CN101581219A - Device and method for measurement while drilling of ground stress - Google Patents
Device and method for measurement while drilling of ground stress Download PDFInfo
- Publication number
- CN101581219A CN101581219A CNA2008101117093A CN200810111709A CN101581219A CN 101581219 A CN101581219 A CN 101581219A CN A2008101117093 A CNA2008101117093 A CN A2008101117093A CN 200810111709 A CN200810111709 A CN 200810111709A CN 101581219 A CN101581219 A CN 101581219A
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- pressure sensor
- drilling
- slip lid
- measurement
- drilling rod
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
- E21B47/017—Protecting measuring instruments
Abstract
The invention discloses a device for the measurement while drilling of ground stress, which comprises a drill, a drill rod and a drill head, wherein the side wall, close to the drill head, of the drill rod connected with the drill head is provided with a pressure sensor; and the drill rod is also provided with a sliding cover protecting the pressure sensor; and the sliding cover slides open and closes through a driving device. The invention also discloses a method for the measurement while drilling of ground stress, which comprises the following steps: selecting a position to be measured and performing drilling construction by using the device for the measurement while drilling of ground stress; stopping a machine after drilling, separating the drill rod from the drill, directly connecting the pressure sensor with a signal processing unit, and sliding the sliding cover open to expose the pressure sensor by using the sliding cover driving device; and measuring the ground stress of a coal bed by using the pressure sensor. The device and the method can measure the ground stress while drilling, be used underground conveniently, allow for continuous, accurate and quick measurement in a measurement hole and measure the ground stress of soft coal beds.
Description
Technical field
The present invention relates to a kind of geostress survey device and method, relate in particular to a kind of measurement while drilling of ground stress device and method.
Background technology
In mining engineering, often run into the excessive ore deposit pressure that causes of tectonic stress and manifest, so geostress survey is to carry out often along with the process of opening driving and coal mining in the coal seam.But present measuring method is the measuring method of continuing to use in the rock mechanics, at first use rig in the punching of the coal seam of the degree of depth to be measured when promptly measuring, then drilling rod is extracted, pressure sensor is put into the measured hole of beating, with clay measured hole is tamped again, need wait until that pressure in the measured hole reaches balance after, could measure geostatic stress accurately by pressure sensor, and the pressure in the hole reach time that balance waits for need usually very long, so this method complex process and time-consuming not only.And when needing to measure the geostatic stress of the different coal degree of depth, need get out measured hole separately respectively.Because if the words that the more shallow measured hole that utilization is beaten continues to measure, just the ickings that need will insert originally earlier or soil and pressure sensor take out from measured hole, on original basis, get out darker measured hole with rig again, the degree of depth of common this measured hole is in more than 10 meters scopes, such operation is very complicated, is not easy to the down-hole implementation and operation.Particularly when soft seam was difficult for pore-forming, this method just can not be used again.Because along with extracting of drilling rod, the soft seam ickings of measured hole hole wall will slump in measured hole, the hole is blocked, can't put into pressure sensor and can't use this method to measure the geostatic stress of soft seam.
Summary of the invention
At the problem that prior art exists, the purpose of this invention is to provide a kind of can continuous measurement in a measured hole, Measuring Time is short and can measure the measurement while drilling of ground stress device and method of soft seam.
For achieving the above object; the invention provides a kind of measurement while drilling of ground stress device; comprise rig, drilling rod and drill bit; be provided with pressure sensor with the sidewall near drill bit on the drilling rod that drill bit links to each other; also be provided with the slip lid of protection pressure sensor on the described drilling rod; pressure sensor is revealed, pressure sensor is sealed by slip lid, described slip lid is realized sliping off and closing by drive unit.
Further, described pressure sensor is two, and angle is 90 °, and described slip lid is a dome-shaped, and external diameter is identical with the drilling rod external diameter, and axis is parallel with drill rod axis, has the slide rail that matches with slip lid on the drilling rod, and slip lid can be endwisely slipped along drilling rod.
Further, the drive unit of described slip lid is a motor driver, and the tooth bar that comprises motor, is fixed on the gear on the motor shaft and matches with gear, described tooth bar are fixed on described slip lid inboard.
Further, described motor is a small synchronous motor.
The present invention also provides a kind of measurement while drilling of ground stress method, comprises the steps:
1) in the position that the mining face under mine selection need be measured, according to the dip angle of hole that designs, orientation, the degree of depth and aperture, with measurement while drilling of ground stress device construction drill;
2) shut down after having bored the hole, drilling rod and rig are broken away from, again pressure sensor is directly connected signal processing apparatus, by the slip lid drive unit slip lid is sliped off then and expose pressure sensor
3) measure the geostatic stress in coal seam by pressure sensor.
