Shale compressibility evaluation method
A technology for shale and natural fractures, applied in the field of calculating shale compressibility index, can solve problems such as not considering the influence of natural fractures, and achieve the effect of improving the effect
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[0022] Below the implementation method of the present invention is described in further detail, specifically as follows:
[0023] Taking a well in Fuling as an example, the buried depth of the reservoir is 3908-3945m, and the shale compressibility index is calculated by the method of the present invention.
[0024] 1. According to step 1, prepare the maximum horizontal principal stress, the minimum horizontal principal stress, the angle between the hydraulic fracture surface and the natural fracture surface of the fracturing interval, and the stimulation volume measured by microseismic.
[0025] 2. Use the maximum horizontal principal stress, the minimum horizontal principal stress and the angle between the hydraulic fracture surface and the natural fracture surface to calculate the influencing factors for the opening of each natural fracture, as shown in Table 1.
[0026] 3. Use steps 3 and 4 to get the number of cracks, and the number of cracks is shown in Attached Table 2. ...
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