砂岩储层的岩石学和物理特征描述

IF 0.6 4区 工程技术 Q4 ENERGY & FUELS Chemistry and Technology of Fuels and Oils Pub Date : 2024-07-19 DOI:10.1007/s10553-024-01733-7
Shoujun Wang
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摘要

本研究旨在研究中国西北准噶尔盆地侏罗系三工河组储层的岩石学特征及其物理特征,以优化油气勘探开发战略。本研究通过采集和分析岩芯样品,采用铸岩薄片分析、压汞法孔隙结构划分测试和扫描电镜实验分析等方法,系统研究了储层砂岩的类型、结构特征和孔隙渗透率关系。结果表明,三工河组储层砂岩以长石质长石砂岩和碎屑长石砂岩为主,成分成熟度偏低。储层颗粒的圆润度和胶结度分析揭示了其非均质特征,孔隙度和渗透率呈明显的正相关。储层孔隙结构表征表明,孔喉半径的大小和分布对渗透率有显著影响,孔喉的变化对渗透率的影响更为明显。桑公河地层第二段上部储层孔隙度范围为 10.9%~26.1%,平均值为 17.6%,渗透率范围为 0.13 mD~159 mD,平均值为 24.43 mD。相渗透率特征分析表明,油相相对渗透率随含水饱和度的提高而降低,水相相对渗透率提高,研究区油藏的束缚水饱和度普遍较高,范围在35.6%~50.2%之间。35.6%至50.2%,平均值为41.6%,显示出较强的亲水性。综上所述,本研究详细分析了准噶尔盆地侏罗系桑公河地层储层的岩石学和物理特征,为该地区油气勘探开发提供了重要的地质资料和理论依据。
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Petrology and Physical Characterization of Sandstone Reservoirs

The aim of this study is to investigate the petrological characteristics of the Jurassic Sangonghe Formation reservoirs in the Junggar Basin, Northwest China, and their physical characteristics in order to optimize the strategy of oil and gas exploration and development. Through the collection and analysis of core samples, this study systematically investigated the types, structural characteristics and pore-permeability relationships of the reservoir sandstones by using rock cast thin section analysis, pore structure delineation test by piezomercury method and experimental analysis by scanning electron microscopy. The results show that the sandstones in the reservoir of the Sangonghe Formation are dominated by feldspathic feldspathic sandstones and clastic feldspathic sandstones, and the maturity of the compositions is on the low side. The analysis of the rounding degree and cementation degree of the reservoir particles reveals its non-homogeneous characteristics, and the porosity and permeability show obvious positive correlation. Characterization of the pore structure of the reservoir shows that the size and distribution of the pore throat radius significantly affects the permeability, and the change of the throat has a more significant effect on the permeability. The porosity of the upper reservoir in the second section of the Sangonghe Formation ranges from 10.9% to 26.1%, with an average value of 17.6%, and the permeability ranges from 0.13 mD to 159 mD, with an average value of 24.43 mD. The characterization of the phase permeability analysis shows that the relative permeability of the oil phase decreases with the increase of the water saturation, and the relative permeability of the water phase increases, and the bound water saturation of the reservoirs in the study area is generally higher, with a range of 35.6% to 50.2%. 35.6% to 50.2%, with an average value of 41.6%, showing strong hydrophilicity. In summary, the petrological and physical characteristics of the Jurassic Sangonghe Formation reservoirs in the Junggar Basin are analyzed in detail in this study, which provides important geological data and theoretical basis for the exploration and development of oil and gas in this area.

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来源期刊
Chemistry and Technology of Fuels and Oils
Chemistry and Technology of Fuels and Oils 工程技术-工程:化工
CiteScore
0.90
自引率
16.70%
发文量
119
审稿时长
1.0 months
期刊介绍: Chemistry and Technology of Fuels and Oils publishes reports on improvements in the processing of petroleum and natural gas and cracking and refining techniques for the production of high-quality fuels, oils, greases, specialty fluids, additives and synthetics. The journal includes timely articles on the demulsification, desalting, and desulfurizing of crude oil; new flow plans for refineries; platforming, isomerization, catalytic reforming, and alkylation processes for obtaining aromatic hydrocarbons and high-octane gasoline; methods of producing ethylene, acetylene, benzene, acids, alcohols, esters, and other compounds from petroleum, as well as hydrogen from natural gas and liquid products.
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