Water-oil Displacing Modeling Experiment of Interlayer Heterogeneous
Conglomerate Reservoir

doi:10.11885/j.issn.1674-5086.2012.06.06.02

Abstract

Abstract:

Aiming at the strong heterogeneity，the obvious contradiction between layers，the big producing difference of the
profile and the low overall recovery rate of the reservoir. Taking the conglomerate reservoir of T2k2 formation in Block 7 of
Xingjiang Oilfield as an example，a series of water-oil displacing experiments of different heterogeneous degree are conducted
at constant pressure. The experiments show that in the same group of the parallel water-oil displacing experiments，the higher
the permeability is，the faster the cores start while the water cut rises faster，the breakthrough recovery gets lower and the
displacing efficiency becomes higher；the differential between the layers increases as the displacing efficiency falls and the
parallel displacement with relative permeability differential bigger than 8 can not be launched；cores of single mode or dual
mode pore structure have higher displacement efficiency，the complex mode of sandy conglomerate and conglomerate has lower
displacement efficiency，the displacement efficiency of the low-medium permeability cores increases and the water cut rises
faster after the displacement pressure of the parallel model is magnified.

Key words: conglomerate reservoir, interlayer heterogeneity, cores grouped in parallel, water displacing oil experiment, oil
displacement efficiency

Tang Hongming1, Wen Xin2, Zhang Xuyang2, Ren Xiaocong3, Liu Hongxian4. Water-oil Displacing Modeling Experiment of Interlayer Heterogeneous
Conglomerate Reservoir[J]. 西南石油大学学报(自然科学版), DOI: 10.11885/j.issn.1674-5086.2012.06.06.02.

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