CN105626061B - Underground borehole structure detector and detection method - Google Patents
Underground borehole structure detector and detection method Download PDFInfo
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- CN105626061B CN105626061B CN201610139479.6A CN201610139479A CN105626061B CN 105626061 B CN105626061 B CN 105626061B CN 201610139479 A CN201610139479 A CN 201610139479A CN 105626061 B CN105626061 B CN 105626061B
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- probe
- detection tube
- detector
- host
- tube
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- 238000001514 detection method Methods 0.000 title claims abstract description 63
- 239000000523 sample Substances 0.000 claims abstract description 33
- 238000005553 drilling Methods 0.000 claims abstract description 30
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 10
- 239000001257 hydrogen Substances 0.000 claims abstract description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 8
- 238000004891 communication Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 23
- 238000005070 sampling Methods 0.000 claims description 14
- 230000002285 radioactive effect Effects 0.000 claims description 11
- 238000005259 measurement Methods 0.000 claims description 8
- 239000004636 vulcanized rubber Substances 0.000 claims description 3
- 239000003245 coal Substances 0.000 abstract description 18
- 239000007789 gas Substances 0.000 abstract description 13
- 239000003292 glue Substances 0.000 abstract 1
- 239000011435 rock Substances 0.000 description 4
- 239000013078 crystal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- -1 nickel metal hydride Chemical class 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- FVAUCKIRQBBSSJ-UHFFFAOYSA-M sodium iodide Chemical compound [Na+].[I-] FVAUCKIRQBBSSJ-UHFFFAOYSA-M 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- 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
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
-
- 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
- E21B47/04—Measuring depth or liquid level
-
- 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
- E21B47/26—Storing data down-hole, e.g. in a memory or on a record carrier
Abstract
The diversity of geology and coal beds in China causes that the drilling depth of drilling cannot meet the requirement, and the condition of unclean gas drainage occurs. The invention provides an underground drilling structure detector which consists of a ground part and an underground part, wherein the ground part is a charger and a computer, the underground part is a host, a detection tube and a detector, the computer is connected with the host through a communication cable, the charger is connected with the host through an electric wire cable, the underground drilling structure detector is characterized in that the host is connected with the detection tube through a first data wire and is connected with the detector through a second data wire, the structure of the detection tube consists of a first probe and a second probe, the first probe is internally provided with a gamma detector and a first circuit board, the second probe is internally provided with a voltage stabilizing protection circuit board, a natural gamma detector and a second circuit board, an external tube is arranged at the outer side of the second probe, a nickel-hydrogen battery pack is arranged in the external tube, and the nickel-hydrogen battery pack is connected with the voltage stabilizing protection circuit board, the natural gamma detector and the second circuit board are sealed into a whole in a glue way.
Description
Technical Field
The invention relates to a detector, in particular to a detector for a downhole drilling structure and a detection method.
Background
The gas drainage is a fundamental measure for preventing and controlling the coal mine gas disaster accident, and from the beginning of the 50 th century, the gas drainage is popularized in high gas and outstanding mines as an important measure for controlling the coal mine gas disaster in China; in 2002, the national coal mine safety supervision bureau formulates a coal mine gas control policy of 'first extraction and then later extraction, fixed yield by wind, monitoring and monitoring'; in 2006, it is clear that coal mine gas management must be maintained, gas drainage must be drilled first, then gas is discharged cleanly through drilling, through many years of efforts, the underground drilling technology of coal mines in China and equipment have been greatly developed, but on one hand, the diversity of geology and coal seams in China and the cultural quality of coal mine workers are generally not high, the drilling depth of drilling cannot meet the requirements, the condition of unclean gas drainage occurs, on the other hand, no special detector for detecting the drilling depth is available in the industry, and therefore a certain difficulty is brought to the drilling depth management work of coal mine gas, a certain hidden danger is buried for later safety production, and the safety production efficiency of the coal mine industry in China is severely restricted.
