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Keywords: stability
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Journal Articles
Journal: SPE Journal
SPE Journal (2021)
Paper Number: SPE-201513-PA
Published: 19 May 2021
... particles, our study suggests the use of anionic surfactants for the extraction of heavy oils. 3 8 2020 5 4 2021 25 3 2021 19 5 2021 Copyright © 2021 Society of Petroleum Engineers complex reservoir zeta potential hascakir bitumen oil sample stability oil sand...
Journal Articles
Journal: SPE Journal
SPE Journal (2021)
Paper Number: SPE-195318-PA
Published: 30 April 2021
...Zhouyuan Zhu; Yanni Liu; Canhua Liu; Anthony R. Kovscek Summary Because of complex chemical reactions and multiphase flow physics, the displacement front stability for in-situ combustion (ISC) enhanced oil recovery (EOR) processes are not well understood. In this work, theory and numerical...
Journal Articles
Journal: SPE Journal
SPE Journal (2021)
Paper Number: SPE-200441-PA
Published: 26 January 2021
... at elevated temperature, the AA content steadily increased because of hydrolysis reactions. When the AA content was 30 mol% or higher, the viscosity started to decrease, and the adsorption started to increase as the polymer solution was aged further. Thermal stability improved when ATBS was included...
Journal Articles
Journal: SPE Journal
SPE Journal 25 (06): 3481–3493.
Paper Number: SPE-203822-PA
Published: 17 December 2020
... heterogeneous carbonate reservoir in the Permian Basin of west Texas. A method of high-performance liquid chromatography-evaporativelight-scattering detector (HPLC-ELSD) was followed for characterizing the surfactant stability. The foam transport process was studied in the absence and the presence of East...
Journal Articles
Journal: SPE Journal
SPE Journal 25 (05): 2319–2340.
Paper Number: SPE-195515-PA
Published: 15 October 2020
...Jiajia Gao; Hon Chung Lau; Jin Sun Summary Conventional drilling design assumes that the porous rock is fully saturated with a single fluid and therefore tends to inaccurately predict the mud weight needed for borehole stability because the pore space of the porous rock may actually have two or...
Journal Articles
Journal: SPE Journal
SPE Journal 25 (05): 2234–2250.
Paper Number: SPE-199328-PA
Published: 15 October 2020
..., which results in complex mesh generation and long computation time. In this study, we investigate perforation interaction to find the optimal perforation design that yields the highest productivity while maintaining mechanical stability. The practical implications of this work to the field are (1) the...
Journal Articles
Journal: SPE Journal
SPE Journal 25 (04): 1871–1883.
Paper Number: SPE-201189-PA
Published: 13 August 2020
.... Minimum miscibility pressure (MMP) displacement tests were performed for dead crude oil from the Wolfcamp Spraberry Trend area using C 2 H 6 and CO 2 . Aqueous stability, salinity scan, and static foam tests were performed to identify a formulation. Subsequent foam quality and coreflood displacement tests...
Journal Articles
Journal: SPE Journal
SPE Journal 25 (03): 1333–1350.
Paper Number: SPE-200487-PA
Published: 11 June 2020
... limited at less than 200°C. Polyanionic cellulose (PAC) has an excellent heat‐resistant stability, salt tolerance, calcium and magnesium resistant, and strong antibacterial activity, and it exhibits exceptional filtration and rheological behavior under HPHT conditions. However, using PAC beyond 200°C is...
Journal Articles
Journal: SPE Journal
SPE Journal 25 (03): 1259–1271.
Paper Number: SPE-199904-PA
Published: 11 June 2020
... were tested, including the mass ratio of mixed surfactants ( R m ), the surfactant/oil ratio (SOR), the mass concentration of cosurfactant ( c co ), and the salinity of the saline solution ( c s ). Considering the application environment of displacement spacers, the long‐term stability and temperature...
Journal Articles
Journal: SPE Journal
SPE Journal 25 (02): 759–770.
Paper Number: SPE-193615-PA
Published: 16 April 2020
...Elsayed Abdelfatah; Yining Chen; Paula Berton; Robin D. Rogers; Steven L. Bryant Summary Thermal and flotation processes are widely used to produce bitumen from oil sand in Alberta. However, bitumen contains many surface‐active components that tend to form water‐in‐oil (w/o) emulsion stabilized by...
