Geologic analysis of the Upper Jurassic Cotton Valley Formation in Jefferson TOC) compared to the productive Haynesville Shale Formation (% TOC). Samples of Jurassic Haynesville Formation mudstone are examined with FIB- SEM and Sorry, there is no online preview for this file type. . properties of pore types and networks from a variety of geologic environments. Hydraulic Fracture Design and Well Production Results in the Eagle Ford Shale: . Modeling: A Worked Example From the Haynesville Shale, De Soto Parish.

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Sandwiched between the also unconventional Cotton Geoloyy, Bossier and Smackover formations, the Haynesville Shale is one of the most notable plays along the U.

Mudrocks range from calcareous-dominated facies near the carbonate platforms and islands to siliceous-dominated lithologies in areas where deltas prograded into the basin and diluted organic matter e. Jurassic basement blocks, Cretaceous thermal uplifts, and Cenozoic flexure.

As a result of rising gas prices and improved technology in hydraulic fracturing and directional drillingit became possible to extract the gas from the Haynesville Shale in an economic and cost-effective manner.

Haynesville Shale – Wikipedia

Views Read Edit View history. By using this site, you agree to the Terms of Use and Privacy Policy. The Haynesville Shale is a lithological heterogeneous, often organic-rich, mudstone. In January the formation produced 6. Organic matter in the form of amorphous kerogen coats the argillaceous material. A Nation’s Hunt for an Energy Future” has been made on the subject of the mineral rights leasing “gold rush” and the potential impact of the Haynesville Shale gas play on national and global energy picture.

Bioturbated calcareous mudstone showing abundant calcitic bioclasts in organic-rich matrix.

Haynesville Shale

It haynesvolle known to contain large quantities of natural gas prior to The mudstone comprising it accumulated as a widespread and laterally continuous blanket across the limits of this restricted geoloogy. Very limited detailed descriptions of the Haynesville Shale indicated that it hajnesville fossiliferous.


Department of Energy, Washington DC. Anderson Controls on reservoir quality and productivity in the Haynesville Shale, northwestern Gulf of Mexico Basin. In many geological reports and journal papers, the Haynesville Shale was classified as part of the Bossier Shale, although they are now classified as separate formations.

They comprise the western boundary of the ancient shelf basin within which Haynesville Shale accumulated. Ternary diagram showing Bossier and Haynesville mineralogical data from x-ray diffraction analyses. For example, the Haynesville Shale has been observed to vary in composition from 25 to 35 percent clay and 5 to 30 percent calcite in samples recovered from one oil and gas well.

Gulf Coast Association of Geological Societies.

Oil and gas is currently produced from shelf-edge carbonate reservoirs which consist of oolite shoals within the Gilmer Limestone and Buckner Anhydrite members. The STARR team focuses on studies of Haynesville and Bossier Shale facies, deposition, geochemistry, petrophysics, production, pore evolution, and stratigraphy in light of paleogeographic setting and regional tectonics using wireline logs, seismic, and cores.

The southern rim of this ancient basin and extent of the Haynesville Shale was an ancient Jurassic island, called “Sabine Island.

Both stratigraphic relationships and a nannofossil coccolith assemblage described from it indicates that it is Kimmeridgianto million years old, in age.

The mudrocks contain a complex mineralogical framework of carbonate, quartz, and clay Fig. The mechanisms by which organic matter accumulated within these sediments consisted of a complex interplay of local carbonate generation, clastic input from outside sources, variable burial rates, and variable bottom water anoxia and euxinia.

Where organic matter is low and silts are rare, the haynesgille microfossil and carbonate mud has recrystallized. However, prior to that time, it was uneconomic to extract the natural gas. Haynesville samples are from Louisiana and East Texas.

Boulder, Colorado Geological Society of America. The composition of these mudstones varies greatly depending on position on geographic location and stratigraphic position.

The Haynesville Shale underlies an area of about 9, square miles and averages about to feet thick. Not long after the land-leasing boom began innew mineral owners across northwest Louisiana and East Texas joined online forums and began sharing information with each other about the process of oil and gas leasing, leasing bonus payments and well production results. The reported fossils include unidentified coccoliths, bivalves, gastropods, and calcispheres. Retrieved from ” https: The Gilmer Limestone and Buckner Anhydrite members represent coastal and shallow marine deposits, which form along the northern boundary of the basin in which the Haynesville Shale fieltype and separate it from contemporaneous undifferentiated haynesvillee deposits that occur beneath Arkansas further north.


It contains vast quantities of recoverable natural gas. The New York Times. In addition, the argillaceous matrix of such mudstones frequently contains numerous foration particles and stringers. Recently, Haynesville production of 5.

From Wikipedia, the free encyclopedia. In these mudstones, the calcite occurs as silt-sized microfossil hash composed of fragmented fossils and carbonate mud. Organic-rich Bossier unlaminated mudstone facies showing fillibranch mollusks and silt-sized siliceous and calcareous grains. In addition to the Haynesville Shale, the Haynesville Formation contains two formal subdivisions, which geologists call members.

In addition, the Gilmer Limestone member also represents a carbonate platform with oolite shoals that lie beneath central Upshur and western Smith counties, Texas. The Upper Jurassic Kimmeridgian to Lower Tithonian Haynesville and Bossier Shales of East Texas and northwest Louisiana are currently one of the most important shale-gas plays in North Ggeology, having high IPs, steep decline rates, EURs estimated at 3 to 7 Bcf formatiom well of each formation, haynesvillr play resources estimated together in the hundreds of trillions of cubic feet Fig.

Hettangian Sinemurian Pliensbachian Toarcian.

The Haynesville Shale came into prominence in as a major producer of shale gas in East Texas and Louisiana. This natural gas is known as ” shale gas ” because the wells produce from low permeability mudstones that are also the source for the natural gas.