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Vol 241
Pages:
83-90
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RUS ENG
Research article
Oil and gas

The relationship of fracture toughness coefficients and geophysical characteristics of rocks of hydrocarbon deposits

Authors:
Yu. A. Kashnikov1
S. G. Ashikhmin2
A. E. Kukhtinskii3
D. V. Shustov4
About authors
  • 1 — Perm national research polytechnic university
  • 2 — Perm national research polytechnic university
  • 3 — Perm national research polytechnic university
  • 4 — Perm national research polytechnic university
Date submitted:
2019-01-31
Date accepted:
2022-12-02
Date published:
2020-02-25

Abstract

This paper contains the results of laboratory tests to determine the fracture toughness coefficient K IC of rocks for terrigenous and carbonate objects by three methods. The tests were carried out by different methods due to the lack of a standard method for determining the fracture toughness characteristics of rocks in Russia. We used the following methods for determining the K IC coefficient: the extension of core specimens with an annular fracture, the action of a concentrated load on a beam specimen with a fracture and the method of bending semi-circular samples with a fracture according to ISRM recommendations. The paper presents the relationship of the fracture toughness coefficients with the P-wave velocity and porosity. The obtained dependencies characterize the general trend of changing for the studied parameter and can be used in the design of hydraulic fracturing in the fields for which tests were conducted.

Keywords:
fracture toughness coefficient extension bending terrigenous and carbonate objects rocks
10.31897/pmi.2020.1.83
Go to volume 241

References

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The relationship of fracture toughness coefficients and geophysical characteristics of rocks of hydrocarbon deposits

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