Disclosure of Invention
The aim of the invention is realized by the following technical scheme: the underground drilling structure detector consists of a ground part and a computer, wherein the ground part is a charger and the computer, the underground part is a host, a detection tube and a detector, the computer is connected with the host through a communication cable, the charger is connected with the host through an electric wire cable, the underground drilling structure detector is characterized in that the host is connected with the detection tube through a first data wire and is connected with the detector through a second data wire, the structure of the detection tube consists of a first probe and a second probe, the first probe is internally provided with a gamma detector and a first circuit board, the second probe is internally provided with a voltage stabilizing protection circuit board, a natural gamma detector and a second circuit board, an external tube is arranged outside the second probe, a nickel-hydrogen battery pack is arranged in the external tube, the nickel-hydrogen battery pack is connected with the voltage stabilizing protection circuit board, and the voltage stabilizing protection circuit board, the natural gamma detector and the second circuit board are glued into a whole.
The first probe and the second probe are all glued and sealed by SDL-1-24 vulcanized rubber.
And a data acquisition device is further arranged in the second probe.
The length of the first data line connecting line is less than or equal to 2m.
The connection length of the second data line is less than or equal to 4m.
And a RAM unit is arranged in the data acquisition unit.
The method for detecting the underground drilling structure is characterized by comprising the following steps of:
1) Before the mine is put down, the ground is connected with the detection tube 5 through the second data wire 4d by the charger 1, and is connected with the host computer 3 through the electric wire and cable 4c, so that the electricity is fully charged.
2) After the mine is reached, the power supplies of the detection tube 5 and the host computer 3 are turned on, and the initialization (i.e. the time synchronization) operation is carried out through the keys of the host computer 3, so that the display interface is displayed in a countdown mode;
3) Removing the second data line 4b connected with the detection tube 5, installing a 30 millicurie Ma241 radioactive source, and feeding the detection tube 5 into the hole bottom;
4) After the display interface is adjusted, logging by a drill rod lifting detection pipe method
5) After the measurement is completed, recording the sampling times and the sampling depth, taking out the detection tube 5 from the orifice, detaching the radioactive source, putting the radioactive source into the source tank, and covering the source tank cover tightly;
6) The second data line 4b is used for detaching the detection tube 5 and is connected with the detection tube 5, the first data line 4a and the host computer 3, and the data measured by the detection tube 5 is communicated to the host computer 3 to lift the well.
7) After reaching the ground, the power supply of the host computer 3 is turned on, and logging data communicated from the detection tube 5 in the host computer 3 and logging data of the depth finder 4 are communicated to the computer 2 to draw a logging curve.
8) The power supply of the host computer 3 can be turned off after the computer 2 is communicated, so that the underground logging work is completed.
Further, the method for lifting the drill rod in the step 4) comprises the steps of connecting the drill rod with the detection pipe, feeding the drill rod into the hole bottom, then connecting one stroke of a drilling machine to move outwards, acquiring logging data of the detection pipe in the moving process, and recording the logging depth of a logging by a host through a depth finder; in the process of extracting the drill rod well logging, the deep control lamp is kept on, and the speed of the detection tube is increased to be less than or equal to 10cm/S.
The beneficial effects of the invention are as follows:
the detector for the underground drilling structure consists of a host, a detecting tube and a depth detector. The instrument adopts a cable-free (by means of a drill rod sending and taking detection pipe) measurement mode, can measure horizontal holes, inclined holes and vertical holes, is applied to mine logging containing methane or explosive gas, and can save ineffective drilling cost from the ground to the underground especially for underground pre-mining detection of the coal mine.
