..., but there are technical challenges preventing its large-scale use as an energy carrier. Underground geologic storage of hydrogen in porous media (aquifers and hydrocarbon reservoirs) could offer substantial storage capacity at low cost as well as buffer capacity to meet changing seasonal electricity demands or possible...

...Kai Wang; Mingliang Luo; Mingzhong Li; Shaofei Kang; Xu Li; Chunsheng Pu; Jing Liu Summary Hydrolyzed polyacrylamide/chromium III [HPAM/Cr (III)]-acetate gel treatment is an effective way for conformance control and water shutoff in various mature reservoirs around the world. However, it encounters...

...José E. Parra; Fernando Samaniego-V; Larry W. Lake Summary We investigated the application and usefulness of the producer-based representation of the capacitance resistance model (CRM) to characterize single and multiwell undersaturated oil reservoirs during primary recovery. The CRM is a physics...

...Bing Wei; Qinzhi Li; Weipeng Yang; Yiwen Wang; Jun Lu; Jinyu Tang Summary Spontaneous imbibition can help to improve the oil recovery of unconventional reservoirs owing to the significant capillarity. Although the dependence of imbibition dynamics of surfactants on wettability and interfacial...

...Eric Dow; Michael Szulczewski; Abishek Kashinath; Savithru Jayasinghe; Usuf Middya; Ali Dogru Summary In this paper, we present a new approach for simulating reservoirs with tilted fluid contacts produced by hydrodynamics. The proposed method solves a nonlinear inverse problem to determine...

... can lead to reduced cost and longer sustainability of oil recovery, thus offering a subsequent reduction in produced water (PW) treatment and a reduced full-cycle carbon footprint. This innovative approach is subject to conditions experienced in the surface facilities, as well as in the reservoir...

...Yizhi Wu; Yiren Fan; Lianyun Cai; Zhou Fang; Chaoliu Li Summary With the development of high-angle/horizontal well technology, unconventional tight reservoirs with moderate/high resistivity have gradually become the focus of exploration and development. However, in moderate-high-resistance...

... Engineers reservoir enhanced recovery producer equation steam-assisted gravity drainage canada government permeability saturation upstream oil & gas modeling & simulation interface numerical simulation bitumen viscosity injection sagd thermal method butler permeability...

...Rencheng Dong; Faruk O. Alpak; Mary F. Wheeler Summary Faulted reservoirs are commonly modeled by corner-point grids (CPGs). Because the two-point flux approximation (TPFA) method is not consistent on non-K-orthogonal grids, multi-phase flow simulation using TPFA on CPGs may have significant...

...Mei He; Jiao Xue; Huan Wan; Yu Zhong; Longgang Zhou; Hanming Gu Summary Coal measure gas is a research hotspot in recent years. And yet the complexity of source-reservoir relationships and the ambiguity of the gas/water interface in coal measure reservoirs bring challenges to the traditional gas...

...Chuan-Jin Yao; Bai-Shuo Liu; Ya-Qian Liu; Jia Zhao; Zheng-Dong Lei; Zhe Wang; Tian-Xiang Cheng; Lei Li Summary Tight reservoirs are mainly developed by injecting various gases after fracturing. However, the formed fractures are complex, and different fracture conditions have an important impact...

... results from tests conducted on various oils at reservoir conditions and historical field data from different sources, the conclusion may be different from what has been assumed. For instance, CT tests performed on light oils, at elevated pressures, rarely display any significant sign of coke deposition...

... to control conformance problems for waterflooding projects. However, no research has been conducted about whether RPPG is feasible in improving gasflooding performance in mature reservoirs. The study presents a systematic evaluation of acrylamide (AM) and 2-acrylamide-2-methylpropane sulfonate acid (AMPS...

...Morteza Asemani; Ahmad Reza Rabbani; Hashem Sarafdokht Summary Reservoir compartmentalization is an essential phenomenon in the different life cycles of oilfield production. This concept is crucial for the economic assessment of field development plans because it influences future decisions...

... in their applicability. In this paper, a new analytical model is developed to address these shortcomings. The new model consists of three major components. First, an equation for predicting oil production rate during the plateau stage was developed. This equation allows for permeability anisotropy in the reservoir...

... fluid dynamics pore structure change void space well logging pore structure experiment slime fracture injection fractured sample reservoir lucaogou formation operation hnp experiment characterization unrecoverable oil sweeping efficiency formation nuclear magnetic resonance...

..., which in turn reduces oil mobility by reducing its relative permeability, and potentially reducing oil flow. The key input in any reservoir modeling to compare the competition between gas and liquid flow toward ICDs is the relative permeability of different phases. Pore-network modeling (PNM) has been...

... and data analysis including student and Pearson’s tests, stepwise regression, correlations, and other statistical approaches. Different methods were used to analyze carbonate cores from Elets reservoirs D3(el1) and D3(el3) located at Lambeyshorskoye field. The analysis has identified the core data scale...

...Xu Li; Xin Chen; Zhenhua Xu; Chunsheng Pu Summary Foam flooding is an effective enhanced oil recovery (EOR) technology and has been widely applied in conventional reservoirs. However, its application in fractured low-permeability reservoirs is rarely reported. Hence, this study has conducted...

... (XC), and two crosslinkers [N,N'-Methylenebisacrylamide (MBA), chromium acetate (Cr 3+ )] are selected to develop an USGel with potential for medium to ultralow temperature reservoir applications. The thermal stability and sealing performance of USGel are evaluated. The effect of component...