Showing papers in "Petroleum Science in 2020"

TL;DR: In this article, the development methods and EOR technologies of carbonate reservoirs are systematically summarized, the relevant mechanisms are analyzed, and the application status of oil fields is catalogued.

TL;DR: Reflection waveform inversion (RWI) as mentioned in this paper is a technique that utilizes reflections to recover background velocity including the deep part of the model, which has been recognized as the key method for seismic data imaging and Earth model building in the fields of global/regional and exploration seismology.

TL;DR: In this paper, the effects of a solution of modified seawater with some surfactants, namely C12TAB, SDS, and TritonX-100 (TX-100), on the wettability of carbonate rock were investigated through contact angle measurements.

TL;DR: In this paper, two amino acid based surfactants, namely lauroyl arginine (l-Arg) and l-Cys, were synthesized and used to reduce the interfacial tension (IFT) between oil and water and/or altering the rock wettability toward water-wet using various surfactant agents including cationic, anionic, non-ionic, and amphoteric varieties.

TL;DR: In this article, the authors used electrical image logs in the carbonate Asmari Formation reservoir in Zagros Basin, SW Iran, to evaluate natural fractures, porosity system, permeability profile and heterogeneity index and accordingly compare the results with core and well data.

TL;DR: In this paper, the authors reviewed the mechanistic understanding of the reactions that govern the inhibitor retention and release, modeling, and the state-of-the-art innovation in squeeze treatment.

TL;DR: In this paper, a review of the application of computational fluid dynamics (CFD) studies for simulating enhanced oil recovery (EOR) methods is presented and potentials for future studies and the challenges researchers may face in this method were mentioned.

TL;DR: In this article, the authors examined the impact of the oxygenated additives namely DTBP (Di-Tetra-Butyl-Phenol) and 1-Pentadecanol (1-DEC) on emissions, combustion and performance patterns of Karanja biodiesel/diesel blends.

TL;DR: In this article, a brief description of the development history of relaxation theories and models for porous media is given, and the widely used NMR techniques for characterizing petrophysical properties and pore structures are presented.

TL;DR: Wang et al. as discussed by the authors reviewed the historical development of China's petroleum market, identified the current challenges and proposed corresponding countermeasures for future prospects, and highlighted five main challenges, namely lack of marketization, excess oil refining capacity, high external dependency, environment pollution and unstable international trading relationship.

TL;DR: A lithofacies classification method based on local deep multi-kernel learning support vector machine (LDMKL-SVM) that can consider low-dimensional global features and high-dimensional local features is developed and offers an effective method for lith ofacies recognition and reservoir prediction by using SVM.

TL;DR: In this article, a novel experimental procedure was proposed to investigate the phase behavior of a solvent mixture (SM) with heavy oil, and a theoretical methodology was employed to estimate the phase behaviour of the heavy oil-solvent mixture (HO-SM) systems with various mole fractions of SM.

TL;DR: In this article, molecular dynamics simulation was used to determine the interfacial energy (strength) and adsorption of Fe2O3 and Fe3O4 nanofluids infused in reservoir sandstones.

TL;DR: In this paper, a two-dimensional physical model of the karst fault system was designed and fabricated based on the geological model of TK748 well group in the seventh block of the Tahe Oilfield.

TL;DR: In this article, the authors explored the possibility of using novel chemicals to enhance oil recovery from tight sands via spontaneous imbibition, including a cationic surfactant (C12TAB), two anionic surfactants (O242 and O342), an ionic liquid (BMMIM BF4), a high pH solution (NaBO2), and a series of house-made deep eutectic solvents (DES3-7, 9, 11, and 14).

TL;DR: In this paper, a reduced reflection coefficient equation was derived by linearizing the slowness expressions and applied to the Bayesian deterministic inversion problem to estimate the anisotropic parameters of reservoirs.

TL;DR: In this paper, a modified CO2 huff-n-puff experiment method is developed to estimate the recovery factors and the CO2 injectivity in the fractured organic-rich shales and tight sandstones.

TL;DR: In this paper, a novel oil-in-water (O/W) emulsion drilling fluid formulated with a methyl ester extracted from Indian mango seed oil was evaluated and the effect of the weight percent of different constituents of the emulsion/suspension including the oil phase, bentonite, and polyanionic cellulose polymer on the rheology and the fluid loss was examined.

TL;DR: Li et al. as mentioned in this paper proposed a more suitable rock physics model to characterize the shale gas-bearing reservoirs and proposed a new brittleness indicator for the high-porosity and organic-rich shale gasbearing reservoirs.

TL;DR: Wang et al. as discussed by the authors investigated the influence of rapid economic development on pollution at the municipal level in China and found that a low level of economic development would aggravate environmental pollution, and when the economy reaches a high level, this economic development will improve environmental quality.

TL;DR: In this paper, the sign of the second Fourier coefficient (FC) was used to estimate the azimuth of the symmetry axis of a reservoir with a set of vertical fractures.

TL;DR: In this paper, the present-day in situ stress distribution within the Chang 7 reservoir was predicted using the combined spring model based on well logs and measured stress data, and the results indicate that stress magnitudes increase with burial depth.

TL;DR: The characteristics of petroliferous plays in subtle traps within a sequence stratigraphic framework in the Dongying Depression are investigated in this paper, where they are controlled by unconformities at margins of the depression.

TL;DR: Based on the experiments of nitrogen gas adsorption (N2GA) and nuclear magnetic resonance (NMR), the multifractal characteristics of pore structures in shale and tight sandstone from the Chang 7 member of Triassic Yanchang Formation in Ordos Basin, NW China, are investigated.

TL;DR: In this paper, the effects of diagenetic processes on the reservoir quality of the carbonate successions of the Asmari Formation, in the Marun oil field, southwest Iran, were investigated.

TL;DR: In this paper, an anionic fluorinated surfactant was synthesized and used for chemical treatment and carbonate rock wettability alteration in a gas condensate reservoir.

TL;DR: In this article, a liquid-solid two-phase jet was simulated using dense grid by one-way coupling of solid phase due to its dilute distribution, and the simulation results agreed well with experiments.

TL;DR: In this paper, a new structure of self-rotating nozzle was proposed to improve the hole-enlarging capability, roundness and rock-breaking efficiency of radial jet drilling.

TL;DR: A preprocessing of good initial model selection is proposed to reduce the ensemble size, and then, EnKF is utilized to predict production performances stochastically to provide reliable assimilation results with much reduced computation time.

TL;DR: In this article, surface modification effect on the stability of the colloidal solution in porous media and oil recovery was inspected using a HPHT rheometer, and the surface modified silica nanoparticles were found to alter the wettability of the aqueous phase into strongly water-wet by changing the contact angle from 80° to 3° measured against glass slides representing sandstone rocks.