Unconventional natural gas resources in Pennsylvania: The backstory of the modern Marcellus Shale play

Carter, Kristin M.; Harper, John A.; Schmid, Katherine W.; Kostelnik, Jaime

doi:10.1306/eg.09281111008

Cited by 57 publications

(36 citation statements)

References 41 publications

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“…Two types of shale samples are presented in this paper, a clay-rich Marcellus shale and a carbonate-rich Eagle Ford shale. The Marcellus shale was retrieved from Eastern Gas Shales Project well PA-5 in Lawrence County, PA at a depth of 4130ft (Carter et al 2011), while the Eagle Ford shale was provided from Southwest Texas at a depth of 11000ft. Both samples are horizontal cores, drilled parallel to the bedding planes, and measured having a 25mm diameter and 15mm length prior to mini-coring (to be discussed further in permeability experimental setup).…”

Section: Sample Descriptionmentioning

confidence: 99%

Effects of Hydraulic Fracturing Fluid Chemistry on Shale Matrix Permeability

Alalli¹,

Li²,

Jew³

et al. 2018

Proceedings of the 6th Unconventional Resources Technology Conference

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The URTeC Technical Program Committee accepted this presentation on the basis of information contained in an abstract submitted by the author(s). The contents of this paper have not been reviewed by URTeC and URTeC does not warrant the accuracy, reliability, or timeliness of any information herein. All information is the responsibility of, and, is subject to corrections by the author(s). Any person or entity that relies on any information obtained from this paper does so at their own risk. The information herein does not necessarily reflect any position of URTeC. Any reproduction, distribution, or storage of any part of this paper by anyone other than the author without the written consent of URTeC is prohibited.

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Section: Sample Descriptionmentioning

confidence: 99%

Effects of Hydraulic Fracturing Fluid Chemistry on Shale Matrix Permeability

Alalli¹,

Li²,

Jew³

et al. 2018

Proceedings of the 6th Unconventional Resources Technology Conference

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“…(Ross and Bustin, 2008). Low-yield, vertical shale wells have been produced since the late 1800s, with lifetimes of decades to more than a century as free and desorbed natural gas slowly permeates from matrix pores and sorption sites, flowing through natural and engineered fracture networks to wells (Soeder, 1988;Boswell, 1996;Carter et al, 2011).…”

Section: Geologic Properties and Production Of Shalementioning

confidence: 99%

U.S. DOE NETL methodology for estimating the prospective CO2 storage resource of shales at the national and regional scale

Levine

Fukai

Soeder

et al. 2016

International Journal of Greenhouse Gas Control

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a b s t r a c tWhile the majority of shale formations will serve as reservoir seals for stored anthropogenic carbon dioxide (CO 2 ), hydrocarbon-bearing shale formations may be potential geologic sinks after depletion through primary production. Here we present the United States-Department of Energy-National Energy Technology Laboratory (US-DOE-NETL) methodology for screening-level assessment of prospective CO 2 storage resources in shale using a volumetric equation. Volumetric resource estimates are produced from the bulk volume, porosity, and sorptivity of the shale and storage efficiency factors based on formationscale properties and petrophysical limitations on fluid transport. Prospective shale formations require: (1) prior hydrocarbon production using horizontal drilling and stimulation via staged, high-volume hydraulic fracturing, (2) depths sufficient to maintain CO 2 in a supercritical state, generally >800 m, and (3) an overlying seal. The US-DOE-NETL methodology accounts for storage of CO 2 in shale as a free fluid phase within fractures and matrix pores and as an sorbed phase on organic matter and clays. Uncertainties include but are not limited to poorly-constrained geologic variability in formation thickness, porosity, existing fluid content, organic richness, and mineralogy. Knowledge of how these parameters may be linked to depositional environments, facies, and diagenetic history of the shale will improve the understanding of pore-to-reservoir scale behavior, and provide improved estimates of prospective CO 2 storage.Published by Elsevier Ltd.

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“…In contrast, only two formations generally have been recognized in Pennsylvania, the upper Mahantango Formation and the lower Marcellus Formation. The Hamilton Group in western and north-central and northeastern Pennsylvania has only recently been described in terms of the revised New York succession (Baird et al, 1999;Brett et al, 2011;Carter et al, 2011;Lash and Engelder, 2011), and the reader is referred to these papers for additional information on Hamilton and, especially, Marcellus stratigraphy.…”

Section: Stratigraphy and Structural Geologymentioning

confidence: 99%

A geochemical context for stray gas investigations in the northern Appalachian Basin: Implications of analyses of natural gases from Neogene-through Devonian-age strata

Baldassare¹,

McCaffrey²,

Harper³

2014

Bulletin

Self Cite

119

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A B S T R A C TAs the pace of drilling activity in the Marcellus Formation in the northern Appalachian Basin has increased, so has the number of alleged incidents of stray natural gas migration to shallow aquifer systems. For this study, more than 2300 gas and water samples were analyzed for molecular composition and stable isotope compositions of methane and ethane. The samples are from Neogene-to Middle Devonian-age strata in a five-county study area in northeastern Pennsylvania. Samples were collected from the vertical and lateral sections of 234 gas wells during mud gas logging (MGL) programs and 67 private groundwater-supply wells during baseline groundwaterquality testing programs.Evaluation of this geochemical database reveals that microbial, mixed microbial and thermogenic, and thermogenic gases of different thermal maturities occur in some shallow aquifer systems and throughout the stratigraphy above the Marcellus Formation. The gas occurrences predate Marcellus Formation drilling activity. Isotope data reveal that thermogenic gases are predominant in the regional Neogene and Upper Devonian rocks that comprise the potable aquifer system in the upper 305 m (1000 ft) (average d 13 C 1 = −43.53‰;

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Unconventional natural gas resources in Pennsylvania: The backstory of the modern Marcellus Shale play

Cited by 57 publications

References 41 publications

Effects of Hydraulic Fracturing Fluid Chemistry on Shale Matrix Permeability

Effects of Hydraulic Fracturing Fluid Chemistry on Shale Matrix Permeability

U.S. DOE NETL methodology for estimating the prospective CO2 storage resource of shales at the national and regional scale

A geochemical context for stray gas investigations in the northern Appalachian Basin: Implications of analyses of natural gases from Neogene-through Devonian-age strata

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