CN103452546B - High-precision and long-distance depth detecting device and method for drill hole by adopting inertia pressure wave - Google Patents
High-precision and long-distance depth detecting device and method for drill hole by adopting inertia pressure wave Download PDFInfo
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- CN103452546B CN103452546B CN201310415194.7A CN201310415194A CN103452546B CN 103452546 B CN103452546 B CN 103452546B CN 201310415194 A CN201310415194 A CN 201310415194A CN 103452546 B CN103452546 B CN 103452546B
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Abstract
The invention discloses a high-precision and long-distance depth detecting device and method for a drill hole by adopting an inertia pressure wave. The device comprises two parts, namely, a drill hole opening blocking silica gel pad and a drill hole opening striking rubber disc, wherein the drill hole opening blocking silica gel pad comprises an opening (1), a hollow silica gel blocking ring (2), and a silica gel plate (3); the silica gel plate (3) is a square plate with certain thickness; the circular opening (1) is positioned in the center position of the silica gel (3); the annular hollow silica gel blocking ring (2) is arranged on the periphery of the opening (1); a bulge slightly higher than the plane of the silica gel plate (3) is arranged on the hollow silica gel blocking ring (2); the drill hole opening striking rubber disc is a circular cover-shaped object. The method for detecting the depth of the drill hole, provided by the invention, comprises the following steps: a drill hole opening blocked by the drill hole opening blocking silica gel pad is struck by the drill hole opening striking rubber disc to generate an inertia air pressure shock wave, and the drill hole depth can be computed through recording and treating a return wave of the inertia pressure wave. The method for detecting the drill hole depth is simple, convenient and fast, the detecting distance is long, and the precision reaching the centimeter-level is greatly superior to the detecting precision in the prior art.
Description
Technical field
The invention belongs to echo ranging technical field, relate to inertia barometric wave boring sounding gear and the method for the long distance of a kind of high accuracy.
Background technology
Underground coal mine is control face gas, needs to beat mash gas pumping drilling; For leting speeper needs to pry into the boring that discharges water.Whether the degree of depth of boring reaches designing requirement, is very crucial for safety in production.On this external oil field, know that the oil well liquid level degree of depth is the important evidence ensureing safety of pumping unit, high-efficiency operation.Now need a kind of quick method measured boring hole depth accurately or know the liquid level degree of depth in drilling well, to test to drilling depth.
Current measurement drilling depth has three kinds of ways, one is knock the afterbody of drilling rod in boring to inspire shock wave, run of steel is calculated by detecting drilling rod echo, this kind of method relies on drilling rod, drilling rod echo is often can not receive when drilling rod is holed the clamping of interior mud, and when dry hole measurement can receive echo, certainty of measurement is limited (hundred meters of depth errors are meter level) also.Two is inspire sound wave in hell, calculates drilling depth by the echo of sound wave in boring air column.Though this kind of method can survey the open-hole that drilling rod has been extracted, because sound wave is decayed severity in the borehole, fathom limited.Above two kinds of methods, all based on echo ranging, also having a kind of non-echo ranging formula measuring method to be install instrument additional on rig, directly recording drilling depth when creeping into, and result comparatively accurately still measures trouble.
In sum, the method measuring drilling depth in prior art exists to measure and relies on drilling rod, cannot measure the open-hole degree of depth or open-hole and to fathom the problems such as limited, limited precision, measurement trouble.
Summary of the invention
The deficiency that the object of the invention is to exist for existing measurement drilling depth method provides inertia barometric wave boring sounding gear and the method for the long distance of a kind of high accuracy, solve to measure and rely on drilling rod, open-hole hole depth or open-hole cannot be surveyed and to fathom limited, limited precision, the troublesome problem of measurement.
For achieving the above object, the technical solution adopted in the present invention is:
The inertia barometric wave boring sounding gear of the long distance of a kind of high accuracy, comprise hell shutoff silicagel pad and hell bounces rubber disc two parts, wherein, described hell shutoff silicagel pad comprises perforate 1, hollow silica gel shutoff ring 2 and silica gel plate 3, described silica gel plate 3 is for having certain thickness square plate, and perforate 1 is circular, is positioned at the center of silica gel plate 3, perforate 1 surrounding arranges circular hollow silica gel shutoff ring 2, and described hollow silica gel shutoff ring 2 has the projection a little more than silica gel plate 3 plane; It is circular lid that described hell bounces rubber disc, center outwardly convex, and described rubber disc diameter is more bigger than hollow silica gel shutoff ring 2 diameter of hell shutoff silicagel pad.
