What is the approximate porosity of the Eagle Ford shale?
5.8. 2 Hydraulic Fracture Design and the Use of Qualitative Data (the Eagle Ford Gas-Shale)
| Parameter | Unit | Range |
|---|---|---|
| Total Organic Carbon | % | 2–9 |
| Porosity | % | 8–18 |
| Water Saturation | % | 7–31 |
| Permeability | nanodarcies | 20–1,200 |
What is Eagle Ford Crude?
The Eagle Ford is a geological formation directly beneath the Austin Chalk. It is considered to be the “source rock”, or the original source of hydrocarbons that are contained in the Austin Chalk above it. The formation is best known for producing variable amounts of dry gas, wet gas, NGLs, condensate and oil.
How deep is the Eagle Ford Shale?
between 4,000 and 12,000 feet
It is Cretaceous in age resting between the Austin Chalk and the Buda Lime at a depth between 4,000 and 12,000 feet. It is the source rock for the Austin Chalk and the giant East Texas Field.
Where is Barnett Shale located?
Fort Worth Basin
1.2 Barnett Shale The Barnett Shale is a set of black carboniferous shales developed in the Fort Worth Basin of Texas in the USA, with an area of distribution of approximately 1.3 × 104 km2. It is the most important hydrocarbon source rock formation in the Fort Worth Basin.
What formation is below the Eagle Ford Shale?
Buda Limestone
The Buda Limestone is a sedimentary rock formation located just one layer below the Eagle Ford. The blanket formation is twice as thick as the Eagle Ford in some areas, and therefore Primera believes it can potentially hold twice the volume of crude oil.
What are the largest oil fields in the world?
The Ghawar oilfield is the largest oil field in the world. It’s located in Saudi Arabia in the Al Hasa Province. At 280 km long and 40 km wide, it covers a massive area of 11,000 square kilometers and is estimated at approximately 100 meters in thickness.
What happened to the Barnett Shale?
After nearly 200 active rigs a decade ago, no one is drilling North Texas’ Barnett Shale. It finally happened. Plummeting oil and gas prices, along with the seductive lure of bigger payouts in other parts of Texas and across the country, have brought exploration in North Texas to a halt.
Where is the Eagle Ford Formation in Texas?
The Eagle Ford formation continues into the southwest part of the East Texas Basin as a combination of the Maness and Eagle Ford Group facies and grades into coarser sandstone units of Woodbine to the east (Hentz and Ruppel, 2011).
How is the elevation of the Eagle Ford determined?
The elevation map for the top of the Eagle Ford formation (Figure 2) was constructed from both subsurface well data (DrillingInfo Inc.) and above ground outcrop elevation data (from the Texas Natural Resources Information System and the U.S. Geological Survey).
What are the regions of the Eagle Ford play?
As shown in Figure 4, the Eagle Ford Play is broken into three regions; Oil, gas-condensate and dry gas from Northwest to Southeast. This implies that not all region of Eagle Ford Play is economic because you might not want to produce dry gas during whole well life. The Eagle Ford Play also contains seven different facies:
What are source rock facies in the Eagle Ford?
Identification of source rock facies within the Eagle Ford is crucial for optimization of zonal selection and completion design, as this formation is an unconventional play. In the Eagle Ford shale play, both structural and stratigraphic traps are found.