Near Wellbore and Reservoir Effects in In-Situ Combustion

Chavez, Mario-Luis Rodriguez; Glatz, Guenther; Clemens, Torsten; Kovscek, Anthony R.

doi:10.2118/174351-ms

Cited by 3 publications

(2 citation statements)

References 68 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Rodriguez studied the advancement of the fire front and the oil displacement characteristics of the fire drive during the fire flooding process. 15 Garon conducted an indoor reverse burning test and discussed the influencing factors. 16 Greaves proposed the toe-to-heel-airinjection (THAI), a way to use gravity to assist combustion.…”

Section: Trends In Petroleum Engineeringmentioning

confidence: 99%

Experimental Study of Oxygen-Rich in Situ Combustion for Heavy Oil Recovery

Guo¹

2023

TPE

View full text Add to dashboard Cite

The in-situ combustion method is the commonly used method for heavy oil production with high recovery rate and low cost. However, the characteristics of the oil oxidation reaction during in-situ combustion are still not clearly understood so far. In this study, the thermal oxidation experiment was carried out for the in-situ combustion process based on the heavy oil from Du 66 block. The results show that: the fired oil zone can be divided into the combustion zone, the coking zone, the condensation zone, the movable oil zone, etc. When the combustion front is formed, the CO2 and CO contents rise to 10% and 20%, respectively. In the expansion phase of the combustion front, the oxygen utilization rate is 83.93%, and the H/C atomic ratio is 1.413, indicating that the high temperature oxidation reaction plays the leading role. Sustained gas injection with enough intensity can ensure that the combustion front moves forward continuously, and the combustion front can drive the crude oil forward in the form of snowballing due to the extremely high oil displacement efficiency. The pressure increases as the combustion front and the movable oil zone advance, but the movable oil zone begins to decrease as it advances to the production well. Through this study, it is concluded that effective combustion front and movement of combustion front are the foundation for the formation of movable oil zone. And the movable oil zone pressurization is an important mechanism for in-situ combustion. The findings of this study can help for better understanding of the in-situ combustion oxidation mechanism and can improve the production design for heavy oil reservoirs.

show abstract

Section: Trends In Petroleum Engineeringmentioning

confidence: 99%

Experimental Study of Oxygen-Rich in Situ Combustion for Heavy Oil Recovery

Guo¹

2023

TPE

View full text Add to dashboard Cite

show abstract

“…In the Suplacu de Barcau field in Romania, cyclic steam stimulation is used to produce oil and preheat the reservoir ahead of the ISC front. 75 In short-distance displacement processes such as THAI, CAGD and MIGD, steam injection and/or steam circulation is generally required to establish a mobile oil zone between the injection and production wells, before ignition of the oil.…”

Section: Challenges and Opportunities Propagation Of Combustion Frontmentioning

confidence: 99%

Mathematical modelling of in situ combustion and gasification

Perkins

2017

Proceedings of the Institution of Mechanical Engineers, Part A:

View full text Add to dashboard Cite

The total worldwide resources of oil sands, heavy oil, oil shale and coal far exceed those of conventional light oil. In situ combustion and gasification are techniques that can potentially recover the energy from these unconventional hydrocarbon resources. In situ combustion can be used to produce oil, especially viscous and immobile crudes, by heating the oil and reducing the viscosity of the hydrocarbon liquids allowing them to flow to production wells. In situ gasification can be used to convert deep carbonaceous materials into synthesis gas which can be used at surface for power generation and petrochemical applications. While both in situ combustion for oil recovery and in situ gasification of coal have been developed and demonstrated over many decades, the commercial applications of these techniques have been limited to date. There are many physical processes occurring during in situ combustion, including multi-phase flow, heat and mass transfer, chemical reactions in porous media and geomechanics. A key tool in analysing and optimising the technologies involves using numerical models to simulate the processes. This paper presents a brief review of mathematical modelling of in situ combustion and gasification with an emphasis on developing a generalised framework and describing some of the key challenges and opportunities.

show abstract

Approach to Hydrodynamic Modeling of In-Situ Combustion in Carbonate Reservoir Based on the Results of Laboratory Studies and Preliminary Works for Pilot Test

Maksakov

Lesina

Schekoldin³

2021

Day 4 Fri, October 15, 2021

View full text Add to dashboard Cite

Summary For the purpose of this work, the authors used an integrated approach to the modeling of in-situ combustion (ISC) including the results of laboratory studies and preliminary works, which significantly affect the choice of the method for implementing ISC and the results obtained in the process of modeling. The laboratory studies provided the data on the temperature range of the beginning of high-temperature oil oxidation, which is to be achieved during the modelling of the bottomhole zone heating. Based on the resulting injectivity profile, the reservoir distribution within the injection well zone in the geological model was updated. A high-permeability channel between the injection well and one of the production wells revealed during cold water injection explains the main oil production increment resulting from ISC and demonstrated by the reservoir simulation model. Based on the results of model runs for a more uniform distribution of the effect between producing wells, the best start-up time for the most reactive well was determined. Using dynamic modeling of in-situ combustion in a carbonate reservoir, the parameters of this technology implementation were found, and incremental oil production was estimated. For the first time, the ISC technology is planned for implementation in a carbonate reservoir with high-viscosity oil in Samara region. The developed integrated approach to the dynamic modeling of in-situ combustion, which considers both the laboratory studies and preparatory work data, enables the most accurately determination of the best ISC technological parameters and this technology contribution.

show abstract

Near Wellbore and Reservoir Effects in In-Situ Combustion

Cited by 3 publications

References 68 publications

Experimental Study of Oxygen-Rich in Situ Combustion for Heavy Oil Recovery

Experimental Study of Oxygen-Rich in Situ Combustion for Heavy Oil Recovery

Mathematical modelling of in situ combustion and gasification

Approach to Hydrodynamic Modeling of In-Situ Combustion in Carbonate Reservoir Based on the Results of Laboratory Studies and Preliminary Works for Pilot Test

Contact Info

Product

Resources

About