CAJ | 학술논문

一些特殊性油藏注水井由于注水压力高，PI值高，油水井间窜流严重，目前常用的颗粒型堵剂注不进或污染油层，凝胶型强度低堵不住水道。以丙烯酰胺、聚丙烯酰胺为主剂，研制出DHG-1和HHG-1两种新型缓凝高强度调堵剂。在70℃条件下，两种堵剂初始成胶时间由几小时延长至5 d以上，终凝强度分别达到3.8×104 mPa· s和1.2×104 mPa· s。室内堵塞率均大于95％，通过控制注入速度，堵剂可优先进入高渗目的层，各项技术参数可满足特殊性油藏调堵的需要。两种体系单独或复合应用于韦5-8等4口井的调堵试验，措施成功率100％，已累计增油1992.3 t。
일사특수성유장주수정유우주수압력고，PI치고，유수정간찬류엄중，목전상용적과립형도제주불진혹오염유층，응효형강도저도불주수도。이병희선알、취병희선알위주제，연제출DHG-1화HHG-1량충신형완응고강도조도제。재70℃조건하，량충도제초시성효시간유궤소시연장지5 d이상，종응강도분별체도3.8×104 mPa· s화1.2×104 mPa· s。실내도새솔균대우95％，통과공제주입속도，도제가우선진입고삼목적층，각항기술삼수가만족특수성유장조도적수요。량충체계단독혹복합응용우위5-8등4구정적조도시험，조시성공솔100％，이루계증유1992.3 t。
There are high injection pressure ,big PI value of injection wells ,and serious channeling between oil and wa-ter wells in some special reservoirs .In these reservoirs ,the common type of particle plugging agent can pollute or not be in-jected into the reservoirs ,and the gel plugging agent can not plug water channels because of lower strength .Thus,two new types of plugging agents with delayed cross -linking and high strength ,respectively called DHG -1 and HHG-1,were developed ,which consis of acrylamide and polyacrylamide .Under the condition of 70℃,the initial gel times were extended from several hours to more than 5 days,and the final strengths were respectively 3.8 ×104 mPa· s and 1.4 ×104 mPa· s for the two systems .The lab experiments indicated that the blocking rates of the two plugging agents were more than 95%,and the plugging agent can have priority in entering the high permeability layer by controlling the injection rate ,and the techni-cal parameters can meet the needs of the special reservoirs .These two systems had been applied alone or compositely in 5 wells such as W5-8 well .The success rate of measures was 100%,and had a cumulative incremental oil of 1 992.3 tons.