The dynamic elastic and mineralogical Brittleness of Woodford shale of the Anadarko Basin: Ultrasonic P-wave and S-wave velocities, XRD-Mineralogy and predictive models

Raef, Abdelmoneam; Kamari, Arash; Totten, Matthew W.; Harris, Dustin Matthew; Janssen, Kale; Lambert, Michael W.

doi:10.1016/j.petrol.2018.05.052

Cited by 15 publications

(8 citation statements)

References 20 publications

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“…The minerals are accompanied by minor proportions of siderite and pyrite. It should be noted that for the silicate minerals, the quartz content is the highest with an average of 39.7%, leading to an increase in the brittleness index, which is conducive to later fracturing and exploiting. − …”

Section: Resultsmentioning

confidence: 99%

Geochemical Evaluation of the Hydrocarbon Potential of Shale Oil and Its Correlation with Different Minerals–a Case Study of the TYP Shale in the Songliao Basin, China

Hou

Han

et al. 2020

Energy Fuels

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Based on routine Rock-Eval experiments conducted on the source rock and dichloromethane-extracted portions of the same samples, total oil yield was calculated and compared with those obtained from the classic calculation equations. For shale in the early maturity and oil window, there is a large quantity of heavy constituents in the adsorbed state due to the carry-over and confinement effect, which leads to a lower calculated total oil yield. Therefore, S 1e should be counted in the total oil yield when calculating the total oil yield. The original TOC was restored through a series of calculations. The ratio of the original TOC to the present-day TOC is between 1 and 1.79, with an average of 1.28. Therefore, it is not necessary to restore the original TOC through a series of complex calculations for shale source rocks with low to medium maturities and high residual TOC. Total oil yield is correlated with the siliceous and clay mineral to some extent, but it is poorly correlated with the carbonate mineral. Some special forms of organic sulfur may help enhance kerogen conversion to oil, which facilitates the shale to produce more oil during the early hydrocarbon generation stage.

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Section: Resultsmentioning

confidence: 99%

Geochemical Evaluation of the Hydrocarbon Potential of Shale Oil and Its Correlation with Different Minerals–a Case Study of the TYP Shale in the Songliao Basin, China

Hou

Han

et al. 2020

Energy Fuels

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“…Brittleness index of fractured reservoir in coal seam top was an important evaluation index that determined the fracturing effect and gassed production effect of coalbed gas (Kim et al 2017;Rahimzadeh et al 2018;Raef et al, 2018). There were more than 20 methods to measure brittleness.…”

Section: Evaluation Methods Of Brittleness Of Coal Seam Top and Bottom Plates Based On Mineral Compositionmentioning

confidence: 99%

“…Therefore, for the traditional coalbed gas development, the parameters such as coal quality, gas content and reservoir physical properties (porosity, permeability) of coal reservoirs became the key parameters of coalbed gas reservoir evaluation. For the development of coalbed gas in broken soft coal seam, it was pay special attention to the evaluation and research of key parameters of reservoir fracturing such as mineralogy, petrology and engineering mechanics of roof and floor of coal seam (Wang et al, 2012;Wu et al, 2012;Rahimzadeh et al, 2018;Raef et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Significance of Rock Mineral Composition On Rock Mechanical Properties And Brittleness Evaluation of Roof And Floor of Broken Soft Coal Seam

