... 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...

...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...

...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...

...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...

... fracture porosity carbonate equation grainstone packstone spe reservoir evaluation saturation engineering rfn fracture porosity exponent microfracture correspond Fig. 5 Porosity and permeability relationship for various particle size groups in uniform cemented nonvuggy rocks...

...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...

...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...

... 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...

... 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...

... 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...

...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...

...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...

...Jongsoo Hwang; Shuang Zheng; Mukul Sharma; Maria-Magdalena Chiotoroiu; Torsten Clemens Summary Reservoir cooling by water or wastewater injection can significantly change the stress in the target injection zones and the bounding layers. Out-of-zone fracture growth is substantially affected...

...Kildare George Ramos Gurjao; Eduardo Gildin; Richard Gibson; Mark Everett Summary The use of fiber optics in reservoir surveillance is bringing valuable insights into fracture geometry and fracture-hit identification, stage communication, and perforation cluster fluid distribution in many hydraulic...

...Ziming Xu; Juliana Y. Leung Summary The discrete fracture network (DFN) model is widely used to simulate and represent the complex fractures occurring over multiple length scales. However, computational constraints often necessitate that these DFN models be upscaled into a dual-porosity dual...

...S. McKean; S. Poirier; H. Galvis-Portilla; M. Venieri; J. A. Priest; J. Dettmer; P. Pedersen; D. Eaton Summary The Duvernay Formation is an unconventional reservoir characterized by induced seismicity and fluid migration, with natural fractures likely contributing to both cases. An alpine outcrop...

...Mohammed Y. Ali; Fateh Bouchaala; Youcef Bouzidi; Eric M. Takam Takougang; Aala A. I. Mohamed; Akmal Sultan Summary Volumetric maximum curvature attribute computed from 3D ocean bottom cable (OBC) seismic data, production logging tool (PLT), inorganic chemical tracer data, and fractures observed...

...Yongzan Liu; Kan Wu; Ge Jin; George Moridis; Erich Kerr; Reid Scofield; Andrew Johnson Summary Low-frequency distributed acoustic sensing (LF-DAS) data are a powerful attribute to detect fracture hits and characterize fracture geometry during multistage hydraulic fracturing treatments...

...Hossein Ahmadi; Christopher R. Clarkson; Hamidreza Hamdi; Hamid Behmanesh Summary Reduction of fracture/well spacing and increases in hydraulic fracture stimulation treatment size are popular strategies for improving hydrocarbon recovery from multifractured horizontal wells (MFHWs). However...