Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Anti-recession cement paste system and preparation method thereof
The invention discloses an anti-recession cement slurry system, which comprises an oil well cement anti-recession agent, and the oil well cement anti-recession agent comprises the following components: a component (1), namely 30-60 parts of silica; and a component (2), namely 40-70 parts of aluminum oxide. Based on 100 parts by weight of cement, the system is prepared from the following componentsin parts by weight: 20-40 parts of the oil well cement anti-recession agent, 1-20 parts of a fluid loss agent, 0.1-3 parts of a dispersing agent, 0-25 parts of micro-silicon, 0.01-1 part of tributylphosphate, 0.01-2 parts of a retarder, 0-50 parts of a density regulator and 35-120 parts of water. According to the cement paste system, cement hydration products can be changed, the compactness of set cement is improved, the porosity and permeability of the set cement are reduced, and therefore decline of the strength of oil well cement under the ultra-deep well high-temperature complex condition can be effectively restrained.
本发明公开了一种防衰退水泥浆体系，包括油井水泥防衰退剂，所述油井水泥防衰退剂包括如下组分：组分(1)，二氧化硅，30‑60份；组分(2)，三氧化二铝，40‑70份。以水泥重量为100份计，所述油井水泥防衰退剂的重量为20～40份，降失水剂1‑20份，分散剂0.1‑3份，微硅0‑25份，磷酸三丁酯0.01‑1份，缓凝剂0.01‑2份，密度调节剂0‑50份，水35‑120份。本发明的水泥浆体系可以改变水泥水化产物，提高水泥石的密实性，降低水泥石的孔隙度和渗透率，从而可以有效抑制超深井高温复杂条件下油井水泥强度的衰退。
Anti-recession cement paste system and preparation method thereof
The invention discloses an anti-recession cement slurry system, which comprises an oil well cement anti-recession agent, and the oil well cement anti-recession agent comprises the following components: a component (1), namely 30-60 parts of silica; and a component (2), namely 40-70 parts of aluminum oxide. Based on 100 parts by weight of cement, the system is prepared from the following componentsin parts by weight: 20-40 parts of the oil well cement anti-recession agent, 1-20 parts of a fluid loss agent, 0.1-3 parts of a dispersing agent, 0-25 parts of micro-silicon, 0.01-1 part of tributylphosphate, 0.01-2 parts of a retarder, 0-50 parts of a density regulator and 35-120 parts of water. According to the cement paste system, cement hydration products can be changed, the compactness of set cement is improved, the porosity and permeability of the set cement are reduced, and therefore decline of the strength of oil well cement under the ultra-deep well high-temperature complex condition can be effectively restrained.
本发明公开了一种防衰退水泥浆体系，包括油井水泥防衰退剂，所述油井水泥防衰退剂包括如下组分：组分(1)，二氧化硅，30‑60份；组分(2)，三氧化二铝，40‑70份。以水泥重量为100份计，所述油井水泥防衰退剂的重量为20～40份，降失水剂1‑20份，分散剂0.1‑3份，微硅0‑25份，磷酸三丁酯0.01‑1份，缓凝剂0.01‑2份，密度调节剂0‑50份，水35‑120份。本发明的水泥浆体系可以改变水泥水化产物，提高水泥石的密实性，降低水泥石的孔隙度和渗透率，从而可以有效抑制超深井高温复杂条件下油井水泥强度的衰退。
Anti-recession cement paste system and preparation method thereof
一种防衰退水泥浆体系及其制备方法
TAN CHUNQIN (Autor:in) / WANG XIAOJING (Autor:in) / YANG HONGQI (Autor:in) / WEI HAOGUANG (Autor:in) / ZHOU SHIMING (Autor:in) / CHU GUANGCHUAN (Autor:in)
26.03.2021
Patent
Elektronische Ressource
Chinesisch
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