Renchao Yang

Renchao Yang
Shandong University of Science and Technology · Department of Geology

Ph.D

About

82
Publications
17,487
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
1,026
Citations
Citations since 2016
56 Research Items
950 Citations
2016201720182019202020212022050100150200
2016201720182019202020212022050100150200
2016201720182019202020212022050100150200
2016201720182019202020212022050100150200
Additional affiliations
January 2018 - December 2023
Shandong University of Science and Technology
Position
  • Professor (Full)

Publications

Publications (82)
Article
Full-text available
Microbial lumps have been found in the Maozhuang Stage (Cambrian Series 2) in the Liangcheng section, Shandong Province, China. Their macro- and micro-scale features distinguish them from other carbonate particles such as intraclasts and oncoids. Most lumps have a coarse sand to pebble size. They were mostly rounded during sedimentation or combined...
Article
Full-text available
It is becoming an important controlling factor of gas exploration and exploitation in the east part of Sulige gas field in the Ordos Basin where the reservoir of main gas formations is tight sandstones. Employing experimental methods of slice identification, casting slice, scan electron microscope, and X-ray diffractions, we studied the characteris...
Article
Full-text available
Synthetic methods of thin section petrography, scanning electron microscope, electron microprobe, energy spectrum analysis, cathodoluminescence, isotopic analysis and temperature measuring for fluid inclusions were used in analyzing sandstone samples collected from the Zhiluo Formation in order to fully understand the diagenesis evolution and the m...
Article
Given sustaining exploration, the eastern zone of the Sulige gas field may soon become a key area of exploitation. In order to explore its genesis, types and distribution of the reservoir sandstones in the eastern zone of this gas field, we focused in our study on the provenance and detailed sedimentary facies of sandstone of the He8 (the eighth pa...
Article
Full-text available
Ribbon rocks are characterized by an alternation of millimeter- to centimeter-thick limestone and argillaceous deposits (marlstone or shale). The sedimentary processes and diagenetic characteristics of ribbon rocks might be critical to the formation of limestone conglomerates. According to detailed field measurement and laboratory analyses (thin se...
Article
Full-text available
An integrated study based on field observation, petrography, and scanning electron microscopy (SEM) on the Early–Middle Eocene carbonate rocks has been carried out, which were deposited in the Ceno-Tethys Ocean. The study area of the Yadgaar Section lies on the eastern margin of the Upper Indus Basin, Pakistan. The Early–Middle Eocene Margalla Hill...
Article
Full-text available
An integrated study based on petrography, SEM and XRD analysis has been carried out for petrofacies and diagenesis of the Lockhart Limestone in the Upper Indus Basin, Pakistan to decipher the paleo-environmental history during the mature development of the Ceno-Tethys Ocean. The Thanetian Lockhart Limestone has been divided into three petrofacies r...
Poster
Full-text available
Sedimentology and Diagenesis of the Early–Middle Eocene Carbonate Deposits of the Ceno-Tethys Ocean
Article
The division of geological time is of general interest as this allows a better understanding of the geological processes and Earth's evolutionary history. Astrochronology provides a way to evaluate high-resolution time scales of Earth's climate changes. Astronomical tuning of orbitally forced stratigraphic records to construct astronomical-calibrat...
Article
The prediction of sandstone distribution is the main target for hydrocarbon exploration and petroleum reservoir engineering, especially in a rift basin with a complex geological setting. During the Middle Eocene, the Dongying and Yong'an deltas converged in the Dongying Depression of the Bohai Bay Basin, eastern China. So far, studies on the contro...
Article
Eocene organic-rich shales in the Dongying Depression, Eastern China, are well preserved and ideal for examining stratigraphic controls on the variations of organic matter (OM). This study concerns the Eocene sedimentary succession in the Dongying Depression and recognizes a third-order sequence based on the stacking patterns of lithofacies, minera...
Article
Full-text available
In this paper, the depositional environment, age, and tectonic context of the Sub-Himalayan Kuldana Formation are discussed in detail. To determine the Kuldana Formation’s depositional environment, age, and tectonic setting, sedimentological, palaeontological, and petrographic investigations have been conducted accordingly. The Kuldana Formation li...
