Abstract
The experiments on initial stages of steam assisted gravity drainage (SAGD) process have been carried out using two-dimensional scaled reservoir models to investigate its production process and performance. Rising or growing process of the initial steam chamber, its shape and area, and temperature distributions have been visualized by using video and thermal-video pictures. As a drainage mechanism, the relationship between isothermal lines and chamber interface have been presented. The temperature on the interface, where the chamber was expanding, was maintained at almost constant temperature of 80 °C. Furthermore, the effect of vertical well spacing between two horizontal wells on oil recovery has been investigated. For the case of usual SAGD, oil production rate increases with increasing vertical well spacing, however the leading time to start oil production by gravity drainage becomes longer. The results show that the well spacing may be a representative length for initial stage of the process. Based on these experimental results, a modified SAGD process by adding intermittent steam injection from the lower production well have been proposed. By applying the modified process, the time to generate near breakthrough condition between two wells was relatively shorten, and oil production was enhanced at the stage of rising chamber compared with that of usual SAGD process.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of International Conference on Horizontal Well Technology |
| Publisher | Society of Petroleum Engineers (SPE) |
| Pages | 467-477 |
| Number of pages | 11 |
| Publication status | Published - Dec 1 1996 |
| Externally published | Yes |
| Event | 2nd International Conference on Horizontal Well Technology - Calgary, Canada Duration: Nov 18 1996 → Nov 19 1996 |
Conference
| Conference | 2nd International Conference on Horizontal Well Technology |
|---|---|
| Country | Canada |
| City | Calgary |
| Period | 11/18/96 → 11/19/96 |
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All Science Journal Classification (ASJC) codes
- Fuel Technology
- Earth and Planetary Sciences(all)
- Energy(all)
Cite this
Experimental study on initial stage of SAGD process using 2-dimensional scaled model for heavy oil recovery. / Sasaki, Kyuro; Akibayashi, S.; Kosukegawa, H.; Kato, M.; Ono, K.
Proceedings of International Conference on Horizontal Well Technology. Society of Petroleum Engineers (SPE), 1996. p. 467-477 SPE-37089-MS.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Experimental study on initial stage of SAGD process using 2-dimensional scaled model for heavy oil recovery
AU - Sasaki, Kyuro
AU - Akibayashi, S.
AU - Kosukegawa, H.
AU - Kato, M.
AU - Ono, K.
PY - 1996/12/1
Y1 - 1996/12/1
N2 - The experiments on initial stages of steam assisted gravity drainage (SAGD) process have been carried out using two-dimensional scaled reservoir models to investigate its production process and performance. Rising or growing process of the initial steam chamber, its shape and area, and temperature distributions have been visualized by using video and thermal-video pictures. As a drainage mechanism, the relationship between isothermal lines and chamber interface have been presented. The temperature on the interface, where the chamber was expanding, was maintained at almost constant temperature of 80 °C. Furthermore, the effect of vertical well spacing between two horizontal wells on oil recovery has been investigated. For the case of usual SAGD, oil production rate increases with increasing vertical well spacing, however the leading time to start oil production by gravity drainage becomes longer. The results show that the well spacing may be a representative length for initial stage of the process. Based on these experimental results, a modified SAGD process by adding intermittent steam injection from the lower production well have been proposed. By applying the modified process, the time to generate near breakthrough condition between two wells was relatively shorten, and oil production was enhanced at the stage of rising chamber compared with that of usual SAGD process.
AB - The experiments on initial stages of steam assisted gravity drainage (SAGD) process have been carried out using two-dimensional scaled reservoir models to investigate its production process and performance. Rising or growing process of the initial steam chamber, its shape and area, and temperature distributions have been visualized by using video and thermal-video pictures. As a drainage mechanism, the relationship between isothermal lines and chamber interface have been presented. The temperature on the interface, where the chamber was expanding, was maintained at almost constant temperature of 80 °C. Furthermore, the effect of vertical well spacing between two horizontal wells on oil recovery has been investigated. For the case of usual SAGD, oil production rate increases with increasing vertical well spacing, however the leading time to start oil production by gravity drainage becomes longer. The results show that the well spacing may be a representative length for initial stage of the process. Based on these experimental results, a modified SAGD process by adding intermittent steam injection from the lower production well have been proposed. By applying the modified process, the time to generate near breakthrough condition between two wells was relatively shorten, and oil production was enhanced at the stage of rising chamber compared with that of usual SAGD process.
UR - http://www.scopus.com/inward/record.url?scp=0030384387&partnerID=8YFLogxK
UR - https://www.onepetro.org/conference-paper/SPE-37089-MS
M3 - Conference contribution
AN - SCOPUS:0030384387
SP - 467
EP - 477
BT - Proceedings of International Conference on Horizontal Well Technology
PB - Society of Petroleum Engineers (SPE)
ER -