I have 35 years of experience, and specialize in the field of petroleum engineering with specific knowledge in the areas of deep well injection and disposal, slurry fracture injection and carbon dioxide injection for enhanced oil recovery and geologic sequestration. I have published on such topics as injection well design and operations, hydraulic fracturing and carbon dioxide, enhanced oil recovery and carbon dioxide geologic sequestration well design and long-term storage. I have testified on injection wells and impacts on drinking waters. I have a unique blend of education and expertise in combining oil and gas operations with in-depth knowledge of regulatory compliance, protection of human health and safety and drinking water resources and the environment. My experience covers both onshore and offshore in the United States and the Middle East.