CN112112592B - Conveying device and method for deep well measuring instrument - Google Patents

Conveying device and method for deep well measuring instrument Download PDF

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Publication number
CN112112592B
CN112112592B CN202011109946.3A CN202011109946A CN112112592B CN 112112592 B CN112112592 B CN 112112592B CN 202011109946 A CN202011109946 A CN 202011109946A CN 112112592 B CN112112592 B CN 112112592B
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China
Prior art keywords
drill bit
well
instrument
working cabin
measuring instrument
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CN202011109946.3A
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CN112112592A (en
Inventor
陈晨
刘昆岩
李曦桐
翟梁皓
朱颖
潘栋彬
钟秀平
沈国军
王亚斐
孟奕龙
李子涵
聂帅帅
马英瑞
刘祥
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Jilin University
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Jilin University
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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B29/00Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00Drill bits
    • E21B10/42Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
    • E21B10/43Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02Couplings; joints
    • E21B17/04Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/042Threaded
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B23/00Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
    • E21B23/14Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells for displacing a cable or cable-operated tool, e.g. for logging or perforating operations in deviated wells
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B4/00Drives for drilling, used in the borehole
    • E21B4/02Fluid rotary type drives

Abstract

The utility model discloses a conveying device and a method for a deep well measuring instrument, wherein the conveying device comprises a logging assembly or at least two logging assemblies, a drill rod, a screw drilling tool and a leading drill bit which are connected in series, the logging assembly consists of a reverse well drilling bit, an instrument working cabin and an instrument working cabin fixing device, and the method for conveying the underground measuring instrument comprises lowering and lifting. The rotary power of the leading drill bit is provided by the upper screw drilling tool, so that blocked rock blocks encountered in the lowering process are crushed, the rotation of an instrument working cabin in the lowering process is avoided, and smooth lowering is ensured; the underground measuring instrument is integrated in the instrument working cabin, so that a plurality of instrument working cabins can be installed at the same time, and simultaneous measurement is carried out at well sections with different depths; the upper part of each instrument working cabin fixing device is connected with a reverse well drill bit in a threaded manner, the whole conveying device is driven to slowly rotate through a drilling machine when the instrument working cabin fixing device is lifted, the drill bit slowly rotates, the collapse rock is cut and broken, and the instrument working cabin is guaranteed to be rapidly lifted.