The instrument can measure two parameters at a time: natural γ and select γ. The method is used for determining the position and depth of drilling holes through the coal seam and rock stratum, and can also be used for determining the depth, thickness and structure of the coal seam. Lithology can also be partitioned and lithology zones, fault zones can be determined, provided and used as a contrast of the formation and analysis of the in-hole configuration. The fault throw judgment can be carried out by combining a detector and an inclinometer with the directional drilling machine. The method is widely applied to engineering aspects such as mine, ground logging, highway and railway surveying and the like.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a flow chart of a method of detecting a downhole borehole configuration of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The underground drilling structure detector consists of a ground part and a computer 2, wherein the ground part comprises a charger 1 and the computer 2, the underground part comprises a host 3, a detection tube 5 and a detector 4, the computer 2 is connected with the host 3 through a communication cable 4d, the charger 1 is connected with the host 3 through a wire cable 4c, the underground drilling structure detector is characterized in that the host 3 is connected with the detection tube 5 through a first data wire 4a and is connected with the detector 4 through a second data wire 4b, the structure of the detection tube 5 consists of a first probe 50 and a second probe 51, a gamma detector 56 and a first circuit board 57 are arranged in the first probe 50, a voltage stabilizing protection circuit board 55, a natural gamma detector 53 and a second circuit board 52 are arranged in the second probe 51, an external tube 54 is arranged outside the second probe 51, a nickel-hydrogen battery pack is arranged in the external tube 54, the nickel-hydrogen battery pack is connected with the voltage stabilizing protection circuit board 55, and the voltage stabilizing protection circuit board 55, the natural gamma detector 53 and the second circuit board 52 are sealed into a whole.
The first probe 50 and the second probe 51 are all glued and sealed by SDL-1-24 vulcanized rubber.
The second probe 51 is also provided with a data collector.
The connecting length of the first data line 4a is less than or equal to 2m.
The connecting length of the second data line 4b is less than or equal to 4m.
And a RAM unit is arranged in the data acquisition unit.
The method for detecting the underground drilling structure is characterized by comprising the following steps of:
2) Before the mine is put down, the ground is connected with the detection tube 5 through the second data wire 4d by the charger 1, and is connected with the host computer 3 through the electric wire and cable 4c, so that the electricity is fully charged.
2) After the mine is reached, the power supplies of the detection tube 5 and the host computer 3 are turned on, and the initialization (i.e. the time synchronization) operation is carried out through the keys of the host computer 3, so that the display interface is displayed in a countdown mode;
3) Removing the second data line 4b connected with the detection tube 5, installing a 30 millicurie Ma241 radioactive source, and feeding the detection tube 5 into the hole bottom;
4) After the display interface is adjusted, logging by a drill rod lifting detection pipe method
5) After the measurement is completed, recording the sampling times and the sampling depth, taking out the detection tube 5 from the orifice, detaching the radioactive source, putting the radioactive source into the source tank, and covering the source tank cover tightly;
6) The second data line 4b is used for detaching the detection tube 5 and is connected with the detection tube 5, the first data line 4a and the host computer 3, and the data measured by the detection tube 5 is communicated to the host computer 3 to lift the well.
7) After reaching the ground, the power supply of the host computer 3 is turned on, and logging data communicated from the detection tube 5 in the host computer 3 and logging data of the depth finder 4 are communicated to the computer 2 to draw a logging curve.
8) The power supply of the host computer 3 can be turned off after the computer 2 is communicated, so that the underground logging work is completed.
Preferably, in the step 4), the drill rod lifting detection pipe method comprises the steps of connecting a detection pipe 5 with a drill rod, feeding the drill rod into the bottom of a hole, then using a drilling machine to connect one stroke to move outwards, acquiring logging data of the detection pipe 5 in the moving process, and simultaneously recording the logging depth of a well by a host computer 3 through a depth finder 4; in the process of extracting the drill rod well logging, the deep control lamp is kept on, and the speed of the detection tube is increased to be less than or equal to 10cm/S.
The charger 1 is powered by a D2700mAh/1.2V/12 string = 14.4V nickel metal hydride battery, rated at +14.4v. Intrinsic safety operating voltage/current: the +5V output was 500mA at a short circuit of 10V/180 mA.
