[1]苑光宇  羅煥.寬分子量聚合物/ 表面活性劑復合驅油體系性能評價[J].石油鉆采工藝,2018,40(6):805-810.[doi:10.13639/j.odpt.2018.06.021]
 YUAN Guangyu,LUO Huan.Evaluation on the properties of broad-molecular-weight polymer/surfactant flooding system[J].Oil Drilling & Production Technology,2018,40(6):805-810.[doi:10.13639/j.odpt.2018.06.021]
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寬分子量聚合物/ 表面活性劑復合驅油體系性能評價
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《石油鉆采工藝》[ISSN:1000-7393/CN:13-1072/TE]

卷:
40卷
期數:
2018年6期
頁碼:
805-810
欄目:
油氣開采
出版日期:
2018-11-20

文章信息/Info

Title:
Evaluation on the properties of broad-molecular-weight polymer/surfactant flooding system
文章編號:
1000 – 7393( 2018 )06 – 0805 – 06
作者:
苑光宇1  羅煥2
1. 中國石油遼河油田分公司勘探開發研究院;2. 中國石油大港油田公司采油工藝研究院
Author(s):
YUAN Guangyu1 LUO Huan2
1. Exploration and Development Research Institute, PetroChina Liaohe Oilfield Company, Panjin 124010, Liaoning, China; 2. Oil Production Technology Research Institute, PetroChina Dagang Oilfield Company, Tianjin 300280, China
關鍵詞:
寬分子量聚合物表面活性劑多分散系數復合驅油體系非均質性驅油效率
Keywords:
wide molecular weight polymer surfactant polydispersity index combination flooding system heterogeneity displacement efficiency
分類號:
TE327
DOI:
10.13639/j.odpt.2018.06.021
文獻標志碼:
A
摘要:
為解決注水開發油藏在高含水、高采出程度開發階段,非均質性較強、層間及層內矛盾突出而又無法實現分注的問題,提出了寬分子量聚合物/ 表面活性劑二元復合驅油體系。采用理論計算及室內實驗的方法,評價了復合體系的性能,結果表明:寬分子量聚合物具有較好的增黏效果,與表面活性劑配伍性較好;并且同時發揮了寬分子量聚合物擴大波及的作用以及表面活性劑提高洗油效率的作用,與儲層的適應性更好,可以在水驅基礎上提高采收率15% 以上;寬分子量聚合物中分子量配比應根據儲層的滲透率劃分確定,只有寬分子量聚合物體系與儲層非均質情況匹配性最好時,才能取得最好的驅油效果。寬分子量聚合物復合驅油體系是一種有效的驅替體系,研究結果可以為處于雙高開發期的非均質油藏提高采收率提供借鑒。
Abstract:
When waterflooding reservoirs are in the development stage of high water cut and high degree of reserve recovery, they are faced with the difficulties of stronger heterogeneity and obvious interlayer and intralayer contradictions, and separate injection cannot be fulfilled. In order to solve these problems, the broad-molecular-weight polymer/surfactant flooding system was proposed in this paper. In addition, its properties were evaluated by means of theoretical calculation and laboratory experiment. It is indicated that broad-molecular-weight polymer has better viscosity increasing effect and it is better compatible with the surfactant. This broad-molecular-weight polymer/surfactant flooding system gives the full play to the sweeping enlargement effect of broad-molecular-weight polymer and the displacement efficiency increasing effect of surfactant, and its applicability to reservoirs is better. By virtue of this system, the recovery factor is increased by over 15% on the basis of water flooding. The molecular weight proportion of broad-molecular-weight polymer shall be determined according to the reservoir permeability. The best displacement efficiency cannot be realized unless the compatibility between the broad-molecular-weight polymer system and the reservoir heterogeneity is the best. In conclusion, the combination flooding system of broad-molecular-weight polymer is an effective displacement system. The research results can be used as the reference for EOR of heterogeneous oil reservoirs in the development stage of high water cut and high degree of reserve recovery.

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