【摘要】：利用表觀粘度測量法,研究部分水解聚丙烯酰胺(HPAM)南海海水溶液磁處理后的增粘規(guī)律,并對增粘后的HPAM南海海水溶液進(jìn)行抗剪切性能、抗氧降解性能、磁記憶性和模擬巖心驅(qū)油性能評價。結(jié)果表明:在磁處理溫度為30℃、磁場強(qiáng)度為60 mT、磁處理時間為1.5 h和磁處理攪拌速度為800 r/min的條件下,質(zhì)量濃度為2 000 mg/L的HPAM南海海水溶液的粘度由14.2 mPa·s增至18.1 mPa·s,增粘率達(dá)27.5%;磁處理增粘的HPAM南海海水溶液,在30℃下抗50~200目篩網(wǎng)的剪切性能和抗氧鼓泡降解性能明顯優(yōu)于同溫度下未經(jīng)磁處理的HPAM南海海水溶液,且磁記憶時間達(dá)9 d。在HPAM南海海水溶液驅(qū)油結(jié)束后,繼續(xù)注入3.9 PV經(jīng)磁處理增粘的HPAM南海海水溶液,注入壓力提高了35 k Pa,圖像顯示波及體積進(jìn)一步擴(kuò)大,采收率得到進(jìn)一步提高。
[Abstract]:The viscosity enhancement of partially hydrolyzed polyacrylamide (HPAM) South China Sea seawater solution after magnetic treatment was studied by means of apparent viscosity measurement. The anti-shear and oxidative degradation properties of the partially hydrolyzed polyacrylamide-HPAM South China Sea seawater solution were also studied. Evaluation of magnetic memory and oil displacement performance of simulated cores. The results show that when the magnetic treatment temperature is 30 鈩，

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