[1]魏 俊,吴雅丽,张志军,等.变黏度聚合物驱注入参数优化研究与应用[J].复杂油气藏,2021,14(01):57-60.[doi:10.16181/j.cnki.fzyqc.2021.01.011]
 WEI Jun,WU Yali,ZHANG Zhijun,et al.Study and application of injection parameters optimization for polymer flooding with variable viscosity[J].Complex Hydrocarbon Reservoirs,2021,14(01):57-60.[doi:10.16181/j.cnki.fzyqc.2021.01.011]
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变黏度聚合物驱注入参数优化研究与应用()
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《复杂油气藏》[ISSN:1674-4667/CN:31-2019/TQ]

卷:
14卷
期数:
2021年01期
页码:
57-60
栏目:
油气开发
出版日期:
2021-03-25

文章信息/Info

Title:
Study and application of injection parameters optimization for polymer flooding with variable viscosity
作者:
魏 俊吴雅丽张志军王宏申李百莹尹 鹏
中海油能源发展股份有限公司工程技术分公司,天津300452
Author(s):
WEI JunWU YaliZHANG ZhijunWANG HongshenLI BaiyingYIN Peng
CNOOC Energy Tech-Drilling & Production Co.,Tianjin 300452,China
关键词:
变黏度聚合物驱参数优化提高采收率
Keywords:
variable viscosity polymer floodingparameter optimizationEOR
分类号:
TE357
DOI:
10.16181/j.cnki.fzyqc.2021.01.011
文献标志码:
A
摘要:
针对渤海油田储层非均质性强,单一段塞连续注入易发生剖面返转等问题,利用数值模拟和人造岩心三管并联物理模拟实验,对变黏度聚合物驱提高采收率机理及注入参数进行研究与优化。研究结果表明:在聚合物用量相同的情况下,高黏低速+低黏高速段塞注入为最优注入方式,6倍渗透率级差下,高低黏段塞大小比≤0.3,注入速度比在1:2时,可最大程度延缓剖面返转,实现均衡驱替,从而大幅提高采收率。在6倍渗透率级差下,高低黏段塞大小比为0.3时,高低黏段塞恒速交替注入2轮次比单一段塞提高采收率2.42%;高低黏段塞注入速度比为1:2时,高黏低速+低黏高速段塞注入比单一段塞提高采收率4.84%。现场试验增油效果明显,为渤海油田聚合物驱高效开发提供了指导。
Abstract:
Aiming at the problem of strong reservoir heterogeneity and profile reversal of continuous injection of a single slug in Bohai Oilfield,the EOR mechanism and injection parameters of polymer flooding with variable viscosity were studied and optimized by numerical simulation and physical simulation of three-pipe parallel artificial core. The results show that high-viscosity low-velocity and low-viscosity high-speed slug injection is the best injection method with the same amount of polymer. At 6 times permeability difference,the profile reversion can be delayed to the greatest extent,the balanced displacement between layers can be realized,thereby greatly improving the recovery factor when the size ratio of high and low viscosity slug is ≤0.3 and the injection velocity ratio is 1:2. When the size ratio of high and low viscosity slug is 0.3,the recovery of high and low viscosity multi-slug alternate injection 2 rounds at constant rate has enhanced by 2.42% compared with a single slug. When the injection velocity ratio of high and low viscosity slug is 1:2,the recovery of high viscosity low speed and low viscosity high speed slug injection has enhanced by 4.84% compared with a single slug.The field test has obvious oil-increasing effect,which provides guidance for the efficient development of polymer flooding in Bohai Oilfield.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2020-09-04 ;改回日期:2020-10-12 。
第一作者简介:魏俊(1986—),硕士,工程师,现从事提高采收率技术研究。E-mail: weijun2@cnooc.com.cn。
基金项目:国家科技重大专项“渤海油田化学驱配套工艺、方案优化研究及现场示范”(2016ZX05058-003-001)。
更新日期/Last Update: 2021-03-25