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Torsional impact rock-breaking experiment device and experiment method

A technology of experimental device and experimental method, which is applied in the direction of testing material hardness, using repetitive force/pulse force to test material strength, etc., can solve the problem of not being able to clearly understand the stick-slip effect, etc.

Inactive Publication Date: 2014-12-10
NORTHEAST GASOLINEEUM UNIV
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Problems solved by technology

[0004] The object of the present invention is to provide a torsional impact rock breaking experimental device and experimental method, which is used to solve the problem that the current drill bit test equipment cannot clearly understand the stick-slip effect

Method used

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  • Torsional impact rock-breaking experiment device and experiment method

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Such as figure 1 As shown, this torsional impact rock breaking experimental device includes a main frame, a main motor 1, a side motor 2, a drill pipe 12, a centering sleeve 10, a hydraulic cylinder 3, a cross slide 7, a four-jaw chuck 6, and a data acquisition system 15 , the computer 20, the control cabinet 8, the main frame is formed between the beam 11 and the base 4 through the two columns 13, the lifting platform is arranged between the two columns 13, the two ends of the lifting platform are provided with sliding sleeves, and the sliding sleeves are respectively placed on the corresponding On the column 13, the lifting platform is slidingly connected with the column 13, the cross slide 7 is arranged on the lifting platform, the four-jaw chuck 6 is installed on the cross slide 7, the rock sample 19 is fixed on the four-jaw chuck 6, and the cross slide 7 i...

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Abstract

The invention relates to a torsional impact rock-breaking experiment device and an experiment method. A main rack of the torsional impact rock-breaking experiment device is formed by arranging two vertical columns between a cross beam and a base; a lifting table is arranged between the two vertical columns and is connected with the vertical columns in a sliding manner; a crossed sliding table is arranged on the lifting table; a four-claw clamping disk is mounted on the crossed sliding table; a rock sample is fixed on the four-claw clamping disk; a displacement sensor is arranged between the lifting table and the cross beam; the upper end of a piston rod of a hydraulic oil cylinder is connected with a load sensor and presses the bottom of the crossed sliding table; the hydraulic oil cylinder is connected with a hydraulic pump; a main motor is connected with a torque rotating speed meter and a drilling rod respectively through a synchronization belt; a side motor is connected with an overrun clutch arranged on the drilling rod through a triangular belt; the displacement sensor, the load sensor and the torque rotating speed meter are respectively connected with a data acquisition system; the data acquisition system is connected with a computer; a control system is mounted in the computer. The torsional impact rock-breaking experiment device can research a rock-breaking effect under a torsional impact condition and analyze a stick-slip effect in an actual drilling process and a rock-breaking mechanical property and a breaking rule under a torsional impact load.

Description

technical field [0001] The invention relates to an experimental device mainly used in the fields of rock mechanics engineering, petroleum engineering, mining engineering and the like to perform torsional impact drilling and crushing of rocks with a micro-drill and measure related parameters, in particular to an experimental device and an experimental method for torsional impact rock breaking. Background technique [0002] In the petroleum industry, the PDC drill bit is the main rock-breaking tool for ultra-deep wells and hard formations. However, during the drilling process, stick-slip vibration will occur, that is, when the torque provided by the drill string to the drill bit is less than the shear limit of the rock on the working face, the drill bit stops rotating with the drill string and is in a viscous state; When the torque is greater than the shear limit of the rock under the drill bit, the torsional elastic energy in the drill string will be released instantly, causi...

Claims

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Application Information

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IPC IPC(8): G01N3/38G01N3/40
Inventor 李玮李卓伦李思琪李井辉杨斌李亚楠
Owner NORTHEAST GASOLINEEUM UNIV
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