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  • Open Access

    ARTICLE

    Estimated Ultimate Recovery and Productivity of Deep Shale Gas Horizontal Wells

    Haijie Zhang1, Haifeng Zhao2, Ming Jiang3,*, Junwei Pu1, Yuanping Luo1, Weiming Chen1, Tongtong Luo1,4, Zhiqiang Li5, Xinan Yu6

    FDMP-Fluid Dynamics & Materials Processing, Vol.21, No.1, pp. 221-232, 2025, DOI:10.32604/fdmp.2024.053496 - 24 January 2025

    Abstract Pressure control in deep shale gas horizontal wells can reduce the stress sensitivity of hydraulic fractures and improve the estimated ultimate recovery (EUR). In this study, a hydraulic fracture stress sensitivity model is proposed to characterize the effect of pressure drop rate on fracture permeability. Furthermore, a production prediction model is introduced accounting for a non-uniform hydraulic fracture conductivity distribution. The results reveal that increasing the fracture conductivity leads to a rapid daily production increase in the early stages. However, above 0.50 D·cm, a further increase in the fracture conductivity has a limited effect on More >

  • Open Access

    ARTICLE

    Bacterial Inoculation and Co-Inoculation Improves Durum Wheat Productivity in Alkaline Calcareous Soils

    Bouazza Chami1,2, Nabil Touzout2, Souad Guemouri-Athmani1, Djamel Baali-Cherif3, Adil Mihoub4, Jakub Černý5,*, Muhammad Farhan Saeed6, Aftab Jamal7,*, Hayi Mohamed Yassine8, Yaser Hassan Dewir9, Aurelio Scavo10

    Phyton-International Journal of Experimental Botany, Vol.93, No.12, pp. 3313-3329, 2024, DOI:10.32604/phyton.2024.059865 - 31 December 2024

    Abstract Intensive agricultural practices have undeniably reduced soil fertility and crop productivity. Furthermore, alkaline calcareous soils represent a significant challenge for agricultural production, particularly durum wheat, which is vital for ensuring food security. It is therefore essential to explore new cereal management strategies to maintain food production and promote crop sustainability. The application of soil microorganisms, particularly plant growth–promoting rhizobacteria (PGPR), as inoculants to enhance crop production is a growing area of interest. This study investigates the effects of the rhizobacteria Paenibacillus polymyxa SGH1 and SGK2, applied both individually and in combination, on the growth and… More >

  • Open Access

    ARTICLE

    Assessment of Carboniferous Volcanic Horizontal Wells after Fracturing Based on Gray Correlation, Hierarchical Analysis and Fuzzy Evaluation

    Junwei Han1, Guohua Li1, Wu Zhong1, Yuchen Yang1, Maoheng Li2,3, Zhiwei Chen2,3, Ruichang Ge2,3, Lijuan Huang2,3,*

    FDMP-Fluid Dynamics & Materials Processing, Vol.20, No.12, pp. 2757-2773, 2024, DOI:10.32604/fdmp.2024.056130 - 23 December 2024

    Abstract A comprehensive method to evaluate the factors affecting the production capacity of horizontal wells in Carboniferous volcanic rocks after fracturing is investigated. A systematic approach combining gray correlation analysis, hierarchical analysis and fuzzy evaluation is proposed. In particular, first the incidence of reservoir properties and fracturing parameters on production capacity is assessed. These parameters include reservoir base geological parameters (porosity, permeability, oil saturation, waterproof height) as well as engineering parameters (fracture half-length, fracture height, fracture conductivity, fracture distance). Afterwards, a two-by-two comparison judgment matrix of sensitive parameters is constructed by means of hierarchical analysis, and More >

  • Open Access

    ARTICLE

    A New Framework for Vegetation Productivity Dynamics Assessment in Patagonia: Rangeland Functional Archetypes

    Mario Eugenio Sello1,*, Rafael Adrian Maddio1, Santiago Ignacio Hurtado1, Daniel Alejandro Castillo1, Daiana Vanesa Perri1, Octavio Agusto Bruzzone2, Marcos Horacio Easdale1

