Insights into the deoiling efficiency of oil-based cuttings by surfactant-free microemulsions

Jiang, Guobin; Li, Jing; Zhao, Liang; Tian, Meng; Yu, Jinlei; Wang, Hongjuan; Hu, Jinyan; Xu, Bingke

doi:10.1016/j.jece.2022.107306

Cited by 14 publications

(9 citation statements)

References 31 publications

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“…3 white oil in the recovered oil after the use of SFMEs to clean OBDCs, which is similar to the results of this study. [19] Figure 6 (a, b) statistically analyzed the relative abundance and quantity of CH and CHO organic matter in recovered oil and 110# industrial white oil. The recovered oil contained CH and CHO organic matter, among which the relative abundance and species of CHO organic matter were 432.33 and 853, respectively, both higher than CH organic matter.…”

Section: Quality Analysis Of Recovered Oilmentioning

confidence: 99%

“…[15][16][17][18] However, there are many surfactants in traditional microemulsions, which makes it difficult to release petroleum pollutants encapsulated in microemulsions through demulsification after treatment. [19] The recovery effect of microemulsions and petroleum pollutants is poor, and there is a certain risk of secondary pollution. Some studies have shown that microemulsions can be prepared by ternary mixtures of water, petroleum and amphiphilic solvents without surfactants (SFMEs).…”

Section: Introductionmentioning

confidence: 99%

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Conversion Mechanism of Organic Matter While Cleaning Oil‐Based Drilling Cuttings Using Surfactant‐Free Microemulsions

Li,

Yue,

Wen

et al. 2023

ChemistrySelect

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Surfactant‐free microemulsions (SFMEs) cleaning technology can effectively separate and recover petroleum pollutants from oil‐based drilling cuttings (OBDCs). The identification of the molecular composition of OBDCs is helpful to accurately grasp the conversion mechanism of organic matter. Therefore, the understanding of the mechanism of petroleum removal at the microscopic molecular level in the cleaning process needs to be further studied. The conversion mechanism of organic matter during the use of SFMEs to clean OBDCs was investigated by positive ion atmospheric pressure photoionization Fourier transform ion cyclotron resonance mass spectrometry (+APPI FT‐ICR MS). The results show that the SFMEs cleaning technology can separate and recover CH and CHO organic matter in OBDCs, but there is still a small amount of organic matter with high molecular weight and unsaturated degree in OBDCs that has not been separated. The majority of this organic matter is CH, accounting for 91 %, and it is mainly polycyclic aromatic hydrocarbons. A total of 255 kinds of organic matter in 110# industrial white oil were detected in the recovered oil after treatment, accounting for more than 99 % of the total, which has a certain recoverable value. This study can provide a theoretical reference for the efficient degradation of OBDCs.

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Section: Quality Analysis Of Recovered Oilmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Conversion Mechanism of Organic Matter While Cleaning Oil‐Based Drilling Cuttings Using Surfactant‐Free Microemulsions

Li,

Yue,

Wen

et al. 2023

ChemistrySelect

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“…37 Jiang et al proposed the extraction application of CO 2 -responsive SFME consisting of hexane/ tert-butanol/water in cleaning oil-based cuttings. 38 Xu et al realized the cleaning of oily drill cuttings using CO 2 -responsive SFME and described the oil washing process briefly. 39 While the recycling of SFME for oil removal and response mechanism are rarely reported.…”

Section: ■ Introductionmentioning

confidence: 99%

Sustainable Utilization of Surfactant-Free Microemulsion Regulated by CO₂ for Treating Oily Wastes: A Interpretation of the Response Mechanism

Song,

Jia,

Zhang

et al. 2023

Langmuir

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Surfactant-free microemulsions (SFMEs) have been explored extensively to avoid the residual surfactant problem caused by traditional surfactant microemulsions. Many researchers focused on the SFMEs with tertiary amine, which exhibited the typical CO 2 response behavior. In this study, the phase diagram of the SFMEs consisting of tripropylamine (TPA), ethanol, and water was readily prepared via the measurements of electrical conductivity. The CO 2 response behavior of SFME was confirmed by determination of conductivity and measurement of the average diameter of SFME, which was mainly dependent on the protonation of TPA induced by the additional CO 2 . The transition of protonated TPA to a more hydrophilic nature from lipophilicity to hydrophilicity should be responsible for the variation of SFME average diameter. In addition, the SFMEs exhibited remarkable solubilizing capacity of crude oil, and three types of SFMEs achieved more than 80% oil removal rate in the washing process of oil sands. It was noted that both oil-in-water and bicontinuous SFMEs could be circularly utilized at least three times with a relatively high oil removal rate (%). Our work provided the insight perspective on the mechanism of SFMEs with a CO 2 response behavior.

