PHYSICO-CHEMICAL OF POLYANIONIC CELLULOSE (PAC-R) POLYMER ON BONDING ABILITY IN THE CEMENTING MATERIAL USED FOR OIL AND GAS WELL
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Date
2023
Authors
Kuvanchbay, Bekzat
Tolegen, Bektas
Journal Title
Journal ISSN
Volume Title
Publisher
School of Mining and Geosciences
Abstract
The ability of the cement sheath to bond effectively with the casing or formation depends on its
tensile strength and Young's modulus, which determine its ability to withstand deformation under
load without separating. The aim of this research was to explore the impact of the concentration
of PAC-R copolymer and the duration of curing on the bonding capacity of the cementing
substance utilized in oil and gas wells. The study carried out two sets of experiments to assess
the chemical and mechanical features of the cement specimens. The compressive strength of the
samples was measured after curing for 1 day and 3 days at 80 ℃ in an OFITE curing chamber.
The uniaxial test results showed that samples with 10% and 20% PAC-R copolymer
concentrations had significantly lower axial loads and axial stresses compared to control
samples. As the amount of polymer was raised from 10% to 20%, the compressive strength also
went up. This happened because the polymer was able to fill in tiny cracks and gaps in the
cement, making the matrix more uniform and compact. As a result, it became more resistant to
being compressed. The reduction in the Young modulus was particularly noticeable when using a
10% PAC-R copolymer concentration. As the polymer concentration increased from 10% to
20%, the Young modulus values displayed an inclination to rise.
Description
Keywords
Type of access: Open Access, Polyanionic cellulose (PAC-R) polymer
Citation
Kuvanchbay, B. Tolegen, B. (2023). Physico-chemical of Polyanionic cellulose (PAC-R) polymer on Bonding Ability in the Cementing Material Used for Oil and Gas Well. School of Mining and Geosciences