Direct inversion of 3D seismic reservoir parameters based on dual learning networks
October 2025
Tight sandstone has become an important area in gas exploration. In this study, we propose a 3D seismic reservoir parameter inversion method for tight gas-bearing sandstone reservoirs using dual neural...
Deformation and failure evolution mechanism of inherently anisotropic sedimentary rocks under true-triaxial stress
October 2025
Understanding the mechanical behavior and failure characteristics of anisotropic sedimentary rocks under true-triaxial in-situ stress conditions is critical in understanding and mitigating damaging...
Experimental investigation of particle settling characteristics in narrow fractures with rough walls
October 2025
Particle settling in narrow rough fractures is a common but poorly understood phenomenon during hydraulic fracturing. This study first constructs a large slot with two rough surfaces to simulate rock...
Joint inversion with prestack waveform and spectral information for layered media
October 2025
Subsurface reservoirs commonly exhibit layered structures. Conventional amplitude variation with angle (AVA) inversion, which relies on the Zoeppritz equation and its approximations, often fails to...
Incremental dimensionality reduction for efficiently solving Bayesian inverse problems
October 2025
The inversion of large sparse matrices poses a major challenge in geophysics, particularly in Bayesian seismic inversion, significantly limiting computational efficiency and practical applicability...
Effects of different thermal insulated drill pipe deployment methods on wellbore temperature control in ultra-deep wells
October 2025
The exploitation of oil resources has now extended to ultra-deep formations, with depths even exceeding 10,000 m. During drilling operations, the bottomhole temperature (BHT) can surpass 240 °C. Under...
Evaluating hydraulic fracturing effectiveness based on the improved connection model of acoustic emission events
October 2025
Hydraulic fracturing techniques are commonly used to enhance the production of tight reservoirs. Generally, the effect of hydraulic fracturing can be appraised through hydraulic fracturing experiments...
A novel fusion of interpretable boosting algorithm and feature selection for predicting casing damage
October 2025
Casing damage resulting from sand production in unconsolidated sandstone reservoirs can significantly impact the average production of oil wells. However, the prediction task remains challenging due...
Microscopic accumulation mechanism of helium in shale gas: Insights from molecular simulation
October 2025
Shale gas in southern China is found to contain economically valuable helium (He), which is inconsistent with conventional perspective that hydrocarbon gases in shale would dilute He to sub-economic...
Insights into occurrence and distribution of pore water in gas shales: Comparison between thermogravimetry and water vapor sorption
October 2025
Connate water strongly restricts shale gas enrichment and production, and most artificially injected water is confined in shale pore networks owing to low water recovery during hydraulic fracturing,...
Lignin in oilfield application: Current trends and future perspectives
October 2025
With the depletion of shallow and mid-depth oil and gas resources, exploration and development have increasingly shifted toward deep and ultra-deep reservoirs. However, high bottom-hole temperatures...
A novel intermingled fractal model for predicting relative permeability in tight oil reservoirs considering microscopic pore geometry
October 2025
Accurately predicting relative permeability is an important issue in the research of multiphase flow in tight reservoirs. Existing predictive models typically rely on the capillary tube bundle model...
Flow characteristics of shale oil and their geological controls: A case study of the Lucaogou Formation in the Jimsar Sag, Junggar Basin
October 2025
The Lucaogou Formation in Jimsar has a significant development potential due to its massive shale oil resources. Nevertheless, the complex and heterogeneous lithology, coupled with unclear flow mechanisms,...
Thermal maturity effect on the microscopic pore structure and gas adsorption capacity of shale gas reservoirs: A review
October 2025
Organic matter (OM) is the primary gas occurrence carrier in shale reservoirs due to their abundant nanopores. To reveal the OM pore structure, adsorption capacity and evolution during thermal maturation,...
OFC
October 2025
TOC
October 2025
Performance evaluation of multilateral horizontal wells on flow characteristics and recovery efficiency based on coupled model
Available online 30 October 2025
The multi-branch horizontal wells can improve the reservoir dynamic flow profile, restrain water coning, enhance production and recovery efficiency due to large drainage area and low cost, and it is...
Fast beam migration capable of dealing with intersecting events
Available online 28 October 2025
Fast beam migration (FBM), characterized by its super-high efficiency in velocity model building, consists of three main steps: beam forming, beam propagation, and image forming. The super-high efficiency...
Fast algorithm of borehole correction library construction for multi-component array induction tool in deviated boreholes
Available online 28 October 2025
The construction of a borehole correction library for the multi-component array induction tool in deviated boreholes involves extensive 3D forward modeling and typically requires significant computational...
Grain Boundary Strength in Methane Hydrates
Available online 27 October 2025
Grain boundaries (GBs) in natural gas hydrates (NGHs) are ubiquitous crystal imperfection that undermine the stability of NGHs. In this study, we report the diverse cage structures and mechanical properties...
Mechanism and influencing factors of electroosmosis-driven residual water drainage in soft coal seams during coalbed methane recovery
Available online 25 October 2025
Soft coal seams with low porosity are prone to water-blocking during mid to late stages of coalbed methane production, reducing gas recovery. To address this, an electroosmosis-driven drainage strategy...
Investigating the effect of the shale bedding structure on hydraulic fracture propagation behavior on the basis of a coupled thermal–hydraulic–mechanical numerical model
Available online 25 October 2025
The interaction process among hydraulic fractures and natural fractures, bedding planes, and other discontinuities during shale fracturing determines the complexity of the fracture network that is formed....
Electrorheological effect enhancement of waxy crude oil with graphene nanoparticles and its mechanism
Available online 24 October 2025
Electric treatment is a promising method to improve the cold flowability of waxy crude oil by taking advantage of the electrorheological (ER) effect of the crude oil. However, the efficacy of viscosity...
Hydrodynamics characteristics of rough-walled self-propping shale fractures: from microscale morphology to macroscale hydraulic response
Available online 24 October 2025
Self-propping fractures formed during hydraulic fracturing in shale reservoirs constitute a critical component of the hydraulic fractures, with surface roughness serving as a pivotal factor governing...
Micro-nanoscale pore structure characteristics and enrichment mechanisms of shale oil in mixed sedimentary reservoirs of the Jimusar Sag, Junggar Basin
Available online 24 October 2025
The successful development of shale oil in the United States has completely changed the global energy landscape. In recent years, shale oil in the Junggar Basin in China has attracted widespread attention....