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Dynamic and static load combined rock breaking test apparatus and test method

A test device and test method technology, applied in the fields of oil and gas exploration, geological exploration, and geothermal well development, can solve problems such as large influence of regional strata, unstable rock-breaking effect, and in-depth understanding of rock-breaking mechanism, etc., and achieve the effect of convenient replacement

Active Publication Date: 2020-02-04
中石化石油工程技术服务有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the continuous increase of well depth, the harder the rock encountered, the stronger the abrasiveness, and the more difficult it is to break the rock, the conventional drilling technology can no longer meet the needs of drilling speed. Therefore, such as screw drilling tools, turbo drilling tools, rotary punching tools, New drilling speed-increasing tools and bits such as impregnated diamond bits and hybrid bits have become the focus of current research and development
[0003] However, these new speed-increasing tools and drill bits are greatly affected by the regional formation during field application, and the rock breaking effect is unstable and sometimes good and sometimes bad. The test device and method of the rock-breaking effect have resulted in a poor understanding of the rock-breaking mechanism of each tool and drill bit, and poor matching between tool performance, drill bit type and field drilling parameters and formation lithology

Method used

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  • Dynamic and static load combined rock breaking test apparatus and test method
  • Dynamic and static load combined rock breaking test apparatus and test method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] like figure 1 , figure 2 As shown, a dynamic and static load combined rock-breaking test method is based on the test device described in the embodiment of the present invention to realize static pressure load cutting and scoring rock-breaking. The specific implementation content is as follows:

[0087] (1) The control cabinet 28 controls the guide rail motor to adjust the rock sample 20 on the rock sample platform 23 to a suitable position, and fix the rock sample platform 23;

[0088] (2) The control cabinet 28 adjusts the confining pressure value generated by the rock sample 20 by controlling the clamping cylinder 10, and the confining pressure is controlled by the hydraulic station 29 and monitored in real time by the confining pressure sensor 26;

[0089] (3) The control cabinet 28 extends downwards by controlling the piston rods 3 of the two axially pressurized oil cylinders 1 to drive the lifting platform 7 to slide down along the guide column 8, and the lifting...

Embodiment 2

[0093] like figure 1 , figure 2 As shown, a dynamic and static load combined rock breaking test method is based on the test device described in the embodiment of the present invention to achieve dynamic load axial impact rock breaking, the specific implementation content is as follows:

[0094] (1) The control cabinet 28 controls the guide rail motor to adjust the rock sample 20 on the rock sample platform 23 to a suitable position, and fix the rock sample platform 23;

[0095] (2) The control cabinet 28 adjusts the confining pressure value generated by the rock sample 20 by controlling the clamping cylinder 10, and the confining pressure is controlled by the hydraulic station 29 and monitored in real time by the confining pressure sensor 26;

[0096] (3) The control cabinet 28 extends downwards by controlling the piston rods 3 of the two axially pressurized oil cylinders 1 to drive the lifting platform 7 to slide down along the guide column 8, and the lifting platform 7 pus...

Embodiment 3

[0100] like figure 1 , figure 2 As shown, a dynamic and static load combined rock breaking test method is based on the test device described in the embodiment of the present invention to realize static load drilling pressure + dynamic load impact combined rock breaking. The specific implementation content is as follows:

[0101] (1) The control cabinet 28 controls the rail motor to adjust the rock sample 20 on the rock sample table 23 to a suitable position, and fix the rock sample table 23 .

[0102] (2) The control cabinet 28 adjusts the confining pressure value generated by the rock sample 20 by controlling the clamping cylinder 10, and the confining pressure is controlled by the hydraulic station 29 and monitored in real time by the confining pressure sensor 26;

[0103] (3) The control cabinet 28 extends downwards by controlling the piston rods 3 of the two axially pressurized oil cylinders 1 to drive the lifting platform 7 to slide down along the guide column 8, and th...

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Abstract

The present invention discloses a dynamic and static load combined rock breaking test apparatus and a test method. The test apparatus mainly comprises an axial feed cylinder, a fixed platform, a piston rod, a guide pillar, a displacement sensor, a lifting platform, a torque sensor, a grip cylinder, a base, a rotary impact mechanism assembly, a drive motor, a quartz piezoelectric sensor, a drill stem, a micro-drill, a rock sample, a guide rail motor, a cross guide rail, a bit weight sensor, a confining pressure sensor, a computer, a control cabinet and a hydraulic power unit. The axial feed cylinder drives the lifting platform to slide up and down. The drive motor drives the rotary percussion mechanism assembly to apply rotational motion or rotary percussion motion to the micro-drill. The grip cylinder applies a confining pressure to the rock sample. The guide rail motor adjusts the position of the rock sample. The bit weight sensor, the confining pressure sensor, the displacement sensor, the torque sensor, and the quartz piezoelectric sensor are all connected to the computer. The dynamic and static load combined rock breaking test apparatus and the test method can comprehensively simulate various rock breaking states of a drill in a drilling process, and provide a theoretical basis for determining downhole acceleration tool performance parameters and field drilling parameters.

Description

technical field [0001] The invention relates to the technical fields of oil and gas exploration, geological exploration and geothermal well development, in particular to a static load combined rock breaking test device and a test method. Background technique [0002] With the continuous acceleration of oil and gas resource exploration, the exploration of deep and ultra-deep unconventional oil and gas resources has become an inevitable trend of global exploration and development. However, due to the continuous increase of well depth, the harder the rock encountered, the stronger the abrasiveness, and the more difficult it is to break the rock, the conventional drilling technology can no longer meet the needs of drilling speed. Therefore, such as screw drilling tools, turbo drilling tools, rotary punching tools, New drilling speed-increasing tools and drill bits such as impregnated diamond drill bits and hybrid drill bits have become the focus of current research and developme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/58G01N3/02
CPCG01N3/58G01N3/02
Inventor 甘心侯树刚兰凯李帮民孔华李伟廷
Owner 中石化石油工程技术服务有限公司