An experimental device for measuring the frictional properties of shale using cuttings
A technology of friction characteristics and experimental equipment, applied in the direction of measuring equipment, mechanical equipment, instruments, etc., to achieve the effect of flexible sample shape and specification requirements, simple operation, and simple equipment
Inactive Publication Date: 2018-12-21
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology
At present, there is no evaluation device and evaluation method that can realize this function at home and abroad. It is necessary to design a set of such devices in order to explore the shear slip conditions of shale reservoirs and provide a theoretical basis for the application of reservoir reconstruction engineering.
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Embodiment 1
[0014] An experimental device for measuring the friction characteristics of shale using cuttings, its structure includes: figure 1 Parts 1 to 20 shown in . It is characterized in that the vibration isolation table 18 provides a stable measurement platform for the entire upper device, and the truss 11 on it is the supporting member of the entire system. On the limit table 15, the fixed template is fixedly connected with the limit table, the pressure loading template is not connected with the limit plate, the pressure loading curved rod 3 is connected with the pressure sensor 5 through the screw hole 4 on the truss, and the pressure sensor 5 is connected with the stress loading The template 6 is connected, the pressure loading template 6 and the fixed template 9 are clamped by the cuttings 22 embedded in the epoxy resin 23 in the sample tank 10 to clamp the intermediate template 8 to provide positive pressure for the shearing activity of the sample in the sample tank 10, and are...
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The invention discloses an experiment apparatus utilizing rock debris to measure the friction characteristics of shale. A pressure loading rod is connected to a pressure loading template through a screw hole in a truss; the pressure loading template and a fixing template clamp a middle template through rock debris, which is in a sample groove and is embedded into epoxy resin so as to positive pressure for shearing movement of a sample in the sample groove; a displacement sensor arranged on the truss is used to measure the displacement of the middle template; a soft steel rope is tied to the lower end of the middle template; the soft steel rope goes through a spacing table rope hole, is winded around a manual screw wimble, and goes through a vibration isolation table rope hole, the terminal of the soft steel rope is tied to a counterweight; through rotating the screw wimble by hands, the middle template and counterweight can be pulled at the same time, a shearing force is applied on the middle template; a spring, which is fixed on the spacing table, is used to buffer the middle template during the gliding process; an electronic scale, which is right under the counterweight, can record the data of weight change of the counterweight; and data recorded by the electronic scale, displacement sensor, and pressure sensor is synchronously input into a computer through data transmission lines and stored in the computer.
Description
technical field [0001] The present invention relates to a technology for stimulation of shale gas reservoir fracture network, in particular to an experimental device for measuring the friction characteristics of shale by using cuttings. Background technique [0002] The efficient development of shale gas requires reservoir stimulation to form shale gas channels with conductivity to obtain industrial gas flow. Different from conventional oil and gas reservoirs, in order to obtain high production of shale gas, the natural fractures in the reservoir must be activated to the greatest extent and shear slip occurs, so as to realize the interconnection between natural fractures. The friction strength of the fracture surface of shale reservoirs is one of the controlling factors for the formation of shear-slip fracture networks in natural fractures. The hydraulic fracturing of the reservoir pumps a large amount of fracturing fluid, in addition to creating fractures for the local str...
Claims
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IPC IPC(8): G01N19/02
Inventor 葛洪魁闫伟王小琼王剑波刘庆孟范宝陈浩
Owner CHINA UNIV OF PETROLEUM (BEIJING)