Planning for better formation consolidations using fluid displacement studies
Conference
·
· Soc. Pet. Eng. AIME, Pap.; (United States)
OSTI ID:6689636
One means of controlling sand production from weak sand intervals is to treat the formation with chemicals that will add cementitious materials between sand grains. This study deals with possible treatment failures that can result from poor displacement patterns of the chemicals injected into a formation. Successive injection of a series of flushes are normally required to consolidate a formation. Mathematical model studies were made of fluid fronts, considering such variables as (1) flush volumes to blend fronts, (2) viscosity of the flush fluids, and (3) different perforation lengths. Results of the studies should be particularly useful in successful consolidation of longer perforated intervals. For instance, results showed that failure to treat successfully a long uniform formation interval with one type of consolidation technique could be caused by excessive flushing of the plastic solution injected into the sand; this flushing occurs adjacent to the wellbore near the top and bottom of the perforated interval. A method is given for estimating the volume of fluid flushing these critical zones.
- Research Organization:
- Mobil Research and Develop. Corp.
- OSTI ID:
- 6689636
- Report Number(s):
- CONF-7309153-
- Conference Information:
- Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Journal Volume: SPE-4554
- Country of Publication:
- United States
- Language:
- English
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