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PHYSICOCHEMICAL EFFECTS OF SYNTHETIC HYDRAULIC FRACTURING FLUID ON CORE SAMPLES OF THE MIDDLE DEVONIAN MARCELLUS SHALE AND UNDERLYING HUNTERSVILLE CHERT, GREENE COUNTY, PENNSYLVANIA, USA

Dieterich, Matthew/F (2015) PHYSICOCHEMICAL EFFECTS OF SYNTHETIC HYDRAULIC FRACTURING FLUID ON CORE SAMPLES OF THE MIDDLE DEVONIAN MARCELLUS SHALE AND UNDERLYING HUNTERSVILLE CHERT, GREENE COUNTY, PENNSYLVANIA, USA. Master's Thesis, University of Pittsburgh. (Unpublished)

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Abstract

Hydraulic fracturing from directional drilling involves the injection of large quantities of fluid into the target formation, and creates a significant volume of rock with a high surface area in contact with injection fluid and associated brines. Over time, fluid-rock interactions between the saline injection fluids, formation waters released by fracturing, and the fractured rock results in physical and chemical alteration that can lead to changes in rock strength and fracture connectivity. Factors affecting alteration processes include temperature, rock mineralogy, and the composition and ionic strength of the fluids. Experiments conducted at surface (23°C) and borehole temperatures (70°C) assessed the effect of high ionic strength fluids on the mineralogical, textural and chemical characteristics of high surface area core samples of organic rich Marcellus Shale and underlying Huntersville Chert. Comparison of pre- and post-experiment fluid composition and rock mineralogy, surface area, and textures indicate that some reactions were temperature- and/or lithology-dependent. The results also suggest that fluid-rock interaction, including cation exchange reactions, sorption, mineral alteration, and dissolution and mobilization of some trace metals (e.g., nickel, boron, manganese and lithium) can be observed over short (days) time scales.


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Details

Item Type: University of Pittsburgh ETD
Status: Unpublished
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Dieterich, Matthew/FMfd29@pitt.eduMFD29
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairCapo, Rosemaryrcapo@pitt.eduRCAPO
Committee MemberStewart, Brianbstewart@pitt.eduBSTEWART
Committee MemberMcQuarrie, Nadinenmcq@pitt.eduNMCQ
Date: 8 June 2015
Date Type: Publication
Defense Date: 14 April 2015
Approval Date: 8 June 2015
Submission Date: 17 April 2015
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Number of Pages: 49
Institution: University of Pittsburgh
Schools and Programs: Dietrich School of Arts and Sciences > Geology and Planetary Science
Degree: MS - Master of Science
Thesis Type: Master's Thesis
Refereed: Yes
Uncontrolled Keywords: Marcellus Shale, Huntersville Chert, fluid-rock interaction
Date Deposited: 08 Jun 2015 12:57
Last Modified: 15 Nov 2016 14:27
URI: http://d-scholarship.pitt.edu/id/eprint/24963

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