Seven-Spot Steam Injection Experiments in Heavy Oil Reservoirs Having a Bottom Water Zone
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- 作者：Suat Bagci
- 刊名：Energy & Fuels
- 出版年：2005
- 出版时间：May 2005
- 年：2005
- 卷：19
- 期：3
- 页码：1037 - 1046
- 全文大小：410K
- 年卷期：v.19,no.3(May 2005)
- ISSN：1520-5029
文摘
A 3-D scaled physical model was used to compare the performance of steam injection inreservoirs having a bottom water zone with the application of different well configurations. Themodel was triangular, designed to represent 1/12 of a seven-spot pattern in the Bati Kozluca fieldin Turkey. Nine experiments were conducted by using the triangular model with or without abottom water zone. The well configurations were changed during the course of experiments todetermine their effects on oil recovery. Bottom water thicknesses were changed to see the effectson oil recovery. The physical properties of a crushed limestone and crude oil (12.4
API) mixturewere kept constant during the experiments. Steam was injected through a vertical well. Stringsof thermocouples were used to observe the 3-D temperature distribution inside the model. Themaximum oil recoveries were obtained by placing the horizontal producers along the hypotenuseof the triangular model. This well configuration provided better oil recovery than any other wellconfiguration, even in the presence of a bottom water zone. Oil recoveries decreased with anincrease in the thickness of the bottom water zone. The steam-oil ratio increased in the presenceof bottom water.
API) mixturewere kept constant during the experiments. Steam was injected through a vertical well. Stringsof thermocouples were used to observe the 3-D temperature distribution inside the model. Themaximum oil recoveries were obtained by placing the horizontal producers along the hypotenuseof the triangular model. This well configuration provided better oil recovery than any other wellconfiguration, even in the presence of a bottom water zone. Oil recoveries decreased with anincrease in the thickness of the bottom water zone. The steam-oil ratio increased in the presenceof bottom water.