6 Petroleum Engineering: Mechanical Properties of Kerogen terms
Anoxia
Noun
It is a total depletion in the level of oxygen.
Example: [1] The type II kerogen macromolecule (chemical formula: C252H294O24N6S3) is representative of the oil-prone organic matter deposited in anoxic marine environments, which is considered as the most common source of conventional hydrocarbon resources.
[1]“Mechanical Properties and Failure Envelope of Kerogen Matrix by Molecular Dynamics Simulations,” The Journal of Physical Chemistry C, 2020. [Online]. Available: https://pubs.acs.org/doi/full/10.1021/acs.jpcc.9b09639#. [Accessed: Nov. 09, 2022]
en: Аноксия (отсутствие кислорода в системе)
Brittleness index
Noun
It is used to quantify brittleness as a characterization of possible failures in rock.
Example: [1] "The brittleness based on Young’s modulus and Poisson’s ratio characterize the original physical properties of reservoirs, while the mineral brittleness considers the mineral volume in the shale and brittle factor of every single mineral..quartz and carbonate minerals tend to promote rick brittleness, the following method is established to express the impact of rock mineral components in brittleness index as shown.."
[1]
A. Othman, G. Glatz, M. S. Aljawad, S. Alafnan, S. A. Alarifi, and M. Al Ramadan, “Review of Kerogen’s Geomechanical Properties: Experiments and Molecular Simulation,” ACS Omega, vol. 7, no. 37, pp. 32829–32839, Sep. 2022, doi: 10.1021/acsomega.2c03136. [Online]. Available: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9494651/#eq2. [Accessed: Nov. 09, 2022]
en: Показатель хрупкости
Discrepancy
Noun
It is an illogical or surprising lack of compatibility or similarity between two or more facts.
Example: [1] However, the details of the morphology of the pore space can explain the discrepancies between the scalings of the model and the data.
[1] “Impact of Nanoporosity on Hydrocarbon Transport in Shales’ Organic Matter,” ACS Publications, 2018. [Online]. Available: https://pubs.acs.org/doi/10.1021/acs.nanolett.7b04079. [Accessed: Nov. 09, 2022]
en: Несоответствие
Dissolution
noun
It is a termination or destruction by breaking down, disrupting, or dispersing
Example: [1] In the reactors for all four shales, there was a drop in total Ca in the
solid material due to calcite dissolution.
[1] A. D. Jew et al., “Impact of Organics and Carbonates on the Oxidation and Precipitation of Iron during Hydraulic Fracturing of Shale,” Energy & Fuels, vol. 31, no. 4, pp. 3643–3658, Mar. 2017, doi: 10.1021/acs.energyfuels.6b03220.
en: Распад/растворение
Kerogen
noun
It is a naturally occurring, solid, insoluble organic matter(OM) that occurs in source rocks and can yield oil upon heating.
Example: [1]In unconventional reservoirs, hydrocarbons are trapped in nanoporous organic matter called kerogen that produces oil and gas during a very slow decomposition process.
[1]“Impact of Nanoporosity on Hydrocarbon Transport in Shales’ Organic Matter,” ACS Publications, 2018. [Online]. Available: https://pubs.acs.org/doi/10.1021/acs.nanolett.7b04079. [Accessed: Nov. 09, 2022]
Thin section
noun
It is a thin slice of a rock or mineral sample, prepared in a laboratory, for use with a polarizing petrographic microscope, electron microscope and electron microprobe. Used in an optical mineralogy and petrography.
Example: [1] Petrographic thin section cut from a large piece of Marcellus shale under plain polarized light; the thin section was cut perpendicular to bedding.
[1] A. D. Jew et al., “Impact of Organics and Carbonates on the Oxidation and Precipitation of Iron during Hydraulic Fracturing of Shale,” Energy & Fuels, vol. 31, no. 4, pp. 3643–3658, Mar. 2017, doi: 10.1021/acs.energyfuels.6b03220.
