Showing papers in "Petroleum in 2018"

TL;DR: The present review describes the biosurfactants and its synthesis from bacteria and also emphases on the role of surfactants in oil remediation.

TL;DR: New models for estimating bottom hole pressure of vertical wells with multiphase flow are proposed and the superiority of the hybridization ANN-GWO compared with the 2 other hybridizations or with the BP learning alone is demonstrated.

TL;DR: In this paper, Artificial Neural Network (ANN), Support Vector Machine (SVM), and Adaptive Neuro Fuzzy inference System (ANFIS) were used to predict the reservoir porosity based on wireline log data.

TL;DR: In this article, a comprehensive laboratory study on the impacts of the EOR chemicals on CaCO3 scale formation and prevention using static bottle and dynamic tube blocking methods is presented. But, the results suggest that the performance of scale inhibitors could be substantially affected by the enhanced oil recovery (EOR) chemicals.

TL;DR: In this article, the authors evaluate huff-n-puff air injection in a shale oil reservoir using a simulation approach and show that the synergic recovery mechanism of air flooding in conventional light oil reservoirs can be replicated in shale oil reservoirs by using air huff n-puff injection strategy.

TL;DR: In this paper, a model based on simulated annealing (SA) has been built in terms of temperature, solution gas-oil ratio, and gravity of oil and gas to predict the oil formation volume factor.

TL;DR: The results show that capillary pressure curves reconstructed and predicted by PSO-BP neural network method are in better agreement with mercury intrusion curves than J-Function method, which can totally meet the in-situ requirements.

TL;DR: In this paper, a novel numerical model based on artificial neural network (ANN) is proposed for the prediction of bubble point pressure as a function of solution gas-oil ratio, reservoir temperature, oil gravity (API), and gas specific gravity in petroleum systems.

TL;DR: In this paper, the authors investigated the differential impacts of the depositional and petrophysical attributes on the hydrocarbon volumes trapped in the Messinian reservoirs and revealed hydraulically-connected and homogeneous Messinian reservoir rocks.

TL;DR: In this paper, an experimental study has been made of oil-water core-annular flow in a horizontal pipe with special attention for the influence of the oil viscosity on the pressure drop.

TL;DR: In this paper, a novel experimental method was designed to evaluate condensate blockage and the mitigating effect of gas injection and the optimal CO2 injection volume is around 0.15 HCPV.

TL;DR: In this article, the authors explored the use of dynamic distributed steam injection within a pad of SAGD wellpairs and demonstrated that feedback control leads to improvements of the SOR over that of constant pressure.

TL;DR: In this paper, the effectiveness, viability and feasibility of applying Fenton reactants in treating soil contaminated with automatic gas oil (AGO) was investigated ex-situ, where soil physicochemical properties were characterized using standard analytical methods, while total petroleum hydrocarbon (TPH) content was determined by molecular spectroscopy.

TL;DR: In this paper, a new kind of blockage remover has been developed and evaluated by rheological behavior experiments, dissolution experiments and core flooding experiments, which can effectively reduce the viscosity of polymer and completely degrade the reservoir blockage with low corrosion rate.

TL;DR: Based on seepage theory, a well-test model of two-region radial composite reservoir with infinite outer boundary has been built in this paper considering wellbore storage and skin effects.

TL;DR: In this article, a sandpack model with porosity and permeability of 32.3% and 9.4 D, and a heavy crude oil with viscosity of 6430mPa.s were used to represent a typical thin heavy oil formation.

TL;DR: The Inverted-Shroud separator (IS-separator) has been used for downhole gas separation in oil production wells in this article, where the geometry characteristics and phenomenology of the IS separator are discussed.

TL;DR: In this paper, a single-phase displacement test was applied to investigate how the permeability changed with compaction, and two-phase displacements test assessed the influence of compaction on oil production.

TL;DR: The Chang 6 reservoir of Yanchang formation in Jingan oilfield has relatively poor quality: the porosity ranges mainly from 8 to 14%, and permeability ranges from 0.018 to 10.48 md, with a mean of 1.10 md, categorized as low porosity and low permeability reservoir type with strong heterogeneity as mentioned in this paper.

TL;DR: In this article, the performance of CO 2 absorption into aqueous 2-amino-2-methyl-propanol (AMP) solution was investigated by measuring the amount of CO2 in the liquid phase during CO2 absorption process.

TL;DR: In this article, a fully coupled finite element framework for thermal fracturing simulation is presented, which is based on the theory of non-isothermal multiphase flow in fracturing porous media.

TL;DR: In this paper, the benefits of using the recondenser in recirculation mode, returning condensed boil-off gas to the cargo tanks in the form of slightly warmed LNG, are discussed.

TL;DR: In this paper, an immiscible oil-water two phase flow in a typical porous media was modeled using the well-known Lattice Boltzmann method, and the results showed the effect of grid resolution on capillary data which are validated quantitatively by proposing a new approach using Purcell's equation.

TL;DR: In this paper, a single row drilling experiment was conducted to study the influence of the tooth shape parameter's influence on the disc teeth's rock-breaking effect, which provided some basis for the composite teeth type roller bit's combined experimental study.

TL;DR: A simple, yet rigorous workflow that generates simplified representative models in order to achieve low simulation run times while capturing physical phenomena which is fundamental for accurate calculations is presented.