During the cable-free measurement, the data collector in the detection tube 5 collects logging data at fixed time according to a program which is programmed in advance, and stores the logging data in the RAM unit, and the host computer 3 which synchronously works with the collection of the detection tube 5 records logging depth and is used for measuring the validity and invalidity of the data. Before both are used, synchronization is required with the second data line 4 b. Then, the detecting pipe 5 and the drill rod are connected and sent to the bottom of the hole, and then the drilling machine is used for outwards moving one stroke and one stroke, in the moving process, the detecting pipe 5 performs logging data acquisition, and meanwhile, the host computer 3 records the logging depth through the depth finder 4. After logging is completed, the data in the detection tube 5 is communicated to the host computer 3 through a data line. The host computer 3 and the computer 2 are communicated online by a communication line after the system returns to the ground, logging data and depth record data are sent into the computer 3 for pseudo-and time-depth conversion, and 1 can be printed out according to the requirement: 200 or 1:50 log plot
Principle of operation of the detection tube 5
1. Natural gamma measurement
The natural gamma is used for measuring the natural radioactive intensity of the rock and the coal seam, a sodium iodide (NaI) scintillation crystal and a photomultiplier are used as a gamma detector, and the pulse generated by the photomultiplier is used for controlling a circuit to complete data acquisition and store the data into a RAM unit.
2. Selecting gamma measurements
The main difference between the selection of gamma and the common scattering gamma logging is that the selection of gamma measuring detectors is all provided with beryllium windows (Z=4) with low atomic numbers, and the crystal is very thin phi 30 mm by 2mm, the purpose is to measure the photoelectric effect of the interaction of gamma rays with rock and coal, and the photoelectric effect is in direct proportion to the 4 th power of the atomic number Z of a substance. Because Z of the main component of coal is less than or equal to 6 and the average effective atomic number Z of the rock is more than 13, the method can effectively divide coal beds and gangue. And the AM241 with 30 millicuries is used as a logging radioactive source, so that the energy is low, the radiation dose rate to human bodies is small, and the radiation source is easy to shield and carry. The channel measurement circuit is identical to the natural gamma circuit.
The instrument adopts time interval sampling, namely 1s sampling, and the detection pipe 5 is connected on the drill rod and moves outwards by one stroke and one stroke of the drilling machine. The moving process is subjected to two stages of acceleration and steady speed, and the moving speed is not constant, so that the distance between every two sampling points is unequal, and the deep transition is performed. If the drilling machine is required to operate every travel time as close as possible, namely the sampling point number M in one travel length is close, if the probe moving speed V is expressed by an M1 function, namely: v=f (m 1)
The sampling interval of each sampling point can be calculated by the method:
ΔH1＝(mo/m).f(m1-1).Δt
wherein: mo, m- -determination of speed and number of samples in one trip during logging
Δt- -sampling time
The sampling interval of each sampling point is obtained, and the application software can insert equidistant logging data for further data processing and compiling into a drawing.
The above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention.
Claims (4)
1. The underground drilling structure detector comprises a ground part and a computer, wherein the ground part is a charger and the computer, the underground part is a host, a detection tube and a detector, the computer is connected with the host through a communication cable, the charger is connected with the host through an electric wire cable, the underground drilling structure detector is characterized in that the host is connected with the detection tube through a first data line and is connected with the detector through a second data line, the structure of the detection tube comprises a first probe and a second probe, the first probe is internally provided with a gamma detector and a first circuit board, the second probe is internally provided with a voltage stabilizing protection circuit board, a natural gamma detector and a second circuit board, an external tube is arranged outside the second probe, a nickel-hydrogen battery pack is arranged in the external tube, the nickel-hydrogen battery pack is connected with the voltage stabilizing protection circuit board, the natural gamma detector and the second circuit board are integrally glued and sealed, the first probe and the second probe are all glued by SDL-1-24 vulcanized rubber, the second probe is internally provided with a data collector, the connection length of the first data line is less than or equal to 2m, and the connection length of the second data line is less than or equal to 4m.
2. The downhole borehole configuration probe of claim 1 wherein a RAM unit is disposed within the data collector.
3. The method for detecting the underground drilling structure is characterized by comprising the following steps of:
1) Assembling the detection tube according to claim 1, connecting the detection tube with a main machine through a first data line, connecting the detection tube with a detector through a second data line, connecting the assembled detection tube with a drill rod, and feeding the assembled detection tube into the hole bottom;
2) Switching on the power supply of the detection tube and the host, and carrying out initialization operation through keys of the host to enable the display interface to display in a countdown mode;
3) Removing a second data line connected with the detection tube, installing a 30 millicurie Ma241 radioactive source, and feeding the detection tube into the hole bottom;
4) After the display interface is adjusted, logging by a drill rod lifting detection pipe method;
5) After the measurement is completed, recording sampling times and depth record, taking out the detection tube from the orifice, detaching the radioactive source, putting the radioactive source into the source tank, and covering the source tank cover tightly;
6) The second data line for the probe tube is disassembled and connected with the probe tube, the first data line and the host machine, so as to perform secondary initialization operation;
7) After the display is finished, the power supply of the detection tube and the host computer can be turned off, and thus, the underground logging work is finished.
