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Toughening expanding agent for well cementation cement paste and toughening micro-expansion cement paste system
The invention discloses a toughening expanding agent for well cementation cement paste and a toughening micro-expansion cement paste system, and belongs to the field of oil and gas well cementation engineering. The toughening expanding agent for the well cementation cement paste comprises the following components in percentage by weight 35-55wt% of calcium carbonate whisker, 30-38wt% of aluminum oxide, 15-22wt% of calcium oxide and 1-3wt% of magnesium oxide. The water-cement ratio of the toughening micro-expansion cement paste system is 0.44. The cement and the additive comprise the followingcomponent: a portland cement fluid loss agent, a dispersing agent and a defoaming agent. The toughening expanding agent for the well cementation cement slurry prepared by the invention can obviously improve the mechanical property and the volume shrinkage amount of set cement, so that the brittleness of the set cement is reduced, the volume shrinkage degree of the set cement is reduced, the anti-channeling performance is improved, and the toughening expanding agent has important significance for improving the quality of an oil well and prolonging the service life of the oil well.
本发明公开了一种固井水泥浆用增韧膨胀剂及韧性微膨胀水泥浆体系，属于油气井固井工程领域。所述固井水泥浆用增韧膨胀剂，以重量百分含量计，包括以下组分：碳酸钙晶须35～55wt％、氧化铝30～38wt％、氧化钙15～22wt％、氧化镁1～3wt％。所述韧性微膨胀水泥浆体系的水灰比为0.44，其水泥及添加剂包含以下组分：硅酸盐水泥降失水剂、分散剂和消泡剂，本发明所制备的固井水泥浆用增韧膨胀剂可以明显改善水泥石的力学性能与体积收缩量，使水泥石脆性降低、体积收缩程度减小，防窜性能増加，对于改善油井质量、延长油井寿命具有重要的意义。
Toughening expanding agent for well cementation cement paste and toughening micro-expansion cement paste system
The invention discloses a toughening expanding agent for well cementation cement paste and a toughening micro-expansion cement paste system, and belongs to the field of oil and gas well cementation engineering. The toughening expanding agent for the well cementation cement paste comprises the following components in percentage by weight 35-55wt% of calcium carbonate whisker, 30-38wt% of aluminum oxide, 15-22wt% of calcium oxide and 1-3wt% of magnesium oxide. The water-cement ratio of the toughening micro-expansion cement paste system is 0.44. The cement and the additive comprise the followingcomponent: a portland cement fluid loss agent, a dispersing agent and a defoaming agent. The toughening expanding agent for the well cementation cement slurry prepared by the invention can obviously improve the mechanical property and the volume shrinkage amount of set cement, so that the brittleness of the set cement is reduced, the volume shrinkage degree of the set cement is reduced, the anti-channeling performance is improved, and the toughening expanding agent has important significance for improving the quality of an oil well and prolonging the service life of the oil well.
本发明公开了一种固井水泥浆用增韧膨胀剂及韧性微膨胀水泥浆体系，属于油气井固井工程领域。所述固井水泥浆用增韧膨胀剂，以重量百分含量计，包括以下组分：碳酸钙晶须35～55wt％、氧化铝30～38wt％、氧化钙15～22wt％、氧化镁1～3wt％。所述韧性微膨胀水泥浆体系的水灰比为0.44，其水泥及添加剂包含以下组分：硅酸盐水泥降失水剂、分散剂和消泡剂，本发明所制备的固井水泥浆用增韧膨胀剂可以明显改善水泥石的力学性能与体积收缩量，使水泥石脆性降低、体积收缩程度减小，防窜性能増加，对于改善油井质量、延长油井寿命具有重要的意义。
Toughening expanding agent for well cementation cement paste and toughening micro-expansion cement paste system
固井水泥浆用增韧膨胀剂及韧性微膨胀水泥浆体系
HUANG YI (author) / LI ZHONG (author) / PENG ZHIGANG (author) / CHEN HAODONG (author) / LIU HEXING (author) / YAN BANGCHUAN (author) / DU WEI (author) / GU CHUNWEI (author) / XU BIHUA (author) / WU YI (author)
2020-07-28
Patent
Electronic Resource
Chinese
Preparation method of oil well cement toughening expanding agent
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