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Well cementation cement paste
The invention relates to well cementation cement paste, and belongs to the technical field of petroleum and natural gas well cementation. The well cementation cement paste is prepared from the following components in parts by weight: 115-135 parts of oil well cement, 2-15 parts of EVA, 3-20 parts of vermiculite, 3.5-25 parts of perlite, 3-10 parts of micro-silicon, 0.2-0.5 part of fiber, 1-1.5 parts of fluid loss agent, 0.3-1.2 parts of dispersing agent and 65-115 parts of water. The well cementation cement paste has low density and good plasticity, the density of the well cementation cement paste is adjustable within the range of 1.45-1.55 g/cm < 3 >, the toughness and the impact resistance of a cement sheath can be enhanced by adding EVA, vermiculite and fibers, and the well cementationquality of a low-pressure leaky stratum is improved. The well cementation cement paste is easily available in raw materials, low in cost, simple and easy to operate during mixing and stirring in fieldconstruction, free of flash setting and free of pump suffocation.
本发明涉及一种固井水泥浆，属于石油与天然气固井技术领域。本发明提供了一种固井水泥浆，包括以下重量份的组分：油井水泥115‑135份、EVA 2‑15份、蛭石3‑20份、珍珠岩3.5‑25份、微硅3‑10份、纤维0.2‑0.5份、降失水剂1‑1.5份、分散剂0.3‑1.2份和水65‑115份。本发明的固井水泥浆具有较低的密度和良好的塑性，该固井水泥浆的密度在1.45‑1.55g/cm3范围内可调，EVA、蛭石和纤维的加入使得固井水泥浆可增强水泥环的韧性和抗冲击能力，提高低压易漏地层的固井质量。该固井水泥浆的原料易得、成本低，现场施工混拌时，简单易操作，不闪凝，不憋泵。
Well cementation cement paste
The invention relates to well cementation cement paste, and belongs to the technical field of petroleum and natural gas well cementation. The well cementation cement paste is prepared from the following components in parts by weight: 115-135 parts of oil well cement, 2-15 parts of EVA, 3-20 parts of vermiculite, 3.5-25 parts of perlite, 3-10 parts of micro-silicon, 0.2-0.5 part of fiber, 1-1.5 parts of fluid loss agent, 0.3-1.2 parts of dispersing agent and 65-115 parts of water. The well cementation cement paste has low density and good plasticity, the density of the well cementation cement paste is adjustable within the range of 1.45-1.55 g/cm < 3 >, the toughness and the impact resistance of a cement sheath can be enhanced by adding EVA, vermiculite and fibers, and the well cementationquality of a low-pressure leaky stratum is improved. The well cementation cement paste is easily available in raw materials, low in cost, simple and easy to operate during mixing and stirring in fieldconstruction, free of flash setting and free of pump suffocation.
本发明涉及一种固井水泥浆，属于石油与天然气固井技术领域。本发明提供了一种固井水泥浆，包括以下重量份的组分：油井水泥115‑135份、EVA 2‑15份、蛭石3‑20份、珍珠岩3.5‑25份、微硅3‑10份、纤维0.2‑0.5份、降失水剂1‑1.5份、分散剂0.3‑1.2份和水65‑115份。本发明的固井水泥浆具有较低的密度和良好的塑性，该固井水泥浆的密度在1.45‑1.55g/cm3范围内可调，EVA、蛭石和纤维的加入使得固井水泥浆可增强水泥环的韧性和抗冲击能力，提高低压易漏地层的固井质量。该固井水泥浆的原料易得、成本低，现场施工混拌时，简单易操作，不闪凝，不憋泵。
Well cementation cement paste
固井水泥浆
WANG XIANG (author) / CHEN XIAOHUA (author) / ZHANG HUI (author) / WANG CHENGWEN (author) / WANG XINGXING (author) / NIU SICHENG (author) / WANG QIANWEI (author)
2020-12-01
Patent
Electronic Resource
Chinese
| European Patent Office | 2023
| European Patent Office | 2024
| European Patent Office | 2020