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“…Compared with the current surfactant cleaning method, microemulsion can significantly improve the solubility of heavy oil, which has become a research focus of oil-based pulp cleaning. It has been shown that microemulsions can effectively remove oil and synthetic-based muds while effectively changing water wettability to remove oil films from casing and formation. , Gentle stirring and mixing of n -hexane/ tert -butanol/water can form a cleaning agent of surfactant-free microemulsions, where the oil content of oil-based mud after cleaning is less than 1% . However, microemulsions are isotropic and thermodynamically stable mixtures, so the solution-increasing properties also result in the difficulty of separating and collecting petroleum hydrocarbons, resulting in secondary waste of oil-containing microemulsions …”

Section: Introductionmentioning

confidence: 99%

“…9,10 Gentle stirring and mixing of n-hexane/tert-butanol/water can form a cleaning agent of surfactant-free microemulsions, where the oil content of oil-based mud after cleaning is less than 1%. 11 However, microemulsions are isotropic and thermodynamically stable mixtures, so the solution-increasing properties also result in the difficulty of separating and collecting petroleum hydrocarbons, resulting in secondary waste of oilcontaining microemulsions. 12 If oily wastewater is discharged directly into the outside world without any treatment, it will pollute rivers and groundwater.…”

Section: ■ Introductionmentioning

confidence: 99%

CO₂-Repurification Microemulsion Detergent for Oil-Based Slurry Cleaning

Yue

et al. 2023

Langmuir

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In order to solve problems such as environmental pollution and pipeline blockage caused by oily wastewater after washing, N,N-dimethylcyclohexylamine (DMCHA) with CO 2 response was selected as the oil phase, and an O/W microemulsion wellbore cleaning fluid with CO 2 switching characteristics was successfully prepared with erucamide propyl betaine (EAB-40), sodium dodecyl benzene sulfonate (SDBS), n-butanol, silicone defoamer, and water. The water content of the microemulsion was 89.99%, and it had good stability at 40 and −5 °C. The emulsion was rapidly demulsified after being injected with CO 2 in the CO 2 -repurification microemulsion detergent, and CO 2 was removed with a N 2 detergent. The emulsion was restored to its original state, which demonstrated the CO 2 /N 2 switching properties of the emulsion. It is proven that the switching microemulsion has a good wetting transformation ability by cleaning the steel sheet and quartz sheet contaminated by oil-based slurry. The switching microemulsion system can clean the simulated wellbore contaminated by oil-based slurry, and the cleaning efficiency is above 99%. CO 2 can be used at room temperature to separate oil and water from oily wastewater after cleaning.

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Insights into the deoiling efficiency of oil-based cuttings by surfactant-free microemulsions

Cited by 14 publications

References 31 publications

Conversion Mechanism of Organic Matter While Cleaning Oil‐Based Drilling Cuttings Using Surfactant‐Free Microemulsions

Conversion Mechanism of Organic Matter While Cleaning Oil‐Based Drilling Cuttings Using Surfactant‐Free Microemulsions

Sustainable Utilization of Surfactant-Free Microemulsion Regulated by CO₂ for Treating Oily Wastes: A Interpretation of the Response Mechanism

CO₂-Repurification Microemulsion Detergent for Oil-Based Slurry Cleaning

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Insights into the deoiling efficiency of oil-based cuttings by surfactant-free microemulsions

Cited by 14 publications

References 31 publications

Conversion Mechanism of Organic Matter While Cleaning Oil‐Based Drilling Cuttings Using Surfactant‐Free Microemulsions

Conversion Mechanism of Organic Matter While Cleaning Oil‐Based Drilling Cuttings Using Surfactant‐Free Microemulsions

Sustainable Utilization of Surfactant-Free Microemulsion Regulated by CO2 for Treating Oily Wastes: A Interpretation of the Response Mechanism

CO2-Repurification Microemulsion Detergent for Oil-Based Slurry Cleaning

Contact Info

Product

Resources

About

Sustainable Utilization of Surfactant-Free Microemulsion Regulated by CO₂ for Treating Oily Wastes: A Interpretation of the Response Mechanism

CO₂-Repurification Microemulsion Detergent for Oil-Based Slurry Cleaning