Wherein, the size of the hollow silica gel shutoff ring 2 of described hell shutoff silicagel pad is suitable with hell size, and shutoff is tight, and the rapping surface formed after shutoff is comparatively straight, avoiding hell to bounce rubber disc and rapping surface cannot tight connecting when bouncing, and causes gas pressure leak.
Wherein, described hell shutoff silicagel pad thickness is more than 10mm.
Wherein, described hell bounces the rubber that rubber disc selects ductile strength large, and web encloses soft quality rubber ring, to strengthen plugging effect when bouncing along design one.
The present invention discloses the inertia barometric wave boring depth detecting method of the long distance of a kind of high accuracy, comprise the following steps:
(1) select the hell shutoff silicagel pad being applicable to bore size, be covered in boring to be measured, guarantee close contact between the hole wall shutoff ring of hell shutoff silicagel pad and drill hole wall, tightness is good;
(2) probe of drilling depth finder is put into hell, bounce rubber disc with hell and bounce hell shutoff silicagel pad, air column in percussive drilling, excite inertia air pressure shock wave;
(3) record inertia barometric wave echo, bounce moment and inertia barometric wave echo moment, calculating echo time delay through data processing is selected, accordingly and environment temperature calculate drilling depth.
Wherein, described hell bounces rubber disc will stop the sufficiently long time after bouncing, and ensures that echo and multiecho are all received smoothly first, then removes out rubber disc.
Know-why: the described inertia air pressure shock wave that the present invention excites, its principle is: the air in boring can be considered the internal diameter comparatively evenly air column of all round closure, when the recessed disk like elastomeric material exceeding aperture by size bounces hell rapidly and seals aperture, the air at hell place can be subject to a temporary impact pressure, this percussive pressure is done one dimension along boring and is propagated, due to the sealing of hole wall, propagation loss is very little.Percussive pressure is when propagating into foot of hole with velocity of sound, at this moment in two kinds of situation: if 1. foot of hole is closed, gas column bottom can be made local hyperbar is formed because of the stop of foot of hole, then under the effect of draught head, percussive pressure can be propagated along gas column resilience with velocity of sound, is detected by instrument in aperture; 2., if foot of hole is open, with atmosphere, percussive pressure sweeps along air to go out boring under the effect of inertia force, boring internal gas pressure can be caused to decline, and outside air recharges boring under the effect of pressure differential subsequently, forms new percussive pressure, and be back to hell with velocity of sound, detected by instrument.Calculate the time difference of bouncing moment and barometric wave echo moment, then input environment temperature, just can according to the relational expression of the velocity of sound (V) with temperature (T):
calculate SVEL comparatively accurately, and then draw drilling depth comparatively accurately.
Beneficial effect
Compared with prior art, the present invention directly can measure the open-hole hole depth that drilling rod has been extracted, can also measure the length of the pipeline that two ends all open; Good in hole wall closure, internal diameter enough thick (more than 5cm has better effect) and in more uniform situation, investigation depth can reach more than 300m, the super existing boring bathymetry based on echo far away, precision can reach Centimeter Level, is greatly better than the detection accuracy of prior art; Detection method is simple and convenient.
Accompanying drawing explanation
Fig. 1 is the structure chart of hell shutoff silicagel pad of the present invention;
Fig. 2 is the elevation that hell of the present invention bounces rubber disc;
Fig. 3 is the lateral view that hell of the present invention bounces rubber disc;
Fig. 4 is the oblique view that hell of the present invention bounces rubber disc;
Fig. 5 utilizes boring depth detecting method of the present invention to measure the echo data of its Length of air column to the drilling rod that a segment length is 54 meters.
In figure, 1 is perforate; 2 is hollow silica gel shutoff ring; 3 is silica gel plate.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be described in detail, can be easier to be readily appreciated by one skilled in the art, thus make more explicit defining to protection scope of the present invention to make advantages and features of the invention.
