Experimental study on the viscosity reduction of heavy oil by using of a new type of micro-emulsion

Yang, Changhua

doi:10.1080/10916466.2019.1587459

Cited by 2 publications

(2 citation statements)

References 14 publications

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“…In the process of gradual emulsion, the removed membrane oil formed emulsion droplets, which had better mobility in the porous media. As shown in Figure b,c, the process of membrane oil removal and gradual emulsion could make the percolation channels from dark to bright in the SSZ, which means that the two processes play an important role in improving the displacement efficiency of the reservoir. , …”

Section: Resultsmentioning

confidence: 99%

“…As shown in Figure 12b,c, the process of membrane oil removal and gradual emulsion could make the percolation channels from dark to bright in the SSZ, which means that the two processes play an important role in improving the displacement efficiency of the reservoir. 32,33 When the concentration of FMP solution is low in the reservoir, the processes of flocculation into droplet groups and agglomeration into droplets are easy to occur, which leads to the generation of large emulsion droplets. 34−36 Large emulsion droplets are stuck in the pore-throat of the SSZ, which causes the blockage zone to appear.…”

Section: T H Imentioning

confidence: 99%

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Visual Filling Model Experiment Study on the Enhanced Oil Recovery Mechanism of Novel Polymer Viscosity Reducer Flooding in Heavy Oil Reservoirs

Liu

Wang

et al. 2021

ACS Omega

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Chemical flooding is an effective method to enhance heavy oil recovery, and the viscosity reducer is often injected into the formation as the main reagent of chemical flooding. In the paper, a novel polymer viscosity reducer (FMP) was used to inject into a visual filling model, which can simulate the reservoir. The mechanism of enhancing heavy oil recovery by FMP is studied by macroscopic and microscopic analysis methods. The model can obtain macroscopic images and production data, including pressure, water cut, and oil recovery. The model can observe some microscopic processes, which can analyze the mechanism of enhanced oil recovery. Five processes of emulsifying viscosity reduction are summarized by using microscopic images: membrane oil removal, gradual emulsification, flocculation into droplet groups, active dispersion, and agglomeration into droplets. The FMP molecules can affect the interfacial properties of oil, water, and rock to enhance the wishing oil efficiency. Moreover, the decrease in the stability of the oil–water interface leads to flocculation into droplet groups and agglomeration into droplets occurring at the throat of the strong seepage zone, which increases the sweep coefficient from 0.56 to 0.90. The oil recovery has increased from 18 to 34%, which indicates that the FMP flooding obviously enhances the effect of heavy oil reservoir development.

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Section: Resultsmentioning

confidence: 99%

Section: T H Imentioning

confidence: 99%

Visual Filling Model Experiment Study on the Enhanced Oil Recovery Mechanism of Novel Polymer Viscosity Reducer Flooding in Heavy Oil Reservoirs

Liu

Wang

et al. 2021

ACS Omega

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Emulsifiers for reducing viscosity of highly viscous oil from Tahe 10 oilfield

Sun

Liu²,

2020

IOP Conf. Ser.: Earth Environ. Sci.

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The viscosity of original heavy oil increases with the decrease of temperature in the process of wellbore lifting, which makes it more difficult to lift the wellbore for Tahe 10 area reservoir, so emulsification and viscosity reduction technology is studied. The carboxymethyl polyoxyethylene alkyl alcohol ether surfactant containing different oxyethylene chains is an emulsifier with excellent tolerance of high temperature and salt. The researches indicate the compounded system of OPC-20 and DSB at 4:6 can significantly improve the solubility of OPC-20 in high-temperature brine, and it also has a good emulsification performance for Tahe heavy oil.

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Experimental study on the viscosity reduction of heavy oil by using of a new type of micro-emulsion

Cited by 2 publications

References 14 publications

Visual Filling Model Experiment Study on the Enhanced Oil Recovery Mechanism of Novel Polymer Viscosity Reducer Flooding in Heavy Oil Reservoirs

Visual Filling Model Experiment Study on the Enhanced Oil Recovery Mechanism of Novel Polymer Viscosity Reducer Flooding in Heavy Oil Reservoirs

Emulsifiers for reducing viscosity of highly viscous oil from Tahe 10 oilfield

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