Results 1 to 10 of about 9,741 (149)

Oscillating Back Pressure Regulator (OBPR) for High-Pressure Core Flooding [PDF]

open access: yesE3S Web of Conferences, 2023
The challenge in the core analysis industry is the availability of a versatile back pressure regulator (BPR) that can operate efficiently at ultra-low or no-flow conditions at very high pressure.
Dubey Sanjay   +4 more
doaj   +1 more source

Experimental characterization of colloidal silica gel for water conformance control in oil reservoirs

open access: yesScientific Reports, 2022
High water production in oil fields is an area of concern due to economic issues and borehole/wellhead damages. Colloidal gels can be a good alternative to polymers to address this as they can tolerate harsh oil reservoir conditions.
Zahra Ghaffari   +4 more
doaj   +1 more source

A Mechanistic Study of Wettability Alterations in Sandstone by Low Salinity Water Injection (LSWI) and CO2 Low Salinity Water-Alternating-Gas (WAG) Injection [PDF]

open access: yesE3S Web of Conferences, 2023
Low salinity water injection (LSWI), an emerging Enhanced Oil Recovery (EOR) method, has proven to be effective in increasing oil recovery by wettability alteration. As low salinity water is injected into the reservoir, the pre-established equilibrium is
Ma Shijia, James L.A.
doaj   +1 more source

Viscous fingering and its effect on areal sweep efficiency during waterflooding: an experimental study

open access: yesPetroleum Science, 2018
Viscous fingering is one of the main challenges that could reduce areal sweep efficiency during waterflooding in oil reservoirs. A series of waterflooding experiments were carried out in a Hele-Shaw cell at ambient temperature during which areal sweep ...
Zahra Kargozarfard   +2 more
doaj   +1 more source

Research on foaming agents for gas flooding in medium-temperature and high-salinity clastic reservoirs [PDF]

open access: yesE3S Web of Conferences, 2023
Anionic surfactants are commonly used as foaming agents in foam-enhanced oil recovery, but their performance is seriously affected by high temperature and high salinity environment.
Li Kexin   +4 more
doaj   +1 more source

Measuring the EoR Power Spectrum without Measuring the EoR Power Spectrum [PDF]

open access: yesThe Astrophysical Journal, 2019
10 pages, 2 figures, accepted in ApJ; comments welcome; updated to match accepted ...
Angus Beane   +2 more
openaire   +2 more sources

Study on the influence of different key parameters on EOR in LB block [PDF]

open access: yesE3S Web of Conferences, 2023
The high temperature reservoir is in the high water cut stage after long-term development, and the inefficiency or invalid circulation caused by injected water is aggravated. With a long development history, the well pattern has been adjusted many times,
Wang Qunyi   +4 more
doaj   +1 more source

Application of multilateral wells with limited sand production to heavy oil reservoirs

open access: yesPetroleum Exploration and Development, 2008
Multilateral wells with limited sand production are proposed to produce offshore heavy oil reservoirs. This technique was studied through lab experiments and numerical simulation.
Shou-wei ZHOU   +3 more
doaj   +1 more source

The molecular explanation for polyacrylamide viscosity reduction in high-salinity formation-water

open access: yesAIP Advances, 2021
Many oilfields report that the viscosity of polymers in high-salinity reservoirs will decrease significantly. In this paper, molecular dynamics simulations were conducted to investigate the molecular configuration and network of hydrolyzed polyacrylamide
Shu Yang, Tao Ma, Yingfu He, Xin Su
doaj   +1 more source

Enhancing the spontaneous imbibition rate of water in oil-wet dolomite rocks through boosting a wettability alteration process using carbonated smart brines

open access: yesPetroleum Science, 2019
Most fractured carbonate oil reservoirs have oil-wet rocks. Therefore, the process of imbibing water from the fractures into the matrix is usually poor or basically does not exist due to negative capillary pressure.
Ehsan Ghandi   +2 more
doaj   +1 more source

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