Liang

Shan

et al. 2021

Preprint

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Fracture of coal structure and low permeability were the main reasons for the “difficult to released gas” in broken soft coal seam. Exploration of horizontal well coalbed gas technology of roof and floor of broken soft coal seam provided a new technical way for coalbed gas development in broken soft coal seam. In this paper, taking Xinxie -1 drilling as an example, the evaluation method of fractured reservoirs in roof and floor of broken soft coal seam was improved. By systematic studied on mineralogy, petrology and engineering mechanics characteristics of top and bottom plates in broken soft coal seam, the influence of rock mineral composition on the rock mechanics properties of the roof and floor of coal seam was explored. In addition, By used correlation analysis and grey relational analysis, a brittle evaluation method of coal seam top and bottom plates based on mineral composition was established. The research results showed that: ①The main components of rock minerals in the top and bottom plates of broken soft coal seam were quartz and clay minerals, followed by plagioclase, siderite and pyrite. The main types of rock cementation were quartz enlargement and siderite cementation, and the pore damage caused by cementation was much greater than that of compaction; ②With the increased of rock particle size, compressive strength (CS) and elastic modulus (E) showed a gradual increase trend, Poisson's ratio (μ) showed a gradual decrease trend, other rock mechanical parameters had no obvious changes. The difference of mineral composition and cementation type was the key factor cause abnormal mechanical properties of rocks; ③Compared with clay minerals, the change of brittle mineral content such as quartz, plagioclase and siderite in rocks were sensitive to the mechanical properties of rocks. The sensitive minerals of compressive strength, shear strength, elastic modulus and softening coefficient were quartz, the sensitive minerals of compressive strength were plagioclase and siderite, and the sensitive minerals of Poisson's ratio are quartz and clay; ④The calculation results of the established mineral weight analysis method were more realistic. It could be concluded that the roof of 13-1 coal, 11-2 coal, 9-2 coal and 4-2 coal seams were more inclined to form fracture network during fracturing, which had guiding significance for the optimization of fracturing horizon.

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“…1064 nm pulsed power in wavelength and 20 mJ/pulse, and power stability of the source is 3% Xie et al [94] Ultrasonic (ULT) Pand S-wave platens Less than 45.35 kg of shear stress pressure with 11.5 and 17.5 μs for P-waves and Swaves, respectively. Raef et al [95] Ultrasonic transmission (UT) and acoustic emission (AE)…”

Section: Techniques Conditions Referencementioning

confidence: 99%

Applied techniques for residual oil recovery from source rocks: A review of current challenges and possible developments

Abdulkareem

Padmanabhan

2020

Can J Chem Eng

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Depleted fossil fuel resources have led to an investigation of other promising alternatives such as renewable and unconventional energy sources. Shale formations have limited permeability. Therefore, several extraction techniques have been applied to improve residual oil recovery and production. In this work, the techniques applied above ground to extract the organic fractions from oil/gas shale are discussed. Studies related to compositional fractionation, ultrasonic-assisted, microwave-assisted, supercritical fluids, and surface retorting techniques have been conducted systematically in approximately 150 scholarly articles over the past 10 years. The impacts of each technique as well as the drawbacks and challenges are highlighted in this paper. The fractionation techniques are sufficient in general; however, they are time consuming as they include several stages and use a considerable amount of solvents. Ultrasonic and microwave techniques are highly reliant on formation transparency linked to the organic fraction heterogeneous distribution. The surface retorting method, which is highly efficient with up to 90% recovery, for example, the Galoter and Paraho methods, is still dependent on shale particulate size, generates a massive amount of spent shale as waste, and is prominently emissive. Therefore, assessments that can be used to overcome existing drawbacks are considered. This can provide practical insight about these techniques to overcome limitations and concerns in terms of efficiency, cost, environmental issues, and reliability features. The work highlights the dominant extraction techniques for further development.

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The dynamic elastic and mineralogical Brittleness of Woodford shale of the Anadarko Basin: Ultrasonic P-wave and S-wave velocities, XRD-Mineralogy and predictive models

Cited by 15 publications

References 20 publications

Geochemical Evaluation of the Hydrocarbon Potential of Shale Oil and Its Correlation with Different Minerals–a Case Study of the TYP Shale in the Songliao Basin, China

Geochemical Evaluation of the Hydrocarbon Potential of Shale Oil and Its Correlation with Different Minerals–a Case Study of the TYP Shale in the Songliao Basin, China

Significance of Rock Mineral Composition On Rock Mechanical Properties And Brittleness Evaluation of Roof And Floor of Broken Soft Coal Seam

Applied techniques for residual oil recovery from source rocks: A review of current challenges and possible developments

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