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- W2359547515 abstract "A series of highly permeating curable sythetic resin base sealing fluids(CFs) are developed for channelling and leakoff blockage in oil production and water injection wells of sandstone reservoirs in Huabei oil fields and their basic recept consists of 60—80% modified phenolic resin,5—25% unsaturated polyester resin,1—3% curing agent,1—5% promotor,5% plasticizer,5% reinforcer,and other additives.For 8 grades of CFs formulated for use at different formation temperatures ranged in 40—110℃,a retardation time of 3—8 hrs in their crosslinking/curing reactions is determined on their viscosity vz temperature curves.For the cured CFs,the tensile,compression and shear strength is in range 12.5—10.8,13—87,and 20.0—9.2 MPa,respectively,the dissolution rate in 10% HCl,10% NaOH and 10% NaCl solutions is1% and,when mixed with sand,the perforation penetration by bullets of different size is much less than that for set oilwell cement.These CFs have been used since 2001 in 3 production wells for water producing layer plugging and in 2 production wells for channelling blockage(in one well the pay layers are rather low permeable and in another the patching in casing has failed) with 100% plugging rate;with the sealing jobs finished,these wells have worked normally without troubles over more than 1—3 years under pressures 14—19 MPa." @default.
- W2359547515 created "2016-06-24" @default.
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- W2359547515 date "2005-01-01" @default.
- W2359547515 modified "2023-09-25" @default.
- W2359547515 title "Performance Properties and Uses of Modified Phenol-Formaldehyde Resin Sealant for Channelling/Leakage Blockage" @default.
- W2359547515 hasPublicationYear "2005" @default.
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