Stress distribution around kerogen particles as a measure of the initiation of bitumen-filled microfractures in organic-rich source rocks

Akbar N. Wicaksono; Israa S. Abu-Mahfouz; Erdem Idiz; Joe Cartwright; J. Carlos Santamarina; Volker C. Vahrenkamp

doi:10.1016/j.mex.2022.101817

Stress distribution around kerogen particles as a measure of the initiation of bitumen-filled microfractures in organic-rich source rocks

Akbar N. Wicaksono, Israa S. Abu-Mahfouz^*, Erdem Idiz, Joe Cartwright, J. Carlos Santamarina, Volker C. Vahrenkamp

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

In this article, we present a method used to model the initiation of bitumen-filled microfractures in immature, organic-rich source rocks. The first part presents the method used to calculate the stress distribution around the kerogen particles. The second part explains the method used to calculate the pressure change as a function of the transformation ratio and the resulting overpressure. • The effective principal stresses acting on the kerogen boundary were calculated. • Kerogen geometries were determined using the measured aspect ratio of the kerogen traces obtained from the petrography observation. • To estimate overpressure, the increase in pressure due to the transformation of kerogen to bitumen was calculated.

Original language	English (US)
Article number	101817
Journal	MethodsX
Volume	9
DOIs	https://doi.org/10.1016/j.mex.2022.101817
State	Published - Jan 2022

Keywords

Bitumen-filled microfractures
Kerogen shape
Modeling the initiation of bitumen-filled microfractures from the original kerogen shape
Overpressure
Source rocks
Stress distribution

ASJC Scopus subject areas

Clinical Biochemistry
Medical Laboratory Technology

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10.1016/j.mex.2022.101817

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title = "Stress distribution around kerogen particles as a measure of the initiation of bitumen-filled microfractures in organic-rich source rocks",

abstract = "In this article, we present a method used to model the initiation of bitumen-filled microfractures in immature, organic-rich source rocks. The first part presents the method used to calculate the stress distribution around the kerogen particles. The second part explains the method used to calculate the pressure change as a function of the transformation ratio and the resulting overpressure. • The effective principal stresses acting on the kerogen boundary were calculated. • Kerogen geometries were determined using the measured aspect ratio of the kerogen traces obtained from the petrography observation. • To estimate overpressure, the increase in pressure due to the transformation of kerogen to bitumen was calculated.",

keywords = "Bitumen-filled microfractures, Kerogen shape, Modeling the initiation of bitumen-filled microfractures from the original kerogen shape, Overpressure, Source rocks, Stress distribution",

author = "Wicaksono, {Akbar N.} and Abu-Mahfouz, {Israa S.} and Erdem Idiz and Joe Cartwright and Santamarina, {J. Carlos} and Vahrenkamp, {Volker C.}",

note = "Funding Information: This research was funded by the King Abdullah University of Science and Technology (KAUST) Endowment, faculty baseline funding (V. Vahrenkamp). The authors thank the Ministry of Energy and Mineral Resources (Jordan) for providing core samples from the cores drilled by Shell (represented by the Jordan Oil Shale Company (JOSCO)) in Jordan. We also thank Sander van den Boorn and John Stainforth for productive discussions. Publisher Copyright: {\textcopyright} 2022 The Authors",

year = "2022",

month = jan,

doi = "10.1016/j.mex.2022.101817",

language = "English (US)",

volume = "9",

journal = "MethodsX",

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AU - Wicaksono, Akbar N.

AU - Abu-Mahfouz, Israa S.

AU - Idiz, Erdem

AU - Cartwright, Joe

AU - Santamarina, J. Carlos

AU - Vahrenkamp, Volker C.

N1 - Funding Information: This research was funded by the King Abdullah University of Science and Technology (KAUST) Endowment, faculty baseline funding (V. Vahrenkamp). The authors thank the Ministry of Energy and Mineral Resources (Jordan) for providing core samples from the cores drilled by Shell (represented by the Jordan Oil Shale Company (JOSCO)) in Jordan. We also thank Sander van den Boorn and John Stainforth for productive discussions. Publisher Copyright: © 2022 The Authors

PY - 2022/1

Y1 - 2022/1

N2 - In this article, we present a method used to model the initiation of bitumen-filled microfractures in immature, organic-rich source rocks. The first part presents the method used to calculate the stress distribution around the kerogen particles. The second part explains the method used to calculate the pressure change as a function of the transformation ratio and the resulting overpressure. • The effective principal stresses acting on the kerogen boundary were calculated. • Kerogen geometries were determined using the measured aspect ratio of the kerogen traces obtained from the petrography observation. • To estimate overpressure, the increase in pressure due to the transformation of kerogen to bitumen was calculated.

AB - In this article, we present a method used to model the initiation of bitumen-filled microfractures in immature, organic-rich source rocks. The first part presents the method used to calculate the stress distribution around the kerogen particles. The second part explains the method used to calculate the pressure change as a function of the transformation ratio and the resulting overpressure. • The effective principal stresses acting on the kerogen boundary were calculated. • Kerogen geometries were determined using the measured aspect ratio of the kerogen traces obtained from the petrography observation. • To estimate overpressure, the increase in pressure due to the transformation of kerogen to bitumen was calculated.

KW - Bitumen-filled microfractures

KW - Kerogen shape

KW - Modeling the initiation of bitumen-filled microfractures from the original kerogen shape

KW - Overpressure

KW - Source rocks

KW - Stress distribution

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JF - MethodsX

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Stress distribution around kerogen particles as a measure of the initiation of bitumen-filled microfractures in organic-rich source rocks

Abstract

Keywords

ASJC Scopus subject areas

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