eprintid: 16669
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/66/69
datestamp: 2023-12-19 03:23:11
lastmod: 2023-12-19 03:23:11
status_changed: 2023-12-19 03:06:40
type: article
metadata_visibility: show
creators_name: Iferobia, C.C.
creators_name: Ahmad, M.
creators_name: Ali, I.
title: Experimental Investigation of Shale Tensile Failure under Thermally Conditioned Linear Fracturing Fluid (LFF) System and Reservoir Temperature Controlled Conditions
ispublished: pub
keywords: Failure (mechanical); Fracturing fluids; Risk management; Surface defects; Temperature control; Tensile testing, Controlled conditions; Crack length; Failure patterns; Linear fracturing fluid; Reservoir temperatures; Shale gas reservoirs; Strength increase; Surface crack length; Surface cracks; Temperature conditions, Tensile strength
note: cited By 2
abstract: Linear fracturing fluid (LFF) provides viscosity driven benefits of proppant suspensibility and fluid loss control, and with the use of a breaker agent, flowback recovery can be greatly enhanced. Shale tensile strength is critical in the prediction of fracture initiation and propagation, but its behavior under the interaction with LFF at reservoir temperature conditions remains poorly understood. This necessitated an in-depth investigation into the tensile strengths of Eagle Ford and Wolfcamp shales under thermally conditioned LFF and reservoir temperature controlled conditions. Brazilian Indirect Tensile Strength (BITS) testing was carried out for the quantitative evaluation of shale tensile strength, followed by extensive failure pattern classifications and surface crack length analysis. The thermally conditioned LFF saturation of shale samples led to average tensile strength (ATS) increases ranging from 26.33�51.33 for Wolfcamp. Then, for the Eagle Ford samples, ATS increases of 3.94 and 6.79 and decreases of 3.13 and 15.35 were recorded. The exposure of the samples to the temperature condition of 90 °C resulted in ATS increases of 24.46 and 33.78 for Eagle Ford and Wolfcamp shales, respectively. Then, for samples exposed to 220 °C, ATS decreases of 6.11 and 5.32 were respectively recorded for Eagle Ford and Wolfcamp shales. The experimental results of this research will facilitate models� development towards tensile strength predictions and failure pattern analysis and quantifications in the LFF driven hydraulic fracturing of shale gas reservoirs. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
date: 2022
publisher: MDPI
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85132563806&doi=10.3390%2fpolym14122417&partnerID=40&md5=924597e22e639055905354d99ad8f568
id_number: 10.3390/polym14122417
full_text_status: none
publication: Polymers
volume: 14
number: 12
refereed: TRUE
issn: 20734360
citation:   Iferobia, C.C. and Ahmad, M. and Ali, I.  (2022) Experimental Investigation of Shale Tensile Failure under Thermally Conditioned Linear Fracturing Fluid (LFF) System and Reservoir Temperature Controlled Conditions.  Polymers, 14 (12).   ISSN 20734360