An Experimental Investigation of the In-Situ Combustion Behavior of Karamay Crude Oil

2013 ◽  
Author(s):  
Yixiu Chen ◽  
Anthony Robert Kovscek ◽  
Louis Marie Castanier ◽  
Renbao Zhao ◽  
Rongping Huang
Keyword(s):  
Experimental Investigation ◽  
Crude Oil ◽  
In Situ Combustion ◽  
Combustion Behavior

An experimental investigation of the in-situ combustion behavior of Karamay crude oil

2015 ◽  
Vol 127 ◽  
pp. 82-92 ◽  
Author(s):  
Renbao Zhao ◽  
Yixiu Chen ◽  
Rongping Huan ◽  
Louis M. Castanier ◽  
Anthony R. Kovscek
Keyword(s):  
Experimental Investigation ◽  
Crude Oil ◽  
In Situ Combustion ◽  
Combustion Behavior

Thermal effect caused by low temperature oxidation of heavy crude oil and its in-situ combustion behavior

2020 ◽  
Vol 184 ◽  
pp. 106521 ◽  
Author(s):  
Wanfen Pu ◽  
Shuai Zhao ◽  
Lingzhi Hu ◽  
Mikhail A. Varfolomeev ◽  
Chengdong Yuan ◽  
...  
Keyword(s):  
Low Temperature ◽  
Crude Oil ◽  
Thermal Effect ◽  
Heavy Crude Oil ◽  
Low Temperature Oxidation ◽  
In Situ Combustion ◽  
Temperature Oxidation ◽  
Combustion Behavior ◽  
Heavy Crude

Features of Mathematical Modeling of In-Situ Combustion for Production of High-Viscosity Crude Oil and Natural Bitumens

2015 ◽  
Vol 50 (6) ◽  
pp. 579-583 ◽  
Author(s):  
D. R. Isakov ◽  
D. K. Nurgaliev ◽  
D. A. Shaposhnikov ◽  
O. S. Chernova
Keyword(s):  
Mathematical Modeling ◽  
Crude Oil ◽  
High Viscosity ◽  
In Situ Combustion

Kinetics of Wet In-Situ Combustion: A Review of Kinetic Models

2014 ◽  
Author(s):  
E. A. Cavanzo ◽  
S. F. Muñoz ◽  
A.. Ordoñez ◽  
H.. Bottia
Keyword(s):  
Kinetic Model ◽  
Crude Oil ◽  
Kinetic Models ◽  
Combustion Front ◽  
Chemical Interaction ◽  
Combustion Process ◽  
Oxidation Reactions ◽  
In Situ Combustion ◽  
Temperature Oxidation

Abstract In Situ Combustion is an enhanced oil recovery method which consists on injecting air to the reservoir, generating a series of oxidation reactions at different temperature ranges by chemical interaction between oil and oxygen, the high temperature oxidation reactions are highly exothermic; the oxygen reacts with a coke like material formed by thermal cracking, they are responsible of generating the heat necessary to sustain and propagate the combustion front, sweeping the heavy oil and upgrading it due to the high temperatures. Wet in situ combustion is variant of the process, in which water is injected simultaneously or alternated with air, taking advantage of its high heat capacity, so the steam can transport heat more efficiently forward the combustion front due to the latent heat of vaporization. A representative model of the in situ combustion process is constituted by a static model, a dynamic model and a kinetic model. The kinetic model represents the oxidative behavior and the compositional changes of the crude oil; it is integrated by the most representative reactions of the process and the corresponding kinetic parameters of each reaction. Frequently, the kinetic model for a dry combustion process has Low Temperature Oxidation reactions (LTO), thermal cracking reactions and the combustion reaction. For the case of wet combustion, additional aquathermolysis reactions take place. This article presents a full review of the kinetic models of the wet in situ combustion process taking into account aquathermolysis reactions. These are hydrogen addition reactions due to the chemical interaction between crude oil and steam. The mechanism begins with desulphurization reactions and subsequent decarboxylation reactions, which are responsible of carbon monoxide production, which reacts with steam producing carbon dioxide and hydrogen; this is the water and gas shift reaction. Finally, during hydrocracking and hydrodesulphurization reactions, hydrogen sulfide is generated and the crude oil is upgraded. An additional upgrading mechanism during the wet in situ combustion process can be explained by the aquathermolysis theory, also hydrogen sulphide and hydrogen production can be estimated by a suitable kinetic model that takes into account the most representative reactions involved during the combustion process.

