Experimental Study on Logging Evaluation of Matrix Mineral Modulus of Tight Sandstone Reservoir

IF 0.6 4区 工程技术 Q4 ENERGY & FUELS Chemistry and Technology of Fuels and Oils Pub Date : 2024-03-20 DOI:10.1007/s10553-024-01660-7
Maoxian Pu
{"title":"Experimental Study on Logging Evaluation of Matrix Mineral Modulus of Tight Sandstone Reservoir","authors":"Maoxian Pu","doi":"10.1007/s10553-024-01660-7","DOIUrl":null,"url":null,"abstract":"<p>Porosity has an important influence on the elastic properties of tight sandstone. Using acoustic models to study the matrix mineral modulus of tight sandstone reservoirs can provide an important reference for tight sandstone reservoir evaluation. In this paper, taking tight sandstone as an example, starting from the microscopic pore scale and considering the heterogeneity of the rock skeleton, the effect of the effective stress coefficient of porosity (n) on the elastic properties of tight sandstone was discussed. In addition, the acoustic model was used to construct the calculation method of the matrix mineral shear modulus. The research results showed that the porosity disturbance model can better describe the change law of the elastic properties of the tight sandstone. As the value of n decreases from 1 to 0, the bulk modulus (K<sub>φ</sub>) of the unencapsulated rock gradually decreases. In the process of increasing from n=0 to n=4, the rock Kud has a slight increase trend. The fluid pressure does not produce a reverse stress effect on the movement of the rock pore boundary, that is, the fluid pressure does not have any effect on the change of the rock porosity. When n&gt;0, the pore fluid pressure will affect the movement of the rock pore boundary to a certain extent. When the porosity disturbance is not considered, the K<sub>φ</sub> value of the formation rock will be overestimated. The Ko of tight sandstone can be obtained using Gassmann fluid substitution equation. The calculation results of modulus parameters accord with the internal mineral composition and structural characteristics of tight sandstone, which shows the effectiveness of the method.</p>","PeriodicalId":9908,"journal":{"name":"Chemistry and Technology of Fuels and Oils","volume":null,"pages":null},"PeriodicalIF":0.6000,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemistry and Technology of Fuels and Oils","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1007/s10553-024-01660-7","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0

Abstract

Porosity has an important influence on the elastic properties of tight sandstone. Using acoustic models to study the matrix mineral modulus of tight sandstone reservoirs can provide an important reference for tight sandstone reservoir evaluation. In this paper, taking tight sandstone as an example, starting from the microscopic pore scale and considering the heterogeneity of the rock skeleton, the effect of the effective stress coefficient of porosity (n) on the elastic properties of tight sandstone was discussed. In addition, the acoustic model was used to construct the calculation method of the matrix mineral shear modulus. The research results showed that the porosity disturbance model can better describe the change law of the elastic properties of the tight sandstone. As the value of n decreases from 1 to 0, the bulk modulus (Kφ) of the unencapsulated rock gradually decreases. In the process of increasing from n=0 to n=4, the rock Kud has a slight increase trend. The fluid pressure does not produce a reverse stress effect on the movement of the rock pore boundary, that is, the fluid pressure does not have any effect on the change of the rock porosity. When n>0, the pore fluid pressure will affect the movement of the rock pore boundary to a certain extent. When the porosity disturbance is not considered, the Kφ value of the formation rock will be overestimated. The Ko of tight sandstone can be obtained using Gassmann fluid substitution equation. The calculation results of modulus parameters accord with the internal mineral composition and structural characteristics of tight sandstone, which shows the effectiveness of the method.

Abstract Image

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
致密砂岩储层基质矿物模量测井评价试验研究
孔隙度对致密砂岩的弹性性质有重要影响。利用声学模型研究致密砂岩储层的基质矿物模量,可为致密砂岩储层评价提供重要参考。本文以致密砂岩为例,从微观孔隙尺度出发,考虑岩石骨架的异质性,讨论了孔隙度有效应力系数(n)对致密砂岩弹性性质的影响。此外,还利用声学模型构建了基质矿物剪切模量的计算方法。研究结果表明,孔隙度扰动模型能较好地描述致密砂岩弹性性质的变化规律。随着 n 值从 1 减小到 0,未包裹岩石的体积模量(Kφ)逐渐减小。在 n=0 到 n=4 的过程中,岩石 Kud 有轻微上升的趋势。流体压力对岩石孔隙边界的运动不产生反向应力作用,即流体压力对岩石孔隙度的变化不产生任何影响。当 n>0 时,孔隙流体压力会在一定程度上影响岩石孔隙边界的运动。当不考虑孔隙度扰动时,地层岩石的 Kφ 值将被高估。致密砂岩的 Ko 值可通过 Gassmann 流体置换方程求得。模量参数的计算结果符合致密砂岩的内部矿物组成和结构特征,表明了该方法的有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
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.
期刊最新文献
Studying the Accumulation Characteristics of Crude Oil in an Oil Formation in the Aspect of Predicting the Effectiveness of Crude Oil Exploration Research on Oil Production Forecasting Method of Tight Oil Reservoir Based on Grey Correlation Method Research on the Physical Strength of Surface Conductor Soil Under Deep Jet Drilling Characterization of Pore Structure and Two-Phase Seepage Pattern in Sandstone Conglomerate Based on CT Scanning Pile Penetration Analysis and Suggestions of Jacket Platform Skirt Pile Sinking
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1