Potential Analysis of Enhanced Oil Recovery by Superheated Steam during Steam‐Assisted Gravity Drainage

Yuan, Rui; Yang, Zhengda; Bin, Guo; Wang, Xinwei; Zhang, Liqiang; Lin, Rui‐Biao

doi:10.1002/ente.202100135

Cited by 6 publications

(4 citation statements)

References 18 publications

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“…where K h is the horizontal permeability of reservoir, K v is the vertical permeability of reservoir, K ro is the relative permeability of crude oil, K rw is the relative permeability of the formation water, μ o is the formation oil, μ is the formation water viscosity, B o is the formation crude volume coefficient, B w is the formation water volume coefficient, α is the unit conversion factor, r eh is the drain radius of the horizontal parallel segment, S is the horizontal wellbore skin factor, A o is the microsegment drainage area of horizontal well, and r w is the sieve tube diameter [19][20][21][22][23].…”

Section: Model Descriptionmentioning

confidence: 99%

Numerical Simulation of Superheated Steam Flow and Heat Transfer in a Balanced Steam Injection Flow Control Device

Liu

et al. 2023

Geofluids

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Dual-string steam injection pipe is widely used in the production of superheated steam injection in heavy oil horizontal wells. Due to the nonuniform steam injection volume at the heel end and the existence of an interlayer and other factors in the reservoir, the distribution of steam cavity is not uniform, so it is necessary to control the flow of the steam injection well. Based on the basic principles of fluid mechanics and heat transfer, a three-phase nozzle outflow control device model is established in this paper. The steam flow and heat transfer law in the flow control device is numerically simulated, and the outflow dynamic law of horizontal well OCD completion in heavy oil reservoir is obtained. On this basis, the influence of OCD aperture parameters, steam injection pressure, and steam injection velocity on OCD throttling effect is studied. The results show that OCD has a good control effect on balancing pressure drop and improving steam injection uniformity. When the throttle aperture occupies 1/3 of the pipe diameter, the throttle effect is the best and the heat loss is low. Increasing the steam injection pressure can rapidly enhance the pressure reduction rate of the throttle hole. The throttling effect of increasing steam injection volume is not obvious, and the energy loss becomes higher. The study of this paper provides a reference for parameter optimization and prediction of steam distribution in the flow control device of horizontal wells.

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Section: Model Descriptionmentioning

confidence: 99%

Numerical Simulation of Superheated Steam Flow and Heat Transfer in a Balanced Steam Injection Flow Control Device

Liu

et al. 2023

Geofluids

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“…The numerical simulation of reservoirs is the most applied method to evaluate steam injection technologies to determine the optimal strategy to enhance oil recovery. An important aspect to develop a simulation model is the kinetic model that should properly represent the reactions that are carried out at in situ conditions. ,, Various kinetic models have been reported in the literature for heavy oil upgrading at steam injection conditions. ,,,− General reaction schemes for the conversion of heavy oil or bitumen into different pseudocomponents and the reactions between them have been considered. Some kinetic models have been used for numerical simulation of steam injection during the in situ upgrading of heavy oil, focusing only on the production of gases, such as H 2 S or CO 2 , and not on all pseudocomponents involved in the reaction. ,,− Some of them use a reaction scheme based on different pseudocomponents, but only the liquid phase is studied in the numerical simulation .…”

Section: Introductionmentioning

confidence: 99%

New Approach to Simulate Long-Term In Situ Aquathermolysis Reaction Combining Noncatalytic and Catalytic Kinetic Models

Félix,

Tirado,

Varfolomeev

et al. 2024

Ind. Eng. Chem. Res.

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The numerical simulation of reservoirs is usually used to develop the best strategy to implement new steam injection technologies, such as cyclic steam simulation enhanced with the use of catalysts. The efficiency of the catalyst is reduced at long periods of time, which is a drawback that the currently reported kinetic models do not consider. In this work, a novel method is proposed to predict the composition of Ashalcha heavy oil during in situ upgrading by considering noncatalytic and catalytic aquathermolysis reactions and an efficiency catalytic decay term. The new approach displayed more accurate yield predictions over longer periods of time. The production of light fractions is obtained during the catalytic and noncatalytic aquathermolysis reactions, reaching higher yields when the former predominates due to the conversion of aromatic fraction into lighter compounds. At short reaction times, the aquathermolysis reactions are mainly catalytic, and as the reaction time increases, the thermal (noncatalytic) reactions are more important. For the simulation of the reaction rate during three cycles, the efficiency of the catalyst is almost depleted in the last cycle.

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“…In the western oil field of China, there are many thick oil and super thick oil blocks. To improve recovery, in addition to using CO 2 to reduce the viscosity of the crude oil, steam is also injected to improve oil washing efficiency and wave area again [9][10][11]. Given the increased corrosion of the recovery media caused by the artificial injection of CO 2 and high-temperature steam, 316L stainless steel is used for the crude oil recovery pipeline to cope with internal corrosion.…”

Section: Introductionmentioning

confidence: 99%

Failure Analysis of the Crack and Leakage of a Crude Oil Pipeline under CO2-Steam Flooding

Song

et al. 2023

Processes

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This paper presents the failure analysis of the crack and leakage accident of a crude oil pipeline under CO2-steam flooding in the western oilfield of China. To analyze the failure behavior and cause, different testing, including nondestructive testing, chemical composition analysis, tensile property testing, metallographic analysis, and microanalysis of fracture and chloride stress corrosion cracking (SCC) testing, are applied in the present study. The obtained results showed that the pipeline under the insulation layer of high humidity, high oxygen content, and high Cl− environment occurred pit corrosion, and the stress concentration area at the bottom of the corrosion pit sprouted cracks. Besides, it is demonstrated that the cracks were much branched, mostly through the crystal, and the fracture showed brittle, which is consistent with the typical characteristics of chloride SCC. Meanwhile, the insufficient Ni content of the pipeline material promoted the process of chloride SCC, and the high-temperature working conditions also aggravated the rate of chloride SCC. In addition, efficient precautions were provided to avoid fracture.

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Potential Analysis of Enhanced Oil Recovery by Superheated Steam during Steam‐Assisted Gravity Drainage

Abstract: Figure 14. H 2 S mole fraction in the gas phase of the two schemes at the 2922th day. a) scheme 1#. b) 50 C superheat scheme.

Cited by 6 publications

References 18 publications

Numerical Simulation of Superheated Steam Flow and Heat Transfer in a Balanced Steam Injection Flow Control Device

Numerical Simulation of Superheated Steam Flow and Heat Transfer in a Balanced Steam Injection Flow Control Device

New Approach to Simulate Long-Term In Situ Aquathermolysis Reaction Combining Noncatalytic and Catalytic Kinetic Models

Failure Analysis of the Crack and Leakage of a Crude Oil Pipeline under CO2-Steam Flooding

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