Experimental study on the sandstone abrasiveness via mineral composition and microstructure analysis

IF 4.2 Q2 ENERGY & FUELS Petroleum Pub Date : 2023-05-11 DOI:10.1016/j.petlm.2023.05.002
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Abstract

Rock abrasiveness is an important factor affecting the tool's lifetime and efficiency in breaking a rock. Characterizing rock abrasiveness helps in the design, optimization, and mean-life prediction of tools. X-ray diffraction, cast thin section analysis, and CERCHAR abrasiveness tests were performed on 18 different sandstones to characterize rock abrasiveness and explore new methods for characterization. The relationship between the mineral composition and microstructure of sandstone and abrasiveness was investigated. The results show that different structural maturities have varying effects on abrasiveness. In addition, the higher the structural maturity, the more the abrasiveness. Furthermore, in sandstones of the same structural maturity, the abrasiveness increases with equivalent quartz content (EQC). The texture coefficient (TC) and CERCHAR abrasiveness index (CAI) of sandstones with the same structural maturity showed a good linear relationship. Moreover, the correlation coefficients considering the combined parameters are above 0.85. Therefore, obtaining the microstructure and mineral composition of sandstone can effectively characterize rock abrasiveness. It also provides a new method for predicting the abrasiveness of the rock in the well.

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通过矿物成分和微观结构分析对砂岩磨蚀性的实验研究
岩石磨蚀性是影响工具使用寿命和破岩效率的重要因素。表征岩石磨蚀性有助于工具的设计、优化和平均寿命预测。我们对 18 种不同的砂岩进行了 X 射线衍射、铸造薄片分析和 CERCHAR 磨蚀性测试,以确定岩石磨蚀性的特征,并探索新的表征方法。研究了砂岩的矿物成分和微观结构与磨蚀性之间的关系。结果表明,不同的结构成熟度对磨蚀性有不同的影响。此外,结构成熟度越高,磨蚀性越强。此外,在结构成熟度相同的砂岩中,磨蚀性随等效石英含量(EQC)的增加而增加。结构成熟度相同的砂岩的质地系数(TC)和 CERCHAR 耐磨性指数(CAI)呈良好的线性关系。此外,综合参数的相关系数均在 0.85 以上。因此,获取砂岩的微观结构和矿物成分可以有效地表征岩石的磨蚀性。这也为预测井中岩石的磨蚀性提供了一种新方法。
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来源期刊
Petroleum
Petroleum Earth and Planetary Sciences-Geology
CiteScore
9.20
自引率
0.00%
发文量
76
审稿时长
124 days
期刊介绍: Examples of appropriate topical areas that will be considered include the following: 1.comprehensive research on oil and gas reservoir (reservoir geology): -geological basis of oil and gas reservoirs -reservoir geochemistry -reservoir formation mechanism -reservoir identification methods and techniques 2.kinetics of oil and gas basins and analyses of potential oil and gas resources: -fine description factors of hydrocarbon accumulation -mechanism analysis on recovery and dynamic accumulation process -relationship between accumulation factors and the accumulation process -analysis of oil and gas potential resource 3.theories and methods for complex reservoir geophysical prospecting: -geophysical basis of deep geologic structures and background of hydrocarbon occurrence -geophysical prediction of deep and complex reservoirs -physical test analyses and numerical simulations of reservoir rocks -anisotropic medium seismic imaging theory and new technology for multiwave seismic exploration -o theories and methods for reservoir fluid geophysical identification and prediction 4.theories, methods, technology, and design for complex reservoir development: -reservoir percolation theory and application technology -field development theories and methods -theory and technology for enhancing recovery efficiency 5.working liquid for oil and gas wells and reservoir protection technology: -working chemicals and mechanics for oil and gas wells -reservoir protection technology 6.new techniques and technologies for oil and gas drilling and production: -under-balanced drilling/gas drilling -special-track well drilling -cementing and completion of oil and gas wells -engineering safety applications for oil and gas wells -new technology of fracture acidizing
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