Home Journals Articles Updates About
CN
image
收藏切换
Analysis of Produced Fluid in Changqing Oilfield and Its Mechanism for Stimulation by Profile Control and Flooding
收藏切换
PDF
Yan WANG1, 2, Chang-hao YAN1, 2, Jia-jun CHEN1, 2, Jun WANG1, 2, Ping YI1, 2, Bo MA1, 2, Xiao-jing LIANG3, *
Science Technology and Engineering | 2025, 25(4) : 1332 - 1337
Less
收藏切换
Science Technology and Engineering | 2025, 25(4): 1332-1337
• Papers·Chemics •
Analysis of Produced Fluid in Changqing Oilfield and Its Mechanism for Stimulation by Profile Control and Flooding
Full
Yan WANG1, 2, Chang-hao YAN1, 2, Jia-jun CHEN1, 2, Jun WANG1, 2, Ping YI1, 2, Bo MA1, 2, Xiao-jing LIANG3, *
Affiliations
  • 1 Oil and Gas Technology Research Institute, Changqing Oilfield Branch Company, PetroChina, Xi’an 710018, China
  • 2 National Engineering Laboratory for Exploration and Development of Low-Permeable Oil and Gas Fields, Xi’an 710018, China
  • 3 CAS Key Laboratory of Chemistry of Northwestern Plant Resources, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
Published: 2025-02-28 doi: 10.12404/j.issn.1671-1815.2309432
Outline
收藏切换

In order to study the effect of polymer microsphere profile control and flooding on produced fluid and deepen the understanding of the profile control and flooding mechanism of polymer microsphere, the produced fluid in typical blocks of major reservoirs such as ultra-low permeablity, super-low permeablity and low permeablity in Changqing oil field were analyzed and studied. After using gravity separation and centrifugal separation methods to obtain crude oil and produced water, the changes in the composition of crude oil group, K+, Na+, Ca2+, Mg2+, $\mathrm{SO}_{4}^{2-}$ ions, and water content in the produced water before and after profile control were analyzed, and the variation patterns were summarized. The results show that after injecting polymer microspheres into each typical block, the saturated alkane content in the crude oil decreases, the non-hydrocarbon content increases, the water content significantly decreases, and the salinity of the produced water increases. Through the above research, it has been further clarified that polymer microspheres mainly play a “blocking” role in reservoirs, and residual oil is utilized by expanding the swept volume of injected water, providing a theoretical basis for the production increase of Changqing Oilfield through profile control and flooding.

four components of crude oil  /  produced water ions  /  polymer microspheres  /  profile control and flooding mechanism
Yan WANG, Chang-hao YAN, Jia-jun CHEN, Jun WANG, Ping YI, Bo MA, Xiao-jing LIANG. Analysis of Produced Fluid in Changqing Oilfield and Its Mechanism for Stimulation by Profile Control and Flooding[J]. Science Technology and Engineering, 2025 , 25 (4) : 1332 -1337 . DOI: 10.12404/j.issn.1671-1815.2309432
Appendix
Less
Year 2025 volume 25 Issue 4
PDF
339
142
Cite this Article
BibTeX
Article Info
doi: 10.12404/j.issn.1671-1815.2309432
  • Receive Date：2023-11-30
  • Online Date：2025-07-29
  • Published：2025-02-28
Article Data
Affiliations
History
  • Received：2023-11-30
  • Revised：2024-11-06
Funding
Affiliations
    1 Oil and Gas Technology Research Institute, Changqing Oilfield Branch Company, PetroChina, Xi’an 710018, China
    2 National Engineering Laboratory for Exploration and Development of Low-Permeable Oil and Gas Fields, Xi’an 710018, China
    3 CAS Key Laboratory of Chemistry of Northwestern Plant Resources, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
References
Share
https://castjournals.cast.org.cn/joweb/kxjsygc/EN/10.12404/j.issn.1671-1815.2309432
Share to
QR

Scan QR to access full text

Cite this article
BibTeX
Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
关闭全屏
  • BibTeX
  • EndNote
  • RefWorks
  • TxT
Links
Articles
Latest Articles
Most Read
Collections
Updates
Events
News
Multimedia
About
About Us
Contact
No. 86 Xueyuan South Road, Haidian District, Beijing
100081
010-62199257
qkjq@cast.org.cn

Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House