scholarly journals Little Tom Thermal Recovery Demonstration Project, Zavala County, Texas. Final report. [In-situ combustion/water injection]

1977 ◽  
Author(s):  
E.T. Ireton ◽  
F.S. Johnson
Keyword(s):  
Water Injection ◽  
Thermal Recovery ◽  
Demonstration Project ◽  
Final Report ◽  
In Situ Combustion

Application and Exploration of Early In-Situ Combustion Huff-and-Puff Technology in a Deep Undisturbed Reservoir with Extra Heavy Oil

2021 ◽  
pp. 1-13
Author(s):  
Wang Xiaoyan ◽  
Zhao Jian ◽  
Yin Qingguo ◽  
Cao Bao ◽  
Zhang Yang ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Heavy Oil ◽  
Gas Injection ◽  
Thermal Recovery ◽  
Oil Field ◽  
Pilot Test ◽  
In Situ Combustion ◽  
Coiled Tubing

Summary Achieving effective results using conventional thermal recovery technology is challenging in the deep undisturbed reservoir with extra-heavy oil in the LKQ oil field. Therefore, in this study, a novel approach based on in-situ combustion huff-and-puff technology is proposed. Through physical and numerical simulations of the reservoir, the oil recovery mechanism and key injection and production parameters of early-stage ultraheavy oil were investigated, and a series of key engineering supporting technologies were developed that were confirmed to be feasible via a pilot test. The results revealed that the ultraheavy oil in the LKQ oil field could achieve oxidation combustion under a high ignition temperature of greater than 450°C, where in-situ cracking and upgrading could occur, leading to greatly decreased viscosity of ultraheavy oil and significantly improved mobility. Moreover, it could achieve higher extra-heavy-oil production combined with the energy supplement of flue gas injection. The reasonable cycles of in-situ combustion huff and puff were five cycles, with the first cycle of gas injection of 300 000 m3 and the gas injection volume per cycle increasing in turn. It was predicted that the incremental oil production of a single well would be 500 t in one cycle. In addition, the supporting technologies were developed, such as a coiled-tubing electric ignition system, an integrated temperature and pressure monitoring system in coiled tubing, anticorrosion cementing and completion technology with high-temperature and high-pressure thermal recovery, and anticorrosion injection-production integrated lifting technology. The proposed method was applied to a pilot test in the YS3 well in the LKQ oil field. The high-pressure ignition was achieved in the 2200-m-deep well using the coiled-tubing electric igniter. The maximum temperature tolerance of the integrated monitoring system in coiled tubing reached up to 1200°C, which provided the functions of distributed temperature and multipoint pressure measurement in the entire wellbore. The combination of 13Cr-P110 casing and titanium alloy tubing effectively reduced the high-temperature and high-pressure oxygen corrosion of the wellbore. The successful field test of the comprehensive supporting engineering technologies presents a new approach for effective production in deep extra-heavy-oil reservoirs.

State-of-the-Art of Thermal Recovery Models

1981 ◽  
Vol 103 (4) ◽  
pp. 296-300
Author(s):  
S. M. Farouq Ali ◽  
J. Ferrer
Keyword(s):  
Oil Recovery ◽  
Input Data ◽  
State Of The Art ◽  
Front Tracking ◽  
Steam Injection ◽  
Thermal Recovery ◽  
In Situ Combustion ◽  
Cyclic Steam Stimulation ◽  
Recovery Models

Thermal recovery models for oil recovery consist of steam injection and in-situ combustion simulators. At the present time, steam injection simulators have been developed to a point where it is possible to reliably simulate portions of a fieldwide flood. Cyclic steam stimulation simulation still entails a number of questionable assumptions. Formation parting cannot be simulated in either case. In-situ combustion simulators lack the capability for front tracking. Even though the models are rather sophisticated, process mechanism description and input data are inadequate.

