Preparation and mechanistic analysis of high-selectivity water control systems

Preparation and mechanistic analysis of high-selectivity water control systems

PDF

Zhizhen Li^a^,^*, Weiyu Chen^a^,^b^,^c, Yanhui Su^a^,^b^,^c, Xueli Geng^a, Bin Shi^a, Xiaobin Zheng^a, Qian Zhou^d, Gang Xie^d

Petroleum Research | 2026, 11(3) : 789 - 798

Less

Petroleum Research | 2026, 11(3): 789-798

• Full Length Article •

Preparation and mechanistic analysis of high-selectivity water control systems

Full

Zhizhen Li^a^,^*, Weiyu Chen^a^,^b^,^c, Yanhui Su^a^,^b^,^c, Xueli Geng^a, Bin Shi^a, Xiaobin Zheng^a, Qian Zhou^d, Gang Xie^d

Affiliations

^aCNOOC EnerTech-Drilling & Production Co., Tanggu, Tianjin, 300452, China

^bState Key Laboratory of Offshore Oil and Gas Exploition, Beijing, 100028, China

^cCNOOC Energy Technology & Services Limited Key Laboratory of Enhanced Oil Recovery, Tanggu, Tianjin, 300452, China

^dState Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan, 610500, China

Published: 2026-09-10 doi: 10.1016/j.ptlrs.2025.11.008

Outline

Abstract

Less

This paper presents a highly selective water control system designed to address declining oil production in offshore wells caused by rising water cuts while overcoming the poor selectivity of current chemical water control materials. The system was developed by copolymerizing octadecyl methacrylate and butyl methacrylate, followed by emulsion polymerization to prepare oil-soluble polymers. This resulted in a water-dispersible, high-selectivity water control system in the form of an emulsion dispersion. The feasibility of its field application was assessed via median particle size and reservoir stability tests, and the system's water control performance, visual performance, and underlying mechanism were evaluated. The test results showed that the median droplet diameter of the emulsion in the system was 0.431 μm, and it remained stable for at least 8 h under reservoir conditions. The system demonstrated excellent selective water-control capabilities, with a water-phase permeability blocking rate of 82.42% and an oil-phase permeability blocking rate of 5.02%. The mechanism of action was further explored via visualized flat plate tests and low-field nuclear magnetic resonance scanning displacement experiments on rock cores. The findings suggest that oil-soluble particles exhibit effective selective water-control performance and can be applied in water control operations in offshore oil fields.

Key words

High-selectivity / Oil solubility / Water control / Oil-in-water emulsion

Cite this Article

Zhizhen Li, Weiyu Chen, Yanhui Su, Xueli Geng, Bin Shi, Xiaobin Zheng, Qian Zhou, Gang Xie. Preparation and mechanistic analysis of high-selectivity water control systems[J]. Petroleum Research, 2026 , 11 (3) : 789 -798 . DOI: 10.1016/j.ptlrs.2025.11.008

Full Text

Less

Funding

Less

Research Project of Engineering Technology Company, CNOOC Energy Technology & Services Limited(SSKJ-CG-GJ-2025-04)
Director's Fund of the National Key Laboratory of Efficient Development of Offshore Oil and Gas(KJQZ-2024-2101)

Appendix

Less

Year 2026 volume 11 Issue 3

PDF

Cite this Article

BibTeX

Article Info

doi: 10.1016/j.ptlrs.2025.11.008

Receive Date：2025-03-27
Online Date：2026-10-14
Published：2026-09-10

Article Data

Affiliations

History

Received：2025-03-27
Revised：2025-11-22
Accepted：2025-11-23

Funding

Research Project of Engineering Technology Company, CNOOC Energy Technology & Services Limited(SSKJ-CG-GJ-2025-04)

Director's Fund of the National Key Laboratory of Efficient Development of Offshore Oil and Gas(KJQZ-2024-2101)

Affiliations

^aCNOOC EnerTech-Drilling & Production Co., Tanggu, Tianjin, 300452, China

^bState Key Laboratory of Offshore Oil and Gas Exploition, Beijing, 100028, China

^cCNOOC Energy Technology & Services Limited Key Laboratory of Enhanced Oil Recovery, Tanggu, Tianjin, 300452, China

^dState Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan, 610500, China

Corresponding:

^* E-mail address: lizhzh9@cnooc.com.cn (Z. Li).

References

Share

https://castjournals.cast.org.cn/joweb/pr/EN/10.1016/j.ptlrs.2025.11.008

Share to

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

Articles: Latest Articles; Most Read; Collections

Updates: Events; News; Multimedia

About: About Us

Contact

No. 86 Xueyuan South Road, Haidian District, Beijing

100081

010-62662699(Operation and Technical Support)

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