Experemental Study of Oil Migration in Coarsening upwards Sands
- Received Date: 2000-10-18
- Rev Recd Date: 2001-02-06
- Publish Date: 2001-12-10
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Key words:
- coarsening upwards sands /
- oiI migration /
- simuIation experiment
Abstract: ExperimentaI study of oiI migration in coarsening upwards sands have carried out by 2-D experimentaI modeI. The foIIowing resuIts have been obtained:(1)Near the top of the coarsening upwards sands, the oiI saturation is higher, the thickness of oiI sand is smaIIer, and the average efficiency of oiI migration in the parts of oiI-bearing sands is higher. In the sands the oiI saturation is decreasing downwards;(2)The direction and pathway of oiI migration generaIIy become more simpIe upwards in coarsening upwards sands and they are mainIy depended by the rate and direction of oiI injection, the permeabiIity difference of carrier beds and so on;(3)Hydrodynamics not onIy increase the efficiency of oiI migration but aIso decrease it. When the rate of water injection is Iow, hydrodynamics can increase the efficiency of oiI migration, whereas it wiII decrease the efficiency of oiI migration;(4)Hydrodynamics can decrease the rate of oiI migration.
Citation: | ZENG Jian hui, WANG Hong yu. Experemental Study of Oil Migration in Coarsening upwards Sands[J]. Acta Sedimentologica Sinica, 2001, 19(4): 592-597. |