Tian Yang

Tian Yang
Chengdu University of Technology | CDUT · Institute of Sedimentary Geology

PhD

About

40
Publications
16,261
Reads
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650
Citations
Citations since 2016
26 Research Items
624 Citations
2016201720182019202020212022050100150
2016201720182019202020212022050100150
2016201720182019202020212022050100150
2016201720182019202020212022050100150

Publications

Publications (40)
Article
Full-text available
Understanding the flow processes that form gravity-flow deposits is vital for modeling and predicting sandstone bodies in the subsurface, which is of great significance for conventional and unconventional oil and gas exploration and development in lacustrine basins. This study analyses gravity-flow deposits of the Late Triassic Chang 7 oil member o...
Conference Paper
Full-text available
Understanding the flow processes that form gravity-flow deposits is vital for modeling and predicting sandstone bodies in the subsurface, which is of great significance for conventional and unconventional oil and gas exploration and development in lacustrine basins. This study analyses gravity-flow deposits in the Late Triassic Chang 7 member of Ya...
Article
Full-text available
Understanding how subaqueous sediment gravity flows (SSGF) evolve in time and space, and how their deposits vary spatially, is a key research focus for gravity flow sedimentology. This study investigates depositional facies, depositional elements, and sediment transport processes of supercritical flows and hybrid event beds (HEBs) of the Lingshanda...
Article
Full-text available
"Gravity flows may be triggered by different initiation processes in both marine and lacustrine basins. Recognizing the different initiation processes of gravity flow based on their deposits is vital to accurately establish gravity-flow sandstone distribution, which is important for defining paleogeography and for efficient oil and gas exploration. Grav...
Article
It has been shown that ankerite in clastic reservoirs can preserve an extended record of diagenesis and thus the fluid flow history in sedimentary basins. Ankerite cements with distinct zoning textures are well developed in gravity-flow sandstones associated with magmatic intrusions in the Linnan Sag, Eastern China. This example offering a rare opp...
Article
Full-text available
Burial dissolution of feldspar and carbonate minerals has been proposed to generate large volumes of secondary pores in subsurface reservoirs. Secondary porosity due to feldspar dissolution is ubiquitous in buried sandstones; however, extensive burial dissolution of carbonate minerals in subsurface sandstones is still debatable. In this paper, we f...
Article
Net pay cut-off values are key parameters in the evaluation of both conventional and unconventional reservoirs. However, there is no widely accepted method for determining net pay cut-off values. The low permeability turbidite reservoirs in the middle part of the third member of the Shahejie Formation (Es3z) in the Dongying Sag are taken as an exam...
Article
Full-text available
The feldspar group is one of the most common types of minerals in the earth's crust. Feldspar alteration (including the whole processes of feldspar dissolution, transfer of released solutes, and secondary mineral precipitation) is ubiquitous and important in fields including resources and environmental sciences. This paper provides a critical revie...
Article
Full-text available
This article reviews the applications of light stable isotope, including carbon, oxygen and hydrogen, in the studies on origin and formation temperature of authigenic carbonate, quartz and clay minerals. Theoretical knowledge and analytical methods for major light stable isotopes are introduced in detail. Negative and positive δ¹³C values indicate...
Article
Subaqueous sediment gravity-flow (SSGF) deposits have recently been recognized as a major reservoir plays in lacustrine basins. Research on their genesis and depositional models are crucial to understand gravity flow evolution and the distribution of their deposits. This study analysed SSGF deposits in the third member of the Shahejie Formation in...
Article
Base the problems in the study of characteristics and genesis of low-permeability reservoirs, the characteristics of low-permeability reservoirs and the genesis of relatively high-quality reservoirs in the Dongying sag are analyzed through core observation, thin-section identification, analytical testing and other technologies, with the basin struc...
Article
Full-text available
On the basis of detailed sedimentological investigation, three types of hybrid event beds (HEBs) together with debrites and turbidites were distinguished in the Lower Cretaceous sedimentary sequence on the Lingshan Island in the Yellow Sea, China. HEB 1, with a total thickness of 63–80 cm and internal bipartite structures, is characterised by a bas...
Article
The diagenetic evolution and chemical changes of mudstones have a significant influence on the reservoir quality of the mudstones and their interbedded sandstones. To investigate, a variety of methods were applied to the mudstones in the middle of the third member of the Shahejie Formation (Es3z), which were formed in a lacustrine basin during 43.7...
Article
The lacustrine deep-water gravity-flow sandstone reservoirs in the third member of the Shahejie Formation are the main exploration target for hydrocarbons in the Dongying Sag, Eastern China. Carbonate cementation is responsible for much of the porosity and permeability reduction in the lacustrine deep-water gravity-flow sandstone reservoirs. The sa...
Article
Full-text available
Supercritical sediment gravity-flow refers to the high-density flow with Froude number more than 1, transporting from underwater slope towards basin center, able to frequently transform between supercritical flow and subcritical flow under hydraulic jump mechanism, so as to form large wave-shaped cyclic steps easy to be preserved. The sedimentary i...
Article
