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The Experimental Study of Well Pattern Infilling and Well Pattern Sparsing on the Impact of Polymer Flooding Effect

Author: LiMei
Tutor: LiYiQiang
School: Daqing Petroleum Institute
Course: Oil and Gas Field Development Project
Keywords: Polymer flooding Change flow direction Infill Well network Rarefy Flooding effects
CLC: TE357.6
Type: Master's thesis
Year: 2008
Downloads: 145
Quote: 0
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Abstract


The polymer flooding technology in large scale applications in the Daqing Oilfield , the the flooding effect has people well known the polymer injection block and the reservoir will continue to increase in future development planning requirements of Daqing Oilfield , the total production of polymer flooding the proportion of the production will be growing polymer flooding has become a key to sustainable development of Daqing Oilfield and core technology . But existing research results show that , in reservoir vertical heterogeneity serious , polymer along the hyperosmolar small layer rapid breakthrough into producing wells , while there are many polymers not spread to the peaceful surface of the in hypotonic small layer dead oil area , after the formation of polymer flooding there is still a lot of residual oil . In this paper, a the hydrodynamic change flow direction EOR polymer flooding combination of new enhanced oil recovery method in order to further improve the Daqing oilfield P Ⅰ 2 reservoir polymer flooding effect , that polymer drive in , late the well network the encryption ( Rarefy ) , in order to improve the poor reservoir development , to communicating bad block polymer flooding effect . The indoor physical model large flat carry polymer flooding , late infill ( Rarefy the ) physical simulation and experimental study of different well network encryption ( Rarefy the ) timing of the polymer injection process , polymer flooding late reasonable encryption ( Rarefy to the ) timing model on water distribution and moisture , adopt a variation of the degree of pressure indicators . The experimental results show that polymer flooding in the late utilization the infill ( Rarefy ) can further improve the development effect of polymer flooding mine polymer flooding , post- rational use of the well network , further improve reservoir poorly developed , communicated bad area the block polymer flooding development effect to provide experimental evidence .

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CLC: > Industrial Technology > Oil and gas industry > Oil and gas development and mining > Production Engineering > Enhanced oil recovery and maintain reservoir pressure (secondary and tertiary oil recovery ) > Reservoir water injection
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