Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Bentonite cement paste for leaking stoppage, leaking stoppage method and application
The invention discloses bentonite cement paste for leaking stoppage, the bentonite cement paste comprises cement raw stock, bentonite and first water, and the cement raw stock comprises 117-132% of cement, 2.5-3.5% of expanding agent, 1.5-2.5% of fluid loss agent, 1.5-2.5% of leaking stoppage fiber and 58-63% of second water based on the mass volume ratio of the total volume of the cement raw stock. The invention further discloses a cement paste leaking stoppage method. The method comprises the steps that the bentonite cement paste is adopted to plug a leaking position, and the bentonite cement paste is pushed and squeezed at pulse intervals. According to the method, well leakage, especially malignant leakage containing flowing formation water, can be effectively plugged, and plugging cost and operation time are greatly saved.
本发明公开了一种堵漏用膨润土水泥浆，其包括水泥原浆、膨润土和第一水，其中，基于与所述水泥原浆总体积的质量体积比计，所述水泥原浆包括水泥117‑132％、膨胀剂2.5‑3.5％、降失水剂1.5‑2.5％、堵漏纤维1.5‑2.5wt％和第二水58‑63％。本发明进而公开了一种水泥浆堵漏方法，其包括采用所述膨润土水泥浆对漏失处进行封堵并以脉冲间隔推挤所述膨润土水泥浆。本发明的方法可有效封堵井漏特别是含流动地层水的恶性漏失，大幅节约堵漏费用与作业时间。
Bentonite cement paste for leaking stoppage, leaking stoppage method and application
The invention discloses bentonite cement paste for leaking stoppage, the bentonite cement paste comprises cement raw stock, bentonite and first water, and the cement raw stock comprises 117-132% of cement, 2.5-3.5% of expanding agent, 1.5-2.5% of fluid loss agent, 1.5-2.5% of leaking stoppage fiber and 58-63% of second water based on the mass volume ratio of the total volume of the cement raw stock. The invention further discloses a cement paste leaking stoppage method. The method comprises the steps that the bentonite cement paste is adopted to plug a leaking position, and the bentonite cement paste is pushed and squeezed at pulse intervals. According to the method, well leakage, especially malignant leakage containing flowing formation water, can be effectively plugged, and plugging cost and operation time are greatly saved.
本发明公开了一种堵漏用膨润土水泥浆，其包括水泥原浆、膨润土和第一水，其中，基于与所述水泥原浆总体积的质量体积比计，所述水泥原浆包括水泥117‑132％、膨胀剂2.5‑3.5％、降失水剂1.5‑2.5％、堵漏纤维1.5‑2.5wt％和第二水58‑63％。本发明进而公开了一种水泥浆堵漏方法，其包括采用所述膨润土水泥浆对漏失处进行封堵并以脉冲间隔推挤所述膨润土水泥浆。本发明的方法可有效封堵井漏特别是含流动地层水的恶性漏失，大幅节约堵漏费用与作业时间。
Bentonite cement paste for leaking stoppage, leaking stoppage method and application
一种堵漏用膨润土水泥浆、堵漏方法及应用
ZHANG DONG-QING (Autor:in) / ZHANG HAIPING (Autor:in) / SUN FENG (Autor:in) / TAO XINGHUA (Autor:in) / SUO ZHONGWEI (Autor:in) / HU YANFENG (Autor:in) / LIU XIAODAN (Autor:in)
12.09.2023
Patent
Elektronische Ressource
Chinesisch
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