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A platform for research: civil engineering, architecture and urbanism
High-thermal-conductivity well cementing material as well as preparation method and application thereof
The invention belongs to the technical field of medium-deep underground heat exchange well cementation, and discloses a well cementation material with high thermal conductivity and a preparation method and application thereof.The well cementation material is prepared by the steps that cement, graphite powder, a super plasticizer and water are sequentially added and stirred to be evenly mixed, and a uniform mixture material is obtained; and carrying out injection molding on the uniformly stirred mixture, and demolding after 24 hours under natural conditions. The formula design is scientific and reasonable, and graphite is an inorganic material and has excellent heat-conducting property. Graphite does not participate in hydration reaction of cement, the hydration process of the cement can be promoted through introduction of the superplasticizer, the cement can be hydrated more fully, hydration products are more, unhydrated cement particles are effectively reduced, the high-thermal-conductivity well cementation material is more compact in overall structure, few in pores and small in pores, thermal resistance in the heat transfer process is reduced, and the service life of the well cementation material is prolonged. The heat-conducting property of the well cementation material is greatly improved, so that the heat exchange efficiency of a geothermal well is effectively improved, and obvious social benefits and economic benefits are generated.
本发明属于中深层井下换热固井技术领域，公开了一种高导热固井材料及其制备方法与应用，按顺序分别加入水泥、石墨粉、超塑化剂、水，搅拌至混合均匀，得到均匀的混合物材料；将搅拌均匀后的混合物注模成型，自然条件下，24h后脱模。本发明配方设计科学合理，石墨为无机材料，其材料本身导热性能优异。石墨不参与水泥的水化反应，通过超塑化剂的引入，可以促进水泥的水化进程，使水泥水化更充分，水化产物更多，有效减少未水化的水泥颗粒，使得高导热固井材料整体结构更密实，孔隙少，孔隙小，减少热量传递过程中的热阻，大大提高了固井材料的导热性能，从而有效地提高地热井的换热效率，产生明显的社会效益和经济效益。
High-thermal-conductivity well cementing material as well as preparation method and application thereof
The invention belongs to the technical field of medium-deep underground heat exchange well cementation, and discloses a well cementation material with high thermal conductivity and a preparation method and application thereof.The well cementation material is prepared by the steps that cement, graphite powder, a super plasticizer and water are sequentially added and stirred to be evenly mixed, and a uniform mixture material is obtained; and carrying out injection molding on the uniformly stirred mixture, and demolding after 24 hours under natural conditions. The formula design is scientific and reasonable, and graphite is an inorganic material and has excellent heat-conducting property. Graphite does not participate in hydration reaction of cement, the hydration process of the cement can be promoted through introduction of the superplasticizer, the cement can be hydrated more fully, hydration products are more, unhydrated cement particles are effectively reduced, the high-thermal-conductivity well cementation material is more compact in overall structure, few in pores and small in pores, thermal resistance in the heat transfer process is reduced, and the service life of the well cementation material is prolonged. The heat-conducting property of the well cementation material is greatly improved, so that the heat exchange efficiency of a geothermal well is effectively improved, and obvious social benefits and economic benefits are generated.
本发明属于中深层井下换热固井技术领域，公开了一种高导热固井材料及其制备方法与应用，按顺序分别加入水泥、石墨粉、超塑化剂、水，搅拌至混合均匀，得到均匀的混合物材料；将搅拌均匀后的混合物注模成型，自然条件下，24h后脱模。本发明配方设计科学合理，石墨为无机材料，其材料本身导热性能优异。石墨不参与水泥的水化反应，通过超塑化剂的引入，可以促进水泥的水化进程，使水泥水化更充分，水化产物更多，有效减少未水化的水泥颗粒，使得高导热固井材料整体结构更密实，孔隙少，孔隙小，减少热量传递过程中的热阻，大大提高了固井材料的导热性能，从而有效地提高地热井的换热效率，产生明显的社会效益和经济效益。
High-thermal-conductivity well cementing material as well as preparation method and application thereof
一种高导热固井材料及其制备方法与应用
SHAO JIANXIN (author) / ZHANG LEI (author) / ZHANG HONGBAO (author) / ZHAO HAILONG (author) / LIU XIN (author) / WANG LEI (author) / DONG YINGXIN (author) / XIONG YAOHUA (author) / MAN ANJING (author) / HONG BO (author)
2024-05-07
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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