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A platform for research: civil engineering, architecture and urbanism
Low-permeability high-temperature-resistant well cementation material as well as preparation method and application thereof
The invention belongs to the technical field of heavy oil thermal recovery, and discloses a low-permeability high-temperature-resistant well cementation material as well as a preparation method and application thereof. The low-permeability high-temperature-resistant cementing material is prepared by taking aluminate cement as a high-temperature-resistant cementing material, taking a volcanic ash active substance as an auxiliary cementing material, and combining with an additive by utilizing the coagulation effect of silica sol and the filling and sintering effects of nanoparticles. The low-permeability high-temperature-resistant well cementation material system obtained by the invention has good engineering performance, and can meet the field operation requirements of well cementation of a heavy oil thermal production well; meanwhile, as the industrial active waste residues, the waste glass powder, the silica sol and the toughening material are added into the system to jointly act on the aluminate cement, the permeability resistance of the set cement is improved, and the compressive strength decline rate of the set cement at high temperature is less than or equal to 5%, so that the set cement shows excellent mechanical properties and low permeability; the performance requirements of thermal production well working conditions on the high-temperature long-term stability of the set cement can be met.
本发明属于稠油热开采技术领域，公开了一种低渗透抗高温固井材料及其制备方法与应用。本发明以铝酸盐水泥为抗高温胶凝材料，以火山灰活性物质为辅助胶凝材料，同时利用硅溶胶的凝聚作用和纳米粒子的填充及烧结作用，与外加剂进行配伍，制备了一种低渗透抗高温固井材料。本发明所得低渗透抗高温固井材料体系具有良好的工程性能，能满足稠油热采井固井现场作业需求；同时由于体系中加入了工业活性废渣、废玻璃粉、硅溶胶及增韧材料共同作用于铝酸盐水泥，提高了水泥石的抗渗透性，且高温下水泥石抗压强度衰退率≤5％，因而表现出了优良的力学性能及低渗透性能，能满足热采井工况对水泥石高温长期稳定性的性能要求。
Low-permeability high-temperature-resistant well cementation material as well as preparation method and application thereof
The invention belongs to the technical field of heavy oil thermal recovery, and discloses a low-permeability high-temperature-resistant well cementation material as well as a preparation method and application thereof. The low-permeability high-temperature-resistant cementing material is prepared by taking aluminate cement as a high-temperature-resistant cementing material, taking a volcanic ash active substance as an auxiliary cementing material, and combining with an additive by utilizing the coagulation effect of silica sol and the filling and sintering effects of nanoparticles. The low-permeability high-temperature-resistant well cementation material system obtained by the invention has good engineering performance, and can meet the field operation requirements of well cementation of a heavy oil thermal production well; meanwhile, as the industrial active waste residues, the waste glass powder, the silica sol and the toughening material are added into the system to jointly act on the aluminate cement, the permeability resistance of the set cement is improved, and the compressive strength decline rate of the set cement at high temperature is less than or equal to 5%, so that the set cement shows excellent mechanical properties and low permeability; the performance requirements of thermal production well working conditions on the high-temperature long-term stability of the set cement can be met.
本发明属于稠油热开采技术领域，公开了一种低渗透抗高温固井材料及其制备方法与应用。本发明以铝酸盐水泥为抗高温胶凝材料，以火山灰活性物质为辅助胶凝材料，同时利用硅溶胶的凝聚作用和纳米粒子的填充及烧结作用，与外加剂进行配伍，制备了一种低渗透抗高温固井材料。本发明所得低渗透抗高温固井材料体系具有良好的工程性能，能满足稠油热采井固井现场作业需求；同时由于体系中加入了工业活性废渣、废玻璃粉、硅溶胶及增韧材料共同作用于铝酸盐水泥，提高了水泥石的抗渗透性，且高温下水泥石抗压强度衰退率≤5％，因而表现出了优良的力学性能及低渗透性能，能满足热采井工况对水泥石高温长期稳定性的性能要求。
Low-permeability high-temperature-resistant well cementation material as well as preparation method and application thereof
一种低渗透抗高温固井材料及其制备方法与应用
LI PANPAN (author) / LI MINGZE (author) / LI RONG (author) / BAI YONGTAI (author) / XU PING (author) / HOU XINWEN (author) / LYU BAOYU (author) / WANG LU (author) / WANG YA (author)
2024-10-29
Patent
Electronic Resource
Chinese
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