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Predicting Wellbore Stability in SAGD Infill Wells Using 3 D Finite Element Modeling
| Content Provider | Semantic Scholar |
|---|---|
| Author | Khan, Safdar Ansari, Sajjad Ahmed |
| Copyright Year | 2011 |
| Abstract | In Steam Assisted Gravity Drainage (SAGD), multiple vertically spaced well pairs (injector and producer) are drilled from a pad. Due to continuous steam injection, a steam chamber around each well pair is formed which expands with time. After a few years of production, steam chambers between the adjacent well pairs can comingle and eventually overlap. This leaves a wedge of unproduced oil between the adjacent well pairs at the base of the reservoir. One way to access this unswept area is to drill “infill wells”. An infill well is a single horizontal well, drilled on the center-line between the two SAGD well pairs. Usually there is no injector on an infill well since the stranded bitumen in the unswept area has already been partially mobilized due to heat from adjacent injectors. Infill wells have been show to increase recovery by up to 10% with no additional steam. However, positioning of infill wells needs careful planning to maximize reserves recovery and to minimize risk of steam release and wellbore stability problems caused by various geomechanical effects. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://www.geoconvention.com/archives/2011/321-Predicting_Wellbore_Stability_in_SAGD_Infill_Wells.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
