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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The Haynesville Shale is an informal, popular name for a Jurassic Period rock formation that underlies large parts of southwestern Arkansasnorthwest Louisiana formtaion, and East Texas.

It contains vast quantities of recoverable natural gas. Cairo field, Union County, Arkansas. Department of Energy, Washington DC. Shaded area represents productive Haynesville gas shale. Bone Spring Play Analysis. 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.

The submarine fan sandstones of the Gray sand in north Louisiana are also significant producers.

Views Geoloty Edit View history. The reported fossils include unidentified coccoliths, bivalves, gastropods, and calcispheres. Aalenian Bajocian Bathonian Callovian. Organic matter in the form of amorphous kerogen coats the argillaceous material.

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. That makes directional drilling and hydraulic fracturing popular avenues for tapping into its gas reserves. The Upper Jurassic Kimmeridgian to Fprmation Tithonian Haynesville and Bossier Shales of East Texas and northwest Fiketype are currently one of the most important hayneaville plays in North America, having high IPs, steep decline rates, EURs estimated at 3 to 7 Bcf per well of each formation, and play resources estimated together in the hundreds of trillions of cubic feet Fig.


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.

Haynesville Shale

This page was last edited on 7 Septemberat The New York Forkation. The shallow coastal waters were bordered further north by an arid coastal plain characterized by extensive sabkhas. The Gilmer Limestone beology Buckner Anhydrite members represent coastal and shallow marine deposits, which form along the northern boundary of the basin in which the Haynesville Shale accumulated and separate it from contemporaneous undifferentiated nonmarine deposits that occur beneath Arkansas further north.

Both the silty, argillaceous mudstones and silty, calcareous mudstones often exhibit sparse to abundant, laminated pelletal fabrics. Recently, Haynesville production of 5.

Very limited detailed descriptions of the Haynesville Shale indicated that it is fossiliferous. 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.

This natural gas is known as ” shale gas geolohy because the wells produce from low permeability mudstones that are also the source for the natural gas. Porosity occurs in nano-pores as interparticle formtaion and within organics. The silt often occurs as laminations within these mudstones.

Haynesville Shale-gas Study | Bureau of Economic Geology

The southern rim of this ancient basin and extent of the Haynesville Shale was an ancient Jurassic island, called “Sabine Island. This ancient island now lies deeply buried giletype the surface of Sabine County, Texas. Anoxic bottom water conditions allowed organic matter falling to the floor of this basin to be preserved geo,ogy incorporated into sediments that became the Haynesville Shale.

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. Inthe Haynesville Shale was thought to be the largest natural gas field in the contiguous 48 states with an estimated trillion cubic feet 7. Organic-rich Bossier unlaminated mudstone facies showing fillibranch mollusks and silt-sized siliceous and calcareous grains. The Haynesville Shale underlies an area of about 9, square miles and averages about to feet thick.


In these mudstones, the calcite occurs as silt-sized microfossil hash composed of fragmented fossils and carbonate mud. They comprise the western boundary of the ancient shelf basin within which Haynesville Shale accumulated.

Haynesville samples are from Louisiana and East Texas. Haynesville and Bossier gas shales are distinctive on wireline logs—high gamma ray, low density, low neutron porosity, high sonic travel time, moderately high resistivity.

In addition, the Gilmer Limestone member also represents a carbonate platform with oolite geooogy that lie beneath central Upshur and western Smith counties, Texas. This sandstone hwynesville regarded as having accumulated as submarine fans carrying sediment from the coastline into the basin within which the Haynesville Shale accumulated.

The Haynesville Formation consists of marine and coastal plain limestone, shale, mudstone, and sandstone. The Haynesville Shale came into prominence in as a major producer of shale gas in East Texas and Louisiana. They vary from calcareous mudstone near the carbonate platforms and islands to argillaceous mudstone in areas where submarine fans prograded into the basin and diluted organic matter.

Haynesville Shale – Wikipedia

Reported prepared under contract no. Sedimentological structures include burrowing, ripples, laminations, and current laminations related to turbidites Fig. The mudrocks contain haynesvil,e complex mineralogical framework of carbonate, quartz, and clay Fig.