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Investigation of the mechanism of secondary microcrack growth in rocks with native microdefects

Investigation of the mechanis... 2024-01-24

关键词:: Microdefects; Brazilian splitting experiment; Secondary microcrack (SMC); Growth mechanism; Discrete element method (DEM)

Exploring secondary microcracks (SMC) growth during hydraulic fracturing in rocks with native microdefects is a challenging task in unconventional oil and ga...

作者:: Sipeng Zheng,Mian Lin,Wenbin Jiang,Jing Zhao,Xin Qiu,Zhuo Chen
文件大小:: 49.3 MiB

The eogenetic karst of the Cambrian Longwangmiao Formation in the Yangtze Platform: Implications for the eustatic and stratigraphic correlations of Toyonian (Cambrian)

The eogenetic karst of the Ca... 2024-01-24

关键词:: carbon isotope; eogenetic karst; Longwangmiao Formation; stratigraphic correlation; YangtzePlatform

To make a better understanding of the stratigraphic correlation and ocean processes during the transition from Series 2 to Series 3 in the Cambrian, this stu...

作者:: Chaojin Lu,Zhen Liu,Haibo Jia,Haiqin Tian,Huayao Zou,Quanqi Dai,Bo Han
文件大小:: 7.1 MiB

鄂尔多斯盆地早古生代庆阳和乌审旗古隆起构造演化及其对寒武系岩相古地理的控制

鄂尔多斯盆地早古生代庆阳和乌审旗古隆起构造演化及其对寒武系岩相古地理的控制 2024-01-24

关键词:: 古隆起; 构造演化; 沉积填充; 岩相古地理; 寒武系; 鄂尔多斯盆地

鄂尔多斯盆地早古生代南、北两个古隆起的构造演化过程认识尚不明确，制约了油气勘探及盆地沉积充填演化过程的研究。基于最新钻井、野外剖面及地震资料，采用地震反射接触关系和滨岸相识别等手段，对庆阳古隆起和乌审旗古隆起进行约束与刻画，认为其总体经历了寒武纪的古隆起逐渐淹没阶段、寒武纪—奥陶纪的抬升剥蚀阶段、早奥陶世冶里组-...

作者:: 张春林,邢凤存,张月巧,姜福杰,徐旺林,张阿敏
文件大小:: 9.4 MiB

多孔介质孔隙结构及其比表面的新认识

多孔介质孔隙结构及其比表面的新认识 2024-01-24

关键词:: 多孔介质; 孔隙结构; bet; bjh; 扫描电镜

随着对以页岩为代表的微纳结构多孔介质研究的深入，对其孔隙结构的表征要求逐渐精细化、标准化、原理清晰化。以页岩为例，准确表征其内部的孔隙结构，是获取储层内部页岩气储存状态、流动特征及岩石力学性质的基本依据。页岩为代表的多孔介质其孔隙结构具有复杂的特性，微纳尺度的孔隙结构衍生出复杂形态的连通结构；低孔隙结构又使得岩石...

作者:: 杨明
文件大小:

Damage stratigraphy as a controlling mechanism of earthquakes distribution and fault patterns

Damage stratigraphy as a cont... 2024-01-24

关键词:: Damaged Stratigraphic Unit; Decollement zone; Fault patterns; Earthquakesdistribution; Geohazard.

Decollement zones are sub-horizontal weak zones in the earth's crust that strongly affect tectonic deformation. The weakness of a decollement zone is commonl...

作者:: Zonghu Liao,Lin Zhang,Huayao Zou,Fang Hao,Ze'ev Reches
文件大小:: 14.7 MiB

构造枢纽带的确定、类型划分及其油气意义

构造枢纽带的确定、类型划分及其油气意义 2024-01-24

关键词:: 叠合盆地; 跷跷板运动; 构造枢纽带; 范围含油气性; 石油地质

中国中西部发育大量的叠合盆地,中深层纵向上形成了隆起、凹陷、正向叠加(古隆起)、负向叠加(凹陷或洼陷)、跷跷板式等叠加样式.它们对于油气的富集与保存有着不同的作用.跷跷板式叠加作用是盆地边缘最为常见的叠加样式.分析表明,在盆地垂向调整、改造过程中构造枢纽带是必然产物,是调整范围的一部分,是新的构造圈闭区范围.向盆...

作者:: 云金表,金之钧,宁飞,刘士林,罗吉
文件大小:: 6.9 MiB

Influence of thermochemical sulfate reduction on oxygen isotopic composition of calcite cements in carbonates of the triassic feixianguan and Permian Changxing formations in the Sichuan Basin, China

Influence of thermochemical s... 2024-01-24

关键词:: calcite cement; diagenesis; oxygen-isotopic composition; thermochemical sulfatereduction; Sichuan Basin

Calcite cement is a common diagenetic mineral in carbonate rocks and plays an important role on rock quality as hydrocarbon reservoirs. Traditionally, oxygen...

