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ISSN: 1995-8226

Development strategies of a gas condensate reservoir with a large gas cap, thin oil rim, strong bottom water, and natural barriers

The development of gas condensate reservoirs with a large gas cap, thin oil rim, strong bottom water, and natural barriers faces numerous challenges, including reservoir heterogeneity, coning effects,...

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A novel intermingled fractal model for predicting relative permeability in tight oil reservoirs considering microscopic pore geometry

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...

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Plugging mode of flaky lost circulation materials within fractures and mechanism to enhance pressure-bearing capacity for the plugging zone

During drilling operations in deep fractured tight gas reservoirs, lost circulation of working fluid frequently occurs due to the formation's low pressure-bearing capacity. Adding lost circulation materials...

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Experimental study of dehydration performance of re-crosslinkable preformed particle gel during extruding through an open fracture

Re-crosslinkable preformed particle gel (RPPG) has been considered to be one of the most promising gels for dealing with fracture and void space conduit (VSC) conformance problems. However, the dehydration...

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Flow characteristics of shale oil and its geological controls: A case study of the Lucaogou Formation in the Jimsar Sag, Junggar Basin

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,...

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Rift marginal coarse-grained sediment gravity flow deposits in the Eocene Dongying Depression, Bohai Bay Basin, China: Balancing tectonic and climatic controls

Previous studies have indicated that sediment gravity flow deposits developed in lacustrine active extensional rift basins are primarily influenced by tectonics and to a lesser extent by climate. Our...

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Identification and Distribution Patterns of the Ultra-deep Small-scale Strike-slip Faults based on Convolutional Neural Network in Tarim Basin, NW China

The isolated fracture-vug systems controlled by small-scale strike-slip faults within ultra-deep carbonate rocks of the Tarim Basin exhibit significant exploration potential. The study employs a novel...

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Physics-informed graph neural network for predicting fluid flow in porous media

With the rapid development of deep learning neural networks, new solutions have emerged for addressing fluid flow problems in porous media. Combining data-driven approaches with physical constraints...

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Experimental study of the characteristics of reverse fault slip induced by hydraulic fracturing

Hydraulic fracturing (HF) has achieved significant commercial success in unconventional oil and gas development. However, it has the potential to induce fault slip. This study investigates the physical...

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Petroleum recovery from salt cavern through natural gas displacement: Insights from a gas–oil two-phase flow model with gas dissolution and exsolution

The challenge of wide brine source and its additional problems come from the economy (energy consumption and other costs), security (re-dissolution of surrounding salt rocks), and environment (groundwater...

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Synthesis kinetics of B-COPNA resin monitored by the transformation of functional groups using in-situ FTIR spectroscopy

B-COPNA resin, synthesized from the light fraction of ethylene tar (ETLF), is a superior precursor of the carbon materials. An in-depth understanding of the COPNA resin preparation process and strict...

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Fast simulation of EM telemetry in vertical drilling: A semi-analytical finite-element method with virtual layering technique

The electromagnetic (EM) telemetry systems, employed for real-time data transmission from the borehole and the earth surface during drilling, are widely used in measurement-while-drilling (MWD) and...

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Joint inversion with prestack waveform and spectral information for layered media

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...

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Integrated optimization of reservoir production and layer configurations using relational and regression machine learning models

This study introduces a novel approach to addressing the challenges of high-dimensional variables and strong nonlinearity in reservoir production and layer configuration optimization. For the first...

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A study on numerical simulation method of Cs2LiYCl6:Ce3+ detection response in neutron well logging

Neutron well logging, using instruments equipped with neutron source and detectors (e.g., 3He-tubes, NaI, BGO), plays a key role in lithological differentiation, porosity determination, and fluid property...

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Coaly source rock evaluation using well logs: the Jurassic Kezilenuer Formation in Kuqa Depression, Tarim Basin, China

Coaly source rocks have attracted considerable attention for their significant hydrocarbon generation potential in recent years. However, limited study is performed on utilizing geochemical data and...

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Surface erosion thickness and oxygen isotope of the Early Jurassic lake water in northern Sichuan Basin, evidence from clumped isotopes of shell limestones

Oxygen isotope (δ18O) of paleolake water is a key indicator for reconstructing the formation temperature and diagenetic history of lacustrine carbonate minerals. In this study, we use clumped isotopes...

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Experimental and modeling investigation of zero net liquid flow in hilly terrain pipeline

Hilly terrain pipeline is a common form of pipeline in oil and gas storage and transportation industry. Due to the hilly terrain influence, the liquid at the elbow of the gathering pipeline is easy...

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Control of dual-function amphiphilic biochar-MoO3-x catalysts with abundant oxygen vacancies for efficient extractant-free oxidative desulfurization

The development of an efficient dual-function catalytic-sorption system, which seamlessly integrates reaction and separation into a single step for extractant-free systems, represents a transformative...

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Numerical investigation on 2-D NMR response mechanisms and the frequency conversion of petrophysical parameters in shale oil reservoirs

Characterizing the petrophysical properties holds significant importance in shale oil reservoirs. Two-dimensional (2-D) nuclear magnetic resonance (NMR), a nondestructive and noninvasive technique,...

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Effects of multiphase transport in multiscale pore network on carbon storage and enhanced shale oil recovery: An experimental and numerical study

CO2 injection in shale oil reservoirs has emerged as a promising technique for simultaneously achieving CO2 geological storage and enhancing shale oil recovery. This study investigates the potential...

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Correlating the carbonic acid reaction with tight sand and pure minerals during geological carbon storage

CO2 injection into geological formations has been proven to be an effective approach for carbon storage. When dissolved in formation water, CO2 forms carbonic acid that induces mineral dissolution at...

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The geochemical, pore development and water-bearing characteristics of deep and ultra-deep marine shales and their effects on gas content: New implications from the shales of the first Lower Cambrian high-yield gas well (Z201) in China

The Lower Cambrian shales in the Sichuan Basin are considered one of the most promising shale gas resources in China. However, large-scale commercial development has not been achieved due to the relatively...

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