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Physical and mathematical modelling of waterflooding low-permeability reservoirs using surfactants
Published in Vladimir Litvinenko, Topical Issues of Rational Use of Natural Resources 2019, 2019
A.S. Sukhikh, M.K. Rogachev, A.N. Kuznetsova, A.A. Maltcev
From a technical point of view, based more on laboratory than field tests, chemical flooding of oil reservoirs is one of the most successful methods of enhanced oil recovery (EOR) in depleted reservoirs with low reservoir pressure. However, as is well known from technical literature, chemical flooding hardly pays for itself, and in most cases turns out to be unprofitable (Surguchev, 1985; Schramm, 2000; Shturn, 2004). Initially, the goal of chemical flooding was to extract additional amounts of oil left over from traditional flooding. Therefore, chemical flooding is considered as a tertiary method of oil production (Lake 1989; Khavkin, 1993). However, in the late 1980s, oil companies came to the conclusion that this method was unprofitable. Subsequently, the number of studies in this area was significantly reduced. Nevertheless, a number of research groups continued to look for ways to improve this technology by simplifying the waterflooding process, increasing the effectiveness of surfactants, and developing new reagents.
Carbon Capture and Sequestration (CCS) Technology (Basic Remarks)
Published in K. S. Birdi, Surface Chemistry of Carbon Capture, 2019
Most crude oil production technology in reservoirs consist of three distinct phases: primary, secondary, and tertiary (or enhanced) recovery. During primary recovery only about 10% of a reservoir’s original oil in place is typically produced. Secondary recovery techniques extend a field’s productive life generally by injecting water or gas to displace oil and drive it to a production wellbore, resulting in the recovery of 20% to 40% of the original oil in place.
Application of Nanofluids in Enhanced Oil Recovery: A Systematic Literature Review and Organizing Framework
Published in K.R.V. Subramanian, Tubati Nageswara Rao, Avinash Balakrishnan, Nanofluids and Their Engineering Applications, 2019
Majid Mohammadi, Mehdi Sedighi, Abdolhossein Hemmati-Sarapardeh
EOR includes several strategies intended to decrease oil saturation as well as enhance oil production [2]. On the whole, oil production is put into three levels: primary, secondary, and tertiary (improved). The latter process is referred to as EOR (see Figure 20.2).
Effect of ultrasonic homogenization on crude oil-water emulsion stability
Published in Journal of Environmental Science and Health, Part A, 2023
Nahid Hassanshahi, Guangji Hu, Kenneth Lee, Jianbing Li
Increasing crude oil production, transportation, and storage activities would lead to increased environmental risk due to oil spills and leaks on land and sea. [1] As crude oil is a complex mixture containing toxic compounds like monocyclic and polycyclic aromatic hydrocarbons, known as carcinogenic, teratogenic, and mutagenic toxic substances, [2] accidental spills can pose severe health risks to a range of biota, including humans. [3] Following its accidental release into the environment, oil emulsions may be naturally generated by mixing components to create two phases: a dispersed phase and a continuous phase (i.e., bulk phase). Oil-in-water (O/W) and water-in-oil (W/O) are the common types of emulsion. [4,5]
Experimental study of combined microemulsion/brine flooding to EOR in carbonate reservoirs
Published in Journal of Dispersion Science and Technology, 2022
Tereza Neuma de Castro Dantas, Tamyris Thaise Costa de Souza, Marcos Allysson Felipe Rodrigues, Afonso Avelino Dantas Neto, Pedro Tupã Pandava Aum
In the extracting petroleum the oil needs to flow through the porous medium from the reservoir to the well. The flow is a consequence of the pressure gradient, fluid proprieties, porous medium characteristics, and rock-fluid interaction. Oil can be recovered spontaneously using the natural energy from the reservoir (primary oil recovery method) and water or gas can be injected into the reservoir to enhance reservoir pressure and increase oil production (secondary oil recovery method). However, less than half of the initial oil-in-place can be recovered with primary and secondary oil recovery methods. Enhanced oil recovery (EOR) methods target the optimization of recovered oil by changing the proprieties of rock and fluids inside the reservoir.[1,2]
Review on microbial enhanced oil recovery in China: mechanisms, potential disadvantages, and application of genetic engineering
Published in Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2021
Bian Ziwei, Zhang Xiangchun, Wu Yiying, Wei Lusha, Wu Yifei, Wu Hanning
Tertiary oil recovery referred to as Enhanced Oil Recovery (EOR) includes gas injection, chemical injection, and thermal methods, or a combination of these methods to enhance oil production efficiency (Gutierrez and Nikolova 2019). Installation for gas injection is quite expensive, and chemical injection is environmentally invasive due to the introduction of exogenous reagents. A notable alternative tertiary technology that has recently gained interest is the Microbial Enhanced Oil Recovery (MEOR), which utilizes microbial propagation and metabolic products to increase oil production (Niu, Liu, and Lv et al. 2020). Unlike other alternative EOR, this method is simple to operate and its cost is relatively low (Kaster, Hiorth, and Kjeilen-Eilertsen et al. 2012; Safdel, Anbaz, and Daryasafar et al. 2017). Besides, it is an environmentally friendly oil recovery technique that can be used to restore oil-contaminated surfaces (Wu, Chao, and Zhao et al. 2019).