The inertia barometric wave boring sounding gear of the long distance of a kind of high accuracy, comprise hell shutoff silicagel pad and hell bounces rubber disc two parts, wherein, described hell shutoff silicagel pad comprises perforate 1, hollow silica gel shutoff ring 2 and silica gel plate 3, described silica gel plate 3 is for having certain thickness square plate, and perforate 1 is circular, is positioned at the center of silica gel plate 3, perforate 1 surrounding arranges circular hollow silica gel shutoff ring 2, and described hollow silica gel shutoff ring 2 has the projection a little more than silica gel plate 3 plane; It is circular lid that described hell bounces rubber disc, center outwardly convex, and described rubber disc diameter is more bigger than hollow silica gel shutoff ring 2 diameter of hell shutoff silicagel pad.
Wherein, the size of the hollow silica gel shutoff ring 2 of described hell shutoff silicagel pad is suitable with hell size, and shutoff is tight, and the rapping surface formed after shutoff is comparatively straight, avoiding hell to bounce rubber disc and rapping surface cannot tight connecting when bouncing, and causes gas pressure leak.
Wherein, described hell shutoff silicagel pad thickness is more than 10mm.
Wherein, described hell bounces the rubber that rubber disc selects ductile strength large, and web encloses soft quality rubber ring, to strengthen plugging effect when bouncing along design one.
The present invention discloses the inertia barometric wave boring depth detecting method of the long distance of a kind of high accuracy, comprise the following steps:
(1) select the hell shutoff silicagel pad being applicable to bore size, be covered in boring to be measured, guarantee close contact between the hole wall shutoff ring of hell shutoff silicagel pad and drill hole wall, tightness is good;
(2) probe of drilling depth finder is put into hell, bounce hell and bounce rubber disc, with Churn drill port closing silicagel pad, excite inertia air pressure shock wave;
(3) record inertia barometric wave echo, bounce moment and inertia barometric wave echo moment, calculating echo time delay through data processing is selected, accordingly and environment temperature calculate drilling depth.
Wherein, described hell bounces rubber disc will stop the sufficiently long time after bouncing, and ensures that echo and multiecho are all received smoothly first, then removes out rubber disc.
embodiment 1:
Closely be connected one section, overall length is the drilling rod of 54 meters, and apply the length that boring depth detecting method of the present invention measures its inner air post, test data waveform as shown in Figure 5.
The echo that in Fig. 5, raw four naked eyes of experimental data common property can be distinguished, wherein the amplitude of an echo only has a small amount of decay compared with the amplitude of excitation wave, the 4th the more difficult identification of echo.Spread length, one time echo have propagated 108m, and four times echo have propagated 432m.Consider that multiecho exists comparatively macro-energy loss when transferring in the direction of propagation, therefore when dark with an echo gaging hole, the drilling depth that method of the present invention can detect, steadily more than 300m, meets colliery demand completely.When condition is favourable, investigation depth is even hopeful to break through 500m, excites and receiving system if improve, and carry out local strength's amplification when receiving the echo of inertia barometric wave by undergauge, investigation depth is expected to extend to more than 1000m.
That reads data in Fig. 5 excites the moment involving each echo, and calculates the run of steel representated by each echo, draws following table:
The excitation wave of table 154 meter drilling rod and the moment of each echo and the run of steel calculated
As can be seen from the table, the pipe range that first three time echo data calculates is respectively 54.02m, 53.96m, 53.93m, and the average of first three data is about 53.97m, and with the error of air column actual length 54m in Centimeter Level, degree of error is below 0.06%.
Last it is noted that obviously, above-described embodiment is only for example of the present invention is clearly described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of amplifying out or variation be still among protection scope of the present invention.
Claims (6)
1. the inertia barometric wave boring sounding gear of the long distance of high accuracy, it is characterized in that: comprise hell shutoff silicagel pad and hell bounces rubber disc two parts, wherein, described hell shutoff silicagel pad comprises perforate (1), hollow silica gel shutoff ring (2) and silica gel plate (3), described silica gel plate (3) is for having certain thickness square plate, perforate (1) is circular, be positioned at the center of silica gel plate (3), perforate (1) arranges annular hollow silica gel shutoff ring (2) around, described hollow silica gel shutoff ring (2) has the projection a little more than silica gel plate (3) plane, it is circular lid that described hell bounces rubber disc, center outwardly convex, and described rubber disc diameter is more bigger than hollow silica gel shutoff ring (2) diameter of hell shutoff silicagel pad.
