Hydraulic fracturing stress detection device and detection system

Abstract

The invention provides a hydraulic fracturing stress detection device and detection system. The detection device comprises a body rod and a fracturing sealing component; the fracturing sealing component comprises two sealing ring sets, the two sealing ring sets are arranged outside the body rod in a sleeving mode at intervals and matched with the body rod to form a fracturing sealing part, and when the body rod stretches into a drill hole, the fracturing sealing part can be matched with the inner wall of the drill hole in a sealed mode to form a fracturing sealing cavity; and the body rod comprises a high-pressure water channel and a connector end used for being connected with a drill rod, one port of the high-pressure water channel is formed in the end face of the connector end, and the other port of the high-pressure water channel is formed in the outer surface of the body rod in the fracturing sealing part. The detection device is simple in structure and convenient and simple in detection operation, and can effectively improve the measurement efficiency.

Description

technical field [0001] The present application relates to the technical field of geotechnical engineering, in particular, to a hydraulic fracturing stress detection device and a detection system. Background technique [0002] Hydraulic fracturing is an advanced method that can directly measure deep hole stress in the world. The method of hydraulic fracturing stress measurement is: to isolate a section of borehole at a selected measurement depth, and then pressurize and fracture the test section (commonly called fracturing section) by pumping fluid, and record the pressure with a computer digital acquisition system at the same time. changes over time. The characteristic pressure parameters are obtained by analyzing the measured record curves, and then according to the corresponding theoretical calculation formulas, die direction data and images, the magnitude and direction of the maximum and minimum horizontal principal stress at the measuring point can be obtained. [0003...

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Problems solved by technology

[0004] It can be seen from the above that the existing straddle packer has a relatively complex structure and a large volume. At present, this straddle packer is more suitable for measuring in vertical boreholes and carrying out hydraulic pressure sensing in horizontal boreholes. crack stress measurement, this kind of bridge packer can only rely on the power of the drilling rig to push and pull, and the downhole installation will be very difficult due to factors such as hole wall friction, and considering the small space in underground engineering caverns, this method will seriously Restricting the measurement depth and measurement efficiency of hydraulic fracturing stress in horizontal drilling

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