胡松
HU Song

• 1:大庆油田有限责任公司第六采油厂

摘要(Abstract)：

为了减少污水体系对喇嘛甸油田聚驱开发效果的影响,开展了抗盐聚合物提高采收率技术研究。通过调研大庆油田抗盐聚合物开发现状,选择3种抗盐聚合物开展室内实验,评价了增黏性、抗剪切性、黏度稳定性等性能指标,筛选出了体系性能最佳的TS1200抗盐聚合物。现场试验效果表明:在相同1 500 mg/L注入质量浓度条件下,TS1200抗盐聚合物井口黏度达66.3 mPa·s,比原1 600×10~4相对分子质量普通聚合物黏度提高35.3%;由于相对分子质量降低,与二类B油层匹配性好,注入能力增强,油层动用程度提高,注入0.084 PV后,采出端已有6口井见到初步效果,预计最终提高采收率11.1百分点。现场应用效果表明,TS1200抗盐聚合物驱可以作为喇嘛甸油田二类B油层开发的实用技术,为油田持续发展奠定基础,值得推广应用。
In order to reduce the influence of sewage system on the developed effect of polymer flooding in Lamadian Oilfield, the technical research on enhancing oil recovery was engaged for the salt-resistant polymer. Through investigating the development status of salt-resistant polymers in Daqing Oilfield, three kinds of salt-resistant polymers were selected to carry out the laboratory experiments.The performance indexes such as viscosity increasing ability, shear resistance, viscosity stability were evaluated, and the TS1200 salt-resistant polymer with the best system performance was screened out. The effects of field test show that under the same injected mass concentration of 1 500 mg/L, the viscosity at the wellhead for TS1200 salt-resistant polymer is up to 66.3 mPa·s, 35.3% higher than that of the common polymer with 1 600×10~4relative molecular mass. Due to the relative low molecular mass, TS1200 is well matched with the second type B reservoir, so it can enhance the injection ability and improve the producing degree of reservoir. After injecting 0.084 PV, the initial effects have been shown in the six wells at the production end, and the ultimate recovery was predicted to be 11.1 percentage points. The results of field test show that TS1200 salt-resistant polymer flooding can be used as a practical technique for the development of the second type B reservoir in Lamadian Oilfield and lay a foundation for the sustainable development of oilfield,which is worthy of promotion and application.

关键词(KeyWords)： 喇嘛甸油田;聚合物驱;污水;抗盐聚合物;提高采收率;现场试验
Lamadian Oilfield;polymer flooding;sewage;salt-resistant polymer;enhancing recovery;field test

Abstract:

Keywords:

基金项目(Foundation): 中国石油天然气股份有限公司重大科技专项“大庆油气持续有效发展关键技术研究与应用”(110011333011015)

作者(Author): 胡松
HU Song

DOI: 10.19597/j.issn.1000-3754.202004016

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