The accurate determination method of anomalously high porosity sections is critical for the exploration of middle and deep burial clastic reservoirs. Taking the reservoirs of the upper part of the fourth member of the Shahejie Formation (Es4s) in the south slope of the Dongying Sag as the research object, porosity testing, and statistical analysis...
Article
Hybrid event bed refers to the deposit of mixed deep-water gravity flow in a single gravity flow event which contains turbidity current, debris flow and sometimes transitional flow. Hybrid event beds can be subdivided into three types: sandy debrite-turbidite couplets (type 1), co-genetic turbidite-muddy debrite beds (type 2), and turbidite-muddy d...
Article
The characteristics of the low permeability turbidite reservoirs in the middle of the third member of the Shahejie Formation in Dongying sag were studied and the effectiveness were evaluated using cores, thin sections, oil production testing, porosity and permeability, and integrated interpretation data. Permeability difference was first determined...
Article
Full-text available
The relationships between permeability and dynamics in hydrocarbon accumulation determine oil-bearing potential (the potential oil charge) of low permeability reservoirs. The evolution of porosity and permeability of low permeability turbidite reservoirs of the middle part of the third member of the Shahejie Formation in the Dongying Sag has been i...
Article
The genesis of high-quality reservoirs is the crucial problem to determine the effective exploration and development for the middle and deep burial reservoirs. This study focuses on the fan delta front reservoir in the lower part of the fourth member of the Shahejie Formation in Bonan subsag. Core and thin section observation, physical property tes...
Article
The deep-water gravity flow in the middle submember of Member 3, Shanghejie Formation, Jiyang depression was taken as the research object in this study. Based on the differences in sediment composition structure, concentration, transportation-sedimentation mode and fluid rheological characteristics, a study was carried out on the types, sedimentary...
Research
n order to analyze the influencing factors of sandstone mechanical compaction and its physical property evolution law during compaction process, simulation experiments on sandstone mechanical compaction were carried out with the self-designed diagenetic simulation system. The experimental materials are modern sediments from different sedimentary so...
Article
Full-text available
In order to analyze the factors influencing sandstone mechanical compaction and its physical property evolution during compaction processes, simulation experiments on sandstone mechanical compaction were carried out with a self-designed diagenetic simulation system. The experimental materials were modern sediments from different sources, and the ex...
Article
Full-text available
Deep-water gravity flows are one of the most important sediment transport mechanisms on Earth. After 60 years of study, significant achievements have been made in terms of classification schemes, genetic mechanisms, and depositional models of deep-water gravity flows. The research history of deep-water gravity flows can be divided into five stages:...
Article
Full-text available
Anomalously high porosity zone refers to a zone where reservoirs with anomalously high porosity concentrate, and the porosities are higher than the maximum porosity of reservoirs experienced normal compaction. Anomalously high porosity zones are desserts for oil and gas exploration in deep layers in sedimentary basins. Significant studies have been...
Article
Carbonates are suggested to dissolve rapidly than feldspars by laboratory experiments. Petrography texture of selective dissolution of feldspars in the presence of carbonates, however, is widespread in buried sandstones and even shales, inspiring a revisit to the chemistry of burial secondary pores.Feldspar dissolution, precipitation of secondary m...
Article
Full-text available
There are three abnormally high porosity zones developed in buried Paleogene nearshore subaqueous fan and sublacustrine fan clastic reservoirs at 2,800–3,200 m, 3,250–3,700 m and 3,900–4,400 m, respectively, within the Shengtuo area of the Dongying Sag. Here the porosity of reservoirs buried deeper than 4,000 m can still be greater than 20%. Invest...
Article
Methodologies have been developed for calculating cutoffs of reservoir intervals with production capacity (RIPC) and reservoir intervals with accumulation capacity (RIAC) according to the types of pore throat structures and dynamic force by using data from petrophysical analysis, production tests and mercury injection. The data are from clastic res...
Article
Full-text available
This study focused on the beach-bar sandstone reservoir in the upper part of the fourth member of Shahejie formation in the southern slope of Dongying sag. Core, thin sections, physical properties and other technical methods were used to analyze the characteristics and genesis of effective reservoirs. The results show that the reservoir pore space...
Article
Full-text available
Feldspar dissolution is an important diagenetic event in the diagenesis of Es4-middle part of Es3 clastic reservoirs in the northern slope zone of the Dongying sag. Secondary dissolved pores of feldspar grains are almost ubiquitous in clastic reservoirs, however, microscopic investigations indicate that the stronger the feldspar dissolution, the ri...
Article
Full-text available
In the diagenetic process of clastic reservoirs, organic matters in source rock can release large amounts of organic acids during the thermal evolution process. The hypothesis that these organic acids can strongly corrode aluminum silicate minerals and carbonate minerals to create secondary pores of certain scale is prevalent in petroleum geologist...
Article
Full-text available
Different types of anomalously high-porosity zones have different genetic mechanisms and require different exploration philosophy. According to relative content of primary pores versus secondary pores in reservoirs, anomalously high porosity zones can be divided into primary anomalously high porosity zone with content of primary pores more than 50%...

