Gelation kinetics of functionalized silica crosslinked polymeric gels used in conformance control applications

Shamlooh, Mohamed; Hamza, Ahmed; Hussein, Ibnelwaleed A.; Nasser, Mustafa S.; Salehi, Saeed

doi:10.1002/cjce.23947

Cited by 6 publications

(3 citation statements)

References 41 publications

(63 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Comparing the similarities in the chemistry of chitosan and PEI, it is speculated that both crosslinkers undergo the same crosslinking mechanism with PAM. Figure agrees with the above statement as the application of PEI was reported to be limited to the high-temperature reservoirs when the temperature exceeds 80 °C. , Overall, the gel strength was observed to increase with the temperature, which is suggested to be caused by the increasing crosslinking due to the acceleration in the degree of hydrolysis in PAM at high temperatures.…”

Section: Resultssupporting

confidence: 88%

Chitosan/Polyacrylamide Green Gels for Water Control in High-Temperature Reservoirs

et al. 2022

Self Cite

View full text Add to dashboard Cite

The rheology of a gel system composed of polyacrylamide (PAM) and chitosan is studied under typical reservoir conditions. The impacts of the degree of chitosan deacetylation, temperature, and salinity on the gelation behavior are assessed. The said system was prepared under ambient conditions and matured for 24 h at altered temperatures ranging from 50 up to 125 °C. An optimum formulation has been identified considering the rheological response and the initial viscosity constraints. The increase in the degree of syneresis with the degree of deacetylation indicates the long-term thermal stability of the gels. Ammonium chloride was an effective retarder for the PAM/chitosan gelant, which delayed the gelation time from 60 to 210 min when 2 wt % is used; however, it compromised the final gel strength. The chitosan/PAM system showed a good rheological behavior and potential as a green plugging agent in high-temperature oil and gas wells. Chitosan could be an alternative for commercial crosslinkers, such as polyethyleneimine.

show abstract

Section: Resultssupporting

confidence: 88%

Chitosan/Polyacrylamide Green Gels for Water Control in High-Temperature Reservoirs

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…Compared with PAM/PEI gels, PAM/TAS has higher salt resistance. Shamlooh et al 116 investigated three functionalized SiO 2 with nitrogen-containing functional groups, sodium triamine tetraacetate (TAC), guanidine, and triamine. The results showed that only triamine-SiO 2 could cross-link with PAM with an elastic modulus of about 700 Pa.…”

Section: Improved Gel Strengthmentioning

confidence: 99%

Progress and Prospects of In Situ Polymer Gels for Sealing Operation in Wellbore and Near-Well Zone

Kang,

Liu,

Jia

et al. 2024

Energy Fuels

Self Cite

View full text Add to dashboard Cite

In situ polymer gels have been received as a useful tool for sealing operations such as fluid loss control during well drilling and workover and completion, well stimulation, water shutoff, wellbore integrity, and wellbore pressure management. With the development of deep-sea, deep-earth, and unconventional reservoirs, various harsh conditions such as high temperature, high pressure, and complex working conditions pose great challenges to the performance of gels. This paper first summarizes the application and operating mechanism of in situ polymer gels for sealing operations in wellbore and near-wellbore zones. Then, the in situ polymer gels are categorized into three types, in situ monomer gels, in situ cross-linked gels, and in situ generated foam gels, and the advantages and disadvantages of these three types of gels are introduced. Second, an overview of performance improvement methods for in situ polymer gels is highlighted, including improved temperature resistance and strength, accelerated gelation, retarded gelation, gel-breaking methods, and self-degradation systems. Finally, the challenges and prospects of in situ polymer gels for sealing operation in wellbores and near-well zones are presented, to provide references for the application, formulation, and performance improvement of in situ polymer gels.

show abstract

“…[10] This pressure is enough to keep water in the liquid phase as per our previous literature reports, and the selected strain was in the linear viscoelastic range. Al-Muntasheri et al [11][12][13] PAM/Cr +3 3-8 days 65-80 C Relatively toxic compared to other crosslinkers.…”

Section: Rheological Characteristicsmentioning

confidence: 99%

Impact of aluminium acetate particles size on the gelation kinetics of polyacrylamide‐based gels: Rheological and molecular simulation study

et al. 2021

Self Cite

View full text Add to dashboard Cite

Inorganically crosslinked polymers have been intensively implemented for conformance control treatments in oil and gas wells at low temperatures (<90°C) because of their faster gelation time compared to organically crosslinked gels. Crosslinkers such as chromium acetate are known to be toxic, and aluminium‐based alternatives have been introduced. This study aims to investigate the impact of aluminium acetate (AlAc) particle size on the gelation kinetics of polyacrylamide (PAM)‐based gels at a pH of 5 and temperature of 75°C. Moreover, bentonite is used as an additive to delay the crosslinking of PAM/AlAc gels. Reducing the particle size increases the specific surface area of the particles and provides more crosslinking sites. Therefore, lower PAM concentrations (up to 5 wt.%) could be used without AlAc settling. Using 7 wt.% PAM/1 wt.% AlAc with sizes of 25 and 48 μm revealed a crosslinking time of 17 and 115 min, respectively. The addition of bentonite at low crosslinker concentrations (0.5–1 wt.%) did not decrease the gel strength of 7 wt.% PAM/1 wt.% AlAc significantly. The gelation time was extended after adding 1 wt.% bentonite to the formulation where the delay was attributed to the adsorption of AlAc on the bentonite surface that was illustrated by molecular simulation.

show abstract

Gelation kinetics of functionalized silica crosslinked polymeric gels used in conformance control applications

Cited by 6 publications

References 41 publications

Chitosan/Polyacrylamide Green Gels for Water Control in High-Temperature Reservoirs

Chitosan/Polyacrylamide Green Gels for Water Control in High-Temperature Reservoirs

Progress and Prospects of In Situ Polymer Gels for Sealing Operation in Wellbore and Near-Well Zone

Impact of aluminium acetate particles size on the gelation kinetics of polyacrylamide‐based gels: Rheological and molecular simulation study

Contact Info

Product

Resources

About