Further, also comprise the steps:
4) drive unit by slip lid drives slip lid and cuts out, and makes the disconnection that is connected of pressure sensor and signal processing apparatus;
5) rig and drilling rod are reconnected, continue the degree of depth punching that to measure to the next one;
6) shut down after having bored the hole, drilling rod and rig are broken away from, again pressure sensor is directly connected signal processing apparatus, by the slip lid drive unit slip lid is sliped off then and expose pressure sensor
7) measure the geostatic stress in coal seam by pressure sensor.
The present invention is by additional a kind of device behind drill bit, this device is made up of parts such as sensor, small synchronous motor, slip lids, can stop to creep into capable geostress survey at any time, be made as the integrated unit that directly to control and to monitor outward, control operation, monitoring in real time, data read and access facility is integrated, can be easily use in the down-hole, can continuous measurement in a measured hole, measure accurately and the time short, and can measure the geostatic stress of soft seam.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail:
Fig. 1 is the sectional view of a kind of measurement while drilling of ground stress device of the present invention;
Fig. 2 is that the A-A of Fig. 1 is to sectional view;
Fig. 3 is that the B-B of Fig. 1 is to sectional view.
The specific embodiment
Embodiment 1:
As shown in Figure 1 to Figure 3; the embodiment of the invention provides a kind of measurement while drilling of ground stress device; comprise rig (not shown), drilling rod 2 and drill bit 1; be provided with pressure sensor 3 with the sidewall near drill bit 1 on the drilling rod 2 that drill bit 1 links to each other; also be provided with the slip lid 21 of protection pressure sensor 3 on the drilling rod 2; pressure sensor 3 is revealed, pressure sensor 3 is sealed by slip lid 21, slip lid 21 is realized sliping off and closing by drive unit.Pressure sensor 3 is two, and angle is 90 °, can measured X, and the geostatic stress of Y both direction.Each pressure sensor 3 is provided with data wire 31, and wiring terminal is the plug mode, makes things convenient for wiring (lead that can utilize plug will have plug connects successively).Slip lid 21 is a dome-shaped, and size should be able to cover two pressure sensors fully, and for example central angle can be greater than 100 °, so that two pressure sensors 3 can be covered fully, external diameter is identical with the drilling rod external diameter, and axis is parallel with drilling rod 2 axis.Have the slide rail 22 that matches with slip lid 21 on the drilling rod 2, slip lid 21 can be endwisely slipped along drilling rod 2.The drive unit of slip lid 21 is a motor driver, comprises the motor 4 that is fixed on drilling rod 2 inwalls, the tooth bar 42 that is fixed on the gear 43 on the motor shaft and matches with gear, and tooth bar 42 is fixed on slip lid 21 inboards.Motor 4 is a small synchronous motor.Motor 4 is provided with connecting line 41, and wiring terminal is the plug mode, makes things convenient for wiring (lead that can utilize plug will have plug connects successively).
During use, the measurement while drilling of ground stress device that present embodiment is provided pierces in the coal seam by rig (can select the more piece drilling rod according to the different degree of depth), connect various electric circuits then, drive unit by slip lid 21 slips off slip lid 21, the coal seam of being scattered will contact with the pressure sensor 3 that exposes, and just can measure the geostatic stress in coal seam by pressure sensor 3.Continue the geostatic stress in the darker coal seam of measurement as need, slip lid 21 is closed by drive unit, and then the coal bed drilling of Xiang Gengshen, the geostatic stress that above-mentioned measuring process can be measured the coal seam of respective depth repeated again.
Embodiment 2:
The embodiment of the invention provides a kind of measurement while drilling of ground stress method, comprises the steps:
1),,, at this moment, keep slip lid 21 to be in closed condition with embodiment 1 described measurement while drilling of ground stress device construction drill according to the dip angle of hole that designs, orientation, the degree of depth and aperture in the position that the mining face under mine selection need be measured;
2) shut down after having bored the hole, drilling rod 2 and rig are broken away from, again pressure sensor 3 is directly connected the signal processing apparatus (not shown), again with other various circuit communications, the drive unit by slip lid 21 slips off slip lid 21 to expose pressure sensor 3 then;
Concrete, drive slip lid 21 and slip off by control motor 4 driven gears 43, tooth bar 42 mechanisms.
3) pass through the geostatic stress that pressure sensor 3 is measured coal seams.
