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Solid-solid phase change heat storage microsphere material and preparation and application thereof
The invention discloses a solid-solid phase change heat storage microsphere material and preparation and application thereof, and the solid-solid phase change heat storage microsphere material comprises modified paraffin, expandable graphite powder and silicon dioxide; the phase change temperature of the modified paraffin is 15-30 DEG C, and the latent heat of phase change is 220-330 J/g; the heat conductivity coefficient of the expandable graphite powder is greater than 5.0 W.m <-1 >. K <-1 >, and the mesh number is 200-300. The prepared solid-solid phase change heat storage microsphere material can effectively absorb heat released by hydration of low-temperature well cementation cement slurry, the solid-solid phase change heat storage microsphere material is introduced into low-temperature well cementation liquid, phase change latent heat is absorbed in the phase change process, the temperature is kept relatively stable, a hydrate stratum can be stabilized, and the well cementation efficiency is improved. A safe and efficient working environment is provided for the development of the natural gas hydrate layer, and the development pace of the deepwater natural gas hydrate is accelerated.
本发明公开了一种固‑固相变储热微球材料及其制备和应用，其中，该固‑固相变储热微球材料包含改性石蜡、可膨胀石墨粉、二氧化硅；该改性石蜡的相变温度为15‑30℃，相变潜热为220‑330J/g；该可膨胀石墨粉的导热系数大于5.0W·m‑1·K‑1，目数为200‑300目。本发明制得的固‑固相变储热微球材料可以对低温固井水泥浆水化放热进行有效吸收，将该固‑固相变储热微球材料引入到低温固井液中，其在相变过程中吸收相变潜热并保持温度相对稳定，能够稳定水合物地层，为天然气水合物层的开发提供安全、高效的工作环境，有利于加快深水天然气水合物的开发步伐。
Solid-solid phase change heat storage microsphere material and preparation and application thereof
The invention discloses a solid-solid phase change heat storage microsphere material and preparation and application thereof, and the solid-solid phase change heat storage microsphere material comprises modified paraffin, expandable graphite powder and silicon dioxide; the phase change temperature of the modified paraffin is 15-30 DEG C, and the latent heat of phase change is 220-330 J/g; the heat conductivity coefficient of the expandable graphite powder is greater than 5.0 W.m <-1 >. K <-1 >, and the mesh number is 200-300. The prepared solid-solid phase change heat storage microsphere material can effectively absorb heat released by hydration of low-temperature well cementation cement slurry, the solid-solid phase change heat storage microsphere material is introduced into low-temperature well cementation liquid, phase change latent heat is absorbed in the phase change process, the temperature is kept relatively stable, a hydrate stratum can be stabilized, and the well cementation efficiency is improved. A safe and efficient working environment is provided for the development of the natural gas hydrate layer, and the development pace of the deepwater natural gas hydrate is accelerated.
本发明公开了一种固‑固相变储热微球材料及其制备和应用，其中，该固‑固相变储热微球材料包含改性石蜡、可膨胀石墨粉、二氧化硅；该改性石蜡的相变温度为15‑30℃，相变潜热为220‑330J/g；该可膨胀石墨粉的导热系数大于5.0W·m‑1·K‑1，目数为200‑300目。本发明制得的固‑固相变储热微球材料可以对低温固井水泥浆水化放热进行有效吸收，将该固‑固相变储热微球材料引入到低温固井液中，其在相变过程中吸收相变潜热并保持温度相对稳定，能够稳定水合物地层，为天然气水合物层的开发提供安全、高效的工作环境，有利于加快深水天然气水合物的开发步伐。
Solid-solid phase change heat storage microsphere material and preparation and application thereof
一种固-固相变储热微球材料及其制备和应用
WANG CHENGWEN (author) / ZHANG HEEN (author) / XIA DONG (author) / XUE YUCHENG (author) / XU HONGZHI (author) / XIA YUANBO (author) / WANG JIANYAO (author) / HUANG ZHIGANG (author) / DENG JUNYU (author) / WANG TIANJU (author)
2024-06-18
Patent
Electronic Resource
Chinese
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