Article
The Campano-Maastrichtian deposits of the Nkporo and Mamu formations of the Anambra Basin represent prospective hydrocarbon resources in southern Nigeria. In order to reveal the paleoclimate, sediment recycling and paleoenvironment during the deposition of these formations in the southwestern portion of the Anambra Basin, a detailed geochemical ana...
Article
The characteristics of diagenetic minerals and their effects on reservoir quality of the tight sandstones of the Permian in Sulige gas field of the Ordos Basin were studied through observations on thin sections, scanning electron microscopy, energy dispersive spectroscopy analysis and electron microprobe analysis. Diagenetic minerals in the Permian...
Article
The middle interval of the 3rd member of the Shahejie Formation (Es3m) of the Dongying Depression accumulated as part of a system of converging deltas derived from multiple source regions. These complex deposits that are targets of oil/gas exploration and development in eastern China have yet to be studied at the level of detail necessary to elucid...
Article
The Lower Shihezi Formation, situated in the south of the Chinese Ordos Basin, is a tight sandstone reservoir that is generally influenced by its sedimentary facies and diagenesis, corresponding to distinct petrophysical reservoir properties for each lithofacies type. The existing lithofacies types within the Lower Shihezi Formation were determined...
Chapter
Cores and geophysical well logs of the Middle-Late Triassic Yanchang Fm. in the Ordos Basin (central China) were analyzed for the facies distribution, with special attention to fine-grained mass-flow deposits. Both stratified and unstratified mudstones are present; eight types of mudstones can be distinguished on the basis of texture and sedimentar...
Chapter
One of the most important topics still to be clarified regarding the sedimentology of the Yanchang Formation in the Ordos Basin is the occurrence of hyperpycnites. The present contribution shows convincingly that hyperpycnites are well developed in Oil Member 7 of the formation. They extend from distributary estuaries into the deep lake and have in...
Chapter
The successive stages of compaction- and lithification-induced porosity reduction (densification) and hydrocarbon accumulation have been investigated in a tight sandstone reservoir in the Permian Sulige Gas Field in central China. Thin-section analysis, scanning electron microscopy, X-ray diffraction, cathodoluminescence, fluid-inclusion analysis,...
Chapter
The Late Triassic Ordos Basin was covered by a lake with deep parts where fine-grained sediments accumulated, constituting the Yanchang Formation. This autochthonous sedimentation was frequently interrupted by gravity-induced mass flows. These were sometimes so rich in water that they must have represented slurries, as can be deduced from the soft-...
Chapter
Research into transport and deposition mechanisms of fine-grained mass-flow deposits is hampered by the absence of an easily applicable classification scheme. We propose here such a scheme on the basis of the mud content in combination with the presumed transport mechanism. The scheme comprises 12 types of gravity-flow deposits. The practical appli...
Chapter
The Ordos Basin, situated in the western part of the North China Block, has a long history that started in the Mesoproterozoic and extends to the Quaternary. It started as a marine basin, but was transformed into an intracratonic (largely lacustrine) basin when plates had collided during the Triassic. During the Carboniferous and Permian, but also...
Chapter
The North China Plate changed from diverging to converging toward the South China Plate along its southern and western margins during the Middle to Late Ordovician. Due to this reversal of direction, the sedimentary facies in the Ordos Basin along these margins changed from carbonate platforms in an epeiric sea to deep-sea slopes and a deep-sea bas...
Article
The Anambra Basin, formed on the western part of the lower Benue Trough, is one of Nigeria's most petroliferous provinces. The subsurface structure has been extensively studied using various geophysical methods except for the mapping of structural lineaments. In the present study, a satellite-derived World gravity map 2012 global gravity model is u...
Article
During the Upper Paleozoic large-scale tight sandstone oil and gas reservoirs developed in the southern Ordos Basin of China. Due to the heterogeneity of sedimentary facies and diagenesis, the reservoir quality of these deposits is extremely uneven. Based on field profile observations, conventional thin section, cast thin section and scanning elect...
