Experimental method for fracture reorientation rule in oriented perforating and fracturing process
An experimental method and directional perforation technology, applied in the field of hydraulic fracturing, can solve the problems of large differences and affect the reliability of the test, and achieve the effect of high test reliability and accurate and reliable test results
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[0032] The present invention proposes an experimental method for directional perforation and fracture steering research, and the experimental method includes:
[0033] A core outcropping cube with a side length greater than or equal to 1m is used as the test piece and the test piece is made. Then, under the condition of three-axis (three mutually perpendicular axes or three directions) stress loading, directional perforation and fracturing are carried out successively, and then Analyze the test piece and study the relationship between the perforation direction and the crack orientation. The core outcrops are collected from the mine, and cut into cubes after mining, to trim the surface and control the surface accuracy. The core outcrop cube is greater than or equal to 1m mainly considering the radius and distance of fracturing fracture turning. Generally, the radius and distance of fracturing fracture turning are more than 0.5 meters. If the specimen ...
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