Aiping Fan's research while affiliated with Shandong University of Science and Technology and other places

Publications (41)

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...
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
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 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...
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 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 question of whether authigenic chlorite coatings of quartz grains in sandstone reservoirs can prevent precipitation of a quartz cement, thus diminishing the porosity and permeability—and thus reducing the reservoir potential—has been, and still is, the subject of much debate. Chlorite coatings are commonly believed to prevent quartz overgrowth,...
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-...
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
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
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,...
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
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
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
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
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
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
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
The provenance of the lower Es2 in the Shanghe area was determined from an approach incorporating analysis, elemental ratios, paleocurrent direction, the typomorphic characteristics of detritus and the distribution of conglomerate and gritstone in the peripheral basin. Typical elemental ratios characteristic of the sedimentary area were compared wi...
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
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...

Citations

... These rock formations include Lockhart Limestone of Late-Paleocene, Margalla Hill Limestone, and Chorgali Formations of Early-Middle Eocene, as well as Kuldana Formation of Middle Eocene-Early Oligocene age. A petrological study of the Late Paleocene Lockhart Limestone reveals its depositional environment as a shallow shelf carbonate platform, typically from the platform margin to the toe of the slope and slope areas [9]. This study indicated that shallow marine platform carbonates were deposited in the final phase of transgression-regression events during the Early-Middle Eocene age. ...
... The differences in particle composition, particle size, and matrix content of each facies lead to differences in reservoir physical properties for different facies [62,63]. Sandstones of the Jiucaiyuan Formation are mainly distributed in the braided channel above lake level, braided channel under lake level, natural levee above lake level, mouth bar, and beach bar, whereas fine-grained mudstone is mainly distributed in the floodplain, interdistributary bays, and prodelta mud deposits. ...
... Considering that As is included in the silicate network in both type of ash, the observed trend could be explained by the higher lability of mafic ash during weathering. The mafic rock fragments released Fe 2+ and Mg 2+ when it dissolved, while felsic fragments are commonly more difficult to dissolve, so that they were preserved during the early diagenetic stage (Wang et al., 2022). ...
... The composition of the clastic particles significantly affects the physical properties of the reservoir [59]. Quartz has a robust anti-compaction ability, and can protect pore spaces during compaction [60]. ...
... The Ordos Basin is the second largest sedimentary basin in China (Fig. 1a), with abundant resources of petroleum, natural gas, coalbed methane and coal (Fan et al., 2019). The Sulige gas field, located in the northwestern part of the Ordos Basin, is a typical tight sandstone gas reservoir with low permeability, low pressure and low abundance. ...
... Ordos Basin, with a total area of 32 × 104 km 2 , is located to the west of the North China Platform in China, and at the junction of the eastern stability zone and the western active zone. It is the second largest sedimentary basin in China Yang et al., 2019). According to its geological evolution history and structural characteristics, the basin can be divided into six primary structural units: Yimeng Uplift, Weibei Uplift, Jinxi Flexfold Belt, Shaanbei Slope, Tianhuan Depression, and the thrust belt on the western edge (Zou et al., 2012;Liao et al., 2013;Li et al., 2016) ( Figure 1A). ...
... It is known that echinoids are mostly stenohaline animals that poorly tolerate salinity fluctuations (e.g., Russell 2013). It is possible that less saline waters could be introduced by hyperpycnal flows (Yang et al. 2018), but again the animal should then burrow more deeply where the pore water should be more saline. Inflow of hypersaline waters may be considered as well, but the expected reaction of the animal should be the same as in the former case. ...
... These two lithologies represent higher energy, proximal deposition, (2) Low-density turbidity current deposits (Fig. 21), which are shale and siltstone of lithofacies (B), fine-grained sandstone lamina that typically show increased evidence for a tractional process such as planar lamination and current ripples (Lowe 1982). Low-density gravity flow is more common in a distal setting, as recorded in the OCT-F3B well (Fig. 21A), so they can form interbeds with high-density turbidity flow and are considered to form an evolutionary continuum (e.g., Ghibaudo 1992;Haughton et al. 2009;Tian et al. 2015;Fan et al. 2018;Yang et al. 2020;Fonnesu et al. 2020). ...
... Stromatolite (Figure 5f), benthic faunas (Figure 5g), patch coral reefs (Figure 5h), ooid shoals and algal mounds are present throughout the basin. The commonly preserved mud cracks (Yang, 1997), bird ' s-eye structures (Fei & Zhang, 2002) and vertical burrows (Chen, 2011) clearly indicate tidal flat to proximal ramp settings (Yang et al., 2019). The uncompacted accumulation rate of the Majiagou Formation, which is much more rapid than that of the underlying strata, reaches a maximum of ca. ...
... Diagenesis has been regarded as the controlling factor of reservoir densification [40][41][42][43][44][45][46][47][48][49]. Based on comprehensive analyses through petrographic observation, SEM analysis, cathodoluminescence imaging, XRD analysis, and EPMA, the Upper Paleozoic in the southwestern Ordos Basin has undergone compaction, cementation, metasomatism, dissolution, and fracturing [50], of which compaction and cementation are important factors to form a dense reservoir in the study area [51][52][53][54][55]. ...