Effects of Curing Pressure on the Long-Term Strength Retrogression of Oil Well Cement Cured under 200 °C

Hongtao Liu, Jiankun Qin, Bo Zhou, Zhongfei Liu, Zhongtao Yuan, Zhi Zhang, Zhengqing Ai, Xueyu Pang () and Xiaolin Liu
Additional contact information
Hongtao Liu: Oil and Gas Engineering Research Institute, PetroChina Tarim Oilfield Company, Korla 841000, China
Jiankun Qin: School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
Bo Zhou: Oil and Gas Engineering Research Institute, PetroChina Tarim Oilfield Company, Korla 841000, China
Zhongfei Liu: Oil and Gas Engineering Research Institute, PetroChina Tarim Oilfield Company, Korla 841000, China
Zhongtao Yuan: Oil and Gas Engineering Research Institute, PetroChina Tarim Oilfield Company, Korla 841000, China
Zhi Zhang: Oil and Gas Engineering Research Institute, PetroChina Tarim Oilfield Company, Korla 841000, China
Zhengqing Ai: Oil and Gas Engineering Research Institute, PetroChina Tarim Oilfield Company, Korla 841000, China
Xueyu Pang: School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
Xiaolin Liu: Supervision Center, PetroChina Tarim Oilfield Company, Korla 841000, China

Energies, 2022, vol. 15, issue 16, 1-19

Abstract: The influences of curing pressure on the physical and mechanical property development of oil well cement during long-term curing were studied. Five silica-enriched cement slurries designed without and with reinforcement materials (latex fiber and nano-graphene) were autoclaved at 200 °C under two different pressures. The low pressure (50 MPa) curing was conducted for 2, 60, 90 and 180 days; the high pressure (150 MPa) curing was conducted for 2 and 360 days. The physical and mechanical properties of set cement were characterized by compressive strength, Young’s modulus, and water/gas permeability; the mineral composition and microstructure were determined by X-ray diffraction, mercury intrusion porosimetry, thermogravimetry and scanning electron microscope. Test results showed that high pressure (150 MPa) curing led to a more compact microstructure, which reduced the rate of strength retrogression in the long term. Samples with reinforcement materials, especially the latex fiber, showed higher compressive strength, Young’s modulus and lower permeability during long-term curing at both pressures.

Keywords: high pressure; high temperature; strength retrogression; Young’s modulus; reinforcement materials; mercury intrusion porosimetry (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/1996-1073/15/16/6071/pdf (application/pdf)
https://www.mdpi.com/1996-1073/15/16/6071/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:15:y:2022:i:16:p:6071-:d:894170

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().