Download or read book Quantative Petrophysical Characterization of the Barnett Shale in Newark East Field Fort Worth Basin written by Roderick Perez and published by . This book was released on 2009 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Petrographic Characterization of the Barnett Shale Fort Worth Basin Texas written by Petros Konstantinos Papazis and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shale sedimentology is one of the less explored areas of sedimentary geology. Shales account for two-thirds of the sedimentary rock record and preserve large portions of Earth's history in relatively continuous successions. In addition, these rocks serve as key element of basin-scale fluid flow systems and are the primary source of materials released from water-rock interactions at depth. The Mississippian Barnett Shale of north-central Texas is of particular interest because it serves as both source rock and hydrocarbon reservoir for the Newark East Field, the largest gas field in Texas (Montgomery et al., 2005), and the target of intense current exploration interest. This study explores the petrographic characterization of the Barnett Shale by identifying the different silt-, sand-, and granule-size grain types; quantifying percentages and ratios of clay-size to silt-, sand-, and granule-size grain fractions; and determining the nature of the clay-size constituents. Samples used in this study come from four cores in Cooke, Erath, and Wise counties in north-central Texas, and from outcrop in Lampasas and San Saba counties in central Texas. An integrated approach utilizing transmitted polarized light microscopy, secondary and back-scattered electron imaging, cathodoluminescence imaging, X-ray mapping, and X-ray diffraction is applied to 76 polished thin sections. Five major lithologic groups are identified from core observations: 1) black shale relatively lacking in silt-size particles; 2) calcite-rich lithologies; 3) silt-rich black shale; 4) coarse grain accumulations that include calcite-rich and phosphate-rich varieties; and 5) concretions. Grain types for each lithology are classified based on their provenance, as either extrabasinal or intrabasinal particles. Extrabasinal particles include plant fragments and detrital silt-size quartz, feldspar, and mica. Intrabasinal particles are subdivided into calcareous and non-calcareous fossils, coated grains, and phosphatic intraclasts. Authigenic phases identified include Ca-phosphate, calcite, dolomite, ankerite, pyrite, quartz, albite (?), chlorite, barite, sphalerite, P-rich moganite, and titanium-oxide. The results of this study reveal that clay minerals are not the dominant components in these rocks, which are dominated instead by silt- and clay-size quartz, and locally, by biogenic debris and phosphatic intraclasts. This research demonstrates that the Barnett contains rich variety of lithologies that denote important environmental variations. Ultimately, documentation of the spatial distribution of these lithologic types can contribute to regional environmental/stratigraphic model that can then be further linked to mechanical properties within this important economic unit. An understanding of rock properties in the Barnett has wide-ranging implications because this little-understood rock type forms fractured-shale gas systems worldwide

Download or read book An Investigation of Water Production in the Barnett Shale Fort Worth Basin Using Multivariate Statistics and Integrated Reservoir Characterization Techniques written by Jared Saucedo and published by . This book was released on 2020 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Barnett Shale, Fort Worth Basin, remains one of the largest shale plays in the world. Whereas gas production in most of the play is considered economical, a limiting factor is the tendency of wells to produce large volumes of water, particularly outside the Newark East Field, in the expansion area. This thesis investigates water production trends in the expansion area, using production and well data from 3,720 wells, by testing the hypothesis that faults and karst features (collapse chimneys) act as water conduits when fracked into, causing communication between the Ellenburger and Barnett and increased water production. To rule out an explanation of water production trends in terms of completion parameters, well architecture and fracability, these variables were correlated with water production using univariate and multivariate regression analyses. The only statistically significant relationship was between injected water and returned water, yielding an R2 = 98%. Next, using seismic data to model faults and chimneys, water production was compared in wells that were drilled into either feature with the nearest neighboring wells that were not. This was accomplished by integrating seismic and well log data to display wellbores in a 3D interpretation space so that horizontal wellbores intersecting (and thus fracking) into faults or chimneys could be determined. The results of comparing water production in wells that penetrate a fault or chimney showed that, on average, wells that penetrate a fault or chimney produce insignificantly more water than the nearest neighboring wells that do not. Thus, this study found the hypothesis that faults and chimneys act as water conduits when fracked into, resulting in higher water production, to be false.

