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Keywords: crude oil
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Journal Articles
Journal: SPE Journal
SPE Journal (2021)
Paper Number: SPE-206709-PA
Published: 30 June 2021
...Mukhtar Elturki; Abdulmohsin Imqam Summary Gas-enhanced oil recovery is one of the most advantageous enhanced oil recovery methods. Nitrogen is one of the most investigated gases because of its beneficial properties. However, during its interaction with crude oil, nitrogen can induce asphaltene...
Journal Articles
Journal: SPE Journal
SPE Journal 26 (03): 1200–1212.
Paper Number: SPE-202471-PA
Published: 16 June 2021
... pressure in crude oil systems, enabling the identification of different characteristics of a hydrate slurry based on the AA concentration and the oil phase used. For example, the droplet size before hydrate formation was a poor indicator of AA performance for the AA and oils tested. Systems with similar...
Journal Articles
Journal: SPE Journal
SPE Journal 26 (03): 1189–1199.
Paper Number: SPE-204456-PA
Published: 16 June 2021
...D. Costa Salmin; Jose G. Delgado-Linares; David T. Wu; Luis E. Zerpa; Carolyn A. Koh Summary Some crude oils contain naturally occurring surfactants that avoid hydrate agglomeration. Natural hydrate antiagglomeration has been linked to different crude oil fractions, including asphaltenes...
Journal Articles
Journal: SPE Journal
SPE Journal (2021)
Paper Number: SPE-201513-PA
Published: 19 May 2021
... the charged polar fraction of crude oil, namely, asphaltenes. Surfactants are designed to reduce the interfacial tension (IFT) between two immiscible fluids (such as oil and water) and effectively used for oil recovery. They reduce the IFT by aligning themselves at the interface of these two...
Journal Articles
Journal: SPE Journal
SPE Journal (2021)
Paper Number: SPE-205374-PA
Published: 31 March 2021
... evolutionary algorithm wax inhibition wax remediation artificial intelligence hydrate remediation paraffin remediation scale remediation hydrate inhibition scale inhibition neural network upstream oil & gas remediation of hydrates dimension information particle czbest pipeline crude oil...
Journal Articles
Journal: SPE Journal
SPE Journal (2021)
Paper Number: SPE-205363-PA
Published: 12 March 2021
...Taniya Kar; Berna Hascakir Summary The objectives of this study are to perform a fundamental analysis of the mutual interactions between crude oil components, water, hydrocarbon solvents, and clays, and to determine the optimum hydrocarbon solvent in solvent steamflooding for a particular reservoir...
Journal Articles
Journal: SPE Journal
SPE Journal (2021)
Paper Number: SPE-203210-PA
Published: 09 March 2021
...% greater nitrogen foam half-life (32 minutes) than an optimized AOS–silica system at 150°F. The foam half-life of a stand-alone 0.5% AOS solution was 7 minutes. In the presence of crude oil, the foam half-life decreased for all the tested systems. Coreflood experiments at 150°F showed a significant...
Journal Articles
Journal: SPE Journal
SPE Journal 26 (01): 515–537.
Paper Number: SPE-204230-PA
Published: 10 February 2021
... the Wolfcamp reservoir-rock matrix with glass beads. Computed-tomography (CT) scanning enabled the visualization of the compositional changes with time and space during the gas-injection experiments and gas chromatography provided the overall change in composition between the crude oil injected and...
Journal Articles
Journal: SPE Journal
SPE Journal 25 (06): 3200–3216.
Paper Number: SPE-201211-PA
Published: 17 December 2020
...Lei Chen; Jinghua Ding; Junjie Gao; Shuyi Ren; Jingyang Gao; Gang Liu Summary Compressibility is a basic property of gelled crude oil, which was always regarded as a constant in the unsteady‐pipe‐flow process. In this article, the compressibility of gelled crude oil was accurately measured, and...
Journal Articles
Journal: SPE Journal
SPE Journal 25 (06): 3481–3493.
Paper Number: SPE-203822-PA
Published: 17 December 2020
... Seminole crude oil, with test results showing that strong CO 2 -foam forms in either a bulk-foam test or foam-flow test. An oxygen scavenger, carbohydrazide, was found effective for controlling the stability of the surfactant up to 80°C and total dissolved solid of ∼34,000 ppm. Moreover, a phosphonate...
