Review of Research on Interlayer SAGD in Domestic and Foreign

2014 ◽  
Vol 644-650 ◽  
pp. 5142-5145 ◽  
Author(s):  
Peng Luo
Keyword(s):  
Heavy Oil ◽  
Development Process ◽  
Basic Research ◽  
Technical Support ◽  
Oil Field ◽  
Oil Reservoir ◽  
Steam Chamber ◽  
Heavy Oil Reservoir

China is rich in resources of heavy oil.But some oilfield heavy oil reservoir in the development process will encounter interlining, affecting the development effect. In the process of SAGD to carry out the basic research of reservoir interlayer is helpful to identify the basic attributes of reservoir in the interlayer. The interlayer of SAGD development process is helpful to find the study focus and direction of development. Steam chamber breakthrough research achievements of interlining research abroad, summarizes the steam chamber breakthrough interlining, provide technical support for the oil field SAGD breakthrough interlining, it is of great significance for promoting SAGD efficient development.

Seismic characterization of heavy oil reservoir during thermal production: A case study

Geophysics ◽  
2017 ◽  
Vol 82 (1) ◽  
pp. B13-B27 ◽  
Author(s):  
Hemin Yuan ◽  
De-Hua Han ◽  
Weimin Zhang
Keyword(s):  
Heavy Oil ◽  
Rock Physics ◽  
Time Lapse ◽  
Steam Injection ◽  
Oil Reservoirs ◽  
Inversion Method ◽  
Oil Reservoir ◽  
Steam Chamber ◽  
Heavy Oil Reservoirs ◽  
Heavy Oil Reservoir

Heavy oil reservoirs are important alternative energy resources to conventional oil and gas reservoirs. However, due to the high viscosity, most production methods of heavy oil reservoirs involve thermal production. Heavy oil reservoirs’ properties change dramatically during thermal production because the viscosity drops drastically with increasing temperature. Moreover, the velocity and density also decrease after steam injection, leading to a longer traveltime of seismic velocities and low impedance of the steam chamber zone. These changes of properties can act as indicators of the steam chamber and can be detected through the time-lapse inversion method. We first establish the rock-physics relationship between oil sands’ impedance and temperature on the basis of our previous laboratory work. Then, we perform the forward modeling of the heavy oil reservoir with the steam chamber to demonstrate the influence of steam injection on seismic profiles. Then, we develop a modified-Cauchy prior-distribution-based time-lapse inversion method and perform a 2D model test. The inversion method is then applied on the real field data, and the results are analyzed. By combining the inverted impedance and rock-physics relation between impedance and temperature, the temperature distribution map is obtained, which can work as an indicator of steam chamber. Finally, an empirical relation between impedance and velocity is established, and velocity is derived from the impedance.

Research on the Effect of Supercritical Carbon Dioxide on the Properties of Super Heavy Oil

2011 ◽  
Vol 347-353 ◽  
pp. 1689-1695
Author(s):  
Zhao Min Li ◽  
Wei Liu ◽  
Song Yan Li ◽  
Jing Li ◽  
Bin Fei Li
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Heavy Oil ◽  
Saturation Pressure ◽  
Oil Field ◽  
Viscosity Reduction ◽  
Oil Reservoir ◽  
Volume Factor ◽  
Heavy Oil Reservoir ◽  
Supercritical Carbon

Carbon dioxide flooding is an important way to exploit heavy oil reservoir. Considering the Zheng411 super heavy oil reservoir in Shengli Oil Field, the solubility of supercritical carbon dioxide in super heavy oil, and the effect of supercritical carbon dioxide on the volume factor, viscosity, component content and oil/water emulsification of super heavy oil are researched. The result shows: the solubility of carbon dioxide in super heavy oil increases with the increasing pressure, but the increasing extent declines gradually, when the pressure is below 28MPa, the solubility of carbon dioxide decreases with the rising temperature under the same saturation pressure; the volume factor increases linearly with the increase of supercritical carbon dioxide solubility; under the condition of unsaturation, the supercritical carbon dioxide is able to reduce the density of super heavy oil substantially, whereas it has little impact on the chemical properties of oil; Demulsification and visbreaking can be realized through dissolving supercritical carbon dioxide in super heavy oil that contains water, and the viscosity reduction capacity of carbon dioxide is hardly affected by water.

scholarly journals EVALUATION OF THE INFLUENCE OF THE UNDERLYING WATERS FOR DEVELOPING OF HEAVY OIL RESERVOIR PK1-3 OF THE VOSTOCHNO-MESSOYAKHSKOYE OIL FIELD BY USING WELL TESTS

2018 ◽  
pp. 57-63
Author(s):  
I. V. Kovalenko ◽  
S. K. Sokhoshko ◽  
D. A. Listoykin
Keyword(s):  
Heavy Oil ◽  
Horizontal Wells ◽  
Geological Structure ◽  
Oil Field ◽  
Oil Reservoir ◽  
Oil Viscosity ◽  
Complex Geological Structure ◽  
Heavy Oil Reservoir ◽  
Well Tests

The article presents the experience in the stage of experimental industrial exploitation and industrial exploitation of the field with a system for the development of horizontal wells with non-standard oil properties (high oil viscosity) and complex geological structure (gas cap and aquifer). The focus of the article is on the estimation of aquifer activity by using well tests.

Study on Application of Low Velocity Non-Darcy Flow

2014 ◽  
Vol 1078 ◽  
pp. 129-133
Author(s):  
Xian Kang Xin ◽  
Gao Ming Yu ◽  
Zhuo Li
Keyword(s):  
Heavy Oil ◽  
Percolation Theory ◽  
Oil Field ◽  
Oil Fields ◽  
Low Permeability ◽  
Oil Reservoir ◽  
Low Velocity ◽  
Production Index ◽  
Heavy Oil Reservoir ◽  
The Impact

The seepage underground is rather complicated in the low permeability reservoir and the heavy oil reservoir. One important point to note is that the seepage in these reservoirs does not follow Darcy's law, which brings difficulty to the development of oil field. Study on low velocity non-Darcy percolation theory, the impact on oil production index is analyzed. The key is the summary of the application in order to provide theoretical references for the rational exploitation of the relevant oil fields.

scholarly journals Research and Application of Cold Productivity Formula of Horizontal Well in the Power-Law Fluid Heavy Oil Reservoir

2021 ◽  
Vol 9 ◽  
Author(s):  
Gongchang Wang ◽  
Yingxian Liu ◽  
Zongbin Liu
Keyword(s):  
Power Law ◽  
Heavy Oil ◽  
Horizontal Well ◽  
Three Dimensional ◽  
Oil Field ◽  
Oil Reservoir ◽  
Power Law Fluid ◽  
Seepage Problem ◽  
Heavy Oil Reservoir ◽  
Power Law Index

Considering the rheological properties of fluid, reservoir heterogeneity, and eccentricity factor, the productivity formula of horizontal well for the power-law fluid heavy oil reservoir is derived by transforming the three-dimensional seepage problem into a two-dimensional seepage problem. The heavy oil production calculated by this formula is in good agreement with the actual production in the offshore oil field. Then, the influencing factors of production are analyzed, and the results show that the power-law index has the greatest influence on production. When the power-law index is less than 0.8, the production increases slowly with the power-law index and when it is greater than 0.8, the production increases faster. The power-law index has a greater impact on production for higher production pressure differential and longer horizontal well. Anisotropy has significant influence on the production. When the value of Kh/Kv is less than 10, the production decreases rapidly with the Kh/Kv; after the value of Kh/Kv is greater than 10, the production decreases slower. Eccentricity has trivial impact on the production.

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