Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Nano high-density anti-channeling cement paste and preparation method thereof
The invention provides nano high-density anti-channeling cement paste and a preparation method thereof. The cement paste is prepared from G-grade oil well cement, silicon powder, nano zinc oxide, nano magnesium oxide dispersion liquid, a fluid loss agent, a retarder, a dispersing agent, a defoaming agent and water. The density of the nano high-density anti-channeling cement paste is 1.95-2.60 g/cm < 3 >, and the nano high-density anti-channeling cement paste has the advantages that API water loss is smaller than 50 mL, free liquid is zero, sedimentation is avoided, set cement permeability is smaller than 0.01 mD, a gas channeling factor SPN value is smaller than 2, compressive strength is larger than 40 MPa, set cement is not shrunk, the nano high-density anti-channeling cement paste has a good anti-channeling effect, and ultra-deep well high-density cement paste well cementation can be improved.
本发明提出了一种纳米高密度防窜水泥浆及制备方法，该水泥浆由G级油井水泥、硅粉、纳米氧化锌、纳米氧化镁分散液、降失水剂、缓凝剂、分散剂、消泡剂、水组成；本发明的纳米高密度防窜水泥浆密度为1.95～2.60g/cm3，同时具有API失水小于50mL，零自由液，无沉降，水泥石渗透率小于0.01mD，气窜因子SPN值小于2，抗压强度大于40MPa，水泥石无收缩，具有较好的防窜作用，可提升超深井高密度水泥浆固井。
Nano high-density anti-channeling cement paste and preparation method thereof
The invention provides nano high-density anti-channeling cement paste and a preparation method thereof. The cement paste is prepared from G-grade oil well cement, silicon powder, nano zinc oxide, nano magnesium oxide dispersion liquid, a fluid loss agent, a retarder, a dispersing agent, a defoaming agent and water. The density of the nano high-density anti-channeling cement paste is 1.95-2.60 g/cm < 3 >, and the nano high-density anti-channeling cement paste has the advantages that API water loss is smaller than 50 mL, free liquid is zero, sedimentation is avoided, set cement permeability is smaller than 0.01 mD, a gas channeling factor SPN value is smaller than 2, compressive strength is larger than 40 MPa, set cement is not shrunk, the nano high-density anti-channeling cement paste has a good anti-channeling effect, and ultra-deep well high-density cement paste well cementation can be improved.
本发明提出了一种纳米高密度防窜水泥浆及制备方法，该水泥浆由G级油井水泥、硅粉、纳米氧化锌、纳米氧化镁分散液、降失水剂、缓凝剂、分散剂、消泡剂、水组成；本发明的纳米高密度防窜水泥浆密度为1.95～2.60g/cm3，同时具有API失水小于50mL，零自由液，无沉降，水泥石渗透率小于0.01mD，气窜因子SPN值小于2，抗压强度大于40MPa，水泥石无收缩，具有较好的防窜作用，可提升超深井高密度水泥浆固井。
Nano high-density anti-channeling cement paste and preparation method thereof
一种纳米高密度防窜水泥浆及制备方法
WEI HAOGUANG (Autor:in) / LI XIAOJIANG (Autor:in)
27.06.2023
Patent
Elektronische Ressource
Chinesisch
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