Recovery of light oil using in situ combustion thermal recovery methods

Energy ◽  
1989 ◽  
Vol 14 (3) ◽  
pp. 153-159 ◽  
Author(s):  
M.O. Onyekonwu ◽  
G.K. Falade
Keyword(s):  
Thermal Recovery ◽  
In Situ Combustion ◽  
Light Oil ◽  
Recovery Methods

On Some Chemico-Mineralogical Transformations in a Petroleum Reservoir Exploited by In-situ Combustion

2017 ◽  
Vol 68 (2) ◽  
pp. 311-316
Author(s):  
Gheorghe Branoiu ◽  
Tudora Cristescu
Keyword(s):  
Combustion Zone ◽  
Thermal Recovery ◽  
Petroleum Reservoir ◽  
Hydrothermal Conditions ◽  
In Situ Combustion ◽  
The Matrix ◽  
Recovery Technique ◽  
Calcium Silicates ◽  
Siliciclastic Rocks

In-situ combustion is a thermal recovery technique in which a part of the heavy oil in place is burnt to generate heat. This heat brings about a reduction in viscosity of the crude oil to lead to the improvement of the mobility and hence oil production rate and recovery. Typical combustion front moves slow (some cm/day) through reservoir matrix (pores) by consuming the fuel as it moves ahead. The combustion zone is often a few centimeters in thickness and it has a temperature up to 700-800oC. The hydrothermal conditions that occur in front of and behind the combustion zone may generate chemico-mineralogical transformations following or not from a new minerals forming. In the paper the authors emphasize for the first time calcium silicates hydrate forming in the matrix of siliciclastic rocks from oil reservoirs exploited by in-situ combustion.

A Numerical Simulation Model for Thermal Recovery Processes

1979 ◽  
Vol 19 (01) ◽  
pp. 37-58 ◽  
Author(s):  
R.B. Crookston ◽  
W.E. Culham ◽  
W.H. Chen
Keyword(s):  
Heat Transfer ◽  
Numerical Model ◽  
Combustion Zone ◽  
Combustion Process ◽  
Thermal Recovery ◽  
Water Flooding ◽  
Computational Results ◽  
In Situ Combustion ◽  
Recovery Processes

Abstract This paper describes a model for numerically simulating thermal recovery processes. The primary locus is on the simulation of in-situ combustion, but the formulation also represents fire-and-water flooding, steamflooding, hot water flooding, steam stimulation, and spontaneous ignition as well. The simulator describes the flow of water, oil, and gas, and includes gravity and capillary effects. Heat transfer by conduction, convection, and vaporization-condensation of both water and hydrocarbons are included. The rigorous but general nature of the simulator is obtained by employing conservation balance equations for oxygen, inert gases, a light hydrocarbon pseudocomponent, a heavy hydrocarbon pseudocomponent, water, coke, and energy. pseudocomponent, water, coke, and energy. Vaporization-condensation is governed by vaporliquid equilibrium using temperature and pressure-dependent equilibrium coefficients. Four pressure-dependent equilibrium coefficients. Four chemical reactions are accounted for: formation of coke from the heavy hydrocarbon component and the oxidation of coke and both heavy and light hydrocarbon components. Formulation details, numerical solution procedures, and computational results are presented. procedures, and computational results are presented. The computational results include both one- and two-dimensional cross-sectional studies. The simulator represents a major improvement in the ability to simulate thermal recovery processes under complex conditions. Introduction Considerable progress has been made in numerically simulating thermally enhanced oil-recovery processes during the last few years. This is particularly true for-processes involving steam, where we have seen a continual improvement of our ability to treat the problem. The most recent contributions provide an analysis capability for steam displacement and steam stimulation recovery methods, accounting for all the important physical mechanisms of these processes. Progress in simulating the performance of in-situ combustion processes is not so advanced. Initial simulation attempts were concerned primarily with the heat-transfer aspects of combustion. The most sophisticated heat-transfer model was developed by Chu. His numerical model considers the energy effects of vaporization and condensation on the temperature distribution, but neglects the accompanying phase changes by assuming constant fluid saturations. More recent heat transfer or heat-wave models for the in-situ combustion process were proposed by Kuo in 1969 and by Smith and Farouq-Ali in 1971. Kuo's model allows two temperature fronts-one at the combustion zone and one at a heat front. The heat-front position is predicted by gas flow that is allowed to have a velocity different from the velocity of the combustion front. The simulator proposed by Smith and Farouq-Ali is designed for proposed by Smith and Farouq-Ali is designed for predicting sweep efficiencies in confined well predicting sweep efficiencies in confined well patterns. Their numerical model accounts for heat patterns. Their numerical model accounts for heat generation by a combustion zone (assuming fixed fuel content all through the reservoir), heat transfer by conduction and convection (single-phase gas flow) in the reservoir, heat losses by conduction to adjacent formations, and different permeability-to-gas (air) flow on either side of the combustion zone. Special cases of the in-situ combustion process were studied by Gottfried and Khelil. These authors examine the heat transfer and oxygen use in reservoirs composed of an oil-bearing layer and an overlying "clean" porous zone containing only gas. These models were designed primarily to investigate the various transport mechanisms present when combustion is initiated in a reservoir present when combustion is initiated in a reservoir containing a gas cap. Because of the many assumptions invoked and the specialized geometry to which they apply, they do not satisfy the need for a general purpose simulator. SPEJ P. 37

