A method for predicting shale fracturing brittleness index during shale hydraulic fracturing
A technology of brittleness index and hydraulic fracturing, which is applied in the direction of applying stable tension/pressure to test material strength, measuring device, strength characteristics, etc., and can solve the problem that the accurate and effective brittleness index cannot be calculated in different regions
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[0086] The method for predicting the shale fracturing brittleness index of the present invention is applied to the test of specific shale samples, and the specific steps are as follows:
[0087] (1) Take 42 cores of Yongye 2 well for rock mineral analysis, numbered 1-42, and use X-ray diffractometer to measure the component content of various minerals. The specific data are shown in Table 1.
[0088] Table 1 The percentage of shale minerals
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[0092] (2) The corresponding Young's modulus and Poisson's ratio of the 42 cores were measured by the triaxial rock mechanics test system. The specific data are shown in Table 2.
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