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| ©2000 AGI |
- By creating a table
of well name, date of first water production and subsea depth of lowest
perforation, the order of water break-through can be determined. By
mapping the date of first break-through along with the depth of lowest
perforation onto a structure map, the movement of water can be assessed.
-
Within this area the structure sand-body geometry and production are controlling aquifer encroachment. Water is encroaching up structure from the northeast to the southwest; however, it reached its structural high in the southwest corner before the northwest corner (well 309). This fact indicates that structure alone is not influencing aquifer encroachment.
-
The water encroachment trend indicates that it is likely that this genetic unit is in fluid-flow communication and can therefore be interpreted as a fluid-flow compartment. Figure 4 demonstrates this point.
-
No. From the subsea depths of water encroachment, it is as if the aquifer had encroached up to the depth at which well 329 was perforated.
|
Well name |
Date of 1st production |
Depth
of lowest |
Notes |
|
308 |
January 1970 |
-3871 |
Produced water after 1 month of production |
|
309 |
October 1983 |
-3797 |
13 years w/o water producing 3.4 MMSTB |
|
310 |
October 1970 |
-3869 |
Produced water after 1 month of production |
|
313 |
July 1990 |
-3734 |
Produced water after 2 months of production |
|
329
|
October 1991 |
-3784 |
44% water cut for IP |