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High-temperature-resistant elastic and tough cement paste system for shale oil-gas well
The invention discloses a high-temperature-resistant elastic and tough cement paste system for a shale oil-gas well, and belongs to the technical field of cement paste systems. The cement paste system comprises the following components in parts by weight: 100 parts of cement, 2-5 parts of a toughening material, 4-10 parts of an elastic material, 3-20 parts of a reinforcing material, 10-45 parts of a high-temperature strength stabilizer, 0-120 parts of a density regulator, 0.5-1 part of a dispersing agent, 2-4 parts of a retarder, 3-7 parts of a fluid loss agent and 0.1-1 part of a defoaming agent. According to the cement paste disclosed by the invention, a novel elastic and tough material is added into the cement paste, so that set cement has the characteristics of high strength, low elastic modulus, low permeability and the like, and the stress deformation of a cement sheath when the cement sheath is impacted is improved, so that the requirements of field application of the shale oil-gas well are met.
本发明公开了一种页岩油气井耐高温弹韧性水泥浆体系，属于水泥浆体系技术领域，该水泥浆体系包含以下重量份数的组分：100份水泥、2～5份增韧材料、4～10份弹性材料、3～20份增强材料、10～45份高温强度稳定剂、0～120份密度调节剂、0.5～1份分散剂、2～4份缓凝剂、3～7份降失水剂、0.1～1份消泡剂。本发明的水泥浆通过向水泥浆中加入新型弹韧性材料，让水泥石具有高强度、低弹模、低渗透等特点，改善水泥环受到冲击时的应力变形，以满足页岩油气井现场应用的要求。
High-temperature-resistant elastic and tough cement paste system for shale oil-gas well
The invention discloses a high-temperature-resistant elastic and tough cement paste system for a shale oil-gas well, and belongs to the technical field of cement paste systems. The cement paste system comprises the following components in parts by weight: 100 parts of cement, 2-5 parts of a toughening material, 4-10 parts of an elastic material, 3-20 parts of a reinforcing material, 10-45 parts of a high-temperature strength stabilizer, 0-120 parts of a density regulator, 0.5-1 part of a dispersing agent, 2-4 parts of a retarder, 3-7 parts of a fluid loss agent and 0.1-1 part of a defoaming agent. According to the cement paste disclosed by the invention, a novel elastic and tough material is added into the cement paste, so that set cement has the characteristics of high strength, low elastic modulus, low permeability and the like, and the stress deformation of a cement sheath when the cement sheath is impacted is improved, so that the requirements of field application of the shale oil-gas well are met.
本发明公开了一种页岩油气井耐高温弹韧性水泥浆体系，属于水泥浆体系技术领域，该水泥浆体系包含以下重量份数的组分：100份水泥、2～5份增韧材料、4～10份弹性材料、3～20份增强材料、10～45份高温强度稳定剂、0～120份密度调节剂、0.5～1份分散剂、2～4份缓凝剂、3～7份降失水剂、0.1～1份消泡剂。本发明的水泥浆通过向水泥浆中加入新型弹韧性材料，让水泥石具有高强度、低弹模、低渗透等特点，改善水泥环受到冲击时的应力变形，以满足页岩油气井现场应用的要求。
High-temperature-resistant elastic and tough cement paste system for shale oil-gas well
一种页岩油气井耐高温弹韧性水泥浆体系
FU TIESONG (Autor:in) / LI ZAOYUAN (Autor:in) / HUANG SHENG (Autor:in) / XUE YUANTAO (Autor:in)
25.05.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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