State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation

Managing hydraulic fracturing-induced seismicity in the Duvernay shale: Triggering mechanisms, influencing factors, and practice-oriented mitigation strategies

Abstract This review provides a Duvernay-focused synthesis of hydraulic fracturing (HF)-induced seismicity, integrating geological datasets, case studies of significant events, coupled poroelastic simulations, and machine-learning-based factor ranking. While the three underlying...

Discrimination of Tight Sandstone Reservoir Effectiveness Based on Pore-Throat Functional Fractal Characterization and Three-Dimensional Pore-Network Connectivity Constraints

Tight sandstone reservoir effectiveness is governed not by pore volume alone, but by the storage and flow contributions of different pore-throat scales, their structural complexity, and their three-dimensional connectivity. This study investigates tight sandstones of the Benxi Fo...

Research Progresson Rapid Dissolution Technologyof Polymers for Offshore Oilfields

Abstract As global onshore oil and gas resources gradually become depleted, offshore oilfields are playing an increasingly critical role in energy supply. Polymer flooding represents a highly efficient chemical enhanced oil recovery technique in an offshore oil field, yet its off...

Preparation Method of Simulated Deep Sandstone Materials Based on Dual Equivalence of Principal Components and Mechanical Properties, and Quantitative Evaluation of Simulation Effectiveness

Intact deep sandstone cores are scarce, heterogeneous with poorly repeatable, limiting systematic laboratory studies of deep-rock mechanical behavior. This study selected dense sandstone recovered from 1050 m in the Pingdingshan mining area as the prototype system for the develop...

Research on Calculation Methods for Flow Distribution and Pressure Loss of Reaming-While-Drilling (RWD) Tools

As global oil and gas exploration advances into deep reservoirs, reaming-while-drilling (RWD) tools (hereinafter referred to as the reamer) are widely used to enlarge wellbores for unconventional well structures, prevent stuck pipe caused by formation shrinkage, and improve cemen...

Effect ofFracture Aperture and Water Saturation onthe In Situ Conversion of Tar-Rich Coal

Abstract With abundant coal resources globally, in situ conversion technology, an emerging unconventional energy development method, is a crucial pathway for achieving efficient and clean utilization of tar-rich coal. However, its application is challenged by the heterogeneity of...

SynergisticAdsorption and Photocatalysis over Ag2CO3/Coca-Cola-Modifiedg-C3N4 for Antibiotic Wastewater Treatment

Abstract Considering the limitations of traditional adsorption and standalone photocatalytic technologies, as well as the environmental hazards posed by antibiotics, a novel Ag2CO3/CCN S-scheme heterojunction was fabricated by coupling Ag2CO3 with Coca-Cola-modified g-C3N4 (desig...

Three-Dimensional Identification of In Situ and Migrated Organic Matter in Shale Based on Micro-CT

Accurate differentiation of in situ organic matter (IOM) from migrated organic matter (MOM) and their three-dimensional characterization are fundamental for understanding hydrocarbon generation, migration, and accumulation in shale reservoirs. However, conventional micro-computed...