...Zhipeng Wang; Zhengfu Ning; Wenting Guo; Weinan Lu; Fangtao Lyu; Gen Liu Summary Waterflooding will induce the opening and extension of fractures, which will create some water flow channels. Due to fracture multiclosures, the obtained fracture half-length from conventional finite-conductivity...

...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...

...Brenda Azuara Diliegros; Roberto Aguilera Summary This paper examines the buildup (BU) pressure response of a vertical well that penetrates an unconventional tight naturally fractured carbonate reservoir in Mexico. Four BUs in the same well over a period of 4 months, with intermediate flow periods...

...Manuel Gomes Correia; Gonçalo Oliveira; Denis José Schiozer Summary The significant quantities of oil contained in fractured karst reservoirs in Brazilian presalt fields add new challenges to the development of upscaling procedures to reduce time on numerical simulations. This work aims...

...Zhipeng Wang; Zhengfu Ning; Jie Zhan; Wenting Guo Summary Waterflooding will open natural fractures to form induced fractures, which differ from hydraulic fractures because the hydraulic fracture is filled with proppant but the induced fracture is not. Natural fractures are connected...

... 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...

...Bing Wei; Runxue Mao; Qintao Tian; Wenhai Lei; Jun Lu; Jinyu Tang Summary Preformed particle gel (PPG) holds promising potential for conformance control in fractured tight reservoirs as it enables mitigation of fracture channeling with insignificant leak off to matrix. However, conventional PPG...

...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...

...Zhipeng Wang; Zhengfu Ning; Wenting Guo; Qidi Cheng Summary It is well known that waterflooding will create fractures. The created fractures are divided into hydraulic fractures (artificial fractures with proppant) and induced fractures (formed during waterflooding without proppant...

...D. Zeinabady; C. R. Clarkson Summary The post-fracture pressure decay (PFPD) technique is a low-cost method allowing for stage-by-stage hydraulic fracture characterization. The analysis of the PFPD data is complex, with data affected by both hydraulic fracture and reservoir properties. Available...

... united states government mexico government flow in porous media porosity carbonate equation grainstone canada government fracture porosity exponent microfracture log analysis spe reservoir evaluation saturation engineering upstream oil & gas well logging permeability lucia...

...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...

... Creek Unit (CCU). Natural fractures are a key feature of many production wells, but stimulation by induced hydraulic fractures is not consistently successful. We hypothesize that more effective production in this play will rely on better fundamental characterization, especially on better quantification...

...Mun-Hong Hui; Bradley Mallison; Sunil Thomas; Pierre Muron; Matthieu Rousset; Evan Earnest; Ted Playton; Hai Vo; Clair Jensen Summary Natural fracture systems comprise numerous small features and relatively few large ones. At field scale, it is impractical to treat all fractures explicitly. We...

... of flow regimes observed for each test (flow/buildup, F/BU) period; (b) extract estimates of reservoir permeability and hydraulic fracture properties; and (c) study the evolution of these properties with each subsequent test. An MFHW, the Amungee NW-1H, completed in the Velkerri B shale in Australia...

...Alejandra Gutierrez Oseguera; Roberto Aguilera Summary The Chicontepec paleochannel contains unconventional tight oil shaly sandstone reservoirs also characterized by natural fractures of tectonic origin. Chicontepec ranks as a giant reservoir with volumes of original oil in place (OOIP) ranging...

...Sait I. Ozkaya Summary Most oil reservoirs are partially fractured, characterized by finite fracture networks (FFNs) in a sea of isolated fractures. It is necessary to determine size and shape of each FFN explicitly for reservoir simulation. FFN size is correlated with fracture connectivity, which...

... of viscous fluid at high injection pressures almost inevitably induces fractures. Induced fractures are not necessarily negative for the flood, and they are documented to improve injectivity and reduce shear degradation of polymer. The big question is on their effect on areal and vertical sweep efficiency...

... and secondary recovery. Capillary and viscous forces are responsible for this amount of oil retained within the pore structure of the matrix (immobile oil). Gravitational forces are not enough to counterattack these forces due to the high fracturing intensity. On the other hand, laboratory testing demonstrates...

...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...