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(Unpublished)
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
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| Status: |
Unpublished |
| Creators/Authors: |
| Creators | Email | Pitt Username | ORCID  |
|---|
| Dieterich, Matthew F | Mfd29@pitt.edu | MFD29 | |
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| ETD Committee: |
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| 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: |
19 Jul 2024 18:56 |
| URI: |
http://d-scholarship.pitt.edu/id/eprint/24963 |
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