The use of geophysical logging data to identify lithology is an important groundwork in interpretation. Inevitably, noise mixed during collection due the equipment and other external factors this will affect further lithological identification Therefore, get a more accurate it necessary adopt de-noising methods. In study, new method, namely improved complete ensemble empirical mode decomposition with adaptive (CEEMDAN)–wavelet transform, proposed, which integrates superiorities CEEMDAN...

One of the challenges in evaluating and estimating gas storage migration coal has been investigation complex pore structures, especially nanoscale. The present study provides new insights into nanoscale types, genesis, classification, structure characteristics high-rank by investigating 10 anthracite coals Shanxi Formation Taiyuan Xinjing Coal Mine Qinshui Basin, North China. A series experiments that combined qualitative observation method argon ion polishing technology combination with...

The influence of high-rank coal’s pore characteristics on the physical properties, gas-bearing and exploitation coal reservoirs is becoming more prominent. How to establish classification describe networks combining quantitative qualitative has emerged as a major problem, which may offer scientific foundation deepen understanding this issue. In research, structure fractal reservoir pores were determined after analyzing 20 samples from Xinjing Coal Mine in Qinshui Basin with application...

Located in Dali, Yunnan, the Zhaozhou basin is home to many precious architectural heritages, particularly historical horse caravan architecture. These buildings face challenge of renewal and transformation. It great significance explore local population’s awareness heritage order protect facilitate rural revitalization. This study reviews related research on “space perception”, establishes a theoretical framework space perception under dimension, develops hypotheses. The social cluster...

The Youganwo Formation oil shale located in the Maoming Basin represents a large commercially valuable lacustrine resource and potential bio-shale gas reservoir South China. With aim of deepening understanding factors that influence organic matter enrichment, this research conducted geochemical investigation to reconstruct depositional paleoenvironment bioproductivity, preservation dilution. is mainly deposited semi-deep deep-lake environments with relatively warm humid paleoclimate...

The pore structure and fractal characteristics of the Lower Cambrian marine organic-rich shale in southern China were comprehensively studied using low-pressure [Formula: see text] adsorption organic geochemical experiments, X-ray diffraction, petrophysical property tests, scanning electron microscope observations. results indicate that total carbon (TOC) content study varies between 0.45% 8.50%, with an average value 3.97%. isotherm samples belongs to type IV, slit-type pores are...

Transitional upper carboniferous Shanxi Formation coal-bearing strata in Qinshui Basin have been proven to be a set of mixed unconventional gas-bearing reservoirs forming multi-superimposed gas system that consists multiple independent fluid pressure systems vertically through the strata. An experimental protocol was designed compare pore networks high-rank coal, shale, and tight sandstone from using quantitative qualitative methods, including high-pressure mercury injection porosimetry...

The relationship between the Late Ordovician–Early Silurian sedimentary system, weathering, paleoclimate, and primary productivity in Yangzi region is not well understood. In this study, by analyzing sedimentation cycle major trace elements of Youc 2 southeast Sichuan Basin, coupling relationships weathering indicators, terrigenous debris input redox condition U-Mo covariance model, Mo/TOC relationship, paleoproductivity indicators are investigated. results show that single-well logs...

The Chamdo Basin is a secondary basin in the eastern part of Tibet China and one most promising petroliferous basins for new petroleum exploration. Qamdo records complex burial history from Mesozoic to Cenozoic; however, poorly constrained sedimentology Cenozoic strata this has severely obscured overall profile impeded further explorations oil gas resources. Here, we conduct whole-rock geochemical analyses major, trace, rare earth elements fine-grained clastic rocks Paleocene Gongjue...

Cultural relics and historical sites serve as carriers of cultural, historical, artistic information. However, any damage incurred by these cultural can result in the loss information, consequently impacting sustainable conservation revitalization heritage. Han Dynasty stone reliefs are a representative carrier art history during Dynasty, an early stage Chinese history. Due to influence materials, carving techniques, protective measures, have been significantly restricted. In this study,...

