Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Single-stage well cementation anti-upside-down high-temperature large-temperature-difference cement paste system
The invention provides a single-stage well cementation anti-upside-down high-temperature large-temperature-difference cement paste system. The concrete is prepared from the following components in parts by weight: 100 parts of cement, 0-20 parts of superfine cement, 40-45 parts of silicon powder, 0-100 parts of a weighting agent, 0-15 parts of micro silicon, 0-4 parts of an anti-channeling agent, 0-0.5 part of a separant, 0-3 parts of an elastic-plastic agent, 6-8 parts of an anti-upside-down reinforcing agent, 6-8 parts of a high slow fluid loss agent, 2-3 parts of a drag reducer, 0.5-2 parts of a retarder, 1 part of a defoaming agent, 1 part of a separant, 2-3 parts of an expanding agent and 60-90 parts of water. The technical problems that in the prior art, the strength of the top of cement paste returned to the ground in a temperature-crossing area of a polymer cement paste system cannot meet the well cementation requirement of an ultra-deep and long cementation section, and the strength of top cement stone is slowly developed or does not have strength under the high temperature and large temperature difference can be effectively solved.
本发明提供了一种单级固井防倒挂高温大温差水泥浆体系，由如下重量份的各组分组成：水泥100份、超细水泥0‑20份、硅粉40‑45份、加重剂0‑100份、微硅0‑15份、防窜剂0‑4份、隔离剂0‑0.5份、弹塑剂0‑3份、防倒挂增强剂6‑8份、高缓降失水剂6‑8份、减阻剂2‑3份、缓凝剂0.5‑2份、消泡剂1份、隔离剂1份、膨胀剂2‑3份，水60‑90份。本发明能够有效的解决现有技术中聚合物水泥浆体系跨温区返至地面水泥浆顶部强度满足不了超深长封固段固井要求，高温大温差下顶部水泥石强度发展慢或无强度的技术问题。
Single-stage well cementation anti-upside-down high-temperature large-temperature-difference cement paste system
The invention provides a single-stage well cementation anti-upside-down high-temperature large-temperature-difference cement paste system. The concrete is prepared from the following components in parts by weight: 100 parts of cement, 0-20 parts of superfine cement, 40-45 parts of silicon powder, 0-100 parts of a weighting agent, 0-15 parts of micro silicon, 0-4 parts of an anti-channeling agent, 0-0.5 part of a separant, 0-3 parts of an elastic-plastic agent, 6-8 parts of an anti-upside-down reinforcing agent, 6-8 parts of a high slow fluid loss agent, 2-3 parts of a drag reducer, 0.5-2 parts of a retarder, 1 part of a defoaming agent, 1 part of a separant, 2-3 parts of an expanding agent and 60-90 parts of water. The technical problems that in the prior art, the strength of the top of cement paste returned to the ground in a temperature-crossing area of a polymer cement paste system cannot meet the well cementation requirement of an ultra-deep and long cementation section, and the strength of top cement stone is slowly developed or does not have strength under the high temperature and large temperature difference can be effectively solved.
本发明提供了一种单级固井防倒挂高温大温差水泥浆体系，由如下重量份的各组分组成：水泥100份、超细水泥0‑20份、硅粉40‑45份、加重剂0‑100份、微硅0‑15份、防窜剂0‑4份、隔离剂0‑0.5份、弹塑剂0‑3份、防倒挂增强剂6‑8份、高缓降失水剂6‑8份、减阻剂2‑3份、缓凝剂0.5‑2份、消泡剂1份、隔离剂1份、膨胀剂2‑3份，水60‑90份。本发明能够有效的解决现有技术中聚合物水泥浆体系跨温区返至地面水泥浆顶部强度满足不了超深长封固段固井要求，高温大温差下顶部水泥石强度发展慢或无强度的技术问题。
Single-stage well cementation anti-upside-down high-temperature large-temperature-difference cement paste system
一种单级固井防倒挂高温大温差水泥浆体系
WANG YONGHONG (Autor:in) / PAN JUN (Autor:in) / LI PU (Autor:in) / LUO QING (Autor:in) / XU MINGXIN (Autor:in) / HOU JINSAN (Autor:in) / ZOU KAI (Autor:in) / LI YONG (Autor:in) / DONG MINGWEI (Autor:in) / LIU XIN (Autor:in)
06.09.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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