If also will measure the geostatic stress of darker position, then also comprise the steps:
4) drive unit by slip lid 21 drives slip lid 21 and cuts out, and makes being connected and other circuit disconnections of pressure sensor 3 and signal processing apparatus;
5) rig and drilling rod 2 are reconnected, continue the degree of depth punching that to measure to the next one;
6) shut down after having bored the hole, drilling rod 2 and rig are broken away from, again pressure sensor 3 is directly connected signal processing apparatus, and connect other circuit, the drive unit by slip lid 21 slips off slip lid 21 to expose pressure sensor 3 then;
7) pass through the geostatic stress that pressure sensor 3 is measured coal seams.
The present invention is by additional a kind of device behind drill bit, this device is made up of parts such as sensor, small synchronous motor, slip lids, can stop to creep into capable geostress survey at any time, be made as the integrated unit that directly to control and to monitor outward, control operation, monitoring in real time, data read and access facility is integrated, can be easily use in the down-hole, can continuous measurement in a measured hole, measure accurately and the time short.Owing to adopt the mode of measurement while drilling, drilling rod need not be extracted during measurement, can solve the problem that soft seam subsides, can measure the geostatic stress of soft seam effectively.
Claims (6)
1. measurement while drilling of ground stress device; comprise rig, drilling rod and drill bit; it is characterized in that; be provided with pressure sensor with the sidewall near drill bit on the drilling rod that drill bit links to each other; also be provided with the slip lid of protection pressure sensor on the described drilling rod; pressure sensor is revealed, pressure sensor is sealed by slip lid, described slip lid is realized sliping off and closing by the drive unit that is arranged on described drilling rod inside.
2. measurement while drilling of ground stress device according to claim 1, it is characterized in that, described pressure sensor is two, angle is 90 °, described slip lid is a dome-shaped, and external diameter is identical with the drilling rod external diameter, and axis is parallel with drill rod axis, have the slide rail that matches with slip lid on the drilling rod, slip lid can be endwisely slipped along drilling rod.
3. measurement while drilling of ground stress device according to claim 1, it is characterized in that, the drive unit of described slip lid is a motor driver, comprise the motor that is fixed on the drilling rod inwall, the tooth bar that is fixed on the gear on the motor shaft and matches with gear, described tooth bar is fixed on described slip lid inboard.
4. measurement while drilling of ground stress device according to claim 3 is characterized in that, described motor is a small synchronous motor.
5. a measurement while drilling of ground stress method is characterized in that, comprises the steps:
1) in the position that the mining face under mine selection need be measured, according to the dip angle of hole that designs, orientation, the degree of depth and aperture, with the described measurement while drilling of ground stress device of claim 1 construction drill;
2) shut down after having bored the hole, drilling rod and rig are broken away from, again pressure sensor is directly connected signal processing apparatus, by the slip lid drive unit slip lid is sliped off then and expose pressure sensor;
3) measure the geostatic stress in coal seam by pressure sensor.
6. measurement while drilling of ground stress method according to claim 5 is characterized in that, also comprises the steps:
4) drive unit by slip lid drives slip lid and cuts out, and makes the disconnection that is connected of pressure sensor and signal processing apparatus;
5) rig and drilling rod are reconnected, continue the degree of depth punching that to measure to the next one;
6) shut down after having bored the hole, drilling rod and rig are broken away from, again pressure sensor is directly connected signal processing apparatus, by the slip lid drive unit slip lid is sliped off then and expose pressure sensor;
7) measure the geostatic stress in coal seam by pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810111709A CN101581219B (en) | 2008-05-16 | 2008-05-16 | Device and method for measurement while drilling of ground stress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810111709A CN101581219B (en) | 2008-05-16 | 2008-05-16 | Device and method for measurement while drilling of ground stress |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101581219A true CN101581219A (en) | 2009-11-18 |
