Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-temperature-resistant elastic and tough anti-channeling cement slurry system and preparation method thereof
The invention discloses a high-temperature-resistant elastic and tough anti-channeling cement slurry system which comprises the following components in parts by weight: 100 parts of oil well cement; 30 to 40 parts of silica sand; 3-8 parts of polytetrafluoroethylene powder; 0.3 to 0.7 part of mixed fiber; 1-3 parts of nano liquid silicon; 0.2 to 1 part of a defoaming agent; 4-10 parts of a fluid loss agent; 0-3 parts of a drag reducer; 0.5 to 4 parts of a retarder; and 44 to 50 parts of water. The system has good elasticity and toughness under the condition of 150 DEG C/10 MPa, and meanwhile, can maintain relatively high compressive strength. The system can improve the elasticity and toughness of well cementation cement stone under the conditions of high temperature and high pressure, prevent the cement stone from brittle failure under the action of high pressure and high stress, ensure the structural integrity of the cement stone ring, improve the high-temperature and high-pressure well cementation quality of the ultra-deep well, realize the long-acting packing performance of the high-temperature and high-pressure cement stone ring of the ultra-deep well, and shaft safety of a high-temperature and high-pressure ultra-deep oil-gas well is ensured.
一种抗高温弹韧性防窜水泥浆体系，按重量份计包括以下组分：油井水泥100份；硅砂30～40份；聚四氟乙烯粉末3～8份；混合纤维0.3～0.7份；纳米液硅1～3份；消泡剂0.2～1份；降失水剂4～10份；减阻剂0～3份；缓凝剂0.5～4份；水44～50份。该体系在150℃/10MPa的条件下，具有良好的弹韧性，同时能维持较高的抗压强度。该体系能改善高温高压条件下固井水泥石的弹韧性，防止水泥石在高压下、高应力作用下发生脆性破坏，保证水泥石环结构完整性，提高超深井高温高压固井质量，实现超深井高温高压水泥石环的长效封隔性能，保障高温高压超深油气井的井筒安全。
High-temperature-resistant elastic and tough anti-channeling cement slurry system and preparation method thereof
The invention discloses a high-temperature-resistant elastic and tough anti-channeling cement slurry system which comprises the following components in parts by weight: 100 parts of oil well cement; 30 to 40 parts of silica sand; 3-8 parts of polytetrafluoroethylene powder; 0.3 to 0.7 part of mixed fiber; 1-3 parts of nano liquid silicon; 0.2 to 1 part of a defoaming agent; 4-10 parts of a fluid loss agent; 0-3 parts of a drag reducer; 0.5 to 4 parts of a retarder; and 44 to 50 parts of water. The system has good elasticity and toughness under the condition of 150 DEG C/10 MPa, and meanwhile, can maintain relatively high compressive strength. The system can improve the elasticity and toughness of well cementation cement stone under the conditions of high temperature and high pressure, prevent the cement stone from brittle failure under the action of high pressure and high stress, ensure the structural integrity of the cement stone ring, improve the high-temperature and high-pressure well cementation quality of the ultra-deep well, realize the long-acting packing performance of the high-temperature and high-pressure cement stone ring of the ultra-deep well, and shaft safety of a high-temperature and high-pressure ultra-deep oil-gas well is ensured.
一种抗高温弹韧性防窜水泥浆体系，按重量份计包括以下组分：油井水泥100份；硅砂30～40份；聚四氟乙烯粉末3～8份；混合纤维0.3～0.7份；纳米液硅1～3份；消泡剂0.2～1份；降失水剂4～10份；减阻剂0～3份；缓凝剂0.5～4份；水44～50份。该体系在150℃/10MPa的条件下，具有良好的弹韧性，同时能维持较高的抗压强度。该体系能改善高温高压条件下固井水泥石的弹韧性，防止水泥石在高压下、高应力作用下发生脆性破坏，保证水泥石环结构完整性，提高超深井高温高压固井质量，实现超深井高温高压水泥石环的长效封隔性能，保障高温高压超深油气井的井筒安全。
High-temperature-resistant elastic and tough anti-channeling cement slurry system and preparation method thereof
一种抗高温弹韧性防窜水泥浆体系及其制备方法
LI FEI (Autor:in) / YI HAO (Autor:in) / LU FEIFEI (Autor:in) / HE YINGZHUANG (Autor:in) / ZHANG JUN (Autor:in) / LI SHUANGGUI (Autor:in) / LIU XIAOMIN (Autor:in) / LUO FAQIANG (Autor:in) / JIA XIAOBIN (Autor:in) / FAN YANFANG (Autor:in)
18.06.2021
Patent
Elektronische Ressource
Chinesisch
| Europäisches Patentamt | 2021
Micro-thixotropic anti-channeling cement slurry system
| Europäisches Patentamt | 2024
Anti-corrosion tough anti-gas-channeling cement paste as well as preparation and application thereof
| Europäisches Patentamt | 2024
Nanometer anti-channeling agent and preparation method thereof, and anti-channeling cement paste
| Europäisches Patentamt | 2020