 feet since 1996. With 300 employees, Mariner's most recent quarterly net income was$1.7 million. In April, Houston-based Apache agreed to acquire Mariner for $2.7 billion. That deal is set to close in the third quarter.