| CN101581219B CN101581219B (en) | 2012-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810111709A Expired - Fee Related CN101581219B (en) | 2008-05-16 | 2008-05-16 | Device and method for measurement while drilling of ground stress |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892830A (en) * | 2010-04-27 | 2010-11-24 | 北京科技大学 | Deep ground stress measurement while drilling (MWD) system |
| CN102507049A (en) * | 2011-10-28 | 2012-06-20 | 西安欣源测控技术有限公司 | Drill hole vector stress sensor for mine |
| CN102852502A (en) * | 2012-04-18 | 2013-01-02 | 中国石油天然气股份有限公司 | Intelligent steam distribution process pipe column for horizontal steam injection well |
| CN102933787A (en) * | 2010-04-28 | 2013-02-13 | 贝克休斯公司 | PDC sensing element fabrication process and tool |
| CN103090841A (en) * | 2012-10-30 | 2013-05-08 | 中国煤炭科工集团太原研究院 | Cutting head tooth holder strain testing device under cutting working conditions of longitudinal shaft heading machine and method thereof |
| CN103335756A (en) * | 2013-07-08 | 2013-10-02 | 王涛 | Wireless roadway mining-induced stress monitoring device with drill bit |
| CN103790582A (en) * | 2014-01-26 | 2014-05-14 | 北京雷雨达科技有限公司 | Geostress measuring device and method |
| CN103953331A (en) * | 2014-04-29 | 2014-07-30 | 河南理工大学 | Self-drilling type in-situ measuring device of coal seam gas pressure |
| CN109374409A (en) * | 2018-10-16 | 2019-02-22 | 三峡大学 | A kind of method of on-site rapid measurement crustal stress |
| CN109577971A (en) * | 2018-12-17 | 2019-04-05 | 中国科学院武汉岩土力学研究所 | Detecting earth stress device and test method |
| WO2019103873A1 (en) | 2017-11-22 | 2019-05-31 | Baker Hughes, A Ge Company, Llc | Downhole tool protection cover |
| US10662769B2 (en) | 2010-04-28 | 2020-05-26 | Baker Hughes, A Ge Company, Llc | PDC sensing element fabrication process and tool |
-
2008
- 2008-05-16 CN CN200810111709A patent/CN101581219B/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892830B (en) * | 2010-04-27 | 2013-04-24 | 北京科技大学 | Deep ground stress measurement while drilling (MWD) system |
| CN101892830A (en) * | 2010-04-27 | 2010-11-24 | 北京科技大学 | Deep ground stress measurement while drilling (MWD) system |
| US10662769B2 (en) | 2010-04-28 | 2020-05-26 | Baker Hughes, A Ge Company, Llc | PDC sensing element fabrication process and tool |
| US9695683B2 (en) | 2010-04-28 | 2017-07-04 | Baker Hughes Incorporated | PDC sensing element fabrication process and tool |
| CN102933787A (en) * | 2010-04-28 | 2013-02-13 | 贝克休斯公司 | PDC sensing element fabrication process and tool |
| CN102507049A (en) * | 2011-10-28 | 2012-06-20 | 西安欣源测控技术有限公司 | Drill hole vector stress sensor for mine |
| CN102852502A (en) * | 2012-04-18 | 2013-01-02 | 中国石油天然气股份有限公司 | Intelligent steam distribution process pipe column for horizontal steam injection well |
| CN103090841A (en) * | 2012-10-30 | 2013-05-08 | 中国煤炭科工集团太原研究院 | Cutting head tooth holder strain testing device under cutting working conditions of longitudinal shaft heading machine and method thereof |
| CN103090841B (en) * | 2012-10-30 | 2016-03-30 | 中国煤炭科工集团太原研究院 | Cutting head toothholder strain detection testing device and method thereof under Vertical Axis Road-header cut operating mode |
| CN103335756A (en) * | 2013-07-08 | 2013-10-02 | 王涛 | Wireless roadway mining-induced stress monitoring device with drill bit |
| CN103790582A (en) * | 2014-01-26 | 2014-05-14 | 北京雷雨达科技有限公司 | Geostress measuring device and method |
| CN103953331B (en) * | 2014-04-29 | 2019-07-19 | 河南理工大学 | A kind of self-drilling type coal-bed gas pressure in-site detecting device |
| CN103953331A (en) * | 2014-04-29 | 2014-07-30 | 河南理工大学 | Self-drilling type in-situ measuring device of coal seam gas pressure |
| WO2019103873A1 (en) | 2017-11-22 | 2019-05-31 | Baker Hughes, A Ge Company, Llc | Downhole tool protection cover |
| CN111373120A (en) * | 2017-11-22 | 2020-07-03 | 贝克休斯控股有限责任公司 | Downhole tool protective cover |
| US10989042B2 (en) | 2017-11-22 | 2021-04-27 | Baker Hughes, A Ge Company, Llc | Downhole tool protection cover |
| CN111373120B (en) * | 2017-11-22 | 2023-08-29 | 贝克休斯控股有限责任公司 | Downhole tool protection cover |
| CN109374409A (en) * | 2018-10-16 | 2019-02-22 | 三峡大学 | A kind of method of on-site rapid measurement crustal stress |
| CN109374409B (en) * | 2018-10-16 | 2020-10-02 | 三峡大学 | Method for rapidly measuring ground stress on site |
| CN109577971A (en) * | 2018-12-17 | 2019-04-05 | 中国科学院武汉岩土力学研究所 | Detecting earth stress device and test method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101581219B (en) | 2012-10-17 |
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