Journal Articles
Journal: SPE Journal
SPE Journal 25 (04): 1784–1802.
Paper Number: SPE-200483-PA
Published: 13 August 2020
...) in the presence of two different oil samples, namely C1 and C2. These experiments were conducted to clarify the impact of each affecting parameter; in particular, the impact of resin and asphaltene of crude oil on the performance of LS surfactant (LSS) flooding. Hereafter, the optimal formulation was...
Journal Articles
Journal: SPE Journal
SPE Journal 25 (04): 1771–1783.
Paper Number: SPE-193196-PA
Published: 13 August 2020
... carbonate substrate and a crudeoil droplet in the brines of varying ionic compositions were measured directly by using a custom‐designed integrated‐thin‐film drainage apparatus (ITFDA) equipped with a bimorph force sensor. In addition, the liberation kinetics of crude oil from carbonate rocks were...
Journal Articles
Journal: SPE Journal
SPE Journal 25 (02): 771–787.
Paper Number: SPE-199878-PA
Published: 16 April 2020
... reference. Water is often coproduced with crude oil and may affect deposition of asphaltenes and removal. In this study, we investigate the effect of water in both asphaltene deposition and removal by functional molecules. Two different crudes from different fields that give rise to serious asphaltene...
Journal Articles
Journal: SPE Journal
SPE Journal 25 (01): 416–431.
Paper Number: SPE-199339-PA
Published: 17 February 2020
... concentration co 2 oil-based foam span 20 stability surfactant solution foam height half-life surfactant Upstream Oil & Gas aqueous foam experiment crude oil foam flow in porous media chemical flooding methods Fluid Dynamics foam stability Upstream Oil & Gas apparent viscosity...
Journal Articles
Journal: SPE Journal
SPE Journal 24 (06): 2841–2858.
Paper Number: SPE-197056-PA
Published: 18 December 2019
... connectivity. Experiments at the single–pore scale reveal a time–dependent oil dewetting and swelling behavior when a crudeoil droplet is in contact with low–salinity water. An interplay between water chemical potential and oil–phase polar compounds explains this pore–scale observation well. Experiments at...
Includes: Supplementary Content
Journal Articles
Journal: SPE Journal
SPE Journal 24 (06): 2859–2873.
Paper Number: SPE-197067-PA
Published: 18 December 2019
... reported additional oil recovery by low–salinity–water injection. Using similar rock and brines, here in this work, different crudeoil samples were selected to examine the relationship between crudeoil potency to form microdispersions and improved oil recovery (IOR) by low–salinity–water injection in...
Journal Articles
Journal: SPE Journal
SPE Journal 24 (06): 2822–2840.
Paper Number: SPE-190259-PA
Published: 08 August 2019
... of 10 −2 to 10 −3 mN/m) with the crude oil at the displacement front and good foamability at underoptimal conditions. Both ultralow–IFT and foamability properties were found to be sensitive to the salinity gradient. Ultralow–IFT foam flooding achieved more than 50% incremental oil recovery compared...
Includes: Supplementary Content
Journal Articles
Journal: SPE Journal
SPE Journal 24 (03): 1139–1153.
Paper Number: SPE-190168-PA
Published: 05 April 2019
... than a critical value to generate stable CO 2 foam. 18 6 2018 12 11 2018 31 8 2018 5 4 2019 14 4 2018 13 6 2019 Copyright 2019, Society of Petroleum Engineers enhanced recovery crude oil waterflooding pressure gradient Upstream Oil & Gas surfactant...
Journal Articles
Journal: SPE Journal
SPE Journal 24 (02): 413–430.
Paper Number: SPE-181331-PA
Published: 09 January 2019
... combination heat loss steam chamber thermal method SAGD solvent concentration oil layer SAGP enhanced recovery viscosity reduction reservoir sagd april 2019 steam-assisted gravity drainage concentration experiment crude oil top layer heavy oil heat conduction SAGD is a method for...
Journal Articles
Journal: SPE Journal
SPE Journal 23 (06): 2218–2231.
Paper Number: SPE-179598-PA
Published: 26 September 2018
...; foam-flow experiments (without crude oil) were performed in porous media to estimate the foam strength. Finally, oil-displacement experiments were performed with a crude oil after a secondary gasflood. Two different injection strategies were studied in this work: surfactant slug followed by gas...

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