Analysis of Hydration Kinetics of Lithium Carbonate-Oil Well Cement at 4 ℃—Application to Cementing of Natural Gas Hydrate Layer

DOI

10.2991/978-94-6463-606-2_31How to use a DOI?

Keywords

low temperature environment; cementing slurry; lithium carbonate; hydration kinetics; hydration mechanism

Abstract

It is common for cement pastes to require high early strength when cementing in unusual locations, such as deepwater, ultra-deepwater, or cold polar seas. While prior research indicates that lithium salts may substantially enhance the early strength of cement pastes, the effect of TSL on the hydration process of oil well cement remains ambiguous. This study examined the effect of TSL on the hydration of Class G oil well cement at low temperatures by kinetic and microstructural evolution investigations. The study revealed that TSL enhances the extent of cement hydration and optimizes the hydration effects during the NG, I, and D phases of hydration. A superficial layer of calcium carbonate (Cc) hydration products enhanced the mechanical characteristics of cement pastes by facilitating the orderly growth of ettringite (AFt) and calcium hydroxide (CH) hydration products, as well as promoting the interlocking and densification of the spatial structure of hydrated calcium silicate (C-S-H). The compressive strength of cement pastes after 48 h at a curing temperature of 4 ℃ is 14.49 ± 0.31 MPa, meeting the requirements for cementing construction, when a TSL dosage of 4% is used. As a result, TSL has the potential to act as a low-temperature early-strengthening agent for Class G oil well cement, providing a theoretical and experimental foundation for addressing the issue of inadequate cement strength development and for developing early-strengthening cementing slurries for unconventional regions like deep water, ultra-deep water, and the polar cold sea.

Copyright

© 2024 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Download article (PDF)

TY  - CONF
AU  - Chengquan Li
AU  - Bo Liu
AU  - Chaoping Zhang
AU  - Zhaocai Yu
AU  - Tianan Deng
AU  - Huanjie Liu
AU  - Xiaohui Yang
AU  - Jingxuan Cai
PY  - 2024
DA  - 2024/12/24
TI  - Analysis of Hydration Kinetics of Lithium Carbonate-Oil Well Cement at 4 ℃—Application to Cementing of Natural Gas Hydrate Layer
BT  - Proceedings of the 2024 6th International Conference on Civil Engineering, Environment Resources and Energy Materials (CCESEM 2024)
PB  - Atlantis Press
SP  - 287
EP  - 309
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-606-2_31
DO  - 10.2991/978-94-6463-606-2_31
ID  - Li2024
ER  -