4. The method for detecting a downhole drilling structure according to claim 3, wherein the method for lifting the drill pipe in the step 4) is characterized in that the detection pipe and the drill pipe are connected and fed into the bottom of the hole, then the drill is used for connecting one stroke to move outwards, during the moving process, the detection pipe performs logging data acquisition, and simultaneously, the host computer records the logging depth through the depth finder; in the process of extracting the drill rod well logging, the deep control lamp is kept on, and the speed of the detection tube is increased to be less than or equal to 10cm/S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610139479.6A CN105626061B (en) | 2016-03-11 | 2016-03-11 | Underground borehole structure detector and detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610139479.6A CN105626061B (en) | 2016-03-11 | 2016-03-11 | Underground borehole structure detector and detection method |
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| Publication Number | Publication Date |
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| CN105626061A CN105626061A (en) | 2016-06-01 |
| CN105626061B true CN105626061B (en) | 2024-02-13 |
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| CN111781660B (en) * | 2020-07-13 | 2023-04-25 | 河北省水文工程地质勘查院 | Hydrogeology comprehensive investigation system and method for underground reservoir |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4939362A (en) * | 1988-11-28 | 1990-07-03 | Texaco Inc. | Borehole fluid density well logging means and method |
| CA2090394A1 (en) * | 1992-02-26 | 1993-08-27 | Michael Leonard Gartner | Gas hold up tool for use in cased well boreholes |
| GB0424895D0 (en) * | 2003-12-01 | 2004-12-15 | Schlumberger Holdings | Downhole fluid pumping apparatus and method |
| CN103967476A (en) * | 2014-04-25 | 2014-08-06 | 武汉长盛煤安科技有限公司 | Drilling geophysical prospecting advanced detecting device and method |
| CN204041056U (en) * | 2013-10-29 | 2014-12-24 | 西安科技大学 | A kind of mine down-hole bore detecting instrument |
| CN105275460A (en) * | 2015-10-16 | 2016-01-27 | 中国石油天然气集团公司 | FDT modular double-probe formation tester and test system |
| CN205445601U (en) * | 2016-03-11 | 2016-08-10 | 陕西多奇电子科技有限公司 | Detection instrument is constructed in drilling in pit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7059179B2 (en) * | 2001-09-28 | 2006-06-13 | Halliburton Energy Services, Inc. | Multi-probe pressure transient analysis for determination of horizontal permeability, anisotropy and skin in an earth formation |
-
2016
- 2016-03-11 CN CN201610139479.6A patent/CN105626061B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4939362A (en) * | 1988-11-28 | 1990-07-03 | Texaco Inc. | Borehole fluid density well logging means and method |
| CA2090394A1 (en) * | 1992-02-26 | 1993-08-27 | Michael Leonard Gartner | Gas hold up tool for use in cased well boreholes |
| GB0424895D0 (en) * | 2003-12-01 | 2004-12-15 | Schlumberger Holdings | Downhole fluid pumping apparatus and method |
| CN204041056U (en) * | 2013-10-29 | 2014-12-24 | 西安科技大学 | A kind of mine down-hole bore detecting instrument |
| CN103967476A (en) * | 2014-04-25 | 2014-08-06 | 武汉长盛煤安科技有限公司 | Drilling geophysical prospecting advanced detecting device and method |
| CN105275460A (en) * | 2015-10-16 | 2016-01-27 | 中国石油天然气集团公司 | FDT modular double-probe formation tester and test system |
| CN205445601U (en) * | 2016-03-11 | 2016-08-10 | 陕西多奇电子科技有限公司 | Detection instrument is constructed in drilling in pit |
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