Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-density plugging cement paste and preparation method thereof
The invention relates to the technical field of cement paste preparation, in particular to high-density leaking stoppage cement paste and a preparation method thereof.The high-density leaking stoppage cement paste is prepared from G-grade oil well cement, a leaking stoppage agent, calcium carbonate, a fluid loss agent, a dispersing agent, a retarder, silica fume, quartz sand, a weighting agent and water according to the following method. Mixing the plugging agent, the calcium carbonate, the fluid loss agent, the dispersing agent, the retarder, the silica fume, the quartz sand and the weighting agent according to the required amount to obtain a mixed material; and then adding the mixed material and the required amount of water into the required amount of G-grade oil well cement, and uniformly stirring to obtain the cement. The high-density leaking stoppage cement paste is good in rheological property, has the advantages of being good in adaptability to a crack channel and good in water loss reduction, leakage prevention and pressure bearing effects, is suitable for well cementation construction of a high-temperature well with the circulating temperature of 120-150 DEG C, and can effectively solve the problem that the leakage risk of the high-density well cementation cement paste in a fractured stratum is serious.
本发明涉及水泥浆制备技术领域，是一种高密度堵漏水泥浆及其制备方法，前者原料包括G级油井水泥、堵漏剂、碳酸钙、降失水剂、分散剂、缓凝剂、微硅粉、石英砂、加重剂和水，按下述方法得到：首先,将所需量的堵漏剂、碳酸钙、降失水剂、分散剂、缓凝剂、微硅粉、石英砂和加重剂混合，得到混合物料；然后,向所需量的G级油井水泥中加入混合物料和所需量的水搅拌均匀后得到。本发明高密度堵漏水泥浆流变性能好，具有对裂缝通道适应性好、降失水、防漏和承压效果好的优点，适用于循环温度为120℃至150℃的高温井的固井施工，能有效应对高密度固井水泥浆在裂缝性地层中漏失风险严重的问题。
High-density plugging cement paste and preparation method thereof
The invention relates to the technical field of cement paste preparation, in particular to high-density leaking stoppage cement paste and a preparation method thereof.The high-density leaking stoppage cement paste is prepared from G-grade oil well cement, a leaking stoppage agent, calcium carbonate, a fluid loss agent, a dispersing agent, a retarder, silica fume, quartz sand, a weighting agent and water according to the following method. Mixing the plugging agent, the calcium carbonate, the fluid loss agent, the dispersing agent, the retarder, the silica fume, the quartz sand and the weighting agent according to the required amount to obtain a mixed material; and then adding the mixed material and the required amount of water into the required amount of G-grade oil well cement, and uniformly stirring to obtain the cement. The high-density leaking stoppage cement paste is good in rheological property, has the advantages of being good in adaptability to a crack channel and good in water loss reduction, leakage prevention and pressure bearing effects, is suitable for well cementation construction of a high-temperature well with the circulating temperature of 120-150 DEG C, and can effectively solve the problem that the leakage risk of the high-density well cementation cement paste in a fractured stratum is serious.
本发明涉及水泥浆制备技术领域，是一种高密度堵漏水泥浆及其制备方法，前者原料包括G级油井水泥、堵漏剂、碳酸钙、降失水剂、分散剂、缓凝剂、微硅粉、石英砂、加重剂和水，按下述方法得到：首先,将所需量的堵漏剂、碳酸钙、降失水剂、分散剂、缓凝剂、微硅粉、石英砂和加重剂混合，得到混合物料；然后,向所需量的G级油井水泥中加入混合物料和所需量的水搅拌均匀后得到。本发明高密度堵漏水泥浆流变性能好，具有对裂缝通道适应性好、降失水、防漏和承压效果好的优点，适用于循环温度为120℃至150℃的高温井的固井施工，能有效应对高密度固井水泥浆在裂缝性地层中漏失风险严重的问题。
High-density plugging cement paste and preparation method thereof
高密度堵漏水泥浆及其制备方法
YANG JIXIANG (Autor:in) / XU MIAO (Autor:in) / GU LONGHUI (Autor:in) / JIANG PING (Autor:in) / YIN HONGLIANG (Autor:in) / WANG RUNYU (Autor:in) / YAN ZHI (Autor:in) / LIU XU (Autor:in) / LI BO (Autor:in) / LUO CHENG (Autor:in)
14.01.2025
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
/
C08F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
C09K
Materialien für Anwendungen, soweit nicht anderweitig vorgesehen
,
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR
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