... process. Based on the equations of friction resistance, a calculation method of vacuum section is proposed. Through the analysis of the casing force, a mathematical model for simulating casing deformation and calculating parameters such as displacement is established. The model is validated with data from...

... schemes. Ugueto et al. used optical fiber temperature and acoustic monitoring technology to analyze the fracturing of multi-cluster fractures and found that effective liquid inlet clusters accounted for 50 % ~ 70 % of the total perforation clusters. He proposed that maintaining high perforation friction...

... materials magnitude fracture fracturing fluid reservoir characterization earthquake proppant experiment friction investigation hydraulic fracturing ceramic proppant earthquake magnitude earthquake potential obi fracture stability proc geomechanics symposium shear experiment analog...

... of vibration drag-reduction tools are closely related to the drag reduction efficiency. At present, the parameter design of vibration drag reduction is mainly based on field experience but lacks a set of effective theoretical methods. To solve this problem, the strong nonlinear effect of friction force...

... ABSTRACT: In the process of sliding drilling, installing oscillators on drill strings can decrease axial friction and increase wellbore extension effectively in sliding drilling. Traditionally, the positions of oscillators are most determined by drilling experience, which constraints the drag...

... design shale wellbore integrity experiment upstream oil & gas international journal symmetry axis undrained experiment perpendicularly overburden shale geomechanics symposium reservoir characterization friction outcrop shale orientation loading skempton literature norway ARMA 22...

... & gas modeling & simulation fracture simulator workflow soliman exhibition friction petrophysical analysis calibrate doi technical conference fracture characterization reservoir characterization exponent fracture simulation paper ARMA 22 0761 Integrating moving reference point...

... of the backfill mass may be exposed, and a risk of failure or instability due to gravity loading can occur if the backfill is not strong enough. strength friction operation tan backfill cohesion backfilled stope metals & mining interface calculation kpa reservoir characterization backwall...

... the efficiency of deep geothermal drilling. In this work, different types of nanomaterials such as graphene oxide, hybrid nano silica and their composite nanomaterials are used as additives in a water-based drilling fluid. The influence of additives on the rheological properties and the friction of the drilling...

...-Evans law. The evolution in solute concentration also affects the solvent pressure in the pores and cracks, altering the resistance to frictional sliding. Only steady-state propagation and periodic cracks are studied. An analytical solution of the crack spacing as a function of the properties...

... and hard/strong fracture surfaces – and calibrating using granular mechanics models (DEM), we conclude that the evolution of friction-permeability relationship of a propped shale fracture is largely controlled by the rock friction/rigidity. To be specific, propped hard/strong fractures show a continuous...

..., the jetting method is most mature and has been widely used in the Gulf of Mexico (GOM), West Africa, Southeast Asia, and South China Sea (Jeanjean, 2002; Mackenzie et al., 2012; Prasertamporn, 2016; Wei et al.,2019). In this paper, we focus on the jetting method. drilling equipment wellhead friction...

... Longmaxi shale gouges at high pressure and high temperature (HPHT) that probe the underlying mechanisms controlling injection-induced earthquakes. The frictional strength and stability properties of shale gouges were obtained via velocity-stepping experiments at a confining pressure of 60 MPa , pore...

... ABSTRACT: One of the parameters that govern the interaction between hydraulic fractures (HF) and natural fractures (NF) is the coefficient of friction between the two NF-surfaces (Gu and Weng, 2010). Therefore, the characterization of natural fractures is important when analyzing this type...

... dependence of fault slip: for the same amount of injected volume, lower injection rate builds up lower pore pressure, and triggers less slip and less seismic events. 1. Introduction Fault gouge is crushed and ground-up rock produced by friction between the two sides when a fault moves (Scholz, 2019...

... demonstrate three visible slip stages from static friction to unstable slip. Variable normal stress and its response to a sudden change in shear stress was observed from the acquired pulse data. Moreover, slowly stick-slip friction dominates the injection-induced shearing in the velocity of tens...

... reducer friction flow rate experiment side group 1. INTRODUCTION In recent decades, global economic development of unconventional oil and gas reservoirs has never stopped, and unconventional oil and gas reservoirs gradually become the backbone of oil and gas production since the emergence...

... engineering approach to mimic processes or parameters distributions are used. geothermal reservoir pore pressure candela injection-induced seismicity Reservoir Characterization fault roughness heterogeneity rupture event Upstream Oil & Gas friction normal stress Geophy seismicity...

... to the removal of asperities and redistribution of wear products, which locally reduces porosity in the dilating fracture. This study provides insights into the understanding of the mechanisms of frictional and rheological evolution of rough fractures anticipated during reactivation events. fracture...

... significant friction which leads to very high surface pressure, pushing the limit of surface pumping equipment. In addition, the ultra-high temperature disqualifies any conventional fluid system due to failure of maintaining desirable properties under high temperature. As counter measures the authors explored...