... 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...

... strategy or pumping schedule. The simultaneous fracturing model has been developed as an enhancement to the existing complex fracture model describing propagation of a hydraulic fracture in conventional and unconventional formations with the capability to simulate simultaneous pumping operations...

... 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: 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...

... data coupling method was developed. Using the "geology-engineering" coupling platform, the geological modeling software Petrel, and the high-precision numerical simulation software AiFrac were integrated. Then, the AiFrac-TOUGH numerical simulation program was used to perform hydraulic fracturing...

... ABSTRACT: We present a laboratory setup to test the energy budget of underground heat storage in an otherwise impermeable rock through engineered fractures, a so-called Fracture Thermal Energy Storage (FTES) system. A hydraulic fracture is first created in a cubic specimen of Zimbabwe Gabbro...

... ABSTRACT: The deep coalbed methane (CBM) is a prominent area for the exploration and development of unconventional gas resources. However, there is insufficient propagation of hydraulic fractures within the coal-mudstone interbed, resulting in the restricted stimulated volume. The impacts...

... and hydraulic fracturing have become a key strategy in the development of shale oil reservoirs since the combination of parent and infill wells can help to improve the estimated ultimate recovery (Lindsay et al. 2018). Infill wells are often drilled and completed later than parent wells, and the pressure...

... ABSTRACT: The primary mechanisms to initiate hydraulic fractures in rock include overcoming the tensile resistance of the rock, overcoming its shear resistance, or a combination of both. The focus of this study is the solid-liquid interaction in hydraulic fractures using basic measurements...

... discontinuity method (DDM) and Eulerian-Eulerian framework (E-E), which considers perforation erosion, dynamic flow rate distributions in wellbore, fracturing fluid leak-off, stress interactions, proppant settling, and proppant bridging. The numerical results show that most hydraulic fractures propagate...

... in both directions for potential hydraulic fracturing initiation (longitudinal and transverse) due to cooldown. Such stress alteration is largely dependent on the duration of cooldown. Furthermore, the thermally induced stresses diminish with the increased waiting (warmup) time before hydraulic fracturing...

... ABSTRACT: The use of non-API proppant in hydraulic fracturing has the potential to significantly reduce the cost of hydraulic fracturing operations. However, the influence of particle angularity on proppant transport in rough fractures is not well understood. This work utilises direct...

... ABSTRACT: To investigate the impact of surface roughness on proppant crushing and its effect on fracture conductivity in Shale Gas Formations, laboratory conductivity experiments were performed on standard core columns drilled along hydraulic fractures. The morphology of proppants within...

... ABSTRACT: Coal seam mining poses serious safety risks due to roof ground pressure. Hydraulic fracturing effectively mitigates this threat. This study focuses on understanding the mechanical characteristics of fracturing and softening the roof. We obtain sandstone roof cores through downhole...

... ABSTRACT: This study investigates experimentally hydraulic fracture propagation, arrest and closure in permeable rocks. Through a controlled laboratory experiment on a Molasse sandstone block under a true triaxial state of stress, hydraulic fracture propagation and closure was monitored via...

... ABSTRACT: Reliable prediction and uncertainty quantification of hydraulic fracture propagation behavior are crucial aspects of unconventional reservoir development, however, their implementations are largely restricted by the huge computational cost of the high-fidelity model simulations. We...

.... The proposed modeling considers the hydraulic fracture infinite and crosses the whole reservoir net pay. A new permeability stress-sensitive pseudo-pressure m ( σ′ ) is presented, and the solution of the NHDE is derived in terms of this function. NHDE is expanded in a first-order asymptotic series...

... tests and further investigated with mesoscopic fluid dynamics – microscopic solid mechanics coupling simulations. In this work, two field-scale porous media fluid flow models, consisting of rock matrix, randomly distributed microfractures and a major hydraulic fracture, are developed to evaluate...

... ABSTRACT: Hydraulic fracturing nucleates fractures along the orientation of maximum stress in the normal plane to the borehole. Meanwhile, standard hydraulic fracturing cannot nucleate several fractures in different directions from a borehole and achieve permeability enhancement in another...

... ABSTRACT: Hydraulic fracturing is an important stimulation technology to achieve high and stable production in deep and ultra-deep reservoirs. However, there are currently numerous complex technical problems, such as high breakdown pressure, single fracture and uncontrollable. To addressing...