    Phyton-International Journal of Experimental Botany, Vol.93, No.9, pp. 2479-2498, 2024, DOI:10.32604/phyton.2024.053168 - 30 September 2024

    Abstract Adaptive management in arid and semi-arid regions of Patagonia, Argentina, requires a thorough understanding of vegetative dynamics, which can be obtained via rangeland assessment and monitoring. These practices are essential for decision-making to prevent environmental degradation, especially in the light of drought aggravated by climate change. In turn, most methods used to evaluate rangelands focus on data obtained from field measurements and vegetation classifications based on remote sensing data. One of the most frequent problems is that field-based rangeland assessments, based on field measurements, turn out to be expensive because they require high efforts in… More >

  • Open Access

    ARTICLE

    High-Precision Flow Numerical Simulation and Productivity Evaluation of Shale Oil Considering Stress Sensitivity

    Mingjing Lu1,2,*, Qin Qian1, Anhai Zhong1, Feng Yang1, Wenjun He1, Min Li1

    FDMP-Fluid Dynamics & Materials Processing, Vol.20, No.10, pp. 2281-2300, 2024, DOI:10.32604/fdmp.2024.051594 - 23 September 2024

    Abstract Continental shale oil reservoirs, characterized by numerous bedding planes and micro-nano scale pores, feature significantly higher stress sensitivity compared to other types of reservoirs. However, research on suitable stress sensitivity characterization models is still limited. In this study, three commonly used stress sensitivity models for shale oil reservoirs were considered, and experiments on representative core samples were conducted. By fitting and comparing the data, the “exponential model” was identified as a characterization model that accurately represents stress sensitivity in continental shale oil reservoirs. To validate the accuracy of the model, a two-phase seepage mathematical model More >

  • Open Access

    ARTICLE

    Combined Application of Biostimulants and EDTA Improved Wheat Productivity under Cadmium Stress

    Abida Aziz1, Shafiqa Bano1, Mubshar Hussain2, Muhammad Farooq Azhar3, Ghulam Yasin3, Naila Hadayat4, Iqra Arooj5, Abeer Hashem6, Ajay Kumar7, Elsayed Fathi Abd_Allah8, Qamar uz Zaman9,10,*

    Phyton-International Journal of Experimental Botany, Vol.93, No.7, pp. 1647-1665, 2024, DOI:10.32604/phyton.2024.050974 - 30 July 2024

    Abstract Wheat (Triticum aestivum L.) exhibits a greater capacity for cadmium (Cd) absorption compared to other cereal crops, leading to elevated daily Cd intake, and posing a significant threat to public health. For the mitigation of Cd stress in sustainable and environmentally friendly way, a pot study was designed by using exogenous application of various biostimulants, i.e., Nigella sativa and Ocimum sanctum extracts: 0%, 10%, and 20% in combination with the chelating agent ethylenediaminetetraacetic acid (EDTA) using 0 and 5 mg kg under various levels of Cd stress (i.e., 0, 5, 10, and 15 mg kg soil). Results revealed… More > Graphic Abstract

    Combined Application of Biostimulants and EDTA Improved Wheat Productivity under Cadmium Stress

  • Open Access

    ARTICLE

    Optimizing Sorghum Productivity Using Balanced Fertilizers on Dryland

    Samijan Samijan, Endah Nurwahyuni, Sri Minarsih*, Agus Supriyo, Sodiq Jauhari, Yulis Hindarwati, Meinarti Norma Setiapermas, Raden Heru Praptana, Endah Winarni, Vina Eka Aristya

    Phyton-International Journal of Experimental Botany, Vol.93, No.7, pp. 1403-1420, 2024, DOI:10.32604/phyton.2024.048339 - 30 July 2024