Controlled Burning of Crude Oil on Water Following the Grounding Of the Exxon Valdez

1991 ◽  
Vol 1991 (1) ◽  
pp. 213-216
Author(s):  
Alan A. Allen
Keyword(s):  
Crude Oil ◽  
Oil Spill ◽  
North Slope ◽  
Exxon Valdez ◽  
In Situ Combustion ◽  
Entire Area ◽  
Exxon Valdez Oil Spill ◽  
Original Volume ◽  
Controlled Burning

ABSTRACT During the evening of the second day following the Exxon Valdez oil spill, an estimated 15,000 to 30,000 gallons (57,000 to 114,000 L) of North Slope crude oil were eliminated using in-situ combustion techniques. The oil was collected with the 3M Company's Fire Boom, towed in a U-shaped configuration behind two fishing boats. Working with 500-foot (152-m) tow lines, a 450-foot (137-m) boom was moved at about one-half to one knot (0.26 to 0.52 m/s) through slightly emulsified oil patches downwind of the spill. Once oil had filled the downstream portion of the U-shaped boom and the boats were clear of any surrounding slicks, a gelled-fuel igniter was released from one of the tow boats. Shortly after ignition, flames gradually spread out over the entire area of the contained oil. As flames reached 200 to 300 feet (61 to 91 m) into the air, the area of the contained oil layer (and therefore the size and intensity of the fire) could be controlled by adjusting the speed of the vessels. The total burn time was approximately 75 minutes; however, the intense part of the burn lasted for about 45 minutes. The original volume of oil, likely between 15,000 and 30,000 gallons, was reduced to approximately 300 gallons (1,136 L) of stiff, taffy-like burn residue that could be picked up easily upon completion of the burn. The controlled elimination of crude oil therefore resulted in an estimated 98 percent or better efficiency of burn.

Estimation of the kinetic triplet for in-situ combustion of crude oil in the presence of limestone matrix

Fuel ◽  
2017 ◽  
Vol 209 ◽  
pp. 203-210 ◽  
Author(s):  
Milad Karimian ◽  
Mahin Schaffie ◽  
Mohammad Hassan Fazaelipoor
Keyword(s):  
Crude Oil ◽  
In Situ Combustion ◽  
Kinetic Triplet

Automation of an In-Situ Combustion Tube and Study of the Effect of Clay on the In-Situ Combustion Process

1982 ◽  
Vol 22 (04) ◽  
pp. 493-502 ◽  
Author(s):  
Shapour Vossoughi ◽  
G. Paul Willhite ◽  
William P. Kritikos ◽  
Ibrahim M. Guvenir ◽  
Youssef El Shoubary
Keyword(s):  
Thermal Analysis ◽  
Crude Oil ◽  
Combustion Process ◽  
Combustion Tube ◽  
Oxygen Utilization ◽  
Kaolinite Clay ◽  
In Situ Combustion ◽  
Adiabatic Conditions ◽  
Dsc Thermograms

Abstract A fully automated in-situ combustion apparatus supported by a minicomputer was designed, constructed, and tested.Results obtained from four adiabatic dry combustion runs to investigate the effect on clay on crude oil combustion are reported. Sand mixtures of varying clay (kaolinite) content were saturated with crude oil and water. The fourth run was performed with amorphous silica powder in the sand mixture for comparison with clay results.We concluded that the large surface area of the clays was a major contributor to the fuel deposition process. However, different oxygen utilization efficiencies obtained from both types of sand mixtures indicated that mechanisms controlling the combustion reaction also depended on the composition of the porous matrix.A thermogravimetric analyzer (TGA) and a differential scanning calorimeter (DSC) were used to obtain kinetic data on the effects of kaolinite type clay on crude oil combustion. The addition of kaolinite clay or silica powder changed the shape of the crude oil TGA/DSC thermograms significantly, but sand had no effect. The major effect on DSC thermograms was a shifting of the large amount of heat produced from a higher to lower temperature range. Reduction of activation energy caused by the addition of kaolinite clay to the crude oil indicates both catalytic and surface area effects on combustion/cracking reactions. Introduction In-situ combustion is a thermal recovery process in which a portion of the crude oil is coked and burned in situ to recover the remaining oil. Design of the process involves experimental evaluation of process variables in laboratory experiments. Variables sought experimentally for the design of the process are usually fuel availability, air requirement, oxygen utilization efficiency, combustion peak temperature, combustion front velocity, effect of porous matrix, and kinetic parameters. Four methods have been used to obtain design data for in-situ combustion projects. These include (1) adiabatic in-situ combustion tube runs, (2) isothermal reactors, (3) flood pot tests, and (4) thermal analysis techniques.This paper describes an investigation of the effect of clay on in-situ combustion involving results from adiabatic combustion tube runs and thermal analysis methods. Part 1 describes the minicomputer-based insitu combustion system developed as part of the research program. Part 2 demonstrates application of the system to study the effect of clays on the in-situ combustion process. Combustion tube runs described in Part 2 are supplemented with thermal analysis methods to evaluate the effect of clay on in-situ combustion of a Kansas crude oil. Part 1-Development of an Automated In-Situ Combustion Tube Adiabatic tube runs have been the most commonly used approach for studying in-situ combustion. Since heat loss is small to nil in thick reservoirs, in-situ combustion is assumed to occur under adiabatic conditions. Adiabatic conditions in tube runs can be achieved either by insulating the tube or by reducing the temperature gradient between the sandpack and the environment surrounding the tube, or both. To attain adiabatic conditions in a partially or noninsulated tube, the temperature of the surroundings must be raised to that of the sandpack as the combustion front moves along the tube. Heater bands with proportional heat loads controlled by individual controllers are used. This requires a large number of controllers to control the temperature of the outside SPEJ P. 493^

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