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Dynamics of One-Way Hydraulic Impact System with Two Piston Stop Tools
AbstractThe mathematical model of the one-way hydraulic positive-displacement system with two piston stop tools includes the design variables of the...
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BASIC PROPERTIES OF ONE-WAY ACTION HYDRAULIC PERCUSSION SYSTEM WITH TWO PISTON ARRESTERS
AbstractThe author presents the mathematical model of an autooscillating one-way action and positive-displacement system with two piston arresters....
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One-way coupling of E3SM with ADCIRC demonstrated on Hurricane Harvey
Tropical cyclones (TCs) represent a major threat to coastal communities and cause billions of dollars in economic damage yearly. Much of the TC...
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Optimization Design of Hydraulic Impactor for Oil and Gas Drilling
Due to the large depth, large diameter of oil and gas wells, and complex downhole conditions, to use of traditional hydraulic impactors in oil and...
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Comparison of saturated hydraulic conductivity estimated by empirical, hydraulic and numerical modeling methods at different scales in a coastal sand aquifer in Northern Ireland
Hydraulic conductivity is one of the most challenging hydrogeological properties to appropriately measure due to its dependence on the measurement...
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Quantifying heterogeneities of vertical hydraulic gradients in a highly urbanized effluent river system in the Darjeeling Sub Himalayan foothills, India
The vertical hydraulic gradient (VHG) caused by differences in water surface elevation between the river and minipiezometer is regarded as a crucial...
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An Experimental Investigation into Effects of Shale Hydration on Breakdown Pressure and the Fracture Characteristics During Hydraulic Fracture Initiation
Hydraulic fracturing promotes the shale gas revolution worldwide. Since most of the fracturing fluids used now are water-based, shale hydration could...
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Analysis of Hydraulic Permeability Enhancement Effect Based on an Experimental System of Highly Pressurized Water Invasion and Gas Seepage
To study the influence of various factors on coal permeability in the process of coal seam water injection and the relationship between water...
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Hydraulic Fracturing Induced Fault Reactivation
This chapter presents a case study of fault reactivation and induced seismicity during multi-stage hydraulic fracturing in Sichuan Basin, China. The...
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How Stress Barriers and Fracture Toughness Heterogeneities Arrest Buoyant Hydraulic Fractures
In our study, we investigated the impact of changes in Mode I fracture toughness and stress barriers on fully developed planar, buoyant hydraulic...
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Investigation of the load-carrying capacity of one-way hybrid fiber-reinforced concrete slabs
The purpose of the present work is to investigate, experimentally and numerically, the effects of the steel fibers (SF) and polypropylene fibers...
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Zonal Seepage in Coal Seams Generated by Hydraulic Fracturing Under Gas Pressure Attenuation: Characteristics and Affecting Factors
Hydraulic fracturing causes the fracture zone phenomenon in a coal seam. The effectiveness of coalbed methane (CBM) extraction is determined by the...
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Hydraulic Impactor Control Methods and Charts
AbstractThe authors discuss the approved advanced control charts for operational cycles of hydraulic impacting machines. These control charts allow...
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Impact of operational temperature changes and freeze–thaw cycles on the hydraulic conductivity of borehole heat exchangers
A large share of the primary energy is consumed to provide space heating. Geothermal energy offers a regenerative alternative. For reasons of...
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Research on Dynamic Characteristics of Friction and Drag Reduction of Hydraulic Clutch
Bending sliding steering technology and rotary steering technology are two existing directional drilling technologies. A common technique for...
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Acoustic Emission Evolution and Hydraulic Fracture Morphology of Changning Shale Stressed to Failure at Different Injection Rates in the Laboratory
Hydraulic fracturing has been widely used to enhance reservoir permeability during the extraction of shale gas. As one of the external input...
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Experimental investigations on laboratory samples regarding the connection of spectral induced polarization to heterogeneity of hydraulic conductivity
Knowledge of the heterogeneity of aquifers caused by sedimentary processes is essential for preferential flow path and flow time estimations due to...
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Field investigation of multi-stage pulse hydraulic fracturing for improving permeability of coal seam in directional long borehole in underground coal mines
Directional long borehole has been promoted in underground coal mines. However, the hydraulic fracturing technology based on directional long...
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Research on Intelligent Coupling Control Technology Between Caving Hydraulic Support and Surrounding Rock
Based on the interaction between hydraulic support and surrounding rock, this paper considers that the coupling relationship between hydraulic...
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Modeling Hydraulic Fracturing near Circular Underground Opening in Triaxial Compression
AbstractThe article describes the numerical studies on propagation of hydraulic fracture in the nonuniform-stress elastic environment around a...
