Oil Investment in Illinois

Similar oil investments in this region have been associated with wells similar to a 5,500 feet well through the following formations, some of which are commercially viable, though others were not. Disclosure of which formations were commercially viable is not available at this time.

Oil- and Natural gas-bearing formations in this area include:

  • Tar Springs oil formation – 2354 ft
  • Hardinsburg -  2456 ft
  • Cypress oil formation -  2741 ft
  • Renault -  2934 ft
  • Aux Vases – 3147 ft
  • Ohara -  3113 ft
  • McClosky oil formation – 3309 ft
  • St Louis – 3375 ft
  • Fort Payne – 4555 ft
  • Hannibal shale – 4807 ft
  • Grassy Creek oil formation – 4954 ft
  • Sweetland Creek formation – 5010 ft
  • Blocher -  5099 ft
  • Lingle – 5056 ft
  • Grand Tower Shale – 5292 ft
  • Clear Creek -  5268 ft
  • Backbone – 5520 ft

Some background context on the following formations may provide a useful insight into their analyses:

-The Illinois Basin covers Illinois, Western Kentucky and Western Indiana.

- The Tarsprings Sandstone generally overlies the Glen Dean Limestone. It tends to pinch out to the eastward part of the state, however, and is not known as a continuous formation. As an oil and gas formation, the Tarsprings has been known to have favorable permeability and porosity in some parts of the Southern Illinois, but it has also been known to be very patchy or even absent in many areas. The Tarsprings formation is part of the Upper Chester Group of the Chester Series of the Mississippian system.

- Cypress Sandstone oil and gas formations are classified as the Middle Chester Group of the Chester Series of the Mississippian System. This formation often overlies a limestone cap structure, causing the prehistoric lifeforms to turn into valuable hydrocarbons, such as oil and natural gas. These formations are often part of large anticlinal hydrocarbon structures. The Golconda limestone often overlies the Cypress Sandstone.

- McClosky crude oil bearing formation is part of the lower chester group of the Chester serries of the Mississippian System.

- The Hannibal Shale formation is part of the Mississippian System of Southern Illinois. This shale is a non-fossiliferous formation and has also been referred to as Springville Shale and Hannibal Shale formations of the Kinderhook Age as they have similar fossilized remains and lithology.

- For the Grassy Creek formation, the primary rock type is of a limestone nature, while the secondary rock type is sandstone. However, it is also found as a shale or chert. Thought to be of the Phanerzozoic, Paleozoic, and Devonian-Early, Devonian-Middle, and Devonian-Late geological age.

-The Sweetland Creek formation is thought to be part of the Middle Devonian Strata of the Devonian Series. It has been thought of as a major source rock for the Illinois Basin.

- Grande Tower Limestone formations are a pure carbonate and found throughout the Illinois Basin. These formations require large fracs to release any potential hydrocarbons. The Blocher formation is part of the Phanerzozoic, Paleozoic, and Devonian-Early, Devonian-Middle, and Devonian-Late geological ages.

* The photos above do not represent any specific locations, projects, or company and are shown for visual purposes only. This is not a project for sale or a solicitation to purchase any oil wells for sale or natural gas wells for sale. This is not a presentation or offer to sell securities or to sell any other Oil investment or investments pertaining to Natural gas wells or services. This post is only for informational purposes to aid individuals who wish to develop oil and gas assets in the southern part of this state.

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