Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Elastic and tough micro-expansive cement paste and preparation method thereof
The invention relates to the technical field of well cementation cement paste, in particular to elastic and tough micro-expansive cement paste and a preparation method thereof.The elastic and tough micro-expansive cement paste is prepared from cement, an elastic granular material, coarse silica sand, micro-silica powder, superfine cement, an expanding agent, iron ore powder, a composite fiber toughening agent, a fluid loss agent, a drag reducer, a retarder, a reinforcing agent, a defoaming agent and water; the concrete is obtained according to the following method: uniformly mixing cement, an elastic granular material, coarse silica sand, silica fume, superfine cement, an expanding agent and iron ore powder to obtain a solid mixture, adding a fluid loss agent, a reinforcing agent, a drag reducer, a retarder and a defoaming agent into water, uniformly mixing to obtain a liquid mixture, uniformly mixing the solid mixture and the liquid mixture, and carrying out extrusion molding to obtain the concrete. And then adding the composite fiber toughening agent and uniformly mixing. The elastic and tough micro-expansion cement paste has the characteristics of high compression resistance, high tensile strength, low Young modulus, micro-expansion, strong cementation capability and low permeability, and can meet the pilot production requirements of perforation and large-scale fracturing.
本发明涉及固井水泥浆技术领域，是一种弹韧性微膨胀水泥浆及其制备方法，前者原料包括水泥、弹性颗粒材料、粗硅砂、微硅粉、超细水泥、膨胀剂、铁矿粉、复合纤维增韧剂、降失水剂、减阻剂、缓凝剂、增强剂、消泡剂和水，按照下述方法得到：将水泥、弹性颗粒材料、粗硅砂、微硅粉、超细水泥、膨胀剂和铁矿粉混匀后，得到固体混合物，向水中加入降失水剂、增强剂、减阻剂、缓凝剂和消泡剂混匀后，得到液体混合物，将固体混合物和液体混合物混匀，再加入复合纤维增韧剂混匀后得到。本发明弹韧性微膨胀水泥浆具有抗压、抗拉强度高，杨氏模量低，微膨胀，胶结能力强，渗透率低的特点，能够满足射孔及大规模压裂的试采要求。
Elastic and tough micro-expansive cement paste and preparation method thereof
The invention relates to the technical field of well cementation cement paste, in particular to elastic and tough micro-expansive cement paste and a preparation method thereof.The elastic and tough micro-expansive cement paste is prepared from cement, an elastic granular material, coarse silica sand, micro-silica powder, superfine cement, an expanding agent, iron ore powder, a composite fiber toughening agent, a fluid loss agent, a drag reducer, a retarder, a reinforcing agent, a defoaming agent and water; the concrete is obtained according to the following method: uniformly mixing cement, an elastic granular material, coarse silica sand, silica fume, superfine cement, an expanding agent and iron ore powder to obtain a solid mixture, adding a fluid loss agent, a reinforcing agent, a drag reducer, a retarder and a defoaming agent into water, uniformly mixing to obtain a liquid mixture, uniformly mixing the solid mixture and the liquid mixture, and carrying out extrusion molding to obtain the concrete. And then adding the composite fiber toughening agent and uniformly mixing. The elastic and tough micro-expansion cement paste has the characteristics of high compression resistance, high tensile strength, low Young modulus, micro-expansion, strong cementation capability and low permeability, and can meet the pilot production requirements of perforation and large-scale fracturing.
本发明涉及固井水泥浆技术领域，是一种弹韧性微膨胀水泥浆及其制备方法，前者原料包括水泥、弹性颗粒材料、粗硅砂、微硅粉、超细水泥、膨胀剂、铁矿粉、复合纤维增韧剂、降失水剂、减阻剂、缓凝剂、增强剂、消泡剂和水，按照下述方法得到：将水泥、弹性颗粒材料、粗硅砂、微硅粉、超细水泥、膨胀剂和铁矿粉混匀后，得到固体混合物，向水中加入降失水剂、增强剂、减阻剂、缓凝剂和消泡剂混匀后，得到液体混合物，将固体混合物和液体混合物混匀，再加入复合纤维增韧剂混匀后得到。本发明弹韧性微膨胀水泥浆具有抗压、抗拉强度高，杨氏模量低，微膨胀，胶结能力强，渗透率低的特点，能够满足射孔及大规模压裂的试采要求。
Elastic and tough micro-expansive cement paste and preparation method thereof
一种弹韧性微膨胀水泥浆及其制备方法
LI LIANGBING (Autor:in) / MA JIANG (Autor:in) / WANG YUN (Autor:in) / QI JING (Autor:in) / DENG LIN (Autor:in) / ZHU WEILUN (Autor:in) / DI XINYE (Autor:in)
28.02.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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