.... The numerical analysis results of the PTT experiment showed that the hydromechanical model simulated linear pore pressure changes in s semi-log plot, as predicted by Eq. (34). If experimental results are available, the permeability of the shale sample can be determined by pressure matching to the type curves...

... for unsteady-state core-flooding experiments conducted at reservoir conditions (35 MPa/5076 psi and 150° C). Pre- and post-flooding core characterization was carried out using Nuclear Magnetic Resonance (NMR), X-Ray CT-imaging and porosity-permeability measurement to examine any petrophysical alteration...

... rock mass models using CT scan data and importing them into numerical analysis software for corresponding loading, fracturing, and permeability simulations. 4.2 Laboratory Experimental Analysis of Rock Permeability Characteristics Laboratory experiments analyzing the permeability characteristics...

... ABSTRACT: This study explores the transition from fluid infiltration to hydraulic fracturing in weakly cemented sandstones, which is critical for various geo-energy applications. Fluid flow experiments were conducted on artificially generated specimens with controlled mechanical and hydraulic...

... that of mudstone. 3. TURE TRIAXIAL FRACTURING EXPERIMENT HYDRAULIC 3.1. Experimental apparatus The true triaxial fracturing experimental device utilized in this study was independently developed by China University of Petroleum (Beijing), as depicted in Fig. 7. The confining pressure loading of this experimental...

... radial stress apparatus experiment International Geomechanics Conference (IGS) ARMA-IGS-2024 835 Experimental Investigation of Shrinkage/Expansion of Oil-well Cement Jihong Lian1, Yingtao Feng2, Zhi Yang1, Youwei Wang2, Xiangang Lu1, Hao Zhang2, Wei Xiao2, Kaikai Xu3, Wei Liu3 1CNOOC International...

... similar to real field operations. Following the experiment, the fractured cube was saturated with fluorescent materials to distinguish the fracture network from the rock matrix and provide common spatial references for a modified serial-sectioning and photographing method using ultraviolet light...

... pump adopts the constant pressure mode to keep the confining pressure stable. 2.2. Experimental Scheme Due to the great difference between the laboratory scale and the field scale, the laboratory experiments could not achieve the corresponding fracture propagation mode only by using the same fracturing...

... dynamic equipment The physical simulation experiment of hydraulic fracturing adopts a large-scale true triaxial fracturing simulation experimental system (Hou et al.,2022). Simulating the opening, steering and propagation morphology of hydraulic fractures in the wellbore, the OFDR system monitors...

... water. Thus, like most ultrasonic experiments, the experimental conditions of this simulation are more suitable for using frequencydependent (partially relaxed) moduli. Fig. 1. Cross section of the idealized geometry of compliant and stiff pores (Murphy et al., 1986). A stiff pore is toroidal...

... hydraulic fracturing canada government rock mechanic mining science deformation ijrmm cavern sandstone zhang sustainable development evolution strength salt cavern geological subdiscipline cyclic loading international journal effect experiment Abstract The expanding global...

... and the significant difference in movement speeds between polymer molecules and water molecules. 3.2. Experimental scheme The experiment employed a low-viscosity polymer-based fracturing fluid with a viscosity of 15.3 mm²/s. Two constant-speed constant-pressure pumps were used, with the dual-cylinder pump applying...

... proportional coefficient and elastic modulus Moreover, analyzing the experimental data from the literature12, it also shows that a strong linear relation is appreciated, as depicted in Fig. 5. However, it is not difficult to see that there is some difference between the numerical results and experiments...

.... EXPERIMENTAL SETUP 3.1. Triaxial Frame The focus of this study is the monitoring of P and S wave velocities using laboratory tests. We utilize Metarock's triaxial frame, which includes a high-pressure vessel, ultrasonic sensors, temperature control, and fluid injection systems (Figure 3A). The specimen...

... true of shear and permeability experiments realized on fault gouge materials (Scuderi & Collettini 2018; Orellana et al., 2018; Cappa et al., 2019). However direct-shear experimental set-ups are less adapted to shear-parallel permeability measurements, and as shown by published experimental results...

... to simulate the methane desorption process by gradually reducing the pressure (0.5 MPa at a time), and different pressure drops and gas desorption times were designed to achieve different desorption rates. The experimental scheme of gas desorption is shown in Table 2. Re-adsorption experiment: Wait until...

... reflectance (OFDR) in detail. Then, combined with large-scale true triaxial fracturing physical simulation equipment, the laboratory experiments of fracture monitoring of concrete samples were carried out with bare optical fibre. The experimental results show that OFDR optical fibre sensing technology can...

... of nonuniform stresses and premature fractures. To avoid these artifacts in experimental data, the blocks were cast in a precisely machined steel mold with 1-in. (25.4 mm) wall thickness (Fig. 8). 3. EXPERIMENTAL STUDY Hydraulic fracturing experiments in this study were conducted using a large, true-triaxial...

...-X is calculated, and the impact of drilling fluid invasion on the collapse pressure is quantitatively evaluated. This study can provide a theoretical basis for deep coal seam drilling and coalbed methane development. 2 EXPERIMENT 2.1 Experimental conditions (1) Temperature and pressure The deep...

... a laboratory hydraulic fracture experiments performed in sandstones with the aim to study experimentally fracture closure. In our experimental set-up, an extensive passive acoustic monitoring is performed and provide un-precedented spatio-temporal evolution of fracture development and closure. Introduction...