Cargando…

Impacts of Proppant Flowback on Fracture Conductivity in Different Fracturing Fluids and Flowback Conditions

[Image: see text] Multistage hydraulic fracturing is used in horizontal wells to increase the production of tight oil. Fracturing fluids are used in hydraulic fracturing to ensure proppants are suspended, but fluid residuals can cause formation damage and reduce rock permeability; meanwhile, fractur...

Descripción completa

Detalles Bibliográficos
Autores principales: Guo, Shenghao, Wang, Bin, Li, Ya, Hao, Hongyong, Zhang, Mengchuan, Liang, Tianbo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2022
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8892636/
https://www.ncbi.nlm.nih.gov/pubmed/35252663
http://dx.doi.org/10.1021/acsomega.1c06151
_version_ 1784662217256337408
author Guo, Shenghao
Wang, Bin
Li, Ya
Hao, Hongyong
Zhang, Mengchuan
Liang, Tianbo
author_facet Guo, Shenghao
Wang, Bin
Li, Ya
Hao, Hongyong
Zhang, Mengchuan
Liang, Tianbo
author_sort Guo, Shenghao
collection PubMed
description [Image: see text] Multistage hydraulic fracturing is used in horizontal wells to increase the production of tight oil. Fracturing fluids are used in hydraulic fracturing to ensure proppants are suspended, but fluid residuals can cause formation damage and reduce rock permeability; meanwhile, fracture conductivity can be further reduced due to the flowback of proppants during the early stage of production. In this study, steel plates and hydraulically fractured reservoir rocks are tested in a modified API cell to understand the impacts of flowback rate, fracturing fluid, and closure stress on proppant flowback and fracture conductivity. When the closure stress increased from 21 to 30 MPa, retained permeability decreased by slickwater from 35.71 to 29.84% in steel plates; during the flowback, more than 47% of proppants flowed back, and the fracture conductivity increased by 10 times under 21 MPa, which shows the limitation of the API method on the study of proppant flowback. When shale plates are used, the critical flow rate that prevents the proppant flowback was found to be 5.5 × 10(–4)–1.6 × 10(–3) m/s for the 30/50 mesh sands (around 55–340 m(3)/d for a typical horizontal well), and the retained permeability decreased from 23.33 to 22.86% due to an increase of closure stress from 21 to 30 MPa. Results of this study can guide the optimizing of the flowback scheme in the field that minimizes the proppant flowback in different fracturing fluids.
format Online
Article
Text
id pubmed-8892636
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher American Chemical Society
record_format MEDLINE/PubMed
spelling pubmed-88926362022-03-03 Impacts of Proppant Flowback on Fracture Conductivity in Different Fracturing Fluids and Flowback Conditions Guo, Shenghao Wang, Bin Li, Ya Hao, Hongyong Zhang, Mengchuan Liang, Tianbo ACS Omega [Image: see text] Multistage hydraulic fracturing is used in horizontal wells to increase the production of tight oil. Fracturing fluids are used in hydraulic fracturing to ensure proppants are suspended, but fluid residuals can cause formation damage and reduce rock permeability; meanwhile, fracture conductivity can be further reduced due to the flowback of proppants during the early stage of production. In this study, steel plates and hydraulically fractured reservoir rocks are tested in a modified API cell to understand the impacts of flowback rate, fracturing fluid, and closure stress on proppant flowback and fracture conductivity. When the closure stress increased from 21 to 30 MPa, retained permeability decreased by slickwater from 35.71 to 29.84% in steel plates; during the flowback, more than 47% of proppants flowed back, and the fracture conductivity increased by 10 times under 21 MPa, which shows the limitation of the API method on the study of proppant flowback. When shale plates are used, the critical flow rate that prevents the proppant flowback was found to be 5.5 × 10(–4)–1.6 × 10(–3) m/s for the 30/50 mesh sands (around 55–340 m(3)/d for a typical horizontal well), and the retained permeability decreased from 23.33 to 22.86% due to an increase of closure stress from 21 to 30 MPa. Results of this study can guide the optimizing of the flowback scheme in the field that minimizes the proppant flowback in different fracturing fluids. American Chemical Society 2022-02-15 /pmc/articles/PMC8892636/ /pubmed/35252663 http://dx.doi.org/10.1021/acsomega.1c06151 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Guo, Shenghao
Wang, Bin
Li, Ya
Hao, Hongyong
Zhang, Mengchuan
Liang, Tianbo
Impacts of Proppant Flowback on Fracture Conductivity in Different Fracturing Fluids and Flowback Conditions
title Impacts of Proppant Flowback on Fracture Conductivity in Different Fracturing Fluids and Flowback Conditions
title_full Impacts of Proppant Flowback on Fracture Conductivity in Different Fracturing Fluids and Flowback Conditions
title_fullStr Impacts of Proppant Flowback on Fracture Conductivity in Different Fracturing Fluids and Flowback Conditions
title_full_unstemmed Impacts of Proppant Flowback on Fracture Conductivity in Different Fracturing Fluids and Flowback Conditions
title_short Impacts of Proppant Flowback on Fracture Conductivity in Different Fracturing Fluids and Flowback Conditions
title_sort impacts of proppant flowback on fracture conductivity in different fracturing fluids and flowback conditions
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8892636/
https://www.ncbi.nlm.nih.gov/pubmed/35252663
http://dx.doi.org/10.1021/acsomega.1c06151
work_keys_str_mv AT guoshenghao impactsofproppantflowbackonfractureconductivityindifferentfracturingfluidsandflowbackconditions
AT wangbin impactsofproppantflowbackonfractureconductivityindifferentfracturingfluidsandflowbackconditions
AT liya impactsofproppantflowbackonfractureconductivityindifferentfracturingfluidsandflowbackconditions
AT haohongyong impactsofproppantflowbackonfractureconductivityindifferentfracturingfluidsandflowbackconditions
AT zhangmengchuan impactsofproppantflowbackonfractureconductivityindifferentfracturingfluidsandflowbackconditions
AT liangtianbo impactsofproppantflowbackonfractureconductivityindifferentfracturingfluidsandflowbackconditions