A laboratory study of single-well steam-assisted gravity drainage process

An investigation of the optimization of startup procedure for single-well steam-assisted gravity drainage (SW-SAGD) was made as the project economics are influenced significantly by the early production response. An experimental investigation of two early-time processes namely cyclic steam injection and steam circulation to improve reservoir heating is discussed and compared to continuous steam injection as well as other well configurations like vertical injector-horizontal producer and horizontal injector- horizontal producer. Crushed limestone saturated with heavy oil (12.8degrees API) and water was packed in a laboratory model for the experiments. The effectiveness of the methods is compared within themselves and to conventional steam-assisted gravity drainage (SAGD) by measuring the size of the steam chamber as a function of time, The steam chamber area for cyclic steam injection is slightly greater than that of steam circulation case. Furthermore, numerical simulation studies of different early-time processes were conducted and compared to the experimental data using a commercial simulator. It was observed that the numerical model results underestimated the cumulative oil recovery and the steam chamber size. Results from this study, including cumulative recoveries, temperature distributions, and production rates display the differences between the methods.


Development of a decision support system for optimal instrumentation of concrete faced rockfill dams
Arı, Onur; Yanmaz, Ali Melih; Department of Civil Engineering (2016)
In this study, an algorithm for optimal design of instrumentation systems for concrete faced rockfill dams was developed. The aim of this algorithm is to determine the number and the location of individual instruments for stress monitoring. It was intended to develop a user-friendly and flexible algorithm that would be applicable in reliable and economic design of instrumentation systems for concrete faced rockfill dams. The first developmental step was the generation of a model cross-section for a concrete...
A stochastic approach in reserve estimation
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Geostatistics and more especially stochastic modeling of reservoir heterogeneities are being increasingly considered by reservoir analysts and engineers for their potential in generating more accurate reservoir models together with usable measures of spatial uncertainty. Geostatistics provides a probabilistic framework and a toolbox for data analysis with an early integration of information. The uncertainty about the spatial distribution of critical reservoir parameters is modeled and transferred all the wa...
An investigation into the thermal behavior of coals
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The thermal behavior of 4 coal samples was investigated using simultaneous thermogravimetry (TG/DTG) and differential thermal analysis (DTA) methods. Upon heating the coals in an inert atmosphere up to 800degreesC, 31.44-43.82% weight loss occurs. The 2 temperature regions of increased chemical reactivity are evident in the coal samples studied Two different models determined kinetic analysis of the samples, and the results are discussed.
The Thermal Characterization of Crude Oils in a Limestone Matrix of Different Particle Size
Kök, Mustafa Verşan (2014-05-03)
In the first part of this research, the effect of particle size (35-100 mesh) on the calcination kinetics of a limestone sample was investigated by thermogravimetric analysis technique. Thermal studies showed that two main weight loss regions are observed in limestone samples of different particle size. In the second part of the research, thermal analysis of a medium crude oil sample in a limestone matrix of different particle size is analyzed. Two different reaction regions were observed known as low tempe...
Dogan, Burak; Yilmaz, Ibrahim; Polat, Ozgur; Karabulut, Oytun; Ural, Ahmet; Uludağ, Yusuf; ARADAĞ ÇELEBİOĞLU, SELİN (2014-06-27)
In this study, a combined experimental and computational study for the design of a low water consumption cooling tower is performed. The purpose of the study is to reduce the water consumption without decreasing the efficiency of a typical cooling tower. To achieve this aim, it is necessary to enhance the homogeneity of mist/air mixture. For this purpose, firstly, an experimental set-up including a small scale wind tunnel is installed which provides opportunity to examine different inlet and outlet configur...
Citation Formats
S. Akın, “A laboratory study of single-well steam-assisted gravity drainage process,” JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING, pp. 23–33, 2001, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/33215.