2. inertia barometric wave boring sounding gear as claimed in claim 1, is characterized in that: the size of hollow silica gel shutoff ring (2) of described hell shutoff silicagel pad is suitable with hell size.
3. inertia barometric wave boring sounding gear as claimed in claim 1, is characterized in that: described hell shutoff silicagel pad thickness is more than 10mm.
4. inertia barometric wave boring sounding gear as claimed in claim 1, it is characterized in that: described hell bounces the rubber that rubber disc selects ductile strength large, web encloses soft quality rubber ring, to strengthen plugging effect when bouncing along design one.
5. a method for the inertia barometric wave boring depth measurement of the long distance of high accuracy, is characterized in that: comprise the following steps,
(1) select the hell shutoff silicagel pad being applicable to bore size, be covered in boring to be measured, guarantee close contact between the hole wall shutoff ring of hell shutoff silicagel pad and drill hole wall, tightness is good;
(2) probe of drilling depth finder is put into hell, bounce rubber disc with hell and bounce hell shutoff silicagel pad, air column in percussive drilling, excite inertia air pressure shock wave;
(3) record inertia barometric wave echo, bounce moment and inertia barometric wave echo moment, calculating echo time delay through data processing is selected, accordingly and environment temperature calculate drilling depth.
6. the method for inertia barometric wave boring depth measurement as claimed in claim 5, is characterized in that: bounce after described hell bounces rubber disc and will stop the sufficiently long time, ensures that echo and multiecho are all received smoothly first, then remove out rubber disc.
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| CN201310415194.7A CN103452546B (en) | 2013-09-12 | 2013-09-12 | High-precision and long-distance depth detecting device and method for drill hole by adopting inertia pressure wave |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101603422A (en) * | 2009-07-20 | 2009-12-16 | 西安华舜测量设备有限责任公司 | A kind of method of measuring the device of deep hole hole depth and measuring hole depth |
| CN102022108A (en) * | 2010-07-27 | 2011-04-20 | 岳强 | Automatic infrasonic wave non-pressure oil well liquid level monitoring instrument |
| CN102268988A (en) * | 2010-06-03 | 2011-12-07 | 高占坤 | Method for measuring well depth by using gas in compression well |
| CN202228067U (en) * | 2011-06-21 | 2012-05-23 | 北京格瑞迪斯石油技术有限公司 | Liquid level monitoring device |
| CN102477863A (en) * | 2010-11-26 | 2012-05-30 | 中国石油天然气股份有限公司 | Liquid level monitoring device for coal bed gas non-pressure well |
| CN202338331U (en) * | 2011-11-03 | 2012-07-18 | 中国石油天然气股份有限公司 | Online oil well liquid level monitoring device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8353677B2 (en) * | 2009-10-05 | 2013-01-15 | Chevron U.S.A. Inc. | System and method for sensing a liquid level |
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- 2013-09-12 CN CN201310415194.7A patent/CN103452546B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101603422A (en) * | 2009-07-20 | 2009-12-16 | 西安华舜测量设备有限责任公司 | A kind of method of measuring the device of deep hole hole depth and measuring hole depth |
| CN102268988A (en) * | 2010-06-03 | 2011-12-07 | 高占坤 | Method for measuring well depth by using gas in compression well |
| CN102022108A (en) * | 2010-07-27 | 2011-04-20 | 岳强 | Automatic infrasonic wave non-pressure oil well liquid level monitoring instrument |
| CN102477863A (en) * | 2010-11-26 | 2012-05-30 | 中国石油天然气股份有限公司 | Liquid level monitoring device for coal bed gas non-pressure well |
| CN202228067U (en) * | 2011-06-21 | 2012-05-23 | 北京格瑞迪斯石油技术有限公司 | Liquid level monitoring device |
| CN202338331U (en) * | 2011-11-03 | 2012-07-18 | 中国石油天然气股份有限公司 | Online oil well liquid level monitoring device |
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