Questions

Questions (2)
Question
Dear all, 
 I want to do some modeling analysis on the mass transfer between sandstone and mudstone. Did anyone have the same experience, and which software is qualified for this task.
Many thanks.
Question
As we all know, there are cross bedding Tc in Boum sequence. What's the difference between cross bedding form by turbidity current and  tractive current?

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Projects

Projects (4)
Project
There has been intense debate for long history on synergetic diagenetic evolution and mass transfer between interbedded sandstones and mudstones (Curtis, 1978; Burley et al., 1985; Land et al., 1997; Bjørlykke, 2014). Isochemical researchers believe that there is a relative closed geochemical systems in sediments with burial depth more than 2000 m, and mass transfer between sandstone and adjacent mudstone are impossible (Bjørkum and Gjelsvik 1988; Bjørlykke, 2014). On the contrary, allochemical researchers believe that mass transfer between sandstone and adjacent mudstone in deep burial sediment is possible and therefore controlling the reservoir quality (Land et al., 1997; Milliken, 2003). Interbedded deep-water gravity flow sandstones and mudstones provided a rare opportunity to test this controversy (Yang et al., 2018). The aim of the project is to better understand the following topics: 1) Investigate the composition and types of diagenesis of the interbedded sandstone and mudstones. 2) Clarify the synergetic diagenetic evolution processes of the interbedded sandstone and mudstones. 3) Evaluate the chemical changes and mass transfer of the interbedded sandstone and mudstones constrained by provenance and geochemical weathering analysis. 4) Establishing a diagenetic source and sink framework to forecast the high quality deep-burial reservoirs. Hope we can give some new answers to this traditional question based on the lacustrine basin case studying.
Project
In the past few years, great achievements have been made in sediment gravity flow evolution processes researches in the marine basin (Talling et al., 2015). Research works related to supercritical turbidity currents (Postma and Cartigny, 2014) and hybrid gravity flow (Haughton et al., 2003, 2009; Talling et al., 2004, 2007) made this area one of the most charming topic of sedimentology. However, taking the difference between marine and lacustrine basin into consideration, whether the flow types, origin and distribution patterns related to sediment gravity flow based on marine basin deposits hold for sediment gravity flow deposits in lacustrine basins remains unknown (Fongngern et al., 2018; Dodd et al., 2018; Yang et al., 2018). Therefore, the aim of the project is to better understand the following topics: 1) Types of sediment gravity flows and their depositional recognition criteria in different types of lacustrine basin. 2) Origin and evolution processes of sediment gravity flow events in different types of lacustrine basin. 3) Factors that control the evolution and distribution pattern of sediment gravity flow deposits in different types of lacustrine basin. 4) Establishing a depositional model of sediment gravity flow deposits in different types of lacustrine basin. Hope we can make the sediment gravity flow deposits in lacustrine basin clear and figure out the difference of those between marine and lacustrine basin through five to ten years of systematic works.
Project
decipher the pathways, evolution and linkage of organic reactions and inorganic reactions in sandstone reservoirs and their significance on oil and reservoir quality.