Hydraulic fracturing ground stress testing system for panoramic drill hole inspection instrument

A testing system and peeping instrument technology, which is applied in the direction of earthwork drilling and production, wellbore/well components, etc., can solve the problems of inability to peek at the drilling hole, hinder the detection effect of surrounding rock, and make it difficult to monitor the condition of surrounding rock, so as to achieve convenient use , The effect of the test results is clear

Inactive Publication Date: 2014-06-11
冯刚
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the current borehole peeping instrument performs borehole peeping in the water-rich and broken zone of the surrounding rock, because the crack water in the rock formation in the borehole is often mixed with sediment and covers the photoelect

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  • Hydraulic fracturing ground stress testing system for panoramic drill hole inspection instrument

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Embodiment Construction

[0010] Such as figure 1 As shown, a hydraulic fracturing ground stress testing system of a panoramic drilling peeping instrument includes a high-pressure pipe 1, a pressure sensor 2, an accumulator 3, a high-pressure oil pump 4 and a data acquisition instrument 5, and one end of the high-pressure pipe 1 A water injection hole 6 is provided, the upper end of the water injection hole 6 is provided with a packer 7, the high-pressure pipe 1 is respectively connected with the accumulator 3 and the pressure sensor 2, the accumulator 3 is connected with the high-pressure oil pump 4, and the A flow meter 8 is provided at the place where the accumulator 3 is connected to the high-pressure oil pump 4 , and the pressure sensor 2 is connected to the data acquisition instrument 5 .

[0011] The two sides of the high-pressure pipe 1 are respectively provided with roadway roofs 9 .

[0012] The working principle of the present invention: firstly, in the drilled hole, the rubber packer 7 is ...

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Abstract

The invention discloses a hydraulic fracturing ground stress testing system for a panoramic drill hole inspection instrument. The hydraulic fracturing ground stress testing system comprises a high-pressure pipe, a pressure sensor, an energy-storing device, a high-pressure oil pump and a data acquisition instrument, wherein a water injection hole is formed in one end of the high-pressure pipe; packers are arranged at the upper end of the water injection hole; the high-pressure pipe is connected with the energy-saving device and the pressure sensor respectively; the energy storing device is connected with the high-pressure oil pump; a flow meter is arranged at the joint of the energy-storing device and the high-pressure oil pump; the pressure sensor is connected with the data acquisition instrument. In a drilled hole, the rubber packers are conveyed to a proper drilling position by a high-rigidity water injection pipe, high-pressure water is injected through the high-pressure pump and the energy-storing device, the water is injected into a rock hole between the packers under a high pressure till surrounding rock is fractured, and the high-pressure pump is closed to closing fractures; the data acquisition instrument is used for acquiring data, analyzing and calculating to obtain the maximum horizontal main stress and the minimum horizontal main stress, and the fracturing direction is the maximum horizontal main stress direction.

Description

technical field [0001] The invention relates to a hydraulic fracturing geostress testing system for a panoramic borehole peeping instrument. Background technique [0002] Borehole peeping is an important part of mine observation. It can be used to observe the range of surrounding rock loose circle, the effect of surrounding rock grouting reinforcement, the effect of bolt anchorage and the dynamic change of surrounding rock structure. It can also be used to observe surrounding rock in water-rich areas. The thickness of seepage fissures and the location of water gushing points, etc. [0003] When the current borehole peeping instrument performs borehole peeping in the water-rich and broken zone of the surrounding rock, because the rock fissure water in the borehole is often mixed with sediment and covers the photoelectric probe lens of the borehole peeping instrument, which seriously hinders the detection effect of the surrounding rock. Can't even carry out borehole peeping, ...

Claims

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Application Information

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IPC IPC(8): E21B49/00
Inventor 冯刚
Owner 冯刚
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