Download or read book Barnett Shale written by Scott L. Montgomery and published by . This book was released on 2004 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Shale Reservoirs written by John Breyer and published by AAPG. This book was released on 2012-08-20 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hardcover plus CD

Download or read book Well Log and Core derived Reservoir Properties of Barnett Shale of Fort Worth Basin written by Melanie Ybarra and published by . This book was released on 2015 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wireline tools and log analysis methods were not designed for unconventional reservoirs. As a result, hydrocarbon assessment for shale source rock plays have significant uncertainties. This study focuses on petrophysical interpretation uncertainty from a single historic Barnett Shale well TP Sims #2 of Wise County, TX. The Barnett Shale is one of the major source rock plays in the United States. The large body of research and information from the well-drilled Barnett Shale provides a good opportunity to understand and adjust OGIP modeling approaches from volumetric analysis to well performance data. Several factors unique to shale source rocks such as TOC and pyrite have been incorporated into wireline log interpretation using core-derived correlations. Key petrophysical parameters that are estimated from well logs calibrated to core data include: mineral volumes, porosity, net pay, and water saturation. Volumetric OGIP calculations from a range of well log analysis results that have been calibrated to core for TP Sims #2 are compared with EUR data. The resulting recovery factors are larger than expected which may mean that volumetric OGIP remains deficient for resource assessment of shale plays.

Download or read book Geochemical Controls on Production in the Barnett Shale Fort Worth Basin written by Jana L. Klentzman and published by . This book was released on 2009 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Newark East field (Barnett Shale) in the Fort Worth Basin, Texas currently has the largest daily production of any gas field in Texas. Major controls on production in the basin include: the quantity and character of organic matter, the thermal maturity history, and the mineralogy of the Barnett Shale. This study uses Rock Eval to investigate the quantity and character of the organic matter and general thermal maturity, vitrinite reflectance, [delta]13C of produced methane and methane abundance to evaluate thermal maturity in more detail, and x-ray diffraction (XRD) to determine mineralogy. Based on these analyses, it is apparent that the best production from the Barnett Shale is typically found in maturation areas from 1.65 to 2.10%Ro with high organic carbon content, high quartz content, low calcite content and low dolomite content.

Download or read book Petrophysical Characterization of Barnett Shale Play written by Sagar Vivek Kale and published by . This book was released on 2009 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geochemical Characterization of Gases from the Barnett Shale Fort Worth Basin Texas written by Norelis Del Valle Rodriguez Maiz and published by . This book was released on 2007 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Petrographic Analysis of the Barnett Shale in the Fort Worth Basin written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Five facies are present in the Barnett Shale (Mississippian) in a core taken in the southern part of the Fort Worth basin. Facies A is a laminated, silty claystone to siltstone with glauconite grains and sand-sized shale rip-up clasts. It is found only at the top of the core and comprises just 7% of the cored interval. The facies is characterized by fine horizontal laminae undisrupted by bioturbation. Facies B consists of light-colored, limey layers that react vigorously with dilute HCl. The layers occur as thin interbeds in facies E throughout the core. Facies B comprises 4% of the cored interval. The contacts with the overlying and underlying dark, argillaceous claystones of facies E are flat and sharp. Calcite-rich concretions comprise facies C. Laminae in the surrounding claystones are bent around the concretions indicating that the concretions formed at an early stage of burial, before the claystones were completely compacted. Facies C comprises 2% of the core. Facies D is characterized by abundant, large, broken shell fragments. The layers containing the shells are interbedded with dark gray to black claystones of facies E. The shell layers make up only 1% of the cored interval. Facies E makes up the vast majority of the Barnett Shale86% of the total core. It is a dark-colored, fine-grained rock. The color ranges from dark gray to black. The rock consists predominantly of clay-sized particles, but contains varying amounts silt-sized, and even sand-sized material. These coarser grains include calcareous and siliceous bioclasts, shale rip-up clasts, phosphatic material and quartz grains.

