Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of oil well cement toughening expanding agent
The invention discloses a preparation method of an oil well cement toughening expanding agent. The preparation method sequentially comprises the following steps: S1, grinding coconut shell powder and shell powder through a ball mill; s2, calcining the shell powder at high temperature to obtain powder A; s3, cooling the powder A, mixing with coconut shell powder, and calcining to obtain powder B; s4, mixing and stirring Arabic gum and water to obtain a solution C; s5, mixing and stirring the solution C and the powder B to obtain a solution D; and S6, performing spray granulation on the solution D to obtain the toughening expanding agent. The cement toughening expanding agent is added into oil well cement to obtain well cementation cement with good gas channeling prevention and crack resistance. The mass percentage of the toughening expanding agent in the oil well cement is 4-5%. According to the present invention, the principle is reliable, the operation is simple and convenient, the coconut shell powder is blended into the CaO to prepare the expanding agent, such that the volume shrinkage during the cement hydration process can be reduced, and the toughening property of the well cementation cement sheath can be improved so as to prevent the fluid channeling and ensure the good integrity of the well cementation cement sheath.
本发明公开了一种油井水泥增韧膨胀剂的制备方法，依次包括如下步骤：S1、将椰壳粉和贝壳粉经球磨机研磨；S2、所述贝壳粉高温煅烧制得A粉；S3、A粉降温后与椰壳粉混合并煅烧制得B粉；S4、将阿拉伯胶与水混合搅拌得到C溶液；S5、所述C溶液与B粉混合搅拌得到D溶液；S6、将D溶液经喷雾造粒得增韧膨胀剂。将所述水泥增韧膨胀剂添加至油井水泥中，得到具有良好防气窜、抗裂性能的固井水泥。所述增韧膨胀剂在油井水泥中的质量百分含量为4~5%。本发明原理可靠，操作简便，通过将椰壳粉融入CaO制备膨胀剂，能够减小水泥水化过程中的体积收缩，提高固井水泥环增韧性能，从而防止窜流发生，保证固井水泥环拥有较好的完整性。
Preparation method of oil well cement toughening expanding agent
The invention discloses a preparation method of an oil well cement toughening expanding agent. The preparation method sequentially comprises the following steps: S1, grinding coconut shell powder and shell powder through a ball mill; s2, calcining the shell powder at high temperature to obtain powder A; s3, cooling the powder A, mixing with coconut shell powder, and calcining to obtain powder B; s4, mixing and stirring Arabic gum and water to obtain a solution C; s5, mixing and stirring the solution C and the powder B to obtain a solution D; and S6, performing spray granulation on the solution D to obtain the toughening expanding agent. The cement toughening expanding agent is added into oil well cement to obtain well cementation cement with good gas channeling prevention and crack resistance. The mass percentage of the toughening expanding agent in the oil well cement is 4-5%. According to the present invention, the principle is reliable, the operation is simple and convenient, the coconut shell powder is blended into the CaO to prepare the expanding agent, such that the volume shrinkage during the cement hydration process can be reduced, and the toughening property of the well cementation cement sheath can be improved so as to prevent the fluid channeling and ensure the good integrity of the well cementation cement sheath.
本发明公开了一种油井水泥增韧膨胀剂的制备方法，依次包括如下步骤：S1、将椰壳粉和贝壳粉经球磨机研磨；S2、所述贝壳粉高温煅烧制得A粉；S3、A粉降温后与椰壳粉混合并煅烧制得B粉；S4、将阿拉伯胶与水混合搅拌得到C溶液；S5、所述C溶液与B粉混合搅拌得到D溶液；S6、将D溶液经喷雾造粒得增韧膨胀剂。将所述水泥增韧膨胀剂添加至油井水泥中，得到具有良好防气窜、抗裂性能的固井水泥。所述增韧膨胀剂在油井水泥中的质量百分含量为4~5%。本发明原理可靠，操作简便，通过将椰壳粉融入CaO制备膨胀剂，能够减小水泥水化过程中的体积收缩，提高固井水泥环增韧性能，从而防止窜流发生，保证固井水泥环拥有较好的完整性。
Preparation method of oil well cement toughening expanding agent
一种油井水泥增韧膨胀剂的制备方法
CHENG XIAOWEI (Autor:in) / LIU TAO (Autor:in) / MA YONG (Autor:in) / WANG YAO (Autor:in) / ZHOU JINGHONG (Autor:in) / ZHANG CHUNMEI (Autor:in) / GONG PENG (Autor:in) / MEI KAIYUAN (Autor:in)
16.01.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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