Journal Articles
Journal: SPE Journal
SPE Journal 25 (02): 883–894.
Paper Number: SPE-195310-PA
Published: 16 April 2020
... maintaining foam stability within the reservoir remains a challenge. This research evaluates the synergistic interaction of one type of nanoparticle and a surfactant to increase foam stability, using the concentration ratio of the two components to tune the affinity of the nanoparticle for the gas/liquid...
Journal Articles
Journal: SPE Journal
SPE Journal 25 (02): 969–989.
Paper Number: SPE-199347-PA
Published: 16 April 2020
... for the modeling of the process. The effect of operating conditions on the stability of emulsions in the formation is discussed. The review also covers the nature and extent of effects from emulsions on the flow mechanics through pore spaces and other flow passages that result from the well completion...
Journal Articles
Journal: SPE Journal
SPE Journal 25 (02): 587–608.
Paper Number: SPE-191625-PA
Published: 16 April 2020
... wellbore integrity flow in porous media reservoir surveillance completion installation and operations complex reservoir reservoir simulation production enhancement pressure transient testing breakthrough stability Upstream Oil & Gas stimulation acid treatment Symposium wormhole...
Journal Articles
Journal: SPE Journal
SPE Journal 25 (01): 416–431.
Paper Number: SPE-199339-PA
Published: 17 February 2020
...Songyan Li; Qun Wang; Zhaomin Li Summary Foam flooding is an important method used to protect oil reservoirs and increase oil production. However, the research on foam fluid is generally focused on aqueous foam, and there are a few studies on the stability mechanism of oil‐based foam. In this paper...
Journal Articles
Journal: SPE Journal
SPE Journal 25 (01): 406–415.
Paper Number: SPE-191318-PA
Published: 17 February 2020
..., utilization, and storage (CCUS) in mature fields. Silane‐modified hydrophilic silica nanoparticles enhance the thermodynamic stability of CO 2 foam at elevated temperatures and salinities and in the presence of oil. The aqueous nanofluid mixes with CO 2 in the porous media to generate CO 2 foam for enhanced...
Journal Articles
Journal: SPE Journal
SPE Journal 24 (06): 2681–2694.
Paper Number: SPE-194499-PA
Published: 18 December 2019
... number of water droplets in the oil also increased. This augmentation improved the effectiveness of the emulsion viscosity. Stability tests also provided evidence confirming that the nanofluids were stable for 10 days in concentrations of 0.01 and 0.1 wt% and in salinities of 1 and 0.5 wt%, respectively...
Journal Articles
Journal: SPE Journal
SPE Journal 24 (05): 2182–2194.
Paper Number: SPE-190114-PA
Published: 14 May 2019
...I.. Gavrielatos; R.. Dabirian; R.. Mohan; O.. Shoham Summary Experimental observations, during oil–production operations, regarding the formation of oil/water emulsions stabilized by nanoparticles and surfactants, are presented. Similarities and differences between the two types of emulsions are...
Journal Articles
Journal: SPE Journal
SPE Journal 24 (04): 1757–1776.
Paper Number: SPE-194215-PA
Published: 22 February 2019
... foam's stability is still limited by the current method of adding viscous polymer or the single crosslinking between the polymer and single crosslinking agent. This paper explores a simple and safe in-situ generating procedure under surface conditions by virtue of the coefficient function of the CO 2...
Journal Articles
Journal: SPE Journal
SPE Journal 24 (05): 2320–2334.
Paper Number: SPE-194197-PA
Published: 28 January 2019
... stability either monotonically decreases or increases, which are not consistent with field observations. In this paper, a fault–sliding–potential (FSP) model was developed to analyze fault stability during reservoir depletion for different types of faults. The evolution trend of fault stability with...
Journal Articles
Journal: SPE Journal
SPE Journal 23 (06): 2202–2217.
Paper Number: SPE-179702-PA
Published: 22 October 2018
... enhanced recovery ppm TDS optimal solubilization ratio Upstream Oil & Gas viscosity Phase Behavior solubilization ratio chemical flooding methods concentration salinity Oil Recovery Symposium stability surfactant microemulsion viscosity december 2018 optimal salinity Oil Recovery...

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