    Abstract Sorghum is the fifth most required cereal crop globally. Sorghum bicolor has the advantage of being adaptive to both lowland and dryland, with drought-tolerant and wide adaptability. The low nutrient availability in dryland requires additional effective fertilizers to increase sorghum productivity. The research aimed to assess the application of organic, inorganic, and biofertilizers for sorghum productivity on dryland. Research in Central Java, Indonesia as dryland sorghum areas, from November 2022 to February 2023. The experiment cooperates with the farmers in a split-plot design, the main plot was two varieties and subplots of four fertilizers. The enhanced… More >

  • Open Access

    ARTICLE

    Experimental Study on Improving Performance and Productivity of Pyramid Solar Still Using Rotation Technique

    Ali Abdullah Abbas Baiee, Sasan Asiaei*, Sayed Mostafa Hosseinalipour*

    Frontiers in Heat and Mass Transfer, Vol.22, No.3, pp. 955-976, 2024, DOI:10.32604/fhmt.2024.051532 - 11 July 2024

    Abstract Globally, potable water scarcity is pervasive problem. The solar distillation device is a straightforward apparatus that has been purposefully engineered to convert non-potable water into potable water. The experimental study is distinctive due to the implementation of a rotational mechanism within the pyramidal solar still (PSS), which serves to enhance the evaporation and condensation processes. The objective of this research study is to examine the impact of integrating rotational motion into pyramidal solar stills on various processes: water distillation, evaporation, condensation, heat transfer, and energy waste reduction, shadow effects, and low water temperature in saline… More >

  • Open Access

    ARTICLE

    A Well Productivity Model for Multi-Layered Marine and Continental Transitional Reservoirs with Complex Fracture Networks

    Huiyan Zhao1, Xuezhong Chen1, Zhijian Hu2,*, Man Chen1, Bo Xiong3, Jianying Yang1

    FDMP-Fluid Dynamics & Materials Processing, Vol.20, No.6, pp. 1313-1330, 2024, DOI:10.32604/fdmp.2024.048840 - 27 June 2024

    Abstract Using the typical characteristics of multi-layered marine and continental transitional gas reservoirs as a basis, a model is developed to predict the related well production rate. This model relies on the fractal theory of tortuous capillary bundles and can take into account multiple gas flow mechanisms at the micrometer and nanometer scales, as well as the flow characteristics in different types of thin layers (tight sandstone gas, shale gas, and coalbed gas). Moreover, a source-sink function concept and a pressure drop superposition principle are utilized to introduce a coupled flow model in the reservoir. A… More > Graphic Abstract

    A Well Productivity Model for Multi-Layered Marine and Continental Transitional Reservoirs with Complex Fracture Networks

  • Open Access

    ARTICLE

    Sorghum Productivity and Its Farming Feasibility in Dryland Agriculture: Genotypic and Planting Distance Insights

    Kristamtini1, Sugeng Widodo2, Heni Purwaningsih3, Arlyna Budi Pustika1, Setyorini Widyayanti1, Arif Muazam1, Arini Putri Hanifa1,*, Joko Triastono2, Dewi Sahara2, Heni Sulistyawati Purwaning Rahayu2, Pandu Laksono2, Diah Arina Fahmi2, Sutardi1, Joko Pramono4, Rachmiwati Yusuf1

    Phyton-International Journal of Experimental Botany, Vol.93, No.5, pp. 1007-1021, 2024, DOI:10.32604/phyton.2024.048770 - 28 May 2024

    Abstract Sorghum (Sorghum bicolor L. Moench) is an essential food crop for more than 750 million people in tropical and sub-tropical dry climates of Africa, India, and Latin America. The domestic sorghum market in Indonesia is still limited to the eastern region (East Nusa Tenggara, West Nusa Tenggara, Java, and South Sulawesi). Therefore, it is crucial to carry out sorghum research on drylands. This research aimed to investigate the effect of sorghum genotype and planting distance and their interaction toward growth and sorghum’s productivity in the Gunungkidul dryland, Yogyakarta, Indonesia. In addition, the farm business analysis, including… More >

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