Hardened properties and microstructure change of sulphoaluminate cement modified with different doses of styrene-butadiene rubber latex

Xie, Zonglin; Yuan, Qiang; Yao, Hao; Zhong, Fei; Jiang, Mengjie

doi:10.1016/j.conbuildmat.2023.132618

Cited by 10 publications

(2 citation statements)

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“…Therefore, SBSM with smaller particle size can be more evenly distributed on the surface of cement particles to inhibit gas migration 46 . At the same time, the low charge amount of SBSM has a lower degree of deprotonation than SBSI with high charge density, and it is easier to be tightly packed without being destroyed by calcium ions in the pore solution (SBSI is more likely to chelate with calcium ions), 47 which accelerates the film formation process and inhibits gas migration 48 . This is also the reason why SBSM is more effective than SBSI in preventing gas channeling.…”

Section: Resultsmentioning

confidence: 99%

“…It has been reported that Khan et al 51 developed a composite polymer material membrane based on the combination of PVA and metal–organic frameworks with zeolite imidazolate framework as the support, which improved its thermal stability and strength. Similarly, the polymer dehydrates and forms a three‐dimensional structure in the composite, 52 and the formed polymer film acts as a microfiber, 53 thereby bridging large cracks and improving the elastic toughness of the composite 47 . The weaker binding ability to calcium ions in the pore solution is more conducive to the close packing arrangement of latex particles on the cement‐based surface and film formation, 54 which explains that the flexural strength of SBSM/OWC is better than that of SBSI/OWC.…”

Section: Resultsmentioning

confidence: 99%

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Effects of carboxylated styrene‐butadiene latex nanoparticles on channeling leakage and pore structure of oil well cement

Dong,

Wang,

et al. 2024

J of Applied Polymer Sci

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The exploitation efficiency of oil and gas resources depends on the cementing quality. In cementing engineering, interlayer migration occurs in the underground gas layer with cement hole as the main channel, which seriously threatens the sealing integrity of cement casing and leads to the failure of cementing operation. To improve the gas migration control ability of oil well cement (OWC), two carboxylated styrene‐butadiene latex nanomaterials styrene butadiene latex containing itaconic acid and sodium p‐styrene sulfonate (SBSI) and styrene‐butadiene latex containing methacrylic acid and sodium p‐styrene sulfonate (SBSM) were synthesized. The effects of SBSI and SBSM with different carboxyl structures on the gas migration control ability and pore structure of cement were investigated. The results show that the latex is densely packed on the cement matrix through the dissociation and adsorption behavior of carboxyl groups, and the smaller particle size and lower adsorption are more conducive to the formation of the film. The introduction of latex effectively shortened the transition time of cement gel state and significantly reduced the permeability of interlayer material migration. Compared with OWC, the transition time of cement containing SBSI and SBSM latex (SBSI/OWC and SBSM/OWC) decreased from 28 to 18 and 17 min, respectively, and the filter loss decreased from 60 to 40 and 36 mL, respectively. The isolation effect of the latex film on the interlayer gas and the provision of mechanical support have greatly improved the gas migration control ability of the cement and ensured the cementing quality. In addition, the refinement of cement pore structure caused by latex brings better rheological and mechanical properties to cement. This study clarified the change of latex in the gel transition stage of OWC from liquid to solid and revealed the mechanism of latex on the internal structure change of cement. It broadens the application range of latex nanomaterials in the field of OWC and provides a new possibility for the use of OWC in high temperature and high salt environment.

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Section: Resultsmentioning

confidence: 99%