The Study of the Technology of Expansion Elastic Self-Sealing Cement Slurry and Its Application
Abstract: Fuling Jiaoshi Shale Gas Field was the first national shale gas demonstration area for commercial development. The geological structure of Fuling Shale Gas was special, where large volume frac-turing completion technology was widely used; the integrity of the cement sheath was easy to be damaged in fracturing. The wellhead pressure problem not only affected the operation at the late stage, but also increased the risk of completion. Therefore, the key for improving the sealing performance of the whole cement sheath and preventing gas channeling was the key to solve the problem of the shale wellhead pressure. By analyzing the reasons of cement sheath sealing failure, the design principle and method of elastic expansion self sealing cement slurry system are put forward, the experimental evaluation and field application show that the expansion and elastic self sealing cement slurry was obvious effect of sealing in the gas wells.
文章引用: 张国仿 , 王晓亮 (2017) 弹性膨胀自密封水泥浆技术研究与应用。 石油天然气学报， 39， 224-228. doi: 10.12677/JOGT.2017.394059
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