scholarly journals Pressure and pressure derivative analysis without type-curve matching for thermal recovery processes

2011 ◽  
Vol 4 (4) ◽  
pp. 23-35 ◽  
Author(s):  
Freddy Humberto Escobar ◽  
Angela Patricia Zambrano ◽  
Diana Vanessa Giraldo ◽  
José Humberto Cantillo
Keyword(s):  
Oil Recovery ◽  
Outer Region ◽  
Main Tool ◽  
Thermal Recovery ◽  
Curve Matching ◽  
Oil Viscosity ◽  
Pressure Derivative ◽  
Type Curve ◽  
In Situ Combustion

In recent years, a constant increase of oil prices and declining reserves of coventional crude oils have produced those deposits of lights to be considered economically unattractive to be produced as an alternative way to keep the world´s oil supply volume. Heavy oil deposits are mainly characterized by having high resistance to flow (high viscosity), which makes them diffi-cult to produce. Since oil viscosity is a property that is reduced by increasing the temperature, thermal recovery techniques -such as steam injection or in-situ combustion- have become over the years the main tool for tertiary recovery of these oils. Composite reservoirs can occur naturally or may be artificially created. Changes in reservoir width, facies or type of fluid (hydraulic contact) forming two different regions are examples of two-zone composite reservoirs occurring naturally. On the other hand, such enhanced oil recovery projects as waterflooding, polymer floods, gas injection, in-situ combustion, steam drive, and CO2 miscible artificially create conditions where the reservoir can be considered as a composite system. A reservoir undergoing a thermal recovery process is typically idealized as a two-zone composite reservoir, in which, the inner region represents the swept region surrounding the injection well and the outer region represents the larger portion of the reservoir. Additionally, there is a great contrast between the mobilities of the two zones and the storativity ratio being different to one. In this work, the models and techniques developed and implemented by other authors have been enhanced. Therefore, the interpretations of the well tests can be done in an easier way, without using type-curve matching. A methodology which utilizes a pressure and pressure derivative plot is developed for reservoirs subjected to thermal recovery so that mobilities, storativity ratio, distance to the radial discontinuity or thermal front and the drainage area can be estimated. The precedence of the heat source (in-situ combustion or hot injected fluids) does not really matter for the application of this methodology; however, this was successfully verified by its application to synthetic and field examples of in-situ combustion. The point of comparison was the input data used for simulation for the synthetic case and the results from simulation matching and from previous studies for the field cases.

Mechanical performance of casing in in-situ combustion thermal recovery

2018 ◽  
Vol 168 ◽  
pp. 32-38 ◽  
Author(s):  
Shangyu Yang ◽  
Lihong Han ◽  
Chun Feng ◽  
Hang Wang ◽  
Yaorong Feng ◽  
...  
Keyword(s):  
Mechanical Performance ◽  
Thermal Recovery ◽  
In Situ Combustion
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