..., the permeability of the heated granite samples notably rises following LN 2 -cooling, accompanied by reductions in P- wave velocity, and strength, as evidence of internal thermal shock fracturing. As the initial temperature increases, these alterations in properties become more pronounced. In comparison between...

...Introduction Abstract Scope of the paper is to describe a methodology for the verification and control of the running shear fracture in offshore pipelines to be dedicated to CO2 transport. The objective is to avoid through thickness failures and running fracture which can be deleterious...

... flows through the rock matrix and any natural or induced fractures. This paper discusses a field study to determine the feasibility of recovering heat from the subsurface by water injection into a high permeability sandstone reservoir. The heat recovery rate is computed and the risks associated...

... In the current research, we analyse sandstone samples before and after the fracture develops using the multiscale pore network modelling approach. It is well known that the flow geometry of fractured media is different than that of the pore-throat-pore systems. Hence, the first objective...

... increases pore pressure above the initial value and this may trigger unwanted geomechanical effects such as fault reactivation or microseismicity. Additionally, the caprock overlaying the aquifer must be able to withstand the expected pressure increase without fracturing. While previous work has explored...

... Abstract Designed and occasionally induced fracturing occur during injection and production operations in petroleum, geothermal energy, and geological CO 2 storage. Although the goals and perspectives vary across industries, fracture monitoring and control remains crucial. Induced fracturing...

... Abstract Fractured carbonate formations composed of chalk and limestone rock lithologies develop several issues over time, reducing fractures’ conductivity. One such issue is the embedment of the proppant that happens due to the soft nature of the carbonate rocks. Reduction of fractures...

... Abstract Hydraulic fracturing has long been an established well stimulation technique in the oil & gas industry, unlocking hydrocarbon reserves in tight and unconventional reservoirs. The two types of hydraulic fracturing are proppant fracturing and acid fracturing. Recently, a new...

... Abstract Finite element simulations investigate the effect of cement sheath length and proximity to perforations, varying the spacing of these and their length. The motivation is to assess the well integrity risk in fracturing operations, typical in shale gas or tight sandstone stimulation...

... management. upstream oil & gas reserves evaluation geology geologist optimization problem reservoir neural network austria government deep learning europe government reservoir surveillance machine learning fracture vector constraint artificial intelligence production control...

... Abstract This paper presents the results of numerical simulations of hydraulic fracturing in the immediate vicinity of the wellbore. This research aims to identify the primary mechanisms underlying the complexities in both the fracture morphology and propagation of longitudinal fractures...

... Abstract Many geo-energy related applications involve predicting the behavior of fluid flow in fractured subsurface reservoirs. Naturally fractured carbonate reservoirs are particularly important for being a major source of the world's hydrocarbon production. These reservoirs are also currently...

... Abstract In this study we developed mathematical model for thermo-hydro-mechanical process occurs within the geothermal reservoir with variable rock/fracture/fluid parameters. The influence of fracture network on the cold plume movement, pore pressure, changes in the rock/fracture effective...

... in coming decades in response to cleaner energy initiatives. Underground gas storage (UGS) will be key to addressing short term supply and demand dynamics during this energy transition. This paper presents a study on the XiangGuoSi (XGS) fractured carbonate, gas reservoir onshore China which had been...

... to 91 m, with tighter cluster spacing. Fracturing was temporarily plugged to passively treat sever deformation in two laterals consisting of 29 stages (total length of 2068m). Compared with the neighboring offset wells, the average bulk linear flow parameter of these eight well is 72% higher...

... Efficient development of tight reservoirs often relies on complex-hydraulic-fracture-network. Due to the time repeated iteration for simulation, the (semi)-analytical model or fully-numerical model often requires a trade-off especially for the accuracy of flow behavior and production analysis...

...physical model & assumptions Fig. 1 shows the physical model of the NFCF model. The induced fracture will close twice during the shut-in period. Figure 1 Physical model of the NFCF model The following conditions are assumed. The reservoir is isothermal and isotropic...

... that liquid nitrogen freezing reduced coal sample strength in a remarkable manner, which is, a positive indicator for fracture creation and permeability enhancement. The sample with no liquid nitrogen needs more strength to be crushed compared with all other samples. Moreover, sample strength deteriorates...

... stimulation. In order to evaluate the potential benefit of propped fracture stimulation for this type of reservoir, a history match of a real geothermal injection and production doublet was made using an industry standard 3D reservoir simulation model. This model was then used to perform production...

... magnitude reservoir netherlands non-reservoir side seismicity critical stress ratio earthquake co2 injection fracture Introduction Abstract CO2 injection into depleted gas fields involves long term cooling of the reservoir. Therefore, even if injection pressure is relatively small...