Increasingly complex oil production formations and fracturing stimulation measures have put forward higher requirements for the performance of oil-well cement. Adding a certain amount of latex to the cement slurry can improve the ability of the cement to resist impact damage so that the integrity of cement can be maintained throughout the fracturing operation and the life cycle of the well. Therefore, this paper carried out rock mechanics experiments on cement stones doped with different latex contents (0%, 3%, 8%, 15%) under different stress paths, and clarified the effect of latex content on the deformation and strength parameters of cement stones. It finds that adding latex can improve the mechanical properties of cement stone and reduce its elastic modulus, but adding too much latex may cause large unrecoverable volumetric plastic deformation. With the increase of latex content, the elastic modulus of cement decreased significantly, and the uniaxial compressive strength of cement decreases with the increase of latex content, however, the decrease is not significant. The unrecoverable volumetric plastic deformation of cement increases with the increase of latex content, and it also increases with the increase of confining pressure. It provides theoretical support for the optimization of cement slurry systems and directs the fine design of cement slurry systems.
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The authors wish to acknowledge the financial support from the Petrochina Xinjiang Oilfield Company (Engineering Technology Institute).
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Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 5, pp. 129–133 September–October, 2022.
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Yuan, D., Wen, Y., Xie, S. et al. Experimental Study on Mechanical Properties of Cement Doped with Different Latex Contents. Chem Technol Fuels Oils 58, 887–894 (2022). https://doi.org/10.1007/s10553-022-01464-7
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DOI: https://doi.org/10.1007/s10553-022-01464-7