Continuous Variable Pressure Steam Injection for Enhanced Oil Recovery

2018 ◽  
Author(s):  
Y. Li ◽  
A. Agarwal ◽  
A. R. Kovscek
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Steam Injection ◽  
Continuous Variable ◽  
Variable Pressure ◽  
Pressure Steam

Software Tool for the Study, Analysis and Evaluation of Enhanced Oil Recovery Processes

2014 ◽  
Author(s):  
C. L. Delgadillo-Aya ◽  
M.L.. L. Trujillo-Portillo ◽  
J.M.. M. Palma-Bustamante ◽  
E.. Niz-Velasquez ◽  
C. L. Rodríguez ◽  
...  
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Water Injection ◽  
Software Tool ◽  
Steam Injection ◽  
Hot Water ◽  
Assessment Process ◽  
Analytical Models ◽  
Financial Assessment ◽  
Recovery Processes

Abstract Software tools are becoming an important ally in making decisions on the development or implementation of an enhanced oil recovery processes from the technical, financial or risk point of view. This work, can be manually developed in some cases, but becomes more efficient and precise with the help of these tools. In Ecopetrol was developed a tool to make technical and economic evaluation of enhanced oil recovery processes such as air injection, both cyclic and continuous steam injection, and steam assisted gravity drainage (SAGD) and hot water injection. This evaluation is performed using different types of analysis as binary screening, analogies, benchmarking, and prediction using analytical models and financial and risk analysis. All these evaluations are supported by a comprehensive review that has allowed initially find favorable conditions for different recovery methods evaluated, and get a probability of success based on this review. Subsequently, according to the method can be used different prediction methods, given an idea of the process behavior for a given period. Based on the prediction results, it is possible to feed the software to generate a financial assessment process, in line with cash flow previously developed that incorporates all the elements to be considered during the implementation of a project. This allows for greater support to the choice or not the application of a method. Finally the tool to evaluate the levels of risks that outlines the development of the project based on the existing internal methodology in the company, identifying the main and level of criticality and define actions for prevention, mitigation and risk elimination.

Enhanced oil recovery techniques for heavy oil and oilsands reservoirs after steam injection

2019 ◽  
Vol 239 ◽  
pp. 1190-1211 ◽  
Author(s):  
Xiaohu Dong ◽  
Huiqing Liu ◽  
Zhangxin Chen ◽  
Keliu Wu ◽  
Ning Lu ◽  
...  
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Heavy Oil ◽  
Steam Injection ◽  
Recovery Techniques

Seismic reflection amplitude versus angle variations over a thermally enhanced oil recovery site

Geophysics ◽  
1991 ◽  
Vol 56 (2) ◽  
pp. 292-301 ◽  
Author(s):  
C. Tsingas ◽  
E. R. Kanasewich
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Seismic Reflection ◽  
Amplitude Ratio ◽  
Steam Injection ◽  
Angle Of Incidence ◽  
Seismic Experiment ◽  
New Type ◽  
Cold Lake ◽  
Amplitude Versus

In recent years it has become increasingly important to develop a capability for monitoring enhanced oil recovery (EOR) processes as they are occurring within any reservoir. An amplitude‐versus‐angle (AVA) analysis over a steam injection location showed encouraging results and established that seismic reflection methods, when well designed and carefully processed, can be used to map the invaded steam zones in steam stimulation EOR operations. The results are imaged on a new type of display called ARPA (amplitude‐ratio for partial angle), which illustrates reflection zones with low or high Poisson’s ratio or equivalently high or low gas saturation with a CMP stack section plotted as the background. A seismic experiment consisting of three reflection lines was carried out by Esso Resources in February, 1984 over a steam injection site near Cold Lake, Alberta. Analysis of the field data showed that large variations in reflected scattered energy were a function of angle of incidence in areas affected by the steam zone.

Viscoelasticity of Ells River bitumen sand and 4D monitoring of thermal enhanced oil recovery processes

Geophysics ◽  
2013 ◽  
Vol 78 (6) ◽  
pp. D419-D428 ◽  
Author(s):  
James W. Spencer
Keyword(s):  
Bulk Modulus ◽  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Pore Space ◽  
Rock Physics ◽  
Steam Injection ◽  
P Wave ◽  
Low Frequencies ◽  
Recovery Processes ◽  
Seismic Frequencies

Samples of Ells River bitumen sand from Alberta, Canada were measured at low frequencies (0.2–205 Hz) to determine the temperature and frequency dependence of velocities and attenuations. The samples were first measured “as received” where the pore space is mostly filled with bitumen but also contains small amounts of air and water. With residual air in the pores, at 5°C, there is strong dispersion in the P-wave modulus and a peak in attenuation at seismic frequencies. The frequency-dependent moduli and attenuations shift by three orders of magnitude in frequency as temperature is increased from 5°C to 48°C, consistent with the bitumen viscosity. Samples were then saturated so any empty pore space is filled with water. After saturation, at 1 Hz, increasing temperature from 5°C to 49°C causes a 30% reduction in the saturated P-wave modulus, a 34% reduction in the saturated bulk modulus, and a 6% reduction in the shear modulus. This behavior can only be explained by the temperature-dependent bulk modulus of bitumen. The results enable predictions regarding the P-velocities that can be expected during seismic monitoring of thermal enhanced oil recovery processes. Velocities for cold bitumen sand are near [Formula: see text] at reservoir pressure and temperature. Following steam injection, velocities should be very low (near [Formula: see text]) in heated zones more than 50°C with a free gas phase, which could be steam or gas. There will be a progressive reduction in velocities, i.e., [Formula: see text] at 25°C and [Formula: see text] at 49°C, in areas of formation heating, but without steam or gas in the pores. Albeit smaller than the effect of steam, the effect of formation heating alone is large enough to be easily detected by today’s 4D surveys. With local rock physics calibration, it should be possible to map the areal extent of formation heating using 4D seismic data.

Thermo-economic optimization of steam injection operation in enhanced oil recovery (EOR) using nano-thermal insulation

Energy ◽  
2021 ◽  
Vol 226 ◽  
pp. 120409
Author(s):  
Mohammad Afra ◽  
S.M. Peyghambarzadeh ◽  
Khalil Shahbazi ◽  
Narges Tahmassebi
Keyword(s):  
Enhanced Oil Recovery ◽  
Thermal Insulation ◽  
Oil Recovery ◽  
Steam Injection ◽  
Economic Optimization
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