The Narrow Channel Sand Body Local Polymer Injection Test Technology In Gaotaizi Oil Fields

The partial polymer injection test of narrow river channel sand body of Gaotaizi oilfield iscarried out by oilfield company using original well pattern partial polymer injection field testwith7million molecular weight salt tolerant polymer by sewage with sewage dilution. Thetest makes a conclusion for the whole process of the field test, and also do exhaustive anddemonstration to the tracking adjustment methods and technology economic effect of thenarrow river channel sand body injector producer distance, reservoir utilized features, thecharacter of taking effect, injection parameter optimization and polymer injection process.7million molecular weight salt tolerant polymer by selective preference has betterphysical and chemical properties compared with ordinary polymer,with the characteristics oflow-concentration, high-viscosity, high-salt resistance, strong-injection, sewage system canmeet the needs of narrow river channel sand body polymer injection; bring forward thecomputing method of the degree of control of Gaotaizi oilfield narrow river channel sandbody polymer flooding; the mobile polymer injection station can meet the needs of thepolymer injection, compared with fixed-polymer injection station, the mobile polymerinjection achieves the purpose of reuse and lower investment. The test result has importantreference value and guiding significance for the rational development of the narrow riverchannel sand body and polymer flooding industrialized promotion; so we can promote the useof the partial polymer injection technology in Xingnan development transitional zone,Gaotaizi oilfield and Taibei development zone, which is mainly consist of narrow riverchannel sand body development.