Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Well cementing cement paste suitable for coal bed methane and preparation method thereof
The invention provides well cementing cement paste suitable for coal bed methane. Compared with the prior art, a multi-size-fraction leaking stoppage material, an active filler and a resin material are added into the cement paste to form a leaking stoppage type cement paste system, in the multi-size-fraction leaking stoppage material, the first-stage particle leaking stoppage material serves as asupporting material, and the bridging effect can be achieved to support cracks; gaps are filled with a second-stage particle leaking stoppage material, cement particles and the like to form a leakingstoppage frame, and a hydrophilic fiber leaking stoppage material can form a fiber grid structure in a crack, so that the stability of a cement paste leaking stoppage structure is improved; a resin cementing material is used for further enhancing the mutual cementing among the crack surface, the leaking stoppage material and the cement; therefore, the compactness of the leaking stoppage structureis improved through multistage filling of the bridges, the elasticity, the nano materials and the cement particles, and meanwhile, the addition amounts of the modified multi-size-fraction leaking stoppage material, the active filler and the resin material are adjusted, so that the combined action of the modified multi-size-fraction leaking stoppage material, the active filler and the resin material has a remarkable synergistic effect on the leaking stoppage performance of the cement paste.
本发明提供了一种适用于煤层气的固井水泥浆。与现有技术相比，本发明通过在水泥浆中加入多粒级堵漏材料、活性填料、树脂材料形成堵漏型水泥浆体系，其中多粒级堵漏材料中，第一级颗粒堵漏材料作为支撑材料，可以起到架桥作用支撑裂缝，第二级颗粒堵漏材料和水泥颗粒等填充空隙，形成封堵框架，亲水纤维类堵漏材料可在裂缝中纤维网架结构，提高水泥浆封堵结构稳定性；再利用树脂胶结材料进一步增强裂缝表面与封堵材料、水泥相互间胶结；从而使本发明提供的固井水泥浆通过架桥、弹性、纳米材料和水泥颗粒多级填充，提高封堵结构致密性，同时调节改性多粒级堵漏材料、活性填料、树脂材料三者加量，使三者共同作用对水泥浆封堵性能产生显著增效作用。
Well cementing cement paste suitable for coal bed methane and preparation method thereof
The invention provides well cementing cement paste suitable for coal bed methane. Compared with the prior art, a multi-size-fraction leaking stoppage material, an active filler and a resin material are added into the cement paste to form a leaking stoppage type cement paste system, in the multi-size-fraction leaking stoppage material, the first-stage particle leaking stoppage material serves as asupporting material, and the bridging effect can be achieved to support cracks; gaps are filled with a second-stage particle leaking stoppage material, cement particles and the like to form a leakingstoppage frame, and a hydrophilic fiber leaking stoppage material can form a fiber grid structure in a crack, so that the stability of a cement paste leaking stoppage structure is improved; a resin cementing material is used for further enhancing the mutual cementing among the crack surface, the leaking stoppage material and the cement; therefore, the compactness of the leaking stoppage structureis improved through multistage filling of the bridges, the elasticity, the nano materials and the cement particles, and meanwhile, the addition amounts of the modified multi-size-fraction leaking stoppage material, the active filler and the resin material are adjusted, so that the combined action of the modified multi-size-fraction leaking stoppage material, the active filler and the resin material has a remarkable synergistic effect on the leaking stoppage performance of the cement paste.
本发明提供了一种适用于煤层气的固井水泥浆。与现有技术相比，本发明通过在水泥浆中加入多粒级堵漏材料、活性填料、树脂材料形成堵漏型水泥浆体系，其中多粒级堵漏材料中，第一级颗粒堵漏材料作为支撑材料，可以起到架桥作用支撑裂缝，第二级颗粒堵漏材料和水泥颗粒等填充空隙，形成封堵框架，亲水纤维类堵漏材料可在裂缝中纤维网架结构，提高水泥浆封堵结构稳定性；再利用树脂胶结材料进一步增强裂缝表面与封堵材料、水泥相互间胶结；从而使本发明提供的固井水泥浆通过架桥、弹性、纳米材料和水泥颗粒多级填充，提高封堵结构致密性，同时调节改性多粒级堵漏材料、活性填料、树脂材料三者加量，使三者共同作用对水泥浆封堵性能产生显著增效作用。
Well cementing cement paste suitable for coal bed methane and preparation method thereof
一种适用于煤层气的固井水泥浆及其制备方法
MA TENGFEI (Autor:in) / SUN HANSEN (Autor:in) / MI HONGGANG (Autor:in) / WU PENG (Autor:in) / CHENG LU (Autor:in) / CAI LONG (Autor:in) / MA HONGTAO (Autor:in) / WANG DEGUI (Autor:in) / GAO JIXIAN (Autor:in) / WANG CHENGWEN (Autor:in)
09.03.2021
Patent
Elektronische Ressource
Chinesisch
Cement paste for cementing low-temperature well and preparation method of cement paste
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