...Youjie Xu; Xiang Zuping; Mengnan Yu Summary Vertical hydraulic fracturing is widely used to develop low-permeability gas reservoirs. Uneven distribution of formation permeability and stress leads to multiple-wing hydraulic fractures with different lengths, which results in the wellbore not being...

... diffusion coefficient regime iteration reservoir geomechanics artificial intelligence spe reservoir evaluation derivative hydraulic fracture history-matching workflow modeling & simulation canada government workflow clarkson permeability hamdi geological subdiscipline fracture numerical...

...D. Zeinabady; C. R. Clarkson; S. Razzaghi; S. Haqparast; A. L. Benson; M. Azad Summary The existence of faults, pre-existing hydraulic fractures, and depleted areas can negatively impact the development of unconventional reservoirs using multifractured horizontal wells (MFHWs). For example...

...Yilin Liu; Guozhong Gao Summary The complex fracture network from hydraulic fracturing can significantly improve oilwell productivity, so it is widely used in the field of unconventional reservoir development. However, accurate evaluation of the fracture spatial distribution remains a challenge...

...Yanrui Ning; Ge Jin; Xiaoyu Zhu; Ali Tura Summary Well interference directly impacts well spacing optimization and well economics, thus it has received significant attention. Observed in many unconventional reservoirs, well interference is mainly attributed to connection of hydraulic fractures. Few...

... and hydraulically fractured later near existing producing laterals. This creates challenges in terms of optimizing resource recovery and reducing interwell communication. A novel approach is proposed that utilizes systematic composite sampling and analysis of drilling mud returns to look for and quantitatively...

...Yixuan Zhu; Timothy Carr Summary Hydraulic fracturing is critical for extracting shale gas in the subsurface. The treatment technique of multistage hydraulic fracturing is widely used to maximize production. In multistage hydraulic fracturing, not all pumping stages make the same contribution...

...Lang Zhan; Adenike Tokan-Lawal; Phillip Fair; Robert Dombrowski; Xin Liu; Veronica Almarza; Alejandro Martin Girardi; Zhen Li; Robert Li; Martin Pilko; Noah Joost Summary Hydraulic fractures play a central role in the performance of multistage fractured horizontal wells (MFHWs) in tight and shale...

..., manipulating block permeabilities in simulators can conveniently control the fluid flow through fractures. Complex dynamic behaviors of hydraulic fractures and natural fractures can be investigated using this method. The proposed methodology is implemented in a commercial reservoir simulator in a nonintrusive...

... , enhanced recovery Upstream Oil & Gas natural fracture hydraulic fracturing Engineering Modeling & Simulation huff reservoir simulation puff molecular diffusion hydraulic fracture complex natural fracture tight oil reservoir SPE Reservoir Evaluation co 2 diffusion coefficient...

... on the generation of the interwell fracture network are analyzed and quantified. An in-house modeling package capable of reservoir simulation, reservoir-geomechanics modeling, and hydraulic-fracturing modeling was introduced for this analysis. The reservoir models used in this study are based on a shale oil...

..., stimulated horizontal producer to sample the physical characteristics of the reservoir stimulation caused by hydraulic fracturing in the Eagle Ford Formation in DeWitt County, Texas. The design, execution, and results of the pilot are described. This pilot establishes the paucity of pre-existing natural...

...Ruud Weijermars; Arnaud van Harmelen; Lihua Zuo; Ibere Nascentes Alves; Wei Yu Summary The flow toward hydraulic fractures is visualized at high resolution using a newly developed analytical streamline simulator that is based on complex potentials. Drainage contours show progressive fluid recovery...

...Shanshan Yao; Xiangzeng Wang; Qingwang Yuan; Fanhua Zeng Summary Production from multistage-fractured horizontal wells (MFHWs) in shale reservoirs causes stress changes that further influence the conductivities of hydraulic fractures. Moreover, many shale rocks are strongly anisotropic...

... boundaries and the interface between reservoir regions discretized appropriately. With the collocation procedure, the solution is distilled to a system of algebraic equations that is solved for the reservoir's transient response. The hydraulic fractures need not be regular (equidistant and/or isometric...

...Zhiming Chen; Xinwei Liao; Xiaoliang Zhao Summary Forecasting coalbed-methane well performance in the Qinshui Basin is a key task for predicting future gas production. There is evidence suggesting that complex fracture geometry and multiple hydraulic‐fracture networks might develop. Unfortunately...

... on production curves are analyzed, including Langmuir volume, Langmuir pressure, hydraulic-fracture width, hydraulic-fracture permeability, natural-fracture permeability, matrix permeability, diffusion coefficient, stress-sensitivity coefficient, and the shape of the SRV. The model presented here can be used...

... stress variations on short-term and long-term productivity by taking into account several phenomena, such as stress-dependent matrix and natural-fracture permeability as well as reduction in hydraulic-fracture conductivity caused by proppant crushing, deformation, embedment, and fracture-face creep...

...Yongzan Liu; Juliana Y. Leung; Rick Chalaturnyk Summary Uneven proppant distribution is often encountered in hydraulic fracturing. Despite propped and unpropped fractures exhibiting different closure behavior during shut-in and early-flowback periods as a result of changes in effective stress...

..., because of the complex fracture networks and gas/water two-phase flow. In this study, we develop an efficient semianalytical model to predict gas and water production in CBM reservoirs with multiscale fracture networks. The activated large-scale or interconnected cleats and hydraulic fractures are modeled...