The effect of organic matter maturity on kinetics and product distribution during kerogen thermal decomposition: the Bazhenov Formation case study

Leushina, E.; Mikhaylova, Polina; Kozlova, Elena; Polyakov, V. B.; Morozov, Nikita; Spasennykh, М.

doi:10.1016/j.petrol.2021.108751

Cited by 12 publications

(2 citation statements)

References 34 publications

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“…Moreover, water serves as a catalyst for thermal reactions . Existing experimental and numerical studies imply that hot water (subcritical or supercritical fluid) injection may potentially lead to a significant increase in oil recovery from oil shale formations due to the increased porosity and permeability and the realization of kerogen’s ability to generate oil ,− depending on its type and level of thermal maturity . It should be noted that hot water is potentially an eco-friendly EOR agent, although well operation should nevertheless be performed very carefully to avoid possible risks.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Oil Recovery Method Selection for Shale Oil Based on Numerical Simulations

et al. 2021

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As unconventional reserves, oil shale deposits require additional oil recovery techniques to achieve favorable production levels. The efficiency of a shale reservoir development project is highly dependent on the application of enhanced oil recovery (EOR) techniques. There are many studies devoted to discrete investigations of each EOR method. Most of them claim that one particular method is particularly effective in increasing oil recovery. Despite the wealth of such research, it remains hard to say with certainty which technique would be the most effective when applied in the extraction of unconventional reserves. In this work, we aim to answer this question by means of a comparative study. Three EOR methods were applied and analyzed in the same environment, a single target objectan oil field in Western Siberia characterized by ultra-low permeability (0.03 mD on average) and high organic content. Methods involving huff-and-puff injection of a surfactant solution, hydrocarbon gas, and hot water were studied using numerical reservoir simulations based on preceding laboratory experiments. A single horizontal well having undergone nine-stage hydraulic fracturing was used as the field site model. The comparative calculations of cumulative oil production over an 8-year period revealed that the injection of hot (supercritical) water led to the highest oil recovery in the target shale reservoir. Each EOR method was implemented using the best operation scenario. All three cases resulted in an increase in cumulative oil production compared to the depletion mode, though the efficiency was distinctly different. Twenty-six percent more oil was obtained after hot water injection, 16% after hydrocarbon gas, and 12% after a surfactant solution. Simulation of a hot water huff-and-puff operation over a longer period (43 years) led to a level of oil production 3 times higher than depletion. The drawbacks of each EOR method on the shale site are discussed in the results. A possible solution was proposed for preventing the negative effects of heat loss and water blockage incurred from hot water injection. The comparative study concludes that hot water injection should lead to the highest volume of oil recovery. The conclusions drawn are suggested to be relevant for similar shale fields.

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Section: Introductionmentioning

confidence: 99%

Enhanced Oil Recovery Method Selection for Shale Oil Based on Numerical Simulations

et al. 2021

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“…Most studies on the mechanism of organic-inorganic interfaces have focused on small organic molecules in single size nanopore, but the physicochemical properties of organic macromolecules have not been well studied. The pyrolysis behavior of organic macromolecules inside nanopores is related to the pathway of the cracking of natural petroleum organic matter inside nanopores to form petroleum and natural gas small hydrocarbon molecules (Cao et al, 2021;Leushina et al, 2021). The features of source rock hydrocarbon generation, expulsion, and retention are essential factors in evaluating petroleum resource potential (Wang et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Pyrolytic Behavior of Long-Chain Alkyl Quaternary Ammonium Bromide Inside Nanopores

Niu

Yang

et al. 2021

Front. Energy Res.

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The pyrolytic behavior of organic matter inside nanopores was studied by simultaneous thermogravimetric/differential scanning calorimetry analyzer coupled with Fourier transform infrared spectroscopy (STA/TG-FTIR). Nanoporous silica was prepared by a hydrothermal method using long-chain alkyl quaternary ammonium bromide (CnTAB, n = 12, 14) as a template. The pyrolytic behavior of CnTAB inside nanopores with different diameters was investigated and compared with that of CnTAB inside and outside nanopores. The results showed that the pyrolytic removal process consisted of the following features: 1) CnTAB underwent carbon chain decomposition and oxidation; 2) the DSC exothermal peak of CnTAB came mainly from its oxidative combustion, and the oxidative combustion temperature decreased with increasing pore size; 3) the CnTAB inside nanopores underwent crystallization–amorphous state phase transition, and CnTAB got trapped inside the calcined nanopores. In addition, the pyrolytic behavior of CnTAB inside the calcined nanopores was found to be similar to that of the uncalcined nanopores. This study aims to understand the storage and transformation processes of organic hydrocarbons under nanopore-confinement effect.

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Thermodynamic Modeling of Stage Formation of Oil from Type II Kerogen

Sidkina

Мироненко

2023

Advances in Geochemistry, Analytical Chemistry, and Planetary Sciences

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The effect of organic matter maturity on kinetics and product distribution during kerogen thermal decomposition: the Bazhenov Formation case study

Cited by 12 publications

References 34 publications

Enhanced Oil Recovery Method Selection for Shale Oil Based on Numerical Simulations

Enhanced Oil Recovery Method Selection for Shale Oil Based on Numerical Simulations

Pyrolytic Behavior of Long-Chain Alkyl Quaternary Ammonium Bromide Inside Nanopores

Thermodynamic Modeling of Stage Formation of Oil from Type II Kerogen

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