Mechanics differences of laminations and crack propagation mechanism of continental shale
Available online 17 January 2025
Clarify the mechanical properties of different laminations and the fracture mechanism of continental shale under in-situ stress can provide theoretical basis for more comprehensive evaluation of the...
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Ball-sealer transport characteristics and plugging performance in vertical wells
Available online 13 January 2025
Ball-sealer plugging is a cost-effective method for hydraulic fracturing in vertical wells, yet the transport and plugging behavior of ball sealers remains poorly understood. This paper investigates...
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Coupling analysis of transient cuttings transport and tubular mechanical behaviors in extended-reach drilling
Available online 13 January 2025
It is generally believed that cuttings have a significant impact on the forces of tubular string in extended-reach drilling. However, there are few studies attempted to investigate and quantify it....
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Morpho-dynamics in fan deltas: Effect of topography on flow transformation, facies distribution and graded profile evolution, a case study in XLG fan delta
Available online 11 January 2025
Fan deltas are usually constructed through episodic flood event with debris flow transforming to hyper-concentrated flow during sediments proceeding. However, the role of topography in controlling the...
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Experimental study of EOR mechanisms of non-chemical CO2 microbubbles and their impact on pore structures
Available online 3 January 2025
Non-chemical CO2 microbubbles as a mobility control technology in enhanced oil recovery (EOR) and carbon sequestration are becoming attractive. In this study, the EOR mechanisms of non-chemical CO2...
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Unraveling the corrosion behavior and corrosion scale evolution of N80 steel in high-temperature CO2 environment: The role of flow regimes
December 2024
During CO2 transportation and storage, metal equipment such as oilfield pipelines suffers from severe CO2 corrosion, especially in harsh downhole injection equipment. In this study, we investigated...
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Multi-layer risk spillover network of Chinese Energy companies under the background of carbon neutralization
December 2024
As global climate change and environmental challenges intensify, governments across the globe are increasingly concerned about the sustainable development of the energy industry, with the identification...
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Synergistic effect of nanoparticles and viscoelastic surfactants to improve properties of drilling fluids
December 2024
The conservation of rheological and filtration properties of drilling fluids is essential during drilling operations. However, high-pressure and high-temperature conditions may affect drilling fluid...
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Tectonics of the West and Central African strike-slip rift system
December 2024
It is essential to intensify research on the strike-slip tectonic system in West and Central Africa to better understand regional tectonic evolution and achieve future breakthroughs in oil and gas exploration....
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Interwell interference model of horizontal wells in shale gas reservoirs based on multi-connected boundary element method
December 2024
Due to the wide application of closely spaced multi-well horizontal pads for developing unconventional gas reservoirs, interference between wells becomes a significant concern. Communication between...
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Three-dimensional fracture space characterization and conductivity evolution analysis of induced un-propped fractures in shale gas reservoirs
December 2024
Huge numbers of induced unpropped (IU) fractures are generated near propped fractures during hydraulic fracturing in shale gas reservoirs. But it is still unclear how their fracture space and conductivity...
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Impacts of microbial interactions on underground hydrogen storage in porous media: A comprehensive review of experimental, numerical, and field studies
December 2024
Amidst the rapid development of renewable energy, the intermittency and instability of energy supply pose severe challenges and impose higher requirements on energy storage systems. Among the various...
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Rock physics properties and influencing factors of subsalt carbonate reservoir of Ordovician Majiagou Formation in central Ordos Basin
December 2024
The carbonate reservoirs in the Ordovician Majiagou Formation of the Ordos Basin have undergone complex geological evolution, resulting in high-quality dolomite reservoirs that exhibit strong heterogeneity....
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The generation mechanism of deep natural gas in Tabei uplift, Tarim Basin, Northwest China: Insights from instantaneous and accumulative effects
December 2024
The natural gas heavy carbon isotope and high dryness coefficients genesis in Tabei uplift, Tarim Basin has been highly controversial. To investigate the generation mechanisms of natural gas in the...
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Dynamic evolution mechanism of the fracturing fracture system—Enlightenments from hydraulic fracturing physical experiments and finite element numerical simulation
December 2024
This study aims to elucidate the dynamic evolution mechanism of the fracturing fracture system during the exploration and development of complex oil and gas reservoirs. By integrating methods of rock...
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December 2024
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December 2024
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Study on the influence factors of rock breaking by supercritical CO2 thermal fracturing
December 2024
At present, there is a growing demand for safe and low-pollution rock-breaking technology. The rock breaking technology of supercritical CO2 thermal fracturing has many advantages, such as no dust noise,...
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Mobilization of tight oil by spontaneous imbibition of surfactants
December 2024
A series of spontaneous imbibition (SI) tests of tight oil were performed, together with oil distribution scans by computed tomography (CT) and nuclear magnetic resonance (NMR). Thus, the best surfactants...
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Impacts of mantle-derived fluids on source-related biomarkers in crude oils: A case study from the Dongying Depression, eastern China
December 2024
Mantle-derived fluids can change the biomarker compositions in oil, with respect to abnormal thermal energy and volatiles input. Identification the reliable biomarkers for oil-source correlation is...
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Characterization of oxygen initiation process in the autothermic pyrolysis in-situ conversion of Huadian oil shale
December 2024
The oxygen initiation process, one of the key processes in the early stage of the autothermic pyrolysis in-situ conversion technology, has not been deeply investigated, which seriously limits its development....
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Theoretical calculation and analysis of the velocity of shaped charge jet with modified collapse velocity model
December 2024
The application of perforating completion technology in oil and gas field development has gained widespread popularity. Enhancing the efficiency of oil and gas wells relies on increasing the penetration...
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Numerical simulation of the electromagnetic torques of PMSM with two-way magneto-mechanical coupling and nonuniform spline clearance in electric submersible pumping wells
December 2024
Clearance-fit (side-fit) spline joints are a key component in a permanent magnet synchronous motor (PMSM) in electric submersible pumping wells. The nonuniform spline clearance affects the output performance...
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Pore-scale probing CO2 huff-n-puff in extracting shale oil from different types of pores using online T1–T2 nuclear magnetic resonance spectroscopy
December 2024
CO2 huff-n-puff shows great potential to promote shale oil recovery after primary depletion. However, the extracting process of shale oil residing in different types of pores induced by the injected...
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Emulsion properties and plugging performances of active crude oil enhanced by amphiphilic Janus nanosheets
December 2024
Inadequate strength and stability of active crude oil emulsions stabilized by conventional surfactants always lead to a limited plugging rate of plugging agents. Thus, to address this issue, the synthesis...
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