Download or read book Characterization of the Mississippian Barnett Shale Formation Well Using Organic Geochemistry Parameters and Their Relationship with Different Lithofacies Fort Worth Basin Texas written by Guillermo Antonio Lo Mónaco Carías and published by . This book was released on 2012 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Production Characteristics and Resource Assessment of the Barnett Shale Continuous unconventional Gas Accumulation Fort Worth Basin Texas written by and published by . This book was released on 1996 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Production characteristics and resource assessment of the Barnett Shale continuous unconventional gas accumulation Fort Worth Basin Texas written by J. W. Schmoker and published by . This book was released on 1996 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Investigation of Regional Variations of Barnett Shale Reservoir Properties and Resulting Variability of Hydrocarbon Composition and Well Performance written by Yao Tian and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In 2007, the Barnett Shale in the Fort Worth basin of Texas produced 1.1 trillion cubic feet (Tcf) gas and ranked second in U.S gas production. Despite its importance, controls on Barnett Shale gas well performance are poorly understood. Regional and vertical variations of reservoir properties and their effects on well performances have not been assessed. Therefore, we conducted a study of Barnett Shale stratigraphy, petrophysics, and production, and we integrated these results to clarify the controls on well performance. Barnett Shale ranges from 50 to 1,100 ft thick; we divided the formation into 4 reservoir units that are significant to engineering decisions. All but Reservoir Unit 1 (the lower reservoir unit) are commonly perforated in gas wells. Reservoir Unit 1 appears to be clay-rich shale and ranges from 10 to 80 ft thick. Reservoir Unit 2 is laminated, siliceous mudstone and marly carbonate zone, 20 to 300 ft thick. Reservoir Unit 3 is composed of multiple, stacked, thin (~15-30 ft thick), upward coarsening sequences of brittle carbonate and siliceous units interbedded with ductile shales; thickness ranges from 0 to 500 ft. Reservoir Unit 4, the upper Barnett Shale is composed dominantly of shale interbedded with upward coarsening, laterally persistent, brittle/ductile sequences ranging from 0 to 100 ft thick. Gas production rates vary directly with Barnett Shale thermal maturity and structural setting. For the following five production regions that encompass most of the producing wells, Peak Monthly gas production from horizontal wells decreases as follows: Tier 1 (median production 60 MMcf) to Core Area to Parker County to Tier 2 West to Oil Zone-Montague County (median production 10 MMcf). The Peak Monthly oil production from horizontal wells is in the inverse order of gas production; median Peak Monthly oil production is 3,000 bbl in the Oil Zone-Montague County and zero in Tier 1. Generally, horizontal wells produce approximately twice as much oil and gas as vertical wells. This research clarifies regional variations of reservoir and geologic properties of the Barnett Shale. Result of these studies should assist operators with optimization of development strategies and gas recovery from the Barnett Shale.

Download or read book Geological petrophysical and engineering analysis of the Barnett Shale Mitchell Energy Corporation T P Sims No 2 Wise County Texas written by Gas Research Institute and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective of the work performed by CER on this co-op well were to acquire and analyze data to determine the hydraulic fracture azimuth and reservoir characteristics of the Clinton Sandstone at this particular well location in eastern Ohio. The results of this analysis would be integral to evaluation of the Clinton Sandstone as a viable horizontal drilling candidate formation.

Download or read book Barnett Shale gas Play of the Fort Worth Basin written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Barnett Shale gas Play of the Fort Worth Basin written by and published by . This book was released on 2007 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: