Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Cement paste, application and well cementation method
The invention relates to the field of oil and gas well engineering, and discloses cement paste, application and a well cementation method.The cement paste comprises cement, fine aggregate, an active reinforcing material, a water reducing agent, a shear reinforcing material, an early strength agent, a coagulation accelerator and water; relative to 100 parts by weight of the cement, the content of the fine aggregate is 10 to 80 parts by weight, the content of the active reinforcing material is 3 to 20 parts by weight, the content of the water reducing agent is 1 to 3 parts by weight, the content of the shear reinforcing material is 2 to 10 parts by weight, the content of the early strength agent is 0.5 to 3 parts by weight, the content of the coagulation accelerator is 0.0001 to 0.0004 part by weight and the content of the water is 22 to 50 parts by weight; wherein the shear reinforcing material is a fiber material. The cement paste is cured for 24-96 hours under the condition of 15-50 DEG C, the shear strength of the obtained set cement is 8-15 MPa, the compressive strength is 50-80 MPa, and a formed cement sheath has high shear resistance and high compressive strength and meets the construction requirements of a shallow surface layer non-metal casing pipe well cementation technology in an oil and gas well.
本发明涉及油气井工程领域，公开了一种水泥浆及应用和固井的方法，所述水泥浆包括：水泥、细骨料、活性增强材料、减水剂、剪切增强材料、早强剂、促凝剂和水；相对于100重量份的所述水泥，所述细骨料为10‑80重量份、所述活性增强材料为3‑20重量份、所述减水剂为1‑3重量份、所述剪切增强材料为2‑10重量份、所述早强剂为0.5‑3重量份、所述促凝剂为0.0001‑0.0004重量份和水为22‑50重量份；其中，所述剪切增强材料为纤维材料。该水泥浆在15‑50℃条件下固化24‑96h，所得水泥石的抗剪切强度为8‑15MPa，抗压强度为50‑80MPa，形成的水泥环兼具高抗剪切性和高抗压强度，满足油气井中浅表层非金属套管固井技术的施工要求。
Cement paste, application and well cementation method
The invention relates to the field of oil and gas well engineering, and discloses cement paste, application and a well cementation method.The cement paste comprises cement, fine aggregate, an active reinforcing material, a water reducing agent, a shear reinforcing material, an early strength agent, a coagulation accelerator and water; relative to 100 parts by weight of the cement, the content of the fine aggregate is 10 to 80 parts by weight, the content of the active reinforcing material is 3 to 20 parts by weight, the content of the water reducing agent is 1 to 3 parts by weight, the content of the shear reinforcing material is 2 to 10 parts by weight, the content of the early strength agent is 0.5 to 3 parts by weight, the content of the coagulation accelerator is 0.0001 to 0.0004 part by weight and the content of the water is 22 to 50 parts by weight; wherein the shear reinforcing material is a fiber material. The cement paste is cured for 24-96 hours under the condition of 15-50 DEG C, the shear strength of the obtained set cement is 8-15 MPa, the compressive strength is 50-80 MPa, and a formed cement sheath has high shear resistance and high compressive strength and meets the construction requirements of a shallow surface layer non-metal casing pipe well cementation technology in an oil and gas well.
本发明涉及油气井工程领域，公开了一种水泥浆及应用和固井的方法，所述水泥浆包括：水泥、细骨料、活性增强材料、减水剂、剪切增强材料、早强剂、促凝剂和水；相对于100重量份的所述水泥，所述细骨料为10‑80重量份、所述活性增强材料为3‑20重量份、所述减水剂为1‑3重量份、所述剪切增强材料为2‑10重量份、所述早强剂为0.5‑3重量份、所述促凝剂为0.0001‑0.0004重量份和水为22‑50重量份；其中，所述剪切增强材料为纤维材料。该水泥浆在15‑50℃条件下固化24‑96h，所得水泥石的抗剪切强度为8‑15MPa，抗压强度为50‑80MPa，形成的水泥环兼具高抗剪切性和高抗压强度，满足油气井中浅表层非金属套管固井技术的施工要求。
Cement paste, application and well cementation method
水泥浆及应用和固井的方法
LIU RENGGUANG (Autor:in) / LU PEIQING (Autor:in) / LI XIAOJIANG (Autor:in) / WANG MU (Autor:in) / LI PENGCHENG (Autor:in) / DU JINLONG (Autor:in)
05.07.2024
Patent
Elektronische Ressource
Chinesisch
Cement paste, application and well cementation method
| Europäisches Patentamt | 2024
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