作者:: Guangwei Wang,Fang Hao,Huayao Zou,Pingping Li
文件大小:: 4.5 MiB

基于Voronoi模型的脆性岩石微观结构数值模拟

基于Voronoi模型的脆性岩石微观结构数值模拟 2024-01-24

关键词:: 离散元方法; Voronoi 模型; 脆性岩石; 岩石微结构; 裂纹密度

基于离散元软件UDEC中的Voronoi模型,构建了致密岩石的标准压缩数值试件;应用FISH语言编译相关程序,监测不同脆性致密岩石的裂纹数量和密度在压缩过程中的变化特征。研究发现,随着岩石脆性指数的增加,岩石的起裂应力逐渐增加,而起裂点裂纹密度逐渐减小,高脆性岩石则是在较高的应力状态和较低的裂纹损伤状态下达到裂纹...

作者:: 邱鑫,林缅,郑思平,陈天宇
文件大小:: 5.9 MiB

基于分形理论的非常规油气渗流规律研究

基于分形理论的非常规油气渗流规律研究 2024-01-24

关键词:: 混合分形; 非常规油气; 页岩; 致密砂岩; 渗透率

非常规储层具有非均质性强、渗透率超低，且油气运移规律复杂的特性，与常规储层有很大不同。探寻非常规储层中影响油气运移的关键因素，准确高效地评价渗流趋势，是国内外学者和工程师们的关注焦点。本文以分形理论为基础，以页岩和致密砂岩为对象，构建了单相流体和两相流体在页岩和致密砂岩中的渗流模型，为研究非常规储层的油气渗流规律...

作者:: 李曹雄
文件大小:

致密砂岩微裂缝网生长机制的研究

致密砂岩微裂缝网生长机制的研究 2024-01-24

关键词:: 致密砂岩; 水力压裂; 微裂缝网; 离散元法; 岩石微结构

非常规油气在全球能源中扮演的角色越来越重要。致密砂岩储层作为非常规储层的典型代表，对其实现大规模经济开采一直是能源行业关注的焦点。但致密砂岩通常具有低孔隙度和低渗透率的特点，所以需要在储层中构建人工缝网来增加油气从孔隙向井筒运移的能力。因此研究致密砂岩微裂缝网形成的力学机制至关重要。本文聚焦于以脆性矿物为主的致密...

作者:: 郑思平
文件大小:

Using Clumped Isotopes to Reconstruct the Maximum Burial Temperature: A Case Study in the Sichuan Basin

Using Clumped Isotopes to Rec... 2024-01-24

关键词:: clumped isotopes; maximum burial temperature; carbonate; solid-state reordering; Sichuan Basin; vitrinite reflectance

For strata that have experienced continual burial in the early stage and uplift in the late stage, the present-day temperature is lower than the maximum buri...

作者:: Pingping Li,Jinbao Duan,Zhongzhen Cheng,Huayao Zou
文件大小:: 25.1 MiB

Direct Rubidium-Strontium Dating of Hydrocarbon Charge Using Small Authigenic Illitic Clay Aliquots from the Silurian Bituminous Sandstone in the Tarim Basin, NW China

Direct Rubidium-Strontium Dat... 2024-01-24

关键词:: potassium-argon; Silurian bituminous sandstone; rubidium-strontium

Illitic clay is ubiquitous in clastic hydrocarbon reservoirs, and the host for several radiometric isotopes such as the potassium-argon (K-Ar) and rubidium-s...

作者:: Shaojie Li,Xuan-Ce Wang,Chao-Feng Li,Simon A. Wilde,Youyu Zhang,Suzanne D. Golding,Keyu Li & Yuxiang Zhang
文件大小:: 5.9 MiB

Geochemical characteristics and significance of the bitumen in Sinian reservoirs in Sichuan basin and its periphery[四川盆地及周缘地区震旦系储层沥青地球化学特征及其意义]

Geochemical characteristics a... 2024-01-24

关键词:: Doushantuo Formation; bitumen of Dengying Formation-Longwangmiao Formation; bitumen of Sinian

The bitumen of Doushantuo Formation distributed along fractures has been firstly discovered in the dolomite reservoirs of Dou-3 Member in Zigui region, Yicha...

