本文選題：注入水 + 儲層傷害��； 參考：《地質(zhì)科技情報(bào)》2017年04期

【摘要】：為揭示注水水質(zhì)對儲層的傷害情況,針對克拉瑪依油田清污混注運(yùn)行中水體不配伍和水質(zhì)達(dá)標(biāo)率低的問題,開展了清污混注的水體配伍性、水質(zhì)對巖心的傷害、懸浮顆�；蛉榛蛯佣氯麢C(jī)理及注水水質(zhì)指標(biāo)研究。結(jié)果表明:克拉瑪依油田污水與清水、注入水與地層水均存在一定程度的不配伍,但失鈣(鎂)率都在30%以下。清污混注增加了注水對巖心傷害的程度,且清水占比越大傷害越重。注入水中懸浮顆粒和乳化油濃度越高,巖心的滲透率保留率越低,對巖心的傷害程度也越大。因此,克拉瑪依油田最大的清水配注量應(yīng)是恰好滿足配注所需的最低清水量,回注水的推薦指標(biāo)為懸浮顆粒質(zhì)量濃度≤5mg/L、乳化油質(zhì)量濃度≤20mg/L。
[Abstract]:In order to reveal the damage to reservoir caused by water injection water quality, aiming at the problems of water incompatibility and low water quality up to standard in the operation of decontamination mixed injection in Karamay Oilfield, the compatibility of water body and the damage of water quality to core were carried out. Study on reservoir plugging mechanism and water quality index of suspended particles or emulsified oil. The results show that there is a certain degree of incompatibility between the injected water and the formation water, but the loss of calcium (mg) is below 30%. The degree of damage caused by water injection is increased, and the greater the proportion of clean water is, the more serious the damage is. The higher the concentration of suspended particles and emulsified oil in injected water, the lower the permeability retention rate of the core and the greater the damage degree to the core. Therefore, the maximum amount of clear water injection in Karamay oilfield should be the minimum water quantity that is exactly satisfied with the injection allocation. The recommended index of water injection back injection is suspended particle mass concentration 鈮，

本文編號：2083595