For vibration signals, this paper proposes an ensemble classification method based on stochastic configuration networks (SCNs). Firstly, the time–frequency analysis methods are used to obtain frequency spectrum signal and images. The sample data in domain can characterize fault information from different perspectives. hybrid that consist of two domains build a SCN model. Moreover, SCNs is proposed solve problem, sub-classifiers built extract features training data. In experiment, bearing...

The Late Ordovician–Early Silurian period was a significant transitional phase in geological history and has garnered global interest. This study focuses on the black shale series of Wufeng Formation–Longmaxi Formation Upper Ordovician–Lower Sichuan Basin. Based logging curves lithological characteristics Yucan-1 Well, 46 samples were collected from target layer section for clay mineral XRD (46 samples) analysis whole-rock XRF (14 analysis. results indicate that three third-order sequences...

Using the tight sandstone of lower Permian Shanxi Formation in southern Qinshui Basin as an example, we have developed concept “geomechanical sweet spots” a strongly deformed strike-slip fault zone. The evaluation elements for geomechanical spots include current tectonics, paleotectonics, fractures, and rock brittleness. high-angle basement-surface faults that study area control formation development descending plane (upper plate) positive traction folds ascending (lower isopach folds....

Rural tourism is an important driving force for the transformation of rural society in process urbanization. However, besides promoting economy, it also interrupts development living, human, manage and economic multi-dimensional environments. Space reconstruction settlements means to optimize environments revitalize tourism. Focusing on two types settlements, namely “relocation village” “sightseeing settlement symbiosis village”, this study has revealed affecting mechanism space tourist...

Many uncertain factors exist in modeling shale gas well performance, such as selection of flow models, simulation hydraulic fracture, inclusion adsorbed gas. The purpose current study is to investigate the impact these on production. One multi-stage fractured horizontal Eagle Ford Basin modeled and done history matching. It founded that model multi dual-porosity, instant time-dependent sorption significant production forecasting, while approaches negative skin factor discrete fractures for...

As one of the important minerals in marine shale reservoirs, development characteristics pyrite can provide guidance for exploration deep gas resources and study high-quality reservoir mechanisms. In this study, samples Wufeng Longmaxi Formation southeast Chongqing area were selected, framboidal revealed through a combination qualitative quantitative method. High-quality reservoirs upper bottom are developed with smaller sizes, weaker variation narrower size distribution framboids compared...

The study of deep shale gas (>3500 m) has become a new research hotspot in the field China. In this study, 16 representative samples were selected from different layers Wufeng–Longmaxi Formation Z-3 well western Chongqing area to conduct low-field nuclear magnetic resonance (NMR) tests, field-emission scanning electron microscopy (FE-SEM) observation, and fractal modeling. By comparing differences pore structure their influencing factors layers, particularities high-quality reservoirs...

For industry image data, this paper proposes an classification method based on stochastic configuration networks and multi-scale feature extraction. The features are extracted from images of different scales using deep 2DSCN, the hidden multiple layers also connected together to obtain more informational features. integrated fed into SCNs learn a classifier which improves recognition rate for categories. In experiments, handwritten digit database hot-rolled steel strip used, comparison...

This work aims to explore the Lower Silurian shale gas and tight sandstone accumulation conditions in Gongtan Syncline, southeastern Sichuan Basin. The sedimentary environment, organic geochemical characteristics, reservoir content, preservation of were comprehensively analyzed. results show that Wufeng–Longmaxi Formation formed a deep-water shelf characterized by large thickness (50–70 m), appropriate total carbon content (0.5–5.47%), high maturity (2.38%), brittle mineral (67.10%),...

Geological anomalies within the working face likely induce geological disasters, such as water, gas, and coal mine roof fall, directly impacting rational planning safe mining of underground resources. Constrained by conditions closed spaces, effective reconstruction under incomplete highly sparse projection is central challenge when evaluating geo-environmental conditions. This work proposes a new hybrid intelligent optimization model (MPGA-SIRT) that integrates multiple-population genetic...