Shales Leaching Modelling for Prediction of Flowback Fluid Composition

The object of the paper is the prediction of flowback fluid composition at a laboratory scale, for which a new approach is described. The authors define leaching as a flowback fluid generation related to the shale processing. In the first step shale rock was characterized using X-ray fluorescence sp...

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Main Authors: Andrzej Rogala, Karolina Kucharska, Jan Hupka
Format: Article
Language:English
Published: MDPI AG 2019-04-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/12/7/1404
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author Andrzej Rogala
Karolina Kucharska
Jan Hupka
author_facet Andrzej Rogala
Karolina Kucharska
Jan Hupka
author_sort Andrzej Rogala
collection DOAJ
description The object of the paper is the prediction of flowback fluid composition at a laboratory scale, for which a new approach is described. The authors define leaching as a flowback fluid generation related to the shale processing. In the first step shale rock was characterized using X-ray fluorescence spectroscopy, X-ray diffractometry and laboratory analysis. It was proven that shale rock samples taken from the selected sections of horizontal well are heterogeneous. Therefore, the need to carry a wide range of investigations for highly diversified samples occurred. A series of leaching tests have been conducted. The extracts were analyzed after leaching to determine Total Organic Carbon and selected elements. For the results analysis significant parameters were chosen, and regression equations describing the influence of rocks and fracturing fluid parameters on the flowback fluid composition were proposed. Obtained models are described by high values of determination coefficients with confidence coefficients above 0.99 and a relatively low standard deviation. It was proven that the proposed approach regarding shale leaching can be properly described using shale models at a laboratory scale, however scaling up requires further investigations.
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spelling doaj.art-25d18890d76841b689a120fe4e7b1c372022-12-22T04:01:36ZengMDPI AGEnergies1996-10732019-04-01127140410.3390/en12071404en12071404Shales Leaching Modelling for Prediction of Flowback Fluid CompositionAndrzej Rogala0Karolina Kucharska1Jan Hupka2Department of Process Engineering and Chemical Technology, Faculty of Chemistry, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdansk, PolandDepartment of Process Engineering and Chemical Technology, Faculty of Chemistry, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdansk, PolandDepartment of Process Engineering and Chemical Technology, Faculty of Chemistry, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdansk, PolandThe object of the paper is the prediction of flowback fluid composition at a laboratory scale, for which a new approach is described. The authors define leaching as a flowback fluid generation related to the shale processing. In the first step shale rock was characterized using X-ray fluorescence spectroscopy, X-ray diffractometry and laboratory analysis. It was proven that shale rock samples taken from the selected sections of horizontal well are heterogeneous. Therefore, the need to carry a wide range of investigations for highly diversified samples occurred. A series of leaching tests have been conducted. The extracts were analyzed after leaching to determine Total Organic Carbon and selected elements. For the results analysis significant parameters were chosen, and regression equations describing the influence of rocks and fracturing fluid parameters on the flowback fluid composition were proposed. Obtained models are described by high values of determination coefficients with confidence coefficients above 0.99 and a relatively low standard deviation. It was proven that the proposed approach regarding shale leaching can be properly described using shale models at a laboratory scale, however scaling up requires further investigations.https://www.mdpi.com/1996-1073/12/7/1404fracturing fluidflowback fluidleachingsolid-liquid extraction
spellingShingle Andrzej Rogala
Karolina Kucharska
Jan Hupka
Shales Leaching Modelling for Prediction of Flowback Fluid Composition
Energies
fracturing fluid
flowback fluid
leaching
solid-liquid extraction
title Shales Leaching Modelling for Prediction of Flowback Fluid Composition
title_full Shales Leaching Modelling for Prediction of Flowback Fluid Composition
title_fullStr Shales Leaching Modelling for Prediction of Flowback Fluid Composition
title_full_unstemmed Shales Leaching Modelling for Prediction of Flowback Fluid Composition
title_short Shales Leaching Modelling for Prediction of Flowback Fluid Composition
title_sort shales leaching modelling for prediction of flowback fluid composition
topic fracturing fluid
flowback fluid
leaching
solid-liquid extraction
url https://www.mdpi.com/1996-1073/12/7/1404
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