CO2 mobility control and sweep efficiency improvement using starch gel or ethylenediamine in ultra-low permeability oil layers with different types of heterogeneity

Zhao, Fu‐Gang; Hao, Hong; Hou, Jirui; Hou, Libin; Song, Zhaojie

doi:10.1016/j.petrol.2015.05.014

Cited by 73 publications

(24 citation statements)

References 34 publications

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“…1 By contrast, CO 2 fracturing technology can be used to form fractures in reservoirs based on advantages such as a fewer environmental hazards and greater fracturing efficiency. [2][3][4] However, the lower proppant-carrying property, caused by low CO 2 viscosity, is considered the biggest challenge to application of CO 2 in fracturing technology. 1,5 To improve CO 2 viscosity, a thickener with an excellent thickening property should be added to liquid CO 2 .…”

Section: Introductionmentioning

confidence: 99%

Effect of different factors on the yield of epoxy-terminated polydimethylsiloxane and evaluation of CO₂ thickening

Wang

Dong

et al. 2018

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

Effect of different factors on the yield of epoxy-terminated polydimethylsiloxane and evaluation of CO₂ thickening

Wang

Dong

et al. 2018

RSC Adv.

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“…Many scholars have carried out the research on mitigating gas channeling. Zhao et al 17 and Hao et al 18 found that using high‐strength gel, ethylenediamine and CO 2 WAG flooding can significantly mitigate the gas channeling within major fracture and microfractures of the model they designed, and the incremental oil recovery could be more than 15% at least. P1‐1 well group of P city can consider adopting these measures to mitigate gas channeling.…”

Section: The Results and Analysis Of The Fuzzy Comprehensive Evaluationmentioning

confidence: 99%

A study on the fuzzy evaluation system of carbon dioxide flooding technology

Liu

Wang

et al. 2020

Energy Science & Engineering

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The research and application of carbon dioxide (CO2) flooding to improve enhanced oil recovery (EOR) technology has been carried out vigorously all over the world, because it not only helps meet the needs of oilfield development but also solve the problem of carbon sequestration. A comprehensive evaluation of the application of CO2 flooding technology is necessary. In this paper, the maximum membership degree method is used to construct a comprehensive evaluation model to evaluate the CO2 gas injection effect of the P1‐1 well group in the P city reservoir to verify the development effect of CO2 flooding. The factors that affect the effect of CO2 flooding include technology, management, and economic benefits. The final evaluation index system is obtained by decomposing the evaluation factors in the effect of CO2 flooding in the waterdrive petroleum reservoir and combining the relevant literature. The analytic hierarchy process (AHP) method is used to weight CO2 injection evaluation factors in the P1‐1 well group, and the results show that the CO2 flooding development effect is excellent; it is better in terms of the management and economic effect, but the score is not high.

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“…According to the composition characteristics of produced oil, there are three main stages in the process of CO 2 flooding in homogeneous reservoirs [16][17][18]. The produced oil in the early stage is not in contact with CO 2 , so its compositions are the same as the original oil compositions.…”

Section: Mechanism Of Pulse Characteristicmentioning

confidence: 99%

Study on Pulse Characteristic of Produced Crude Composition in CO₂ Flooding Pilot Test

et al. 2018

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It has been observed in many laboratory tests that the carbon number of the maximum concentration components (CNMCC) of produced oil varies monotonically with CO2 injection volume at the core scale. However, in CO2 flooding pilot test at the field scale, we find that the CNMCC is usually nonmonotonic function of CO2 injection volume, which is called “pulse characteristic” of CNMCC. To investigate the mechanism of this phenomenon, we analyze the physical process of CO2 flooding in heterogeneous reservoir and explain the reason of the pulse characteristic of CNMCC. Moreover, two 3D reservoir models with 35 nonaqueous components are proposed for numerical simulation to validate the conjecture. The simulation results show that pulse characteristic of CNMCC only occurs in the heterogeneous model, confirming that the pulse characteristic results from the channeling path between wells, which yields nonmonotonic variation of oil-CO2 mixing degree. Based on it, a new method can be developed to identify and quantify the reservoir heterogeneity.

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CO2 mobility control and sweep efficiency improvement using starch gel or ethylenediamine in ultra-low permeability oil layers with different types of heterogeneity

Cited by 73 publications

References 34 publications

Effect of different factors on the yield of epoxy-terminated polydimethylsiloxane and evaluation of CO₂ thickening

Effect of different factors on the yield of epoxy-terminated polydimethylsiloxane and evaluation of CO₂ thickening

A study on the fuzzy evaluation system of carbon dioxide flooding technology

Study on Pulse Characteristic of Produced Crude Composition in CO₂ Flooding Pilot Test

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CO2 mobility control and sweep efficiency improvement using starch gel or ethylenediamine in ultra-low permeability oil layers with different types of heterogeneity

Cited by 73 publications

References 34 publications

Effect of different factors on the yield of epoxy-terminated polydimethylsiloxane and evaluation of CO2 thickening

Effect of different factors on the yield of epoxy-terminated polydimethylsiloxane and evaluation of CO2 thickening

A study on the fuzzy evaluation system of carbon dioxide flooding technology

Study on Pulse Characteristic of Produced Crude Composition in CO2 Flooding Pilot Test

Contact Info

Product

Resources

About

Effect of different factors on the yield of epoxy-terminated polydimethylsiloxane and evaluation of CO₂ thickening

Effect of different factors on the yield of epoxy-terminated polydimethylsiloxane and evaluation of CO₂ thickening

Study on Pulse Characteristic of Produced Crude Composition in CO₂ Flooding Pilot Test