The Gas from Deflagration Fracture to Crack the Cement Test Sample Experiment

doi:10.11885/j.issn.1674-5086.2019.11.07.01

Abstract

Abstract: In order to get better rock breaking effect, plugging removal effect and fracture forms, cement sample fracture experiment has been done, 9 cement samples by using ϕ244.5 mm casing with reserved perforation holes and ϕ1 600×1 000 mm external diameter. The ground experiment has taken common aerospace composite solid propellant and military dual-base powder. On the basis of experiments, a comparison between intra-layer explosion technology and repeated strong electric shock wave technology. The result shows that the gas from deflagration fracture can make fractures to all 9 samples with 2～4 fractures in centimeter level, and upper fracture width is more than middle part. The peak pressure, the number of fracture decrease and fracture width decreases by less powder. Its fracture mechanism and forms are different from these two above.

Key words: deflagration fracturing, cement test sample, cracking, fracture generation mechanism, experiment

CLC Number:

TE357

SUN Lin, HUANG Bo, YI Fei, ZHANG Jie. The Gas from Deflagration Fracture to Crack the Cement Test Sample Experiment[J]. 西南石油大学学报(自然科学版), 2020, 42(5): 99-106.

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URL: http://journal15.magtechjournal.com/Jwk_xnzk/EN/10.11885/j.issn.1674-5086.2019.11.07.01

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