... ABSTRACT: A true tri-axial experiment was conducted to simulated hydraulic fracture propagating process with a 30 cm cubic block cement sample. At the same time, optic fiber in the cement sample recorded strain signals. In this paper, a fiber strain/strain rate calculation method based...

... ABSTRACT: The bedding interfaces with different cohesions usually exist in unconventional reservoirs. During reservoir stimulation, the slips induced by hydraulic fractures are related to the fracturing effects. In this paper, the rock specimens with cemented and uncemented bedding interfaces...

... ABSTRACT: Laboratory experiments involving the injection of fluids through rocks under well-controlled conditions can help better constrain the processes taking place at depth during CO2 geo-sequestration in porous reservoirs, or hydraulic fracturing of tight gas/geothermal reservoirs...

... ABSTRACT: It is difficult to maintain the conductivity of acid etched fractures in deep carbonate reservoirs. The instability mechanism of acid etched fractures is analyzed by mineral composition analysis, laser scanning before and after acid etched, and continuous strength measurement...

... proppant filled, and un-stimulated zone) distribution in deep coalbed methane reservoirs developed with fractured horizontal wells, composite pseudo-steady-state gas-water productivity equations are established. Subsequently, coupling this productivity equation with pressure propagation models considering...

... ABSTRACT: The evolution of elastic waves in heterogenous fractured rocks is studied based on numerical simulations. We use the discrete fracture network method to represent the distribution of a natural fracture system and employ the displacement discontinuity method to compute the propagation...

... the breakage into only two splitting and chipping mechanisms, which tend to depict fractures as linear or planar. To fill the research gap, therefore, we have introduced an innovative 3D breakage model that incorporates the actual shape of grains and all key breakage mechanisms, including splitting, chipping...

... ABSTRACT: Approximately 23% of US land operators have tried simultaneous pumping operations and reported on average more than 30% gain in efficiency. However, surface efficiency without comparable well performance is not useful—all simultaneous fracturing jobs demand compromise in completion...

... ABSTRACT: In the development of shale oil and gas, the tridimensional development model centered around factory drilling, horizontal wells, and hydraulic fracturing has been widely adopted. This development model inevitably triggers both positive and negative hydraulic fracturing interference...

... ABSTRACT: Surface detection of noble gas radionuclides (RN) is critical to identify underground nuclear explosions (UNEs). However, predicting RN gas migration in the subsurface following a UNE involves complex processes of gas migration through the rock matrix and fracture network, rock...

... ABSTRACT: The Yingxiongling shale oil reservoir in the Qaidam Basin poses unique challenges due to its high stress differentials, steep stress gradients, abundant limy dolomite content, strong heterogeneity, and underdeveloped natural fractures. This paper conducts a comprehensive geoscience...

... ABSTRACT: Recent analytic work (Peirce and Detournay, 2022a) has established the tip asymptotics for receding hydraulic fractures that close due to leak-off to the permeable rock. This asymptotic result enabled the development of rigorous numerical schemes to explore the recession dynamics...

... configuration. It is possible to create a fracture and then locate it aided by nondestructive evaluation methods and interpolations, after that, a production well can be drilled intercepting the fracture plane. Likewise, it is possible to drill the injector and producer wells at the beginning if fracture caging...

... ABSTRACT: Induced seismicity is a major unsolved challenge that stands in the way of harnessing geothermal energy to its fullest extent. To confront this problem, fracture caging was proposed; where pre-drilled boundary wells are placed around an injection zone to contain fluid and limit...

... ABSTRACT: The Cretaceous Baxigai Formation and the Shushanhe Formation in the Tarim Basin are fractured water-sensitive formation. Wellbore instability is frequent during the drilling process. It's urgent to clarify the mechanism of the fractured water-sensitive formation, and to guide...

..., in-situ stresses and material strength properties to established various regimes of gas-driven fracture growth. The model can be useful for a variety of applications such as dynamic well stimulations for unconventional oil/gas reservoirs and enhanced geothermal systems, subsurface compressed hydrogen...

... ABSTRACT: Shale oil reserves are abundant and are a key area for future oil development. The supercritical CO 2 (SC-CO 2 ) has the property of low viscosity, which can produce a complex fracture network in the reservoir under certain pressure and realize the commercial exploitation of shale...

... ABSTRACT: With the development of the carbonate reservoir in Tahe Oilfield, the main target has shifted from the "large fracture cavities" around the wellbore to the "small fracture cavities". The existing acid fracturing technology can no longer meet the connection needs of the new target...

... ABSTRACT: In a highly stressed environment, massive rock masses fail through stress fracturing, resulting in rock slabs or spalls that can detach from the excavation perimeter either progressively in a non-violent manner as spalling, or suddenly and violently in the form of strainbursting...

... multiparameter monitoring network to show that the stress perturbation affects the reactivation of similarly oriented pre-existing fractures. In our example, the stress perturbation caused by the fault zone prevents the reactivation of structures in the nearby interval, while similar structures are clearly...