| Location |
Maverick Basin of South Texas
|
| Thickness |
500-600 ft |
| Formation Details |
The Pearsall Shale is located about 2500' beneath the Eagle Ford Shale. Composed of interbedded organic shale, silica and limestone, the Pearsall Shale is similar in composition to the Eagle Ford Shale. The Lower Cretaceous Aptian Pearsall Formation occurs in the northern Gulf of Mexico Basin where thermal maturity varies from overmature in the Maverick Basin of south Texas to immature to peak oil window in the north-central and eastern parts of the basin. |
| Notes |
The Pearsall Shale is a gas formation that garnered attention near the Texas-Mexico border in the Maverick Basin before Eagle Ford development kicked off. The Pearsall Shale is found below the Eagle Ford at depths of 7,000-12,000 ft. |
