Investigation of semi-interpenetrated networks gel for water production control in a mature offshore oilfield

Yu, Qin; Lu, Xiang guo; Zhang, Baoyan; Jin, Yubao

doi:10.1504/ijogct.2019.097447

Cited by 1 publication

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1,2 Deep profile control is needed to improve the efficiency of injection wells and the sweep coefficient of the injection development. 3,4 Profile control agents have been applied in oilfields, including in-situ polymer gels, [5][6][7] particle gels 8,9 and polymer microspheres. 10,11 Microspheres have been successfully used as a deep fluid flow agent with excellent performances, 12 due to their nanometer sizes, good injection properties, and deep migration capabilities.…”

Section: Introductionmentioning

confidence: 99%

“…The injection water bursts into the large channel, resulting in inefficient or ineffective operation 1,2 . Deep profile control is needed to improve the efficiency of injection wells and the sweep coefficient of the injection development 3,4 . Profile control agents have been applied in oilfields, including in‐situ polymer gels, 5–7 particle gels 8,9 and polymer microspheres 10,11 .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Intelligent sustained‐release microgel for reduced permeability of fluid channels: Synthesis and properties

Song

Cai

et al. 2021

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

Polymer microspheres as fluid diverting agents have been applied for profile control in deep reservoirs. However, its reservoir adaptability strictly requires the matching between the particle size and the pore radius, which are hard to realize due to uncertainty of pore radius caused by long-term water flooding. That behavior has severely reduced their plugging performance to the large channel. The objective of this study was to prepare a kind of intelligent sustained-release microgel to solve the problem, which could slowly release of sodium silicate during migration, form the larger aggregates and plug high permeability reaching deep reservoir. We developed a novel blocking agent, which is an amphoteric microgel (OICMS) synthesized by light-initiated polymerization followed by the adsorption of a sodium silicate solution. The microgel properties, including the adsorption and release properties of a sodium silicate solution, and its influencing factors were investigated. The results showed that the OICMS had larger adsorption and release ratio of sodium silicate than conventional polymer microspheres, influenced by the ionic degree, molecular weight, amount of pore-forming agent, and cross-linking density.

show abstract