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- W2374448420 abstract "In Sudanese Unity Oilfield,complex low-permeability and fault-block reservoirs of 90~120℃ were dominated.A viscosity-tough-tough high-temperature water shutoff system was synthesized by using tannin extracted as the main agent and formaldehyde as the cross-linking agent.The gelation properties and influential factors of the system were evaluated and analyzed.The typical formula of the blocking agent is that HPAM is 500mg/L,sulfonated tannin is 50000mg/L,hydroquinone is 5000mg/L,urea 4000mg/L,polyformaldehyde is 4000~10000mg/L,adjustable plastic time is 10~90h.The experimental results show that the blocking agent has a good thermal stability and the blocking rate f is 98% or more for the cores with different permeabilities.The integrated performance can meet operational requirements of the water shutoff of the complex high-temperature reservoirs." @default.
- W2374448420 created "2016-06-24" @default.
- W2374448420 creator A5088091709 @default.
- W2374448420 date "2010-01-01" @default.
- W2374448420 modified "2023-09-26" @default.
- W2374448420 title "Design and Performance Evaluation of A High-temperature Blocking Agent Used in Sudanese Oil Reservoirs" @default.
- W2374448420 hasPublicationYear "2010" @default.
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