Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Microencapsulated phase change material-cement composites for cementing the natural gas hydrate layer
https://orcid.org/0000-0002-0176-4657
https://orcid.org/0000-0002-7919-5458
Highlights A MPCM suitable for cementing NGH layer was prepared. The strength and hydration heat release of MPCM-cement composite were analyzed. The action mechanism of MPCM on cement hydration was summarized. The influence model of MPCM content on thermal stability of NGH was established.
Abstract To cement natural gas hydrate (NGH) layers in the deep and ultra-deep water environment, cement slurries must display both low heat of hydration (HOH) and high early strength. Herein, chemical precipitation was used to prepare a microencapsulated phase change material (MPCM) comprising a core of phase change materials and a shell of silica. The MPCM could effectively control the temperature increase during cement hydration and improve the early strength of cement pastes by accelerating hardening. Comprehensive physical and chemical analyses were carried out to identify a suitable ratio of MPCM and its underlying mechanisms. A laboratory device was further used to test the effect of MPCM-cement composite slurries on the thermal stability of NGHs. The properties of this new cement slurry system meet the requirements for cementing NGH layers in deep and ultra-deep water areas. This cement composite has broad application potential in the oil and natural gas industry.
Microencapsulated phase change material-cement composites for cementing the natural gas hydrate layer
https://orcid.org/0000-0002-0176-4657
https://orcid.org/0000-0002-7919-5458
Highlights A MPCM suitable for cementing NGH layer was prepared. The strength and hydration heat release of MPCM-cement composite were analyzed. The action mechanism of MPCM on cement hydration was summarized. The influence model of MPCM content on thermal stability of NGH was established.
Abstract To cement natural gas hydrate (NGH) layers in the deep and ultra-deep water environment, cement slurries must display both low heat of hydration (HOH) and high early strength. Herein, chemical precipitation was used to prepare a microencapsulated phase change material (MPCM) comprising a core of phase change materials and a shell of silica. The MPCM could effectively control the temperature increase during cement hydration and improve the early strength of cement pastes by accelerating hardening. Comprehensive physical and chemical analyses were carried out to identify a suitable ratio of MPCM and its underlying mechanisms. A laboratory device was further used to test the effect of MPCM-cement composite slurries on the thermal stability of NGHs. The properties of this new cement slurry system meet the requirements for cementing NGH layers in deep and ultra-deep water areas. This cement composite has broad application potential in the oil and natural gas industry.
Microencapsulated phase change material-cement composites for cementing the natural gas hydrate layer
https://orcid.org/0000-0002-0176-4657
https://orcid.org/0000-0002-7919-5458
Highlights A MPCM suitable for cementing NGH layer was prepared. The strength and hydration heat release of MPCM-cement composite were analyzed. The action mechanism of MPCM on cement hydration was summarized. The influence model of MPCM content on thermal stability of NGH was established.
Abstract To cement natural gas hydrate (NGH) layers in the deep and ultra-deep water environment, cement slurries must display both low heat of hydration (HOH) and high early strength. Herein, chemical precipitation was used to prepare a microencapsulated phase change material (MPCM) comprising a core of phase change materials and a shell of silica. The MPCM could effectively control the temperature increase during cement hydration and improve the early strength of cement pastes by accelerating hardening. Comprehensive physical and chemical analyses were carried out to identify a suitable ratio of MPCM and its underlying mechanisms. A laboratory device was further used to test the effect of MPCM-cement composite slurries on the thermal stability of NGHs. The properties of this new cement slurry system meet the requirements for cementing NGH layers in deep and ultra-deep water areas. This cement composite has broad application potential in the oil and natural gas industry.
Microencapsulated phase change material-cement composites for cementing the natural gas hydrate layer
Cai, Jingxuan (Autor:in) / Zhou, Jinghong (Autor:in) / Liu, Cheng (Autor:in) / Mei, Kaiyuan (Autor:in) / Zhang, Chunmei (Autor:in) / Cheng, Xiaowei (Autor:in)
21.07.2023
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
CTAB , cetyltrimethyl ammonium bromide , CA , decanoic acid , DSC , differential scanning calorimetry , HOH , heat of hydration , DA , dodecanol , FT-IR , Fourier transform infrared , MPCM , microencapsulated phase change material , NGH , natural gas hydrate , PCM , phase change material , SEM , scanning electron microscopy , SDS , sodium dodecyl sulfate , Low-temperature cementing , Natural gas hydrates , Microencapsulated phase change material , Hydration heat , Thermal stability
Effect of microencapsulated phase change materials on the flow behavior of cement composites
| British Library Online Contents | 2019
| Europäisches Patentamt | 2020
| Europäisches Patentamt | 2024