油气藏评价与开发 ›› 2018, Vol. 8 ›› Issue (4): 46-51.

• 石油工程 • 上一篇    下一篇

聚驱后综合治理措施增油效果及作用机理研究——以渤海LD10-1油田为例

刘义刚1,肖丽华1,邹剑1,卢祥国2,闫冬2,曹伟佳2   

  1. 1. 中海石油(中国)有限公司天津分公司渤海石油研究院,天津 塘沽 300450
    2. 东北石油大学提高油气采收率教育部重点实验室,黑龙江 大庆 163318
  • 收稿日期:2017-08-14 出版日期:2018-08-26 发布日期:2018-11-28
  • 作者简介:刘义刚(1970 —),男,博士,教授级高工,采油工程、增产增注措施和提高采收率技术研究和管理。
  • 基金资助:
    国家“十三五”重大科技专项子课题“渤海双高油田多级窜逸堵调驱一体化技术研究及示范”(2016ZX05058003-010);国家自然科学基金“抗盐型聚合物油藏适应性及其改进方法基础研究”(51574086)

Study on oil increasing effect and mechanism of comprehensive treatment measures after polymer flooding: Taking LD10-1 oilfield in Bohai Oilfield as an example

Liu Yigang1,Xiao Lihua1,Zou Jian1,Lu Xiangguo2,Yan Dong2,Cao Weijia2   

  1. 1.Bohai Oil Research Institute of Tianjin Branch, CNOOC, Tanggu, Tianjin 300452, China
    2. Laboratory of Enhanced Oil Recovery of Education Ministry, Northeast Petroleum University, Daqing, Heilongjiang 163318, China
  • Received:2017-08-14 Online:2018-08-26 Published:2018-11-28

摘要:

渤海LD10-1油田具有储层厚度大、平均渗透率高、非均质性严重、岩石胶结强度低和单井注采强度高等特点,采取早期聚合物凝胶调驱技术进行开发,聚合物滞留作用和冲刷作用造成的层间和层内矛盾十分突出。开展了聚驱后调驱剂筛选和性能评价以及调剖、解堵和调驱剂与水交替注入等综合治理方式的开发效果测试。结果表明,在聚合物凝胶用量相同条件下,与整体段塞注入方式相比较,采取“凝胶与水交替注入”方式可以减缓“吸液剖面反转”速度,扩大中低渗透层波及系数。将调剖或解堵措施与“凝胶与水交替注入”方式联合使用时,中低渗透层动用程度进一步提升,增油降水效果十分明显。

关键词: 渤海油田, 早期注聚, 综合治理, 物理模拟, 机理分析

Abstract:

LD10-1 oilfield in Bohai reservoir is a thick reservoir with high average permeability, serious heterogeneity, low cementing strength of rock and high single well injection-production strength. For this reason, during the development of the profile control and oil displacement technology of polymer gel in the early stages, the contradiction between and within layers caused by the polymer retention and scour are obvious. Then we test the development of the comprehensive treatment of the effect screening and performance evaluation, profile control, plug release of modifying and flooding agent, alternative injection of the profile control and oil displacement agent and water after polymer flooding. The results showed that, with the same dosage of the polymer gel, and compared with the whole slug injection method, the gel and water alternating injection method can slow down the speed of the entry profile reversal, and extend the sweep coefficient of the medium and low permeability layer. When they are used together, the utilization level of the medium and low permeability layers is further enhanced, and the effect of oil increasing and precipitation is obvious.

Key words: Bohai Oilfield, early polymer flooding, comprehensive treatment, physical simulation, mechanism study

中图分类号: 

  • TE357