RESEARCH ON WATER FLOOD OF THE FRACTURED A-BEI ANDESITE RESERVOIR

doi:10.3863/j.issn.1000-2634.2001.02.005

Abstract

Abstract: The A-Bei andesite reservoir was formed as a result of three phases of volcanic extrusions, and it exhibits characteristics of a typical double-porosity system. During waterflood recovery, the water cut increased very fast and production declined quickly as a consequence of injected water channeling a-
long fractures. To cope with this problem, detailed studies on the regularity of fracture occurrences were carried out and,based on the information gained, five kinds of waterflood plans were designed and altogether 13 different programs were performed. The FIFS reservoir numerical simulation software is
used to optimize the programs. The proposed measures include
"injection along fractures and production from matrix blocks" and "periodical injection and overall adjustment of injection profile with chemical agents". After six years of performance, the water cut is decreased by 4%, the cumulative increase of oil production is 4. 2×10⁴ t, and the recovery is increased by 2.5%. The knowledge and experience gained from this work
may provide useful reference for the injection program of similar reservoirs.

Key words: igneous reservoir, fractures, water injection, numerical simulation

CLC Number:

SONG She-min HUANG Zhe. RESEARCH ON WATER FLOOD OF THE FRACTURED A-BEI ANDESITE RESERVOIR[J]. 西南石油大学学报(自然科学版), 2001, 23(2): 19-21.

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RESEARCH ON WATER FLOOD OF THE FRACTURED A-BEI ANDESITE RESERVOIR

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