Syntheses and properties of associative acrylamide copolymers containing short hydrophobic chains used in a friction reducer for slick-water fracturing
Available online 26 March 2024
Two allyldimethylalkyl quaternary ammonium salt (AQAS) monomers, N,N-dimethylallylphenylpropylammonium bromide (AQAS1) and N,N-dimethylallylnonylammonium bromide (AQAS2), were synthesized and used to...
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Research on the solid particle erosion wear of pipe steel for hydraulic fracturing based on experiments and numerical simulations
Available online 26 March 2024
Erosion wear is a common failure mode in the oil and gas industry. In the hydraulic fracturing, the fracturing pipes are not only in high-pressure working environment, but also suffer from the impact...
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Development and performance evaluation of high temperature resistant strong adsorption rigid blocking agent
Available online 26 March 2024
As drilling wells continue to move into deep ultra-deep layers, the requirements for temperature resistance of drilling fluid treatments are getting higher and higher. Among them, blocking agent, as...
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Influence of pore structure heterogeneity on channeling channels during hot water flooding in heavy oil reservoir based on CT scanning
Available online 22 March 2024
Hot water flooding is an effective way to develop heavy oil reservoirs. However, local channeling channels may form, possibly leading to a low thermal utilization efficiency and high water cut in the...
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Supramolecular polymer-based gel fracturing fluid with a double network applied in ultra-deep hydraulic fracturing
Available online 22 March 2024
A gel based on polyacrylamide, exhibiting delayed crosslinking characteristics, emerges as the preferred solution for mitigating degradation under conditions of high temperature and extended shear in...
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Adsorption behavior of CO2/H2S mixtures in calcite slit nanopores for CO2 storage: An insight from molecular perspective
Available online 22 March 2024
It is acknowledged that injecting CO2 into oil reservoirs and saline aquifers for storage is a practical and affordable method for CO2 sequestration. Most CO2 produced from industrial exhaust contains...
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Research on thermal insulation materials properties under HTHP conditions for deep oil and gas reservoir rock ITP-Coring
Available online 20 March 2024
Deep oil and gas reservoirs are under high-temperature conditions, but traditional coring methods do not consider temperature-preserved measures and ignore the influence of temperature on rock porosity...
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Effect of low-speed waterjet pressure on the rock-breaking performance of unsubmerged cavitating abrasive waterjet
Available online 20 March 2024
Unsubmerged cavitating abrasive waterjet (UCAWJ) has been shown to artificially create a submerged environment that produces shear cavitation, which effectively enhances rock-breaking performance. The...
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Application of sparse S transform network with knowledge distillation in seismic attenuation delineation
Available online 19 March 2024
Time-frequency analysis is a successfully used tool for analyzing the local features of seismic data. However, it suffers from several inevitable limitations, such as the restricted time-frequency resolution,...
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Hole cleaning evaluation and installation spacing optimization of cuttings bed remover in extended-reach drilling
Available online 16 March 2024
In extended-reach or long-horizontal drilling, cuttings usually deposit at the bottom of the annulus. Once cuttings accumulate to a certain thickness, complex problems such as excessive torque and drag,...
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Sedimentary paleoenvironment and its control on organic matter enrichment in the Mesoproterozoic hydrocarbon source rocks in the Ordos Basin, southern margin of the North China Craton
Available online 15 March 2024
The black shale of the Mesoproterozoic Cuizhuang Formation in the Changcheng System in Yongji city, North China Craton, is a potential source rock. Understanding the organic matter enrichment mechanism...
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Prediction and quantification of effective gas source rocks in a lacustrine basin: Western Depression in the Liaohe Subbasin
Available online 15 March 2024
Due to limited data on the geochemical properties of natural gas, estimations are needed for the effective gas source rock in evaluating gas potential. However, the pronounced heterogeneity of mudstones...
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Viscoacoustic generalized screen propagator in constant-Q model
Available online 15 March 2024
When seismic waves propagate through the geological formation, there is a significant loss of energy and a decrease in imaging resolution, because of the viscoacoustic properties of subsurface medium....
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Reactive transport modeling constraints on the complex genesis of a lacustrine dolomite reservoir: A case from the Eocene Qaidam Basin
Available online 14 March 2024
Reactive transport modeling (RTM) is an emerging method used to address geological issues in diagenesis research. However, the extrapolation of RTM results to practical reservoir prediction is not sufficiently...
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New model of linkage evolution for the transtensional fault systems in the Nanpu Sag of Bohai Bay Basin: Insight from seismic interpretation and analogue modelling
Available online 11 March 2024
The evolution of faults within the same stress field is frequently influenced by numerous factors, involving the reactivation of pre-existing structures, stress transmission through ductile detachment...
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The impact of industrial transformation on green economic efficiency: New evidence based on energy use
Available online 11 March 2024
Developing a green economy is key to achieving the 2030 Sustainable Development Goals. This paper uses the SBM-GML index, which includes non-desired outputs, to measure the trend of regional green economic...
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Study of inter-well interference in shale gas reservoirs by a robust production data analysis method based on deconvolution
Available online 8 March 2024
In order to overcome the defects that the multi-well typical curves analysis of shale gas reservoirs is rarely applied to engineering, this study proposes a robust production data analysis method based...
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Paleoenvironmental reconstruction and organic matter accumulation of the paleogene shahejie oil shale in the Zhanhua Sag, Bohai Bay Basin, eastern China
Available online 7 March 2024
The controlling factors of organic-rich shale accumulation is essential for the exploration and development of shale oil and gas resources. The sedimentary environment plays a vital role in the formation...
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Characterization of chemical composition of high viscosity heavy oils: Macroscopic properties, and semi-quantitative analysis of molecular composition using high-resolution mass spectrometry
Available online 4 March 2024
Heavy oil is an important resource in current petroleum exploitation, and the chemical composition information of heavy oil is crucial for revealing its viscosity-inducing mechanism and solving practical...
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Reliability analysis of carbon fiber rod-reinforced umbilical cable under tension using an improved sampling method
Available online 1 March 2024
The umbilical cable is a vital component of subsea production systems that provide power, chemical agents, control signals et al., and its requirement for reliability is exceedingly high. However, as...
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Combinatorial reasoning-based abnormal sensor recognition method for subsea production control system
Available online 1 March 2024
The subsea production system is a vital equipment for offshore oil and gas production. The control system is one of the most important parts of it. Collecting and processing the signals of subsea sensors...
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Oilfield analogy and productivity prediction based on machine learning: Field cases in PL oilfield, China
Available online 1 March 2024
In the early time of oilfield development, insufficient production data and unclear understanding of oil production presented a challenge to reservoir engineers in devising effective development plans....
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OFC
February 2024
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Synergistic catalysis of the N-hydroxyphthalimide on flower-like bimetallic metal-organic frameworks for boosting oxidative desulfurization
February 2024
Synergic catalytic effect between active sites and supports greatly determines the catalytic activity for the aerobic oxidative desulfurization of fuel oils. In this work, Ni-doped Co-based bimetallic...
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Working condition recognition of sucker rod pumping system based on 4-segment time-frequency signature matrix and deep learning
February 2024
High-precision and real-time diagnosis of sucker rod pumping system (SRPS) is important for quickly mastering oil well operations. Deep learning-based method for classifying the dynamometer card (DC)...
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