Paсker Sealing–Wellbore Interaction	in Hydraulic Fracturing in Coal Seams

Klishin, S. V.; Клишин, В. И.

doi:10.1134/s1062739120046848

Cited by 6 publications

(1 citation statement)

References 31 publications

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“…Capsulesealing devices are simple and easy to operate. The common feature of the packer-sealing method is that the packer can be used many times [5,6]. Mechanical sealing has the following problems: the structure is complex, the equipment precision requirements are high, and troubleshooting is inconvenient.…”

Section: Introductionmentioning

confidence: 99%

Research and Development of Anti-High-Pressure Sealing Material and Its Bonding Performance

Hao

et al. 2023

Processes

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To solve the problem of the field application of downhole hydraulic fracturing technology due to the difficulty in sealing holes, this study analyzes the influence of special cement, expansion agents, stabilizers, and fiber material on basic properties, such as the setting time, fluidity, and compressive strength of high-pressure sealing materials through systematic tests based on a summary of conventional sealing materials. It was determined that with 20–30% special cement and 4% expansion agent added, and a fiber material length of 8 mm and volume of 1%, the high-pressure sealing material had high fluidity and a large expansion rate, demonstrating early strength. The bond performance of the high-pressure sealing material was tested through the variable-angle shear test. The relationship between the fractal dimension of the coal-rock mass around the borehole and the bond performance of the high-pressure sealing material was also explored.

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Section: Introductionmentioning

confidence: 99%