Description

Conveying device and method for deep well measuring instrument
Technical Field
The utility model belongs to the field of geophysical exploration, and particularly relates to a deep well measuring instrument conveying device and method.
Background
The logging technology is widely applied to resource exploration and engineering exploration, is also called geophysical logging, and measures the geophysical characteristics such as electrochemical characteristics, conductive characteristics, acoustic characteristics, radioactivity and the like of an open hole well wall rock stratum through a measuring instrument, and belongs to one of application geophysical methods.
With the increase of drilling depth and the increase of logging requirements, a measuring instrument is required to measure in a deep well for a long time (3-5 years). The construction environment of high pressure, high temperature and complex formation composition in deep wells puts special demands on downhole instrument installation equipment. The safety and reliability of the downhole conveying device become important consideration for the stable operation of the logging instrument.
When the measuring instrument is put down into a deep well, accidents such as blocking and rubbing can occur in the lowering process due to the roughness of the hole wall or the complex condition in the hole, especially in the case of naked eyes. In the long-term working process of the underground measuring instrument, the stability of the borehole wall of the deep well is high in risk due to the complex and unpredictable factors of the geological structure, and the phenomenon of collapse and slump is easy to occur, so that the measuring instrument or other support pipe sections are easy to clamp in the well, and the whole set of measuring system instrument cannot be lifted.
Disclosure of Invention
The utility model aims to provide a deep well measuring instrument conveying device and method, which are used for solving the problems of difficult lifting and the like caused by falling blockage and collapse and falling blocks in the deep well working of a measuring instrument.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a deep well measurement instrument delivery device comprising: the well logging assembly or at least two well logging assemblies, a drill rod, a screw drilling tool and a leading drill bit which are connected in series, wherein the well logging assembly consists of a reverse well drilling bit, an instrument working cabin and an instrument working cabin fixing device, the reverse well drilling bit and the instrument working cabin fixing device are coaxially arranged and are communicated with each other internally, and the lower end of the reverse well drilling bit is in threaded connection with the upper end of the instrument working cabin fixing device; the underground measuring instrument is integrated in the instrument working cabin and is connected with a data processing center positioned on the ground through a cable; the instrument working cabin is fixed on the outer side wall of the instrument working cabin fixing device; the well logging assembly or at least two well logging assemblies connected in series are arranged between the drill rod and the screw rod drilling tool, the drill rod is in threaded connection with the upper end of the reverse well drilling bit close to the drill rod and is internally communicated, and the screw rod drilling tool is in threaded connection with the lower end of the instrument working cabin fixing device close to the screw rod drilling tool and is internally communicated; the leading drill bit and the screw drilling tool are coaxially arranged and are internally communicated, and the leading drill bit is in threaded connection below the screw drilling tool;
wherein the cutting face of the drill bit of the reverse well drill bit faces to the drill rod positioned at the upper part of the drill bit; the leading drill bit is provided with an upper drill bit cutting face and a lower drill bit cutting face which are respectively an upper cutting face and a lower cutting face, the two drill bit cutting faces face opposite to each other in direction, and the drill bit cutting face positioned above faces the screw drilling tool.
Further, threaded holes are formed in the upper end and the lower end of the instrument working cabin.
Further, the instrument working cabin fixing device is composed of an instrument working cabin fixing device body and fixing blocks arranged on the outer side wall of the instrument working cabin fixing device body, the instrument working cabin fixing device body is of a cylindrical structure with two open ends, and connecting threads are arranged at the two end parts of the instrument working cabin fixing device body; the screw holes are formed in the fixing blocks, the positions of the screw holes in the fixing blocks are opposite to those of the screw holes in the instrument working cabins, and the instrument working cabins to be installed are fixed on the instrument working cabin fixing device through bolts penetrating through the screw holes in the fixing blocks and the screw holes in the instrument working cabins.
Further, the well reversing drill bit is of an integrally formed structure and is composed of a well reversing drill bit body and cutting units which are uniformly distributed circumferentially around the central shaft of the well reversing drill bit body, connecting threads are arranged at two ends of the well reversing drill bit body, and a water gap is arranged between any two adjacent cutting units.
Further, the pilot bit is composed of a pilot bit body and cutting discs sleeved outside the pilot bit body, the pilot bit body is of an integrated structure, water gaps are reserved on the cutting discs, the number of the cutting discs is two, the two cutting discs are arranged up and down, the cutting face of the cutting disc located above is upward and is called an upper cutting face, and the cutting face of the cutting disc located below is downward and is called a lower cutting face.
The method for conveying the underground measuring instrument by using the deep well measuring instrument conveying device comprises the following steps:
firstly, assembling the deep well measuring instrument conveying device on the ground;
suspending the assembled deep well measuring instrument conveying device through a derrick, and lowering the deep well measuring instrument conveying device into a well hole; the method comprises the steps of opening a slurry pump, injecting slurry into a drill rod, enabling the slurry to flow through the interior of a deep well measuring instrument conveying device, enabling the slurry to flow out through a leading drill bit, and then returning to the ground from a gap between the deep well measuring instrument conveying device and a hole wall of a well hole, so as to complete positive circulation, thereby driving a screw drilling tool and the leading drill bit to rotate in a single action, and breaking plugs encountered in the process of lowering through a lower cutting face of the leading drill bit;
step three, in a mode of connecting a drill rod continuously, when the deep well measuring instrument conveying device is lowered to a designated measuring area, the lowering is stopped, a slurry pump is closed, at the moment, the underground measuring instrument in the instrument working cabin starts to work, and data measured by the underground measuring instrument are transmitted to a data processing center through a cable;
and fourthly, when the measurement is finished or an emergency situation occurs and the instrument working cabin needs to be lifted, clamping a drill rod through a chuck of a drilling machine positioned on the ground surface, driving the drill rod to further drive the whole deep well measuring instrument conveying device to rotate and pull out, at the moment, rotating the well reversing drill bit and the leading drill bit together, enabling the cutting face of the drill bit of the well reversing drill bit to rotationally crush the falling blocks and the collapse rock blocks of the wall of the upper portion, and enabling the upper cutting face of the leading drill bit to fracture the falling blocks and the collapse rock blocks of the lower portion of the well reversing drill bit to finish lifting.
Through the design scheme, the utility model has the following beneficial effects:
1. according to the deep well measuring instrument conveying device and method, the leading drill bit is arranged at the tail part of the whole conveying device, the rotary power is provided by the upper screw drilling tool, and the blocked rock blocks encountered in the lowering process are crushed, so that the rotation of an instrument working cabin in