A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Novel ultralow-density cementing fluid
The invention discloses an ultralow-density high-strength well cementing fluid which comprises the following components in percentage by mass: 10-30% of a modified perlite vitrified microbead lightening material, 60-75% of a reinforcing material, 5-9% of a coagulation accelerating early strength agent, 5-9% of a coagulation accelerating early strength additive and 10-15% of G-grade cement. The perlite vitrified microbeads in the lightweight material are subjected to surface treatment, and the components interact under a calcium-containing alkaline condition to realize physical and chemical reactions, so that the obtained mixture can realize good thixotropy and high coagulation strength; and in the using process, the ultra-low-density high-strength well cementing fluid and an ultra-low-density well cementing fluid leading slurry system (prepad fluid) can be obtained through the material proportion. The well cementing fluid leading slurry system has good compatibility with the drilling fluid, that is, the well cementing fluid leading slurry system is not afraid of pollution of the drilling fluid. Therefore, the replacement efficiency can be improved, the mixed slurry can be reduced and the well cementing quality can be improved by using the well cementing fluid leading slurry system for well cementation construction.
本发明公开了一种超低密度高强固井液，按照质量比，其包括：改性珍珠岩玻化微珠减轻材料10‑30%，增强材料60‑75%，促凝早强剂5‑9%，促凝早强助剂5‑9%，G级水泥10‑15%。减轻材料中的珍珠岩玻化微珠通过表面处理，及以上组分在含钙碱性条件下相互作用实现物理化学反应，所得到的混合物可实现很好的触变性以及高的凝结强度；其在使用过程中，通过以上物料配比可得到超低密度高强固井液以及超低密度固井液领浆体系（前置液）。固井液领浆体系与钻井液有很好的相容性，即不怕钻井液污染。所以使用固井液领浆体系固井施工，能够提高置换效率减少混浆，提高固井质量。
Novel ultralow-density cementing fluid
The invention discloses an ultralow-density high-strength well cementing fluid which comprises the following components in percentage by mass: 10-30% of a modified perlite vitrified microbead lightening material, 60-75% of a reinforcing material, 5-9% of a coagulation accelerating early strength agent, 5-9% of a coagulation accelerating early strength additive and 10-15% of G-grade cement. The perlite vitrified microbeads in the lightweight material are subjected to surface treatment, and the components interact under a calcium-containing alkaline condition to realize physical and chemical reactions, so that the obtained mixture can realize good thixotropy and high coagulation strength; and in the using process, the ultra-low-density high-strength well cementing fluid and an ultra-low-density well cementing fluid leading slurry system (prepad fluid) can be obtained through the material proportion. The well cementing fluid leading slurry system has good compatibility with the drilling fluid, that is, the well cementing fluid leading slurry system is not afraid of pollution of the drilling fluid. Therefore, the replacement efficiency can be improved, the mixed slurry can be reduced and the well cementing quality can be improved by using the well cementing fluid leading slurry system for well cementation construction.
本发明公开了一种超低密度高强固井液，按照质量比，其包括：改性珍珠岩玻化微珠减轻材料10‑30%，增强材料60‑75%，促凝早强剂5‑9%，促凝早强助剂5‑9%，G级水泥10‑15%。减轻材料中的珍珠岩玻化微珠通过表面处理，及以上组分在含钙碱性条件下相互作用实现物理化学反应，所得到的混合物可实现很好的触变性以及高的凝结强度；其在使用过程中，通过以上物料配比可得到超低密度高强固井液以及超低密度固井液领浆体系（前置液）。固井液领浆体系与钻井液有很好的相容性，即不怕钻井液污染。所以使用固井液领浆体系固井施工，能够提高置换效率减少混浆，提高固井质量。
Novel ultralow-density cementing fluid
新型超低密度固井液
SHI YONGSHENG (author) / WU YANG (author) / CHANG LEI (author) / DONG XIAOLONG (author) / BI QINGFENG (author) / TIAN DONGCHENG (author)
2021-06-29
Patent
Electronic Resource
Chinese
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