作者:: Z Y Xie,J Li,L Zhang,C L Yang,J Y Guo,Z H Wang,Z S Li,Z Q Guo,G W Zhang,J Li
文件大小:: 1.1 MiB

Lithofacies classification and origin of the Eocene lacustrine fine-grained sedimentary rocks in the Jiyang Depression, Bohai Bay Basin, Eastern China(渤海湾盆地济阳坳陷始新世湖相细粒沉积岩岩相分类及成因)

Lithofacies classification an... 2024-01-24

关键词:: Fine-grained sedimentary rocks; Lithofacies assemblages; Lithofacies classification Shale oil Jiyang Depression

There are multiple sets of lacustrine source rocks in the Paleogene of the Jiyang Depression, Bohai Bay Basin, Eastern China, which are main targets in the t...

作者:: Juye Shi,Zhijun Jin,Quanyou Liu,Zhenkai Huang
文件大小:: 608.1 KiB

区带勘探中的油气资源评价方法

区带勘探中的油气资源评价方法 2024-01-24

关键词:: 地质帕莱托; 勘探效率图版; 投资组合; 地质风险评价; 区带定量评价; 油气资源评价

国内外主流统计方法的预测结果，作为区带高效勘探部署的有效决策依据还有一段距离，评价方法研究与应用仍有提升空间。立足于提升区带商业发现效益以及解决区带勘探部署规划中的实际问题，分别提出:①区分边际概率、条件概率与空间概率模型的地质模型内涵与适用条件，揭示特定地质条件约束下的地质风险，辅助提升低勘探程度区带的预探目标...

作者:: 盛秀杰,金之钧,肖晔
文件大小:: 2.3 MiB

Clumped isotopes of paired dolomite and calcite constraining alteration histories of ancient carbonate successions

Clumped isotopes of paired do... 2024-01-24

关键词:: Solid-state reordering; Recrystallization; Hydrothermal fluids; Dolomiteisolation; Acetic acid; Sichuan Basin

Clumped isotope thermometry is an effective tool which allows to understand the post-depositional alteration, including recrystallization and solid-state reo...

作者:: Chaojin Lu,Huayao Zou,Guangwei Wang,Fuyun Cong,Yongbin Quan,Peter K. Swart
文件大小:: 1.9 MiB

Paleoceanographic reconstruction of the Ediacaran Dengying Formation, Sichuan Basin, Southwest China: Implications for the origin of Precambrian microbial carbonates

Paleoceanographic reconstruct... 2024-01-24

关键词:: Redox conditions; Salinity; Microbial carbonate; Dengying formation; Sichuan basin

Abundant microbial carbonates with well-preserved primary textures occur in the upper Ediacaran Dengying Formation in the Sichuan Basin, southwest China, pro...

作者:: Caijun Lan,Zhehang Xu,Haoru Chen,Weiqiang Yang,Chaojin Lu,Pingping Li,Huao Zou
文件大小:: 21.4 MiB

Direct dating Paleo-fluid flow events in sedimentary basins

Direct dating Paleo-fluid flo... 2024-01-24

关键词:: Fluid flow; In-situ calcite U-Pb dating; Fluid inclusions; Carbonate reservoir; Tarim Basin

Reconstructing fluid evolution history in old sedimentary basins is extremely challenging due to the prolonged evolution, lack of exact age constraints and a...

作者:: Peng Yang,Keyu Liu,Zhen Li,Kai Rankenburg,Brent I.A. McInnes,Jianliang Liu,Noreen J. Evans
文件大小:: 4.2 MiB

Applying NMR T2 spectral parameters in pore structure evaluation—An example from an Eocene low-permeability sandstone reservoir in the Dongying Depression, Bohai Bay Basin, China

Applying NMR T2 spectral para... 2024-01-24

关键词:: NMR T2 spectra; pore structure; low-permeability sandstones; Dongying Depression

The Eocene low-permeability sandstone reservoirs in the Dongying Depression, Bohai Bay Basin, China host a significant amount of oil reserves. The developmen...

作者:: Yan Lu,Keyu Liu,Ya Wang
文件大小:

Early-stage marine dolomite altered by hydrothermal fluids in the Middle Permian Maokou Formation in the eastern Sichuan Basin, Southern China

Early-stage marine dolomite a... 2024-01-24

关键词:: Dolomitization; Marine dolomite; Hydrothermal fluids; Massive dolostone; Patchy dolostone; Maokou formation; Sichuan basin

Deciphering the dolomitization process is the key to understanding the formation of massive dolostones on shallow-marine platforms, it also improves our unde...

作者:: Ting Li,Dancheng Zhu,Minglei Yang,Xihua Zhang,Pingping Li,Chaojin Lu,Huayao Zou
文件大小:: 23.1 MiB