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COMPOSITION FOR SEDIMENT REMOVAL FROM OIL WELLS AND RESERVOIR BOTTOMHOLE ZONE
COMPOSITION FOR SEDIMENT REMOVAL FROM OIL WELLS AND RESERVOIR BOTTOMHOLE ZONE
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机译:从油井和储层底孔带去除泥沙的成分
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FIELD: oil and gas industry.;SUBSTANCE: composition for sediment removal from oil wells and bottomhole zone of reservoir includes aqueous solution A containing ammonium salt, surfactant and reaction trigger, and aqueous solution B of sodium nitrite, at volume ratio of the solutions 1:1. Solution A includes ammonium nitrate as ammonium salt, Netrol as reaction trigger, Nonoxynol as surfactant at the following component ratio, wt %: ammonium nitrate 10-40, Netrol 1-5, Nonoxynol 0.01-0.5, the rest is water; and solution B contains additionally Trilon B at the following component ratio, wt %: sodium nitrite 15-30, Trilon B 3-5, the rest is water.;EFFECT: improved efficiency of both organic and inorganic sediment removal and destruction in oil wells and bottomhole zone of reservoir, at low temperatures as well.;2 tbl, 9 ex
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机译:领域:石油和天然气工业;物质:用于从油井和储层井底区域去除沉积物的组合物包括:溶液A(以溶液1的体积比计)包含铵盐,表面活性剂和反应引发剂以及亚硝酸钠水溶液B :1。溶液A包括硝酸铵作为铵盐,Netrol作为反应引发剂,壬诺酚作为表面活性剂,其组分比例为wt%:硝酸铵10-40,Netrol 1-5,壬诺酚0.01-0.5,其余为水;溶液B含有以下成分比例(重量%)的Trilon B:亚硝酸钠15-30,Trilon B 3-5,其余为水。效果:提高了油井中有机和无机沉积物去除和破坏的效率以及低温下的储层和井底区域。2tbl,9 ex
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