Article
Labuan Island represents the emergent part of a north-eastward plunging anticline. The stratigraphic succession at Labuan is made up of four formations: the Crocker Formation, the Temburong Formation, the Setap shale Formation and the Belait Formation. The sedimentological aspects of the Labuan stratigraphic succession have been studied by several...
Article
The sedimentary characteristics and petrophysical properties of the reservoir of the second/lower member of the Lower Permian Shanxi Formation (P1s2) in Sulige Gas Field, Central China are studied by means of thin section petrography and scanning electron microscopy. This article highlights the relationship between reservoir quality and sedimentary...
Article
The occurrence and enrichment of organic matter (OM) are influenced by the deposition of minerals in shale reservoirs. However, inadequate research has been published on the origin, spatial relationships, and significance of organic matter–mineral associations (OMMA) for predicting “sweet spots” in shale gas reservoirs. We describe OMMA in the Wufe...
Article
In the purview of groundwater pollution, a rational exploitation, utilization, protection, and risk assessment of groundwater has become an important means of groundwater management and pollution prevention. Xiashan Economic Zone of Weifang City which is located in the central region of the Shandong Peninsula, China, has been chosen to investigate...
Article
The Wangjiazhuang porphyry copper (-molybdenum) deposit is located at Zouping volcanic basin in Shandong Province, East China and hosted in the Wangjiazhuang intrusive complex emplaced along a late volcanic conduit. There are two types of ores in this deposit: early disseminated and stockwork ores in the ore-bearing intrusion, and late massive sulf...
Article
Pebbles up to 10 cm in diameter, as the main clastic component of gas reservoirs in the Permian Sulige Gas Field, deposited more than 150 km away from their northward provenance (Yinshan Mountains) in the northern Ordos Basin. The transportation and depositional mechanisms of these pebbles have been unclear for decades. Based on core examinations,...
Article
Longstanding debates on the tectonic setting and provenance of the Lower Cretaceous Lingshandao Formation have hindered basin analysis and tectonic studies of the collision of the Yangtze Craton and the North China Craton, and thus the evolution of the Sulu Orogen. Thin-section analysis, identification of rock particles, cathodoluminescence, heavy...
Conference Paper
Full-text available
Hyperpycnal flow is a kind of sustained turbidity currents generating from flood-river estuary, flowing along the bottom of water for its higher density than catchment basins water. It has frequent occurrences and stable sediments supplies, which are triggered by river floods. Hyperpycnal flow is controlled by factors of topography, climate and den...
Article
During the Middle to Late Ordovician, the Sino-Korean Plate changed its movement from diverging to converging along its southern and western margins. This resulted in shifts of the sedimentary facies in the Ordos Basin: the environment changed from carbonate platforms in an epeiric sea to deep-sea slopes and a deep-sea basin. This had more than reg...
Article
Full-text available
In his comment on our paper about the hyperpycnites in the Triassic Yanchang Formation, G. Shanmugam puts forward that hyperpycnites do not exist. Consequently, he considers our interpretation that hyperpycnal flows are an important depositional process in the Yanchang Formation to be invalid. We unravel his arguments and demonstrate that evidence...
Article
Tight sandstone gas reservoirs constitute an important type of unconventional gas resources and may be of crucial significance as environment-friendly source of energy in the world. However, the dynamics of densification and evolution of the low-porosity and low-permeability sandstone reservoirs are intensively debated in literature. Recently, the...
Conference Paper
Ever more sedimentological research focuses on the transport and depositional processes of fine-grained sediments, and more specifically of fine-grained gravity-flow deposits. The main reason is the ongoing exploration for shale oil and gas. Whereas the exploration for hydrocarbons was directed for a century towards sediments with a high porosity a...
Conference Paper
Chemical parameters are increasingly used to determine depositional conditions of ancient deposits, and to help interpret the depositional environment. The conclusions based on such chemical parameters can, however, be incorrect if no additional field checks are carried out. An example is the way in which the continental or marine character of sedi...
Conference Paper
Ever more sedimentological research focuses on the transport and depositional processes of fine-grained sediments, and more specifically of fine-grained gravity-flow deposits. The main reason is the ongoing exploration for shale oil and gas. Whereas the exploration for hydrocarbons was directed for a century towards sediments with a high porosity a...
Conference Paper
Chemical parameters are increasingly used to determine depositional conditions of ancient deposits, and to help interpret the depositional environment. The conclusions based on such chemical parameters can, however, be incorrect if no additional field checks are carried out. An example is the way in which the continental or marine character of sedi...
Article
Interpretation of the continental or marine character of sediments on the basis of the paleosalinity is increasingly based on the concentration of some trace elements. The paleosalinity can be affected, however, also in deep-marine environments, by discharge peaks of major sediment-laden rivers. These induce hyperpycnal flows that run down the basi...
Article
The Junggar Basin is one of the most important basins for hydrocarbon production in China. Within the basin, the Chunfeng Oilfield forms one of the most important oilfields of the area. Despite the significant work that has been done on the rocks of the oilfield so far, a detailed reservoir characterization and description of the hydrocarbon accumu...
Article
With deepening research on the development ofshale oil and gas development and related fields, transportation and deposition of fine-grained sediments have been a significant area of research in the stratigraphic community. However, muddy gravity-flow deposits in theMesozoic lacustrine environment in China have received little attentions. Based on...
Article
Fine-grained sediments from the Late Triassic Yanchang Fm. in the Ordos Basin (central China) were studied by core analysis and geophysical logging. Part of the mudstones in this formation are stratified, part of them are unstratified; the various mudstones can be subdivided into eight types on the basis of their structures and textures. They repre...
Article
Full-text available
Fine-grained sediments from the Late Triassic Yanchang Fm. in the Ordos Basin (central China) were studied by core analysis and geophysical logging. Part of the mudstones in this formation are stratified, part of them are unstratified; the various mudstones can be subdivided into eight types on the basis of their structures and textures. They repre...
Article
Full-text available
The Triassic Yanchang Formation contains the main oil-bearing strata in the Ordos Basin, central China. But the sedimentology of the Upper Triassic is still under debate, and flood-generated, hyperpycnal-flow deposits and their implications for unconventional petroleum development have long been overlooked. Our study indicates that hyperpycnites ar...
Article
Fine-grained sediments from the Late Triassic Yanchang Fm. in the Ordos Basin (central China) were studied by core analysis and geophysical logging. Part of the mudstones in this formation are stratified, part of them are unstratified; the various mudstones can be subdivided into eight types on the basis of their structures and textures. They repre...
Article
Full-text available
The fine-grained autochthonous sedimentation in the deep part of a Late Triassic lake was frequently interrupted by gravity-induced mass flows. Some of these mass flows were so rich in water that they must have represented slurries. This can be deduced from the soft-sediment deformation structures that abound in cores from these lacustrine deposits...
Article
Full-text available
Based on the analysis of numerous drill cores and drilling data, lacustrine gravity flow depositional systems were analyzed comprehensively in the Chang6 and Chang7 oil members (Triassic Yanchang Formation) in the southern part of the Ordos Basin. The gravity flow depositional systems in these members are made up of slides, slumps, sandy debris flo...
Article
In order to determine the genesis and the factors that control the low-porosity and low-permeability sandstone reservoirs in the eastern Sulige Gas Field in the Ordos Basin, systematic studies on the sedimentary facies and diagenesis were conducted by means of analysis of cores, thin sections, fluid inclusions, X-ray diffraction, cathode luminescen...
Article
Full-text available
The compacted rocks in the sandstone reservoirs are the main factor restricting the gas exploration and development in the eastern block of the Sulige Gas Field. In view of this, based on the core observation, such analysis methods as thin layer chromatography, scanning electron microscope, etc. are adopted to analyze the reservoirs in the 8 th mem...
Article
Full-text available
Sulige gas field in Ordos Basin is the largest discovered gas field in China. But tight sandstone reservoirs is becoming the main limitation of natural gas exploration and exploi