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Muncy Trivisonno, Brittany 2.pdf (50.75 MB)

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Developing an Experimental Approach to Understanding Calcite Precipitation Rates in Shale

Trivisonno Muncy, Brittany M
http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1428516738

Abstract Details

2015, Master of Science (MS), Bowling Green State University, Geology.
Hydraulic fracturing of shale is currently a major and rapidly growing area of hydrocarbon production in the United States and around the world. Given their almost total lack of permeability, the transmission of fluids through shale requires the presence of fractures; hence, once the fissures are formed they must remain open. However, the opening of conduits to promote hydrocarbon flow also encourages mineral precipitation along the fracture, ultimately, resulting in its resealing and a reduction in permeability. With calcite as one of the most common vein filling minerals, multiple studies have been done to characterize and classify calcite veins, although none have been done experimentally on natural fractures in an open system. Using a novel flow-through apparatus, aqueous fluids saturated in calcite were passed through vessels containing black shale samples to quantify the rate as which calcite grows. As fluid travels through the apparatus it reaches saturation by passing through a reaction vessel, R0, containing powdered calcite and travel to another reaction vessel, R1, where an increase in temperature drives supersaturation resulting in precipitation. Calcite precipitation is shown here as a result of temperature gradients, time and flow rate. Fluids traveling begin to precipitate calcite where temperatures are the highest, on the downstream end of samples in the R1 vessel. The longer the experiment duration, the more calcite will precipitate. The amount of calcite growth decreases as flow rate increases. Saturation indices must be positive after leaving R0 and reach at least 0.58 while traveling through R1. Morphology changes if saturation index values drop below 0.60 traveling through R1, resulting in dissolution pits on the faces and edges of the calcite crystals.
John Farver (Advisor)
Charlie Onasch (Committee Co-Chair)
Kurt Panter (Committee Member)
192 p.
Geology
Calcite Growth; Vien Formation; Flow through

Recommended Citations

Citations

  • Trivisonno Muncy, B. M. (2015). Developing an Experimental Approach to Understanding Calcite Precipitation Rates in Shale [Master's thesis, Bowling Green State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1428516738

    APA Style (7th edition)

  • Trivisonno Muncy, Brittany. Developing an Experimental Approach to Understanding Calcite Precipitation Rates in Shale . 2015. Bowling Green State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1428516738.

    MLA Style (8th edition)

  • Trivisonno Muncy, Brittany. "Developing an Experimental Approach to Understanding Calcite Precipitation Rates in Shale ." Master's thesis, Bowling Green State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1428516738

    Chicago Manual of Style (17th edition)

bgsu1428516738
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© 2015, all rights reserved.
This open access ETD is published by Bowling Green State University and OhioLINK.