Evansville's Oil and Gas Heritage
Evansville lies within the Illinois Basin, a geological region spanning Southern Indiana, Southern Illinois, and Western Kentucky that has produced oil and natural gas for more than a century. Small and mid-sized independent producers have long operated wells throughout the area, and Evansville developed into a center for oilfield services, engineering firms, and energy professionals. Today, the region's oil and gas activity includes production, refining, pipeline transportation, and natural gas distribution.
While the energy sector is changing, oil and natural gas continue to play an important role in heating homes, fueling vehicles, powering industry, and producing the raw materials used in plastics and chemicals, an industry that is particularly significant in the Evansville economy.
Segments of the Regional Industry
The local oil and gas industry includes upstream exploration and production, midstream pipelines and storage, and downstream refining and distribution. Utilities also distribute natural gas to residential, commercial, and industrial customers. Each segment supports jobs and contributes to the regional economy.
The Top 10 Oil and Gas Companies Serving Evansville
1. CountryMark
CountryMark is a farmer-owned energy cooperative that operates a refinery in Mount Vernon, Indiana, just west of Evansville. It refines crude oil produced largely in the Illinois Basin into fuels used by farmers, businesses, and consumers across Indiana and neighboring states, making it one of the most important energy companies in the region.
2. CenterPoint Energy
CenterPoint Energy distributes natural gas to homes and businesses throughout Evansville and Southwest Indiana. Its gas operations provide heating and process energy to residential customers and major industrial users, and the company continues to invest in pipeline safety and modernization.
3. Boardwalk Pipelines
Boardwalk Pipelines, through its Texas Gas Transmission system, operates major natural gas pipelines that run through the Ohio Valley. Its significant operations in nearby Owensboro, Kentucky, make it an important midstream employer and infrastructure provider for the region.
4. Marathon Petroleum
Marathon Petroleum operates a refinery in Robinson, Illinois, within the broader Illinois Basin region. Its refining, distribution, and marketing operations help supply fuels to Midwest markets, including the Evansville area.
5. Enbridge
Enbridge operates extensive natural gas transmission infrastructure, including the Texas Eastern system that crosses the Midwest and Ohio Valley. These pipelines are critical to delivering natural gas supplies to utilities and industries across the region.
6. Kinder Morgan
Kinder Morgan is one of North America's largest energy infrastructure companies, with natural gas pipelines and terminals serving the central United States. Its network supports reliable natural gas delivery to Midwestern markets.
7. Citation Oil & Gas
Citation Oil & Gas is an independent producer that has operated mature oil fields in the Illinois Basin. Its focus on enhancing production from established fields reflects the long-term nature of oil production in the region.
8. Pioneer Oil Company
Pioneer Oil Company is an Indiana-based independent oil producer with operations in the Illinois Basin. Independent producers like Pioneer are a cornerstone of the regional industry, maintaining and developing wells across Southern Indiana and Illinois.
9. Atmos Energy
Atmos Energy is one of the largest natural-gas-only distributors in the United States, serving communities in Western Kentucky across the river from Evansville. Its operations support the broader Tri-State energy network.
10. Big Rivers Electric
Although primarily an electric generation and transmission cooperative based in Henderson, Kentucky, Big Rivers Electric has been part of the region's shift toward natural-gas-fired generation. Its decisions influence how natural gas is used to power the Tri-State area.
Industry Trends in the Illinois Basin
Producers are focusing on efficiency, enhanced recovery techniques, and responsible operations in mature fields. Pipeline operators are investing in safety technology and emissions reduction. Utilities are converting coal plants to natural gas and adding renewables, increasing gas demand for power generation. Carbon capture research and hydrogen exploration are also gaining attention across the Midwest.
Economic Impact on Evansville
The oil and gas industry supports engineers, geologists, field technicians, truck drivers, pipeline workers, and refinery employees throughout the region. Related businesses such as equipment suppliers, environmental consultants, and legal and accounting firms also benefit. The availability of natural gas and refined products supports Evansville's large plastics, chemical, and manufacturing sectors.
Safety and Environmental Responsibility
Modern oil and gas companies operate under extensive federal and state regulations. Leading operators invest in leak detection, well integrity, spill prevention, and community engagement. Residents can contact utilities for gas safety information and should always call before digging to avoid damaging underground lines.
Frequently Asked Questions
Is oil still produced around Evansville?
Yes. The Illinois Basin continues to produce oil from thousands of wells across Southern Indiana, Southern Illinois, and Western Kentucky. Most production comes from mature fields operated by independent producers, and much of the crude is refined regionally.
Who do I call if I smell natural gas?
Leave the area immediately without using light switches or phones near the leak, then call your gas utility's emergency line or 911 from a safe location. Never attempt to locate the leak yourself.
Final Thoughts
From the CountryMark refinery and Illinois Basin producers to major pipelines and natural gas utilities, oil and gas remain an integral part of Evansville's economy. These companies help power homes and industry while adapting to an energy future that increasingly balances traditional fuels with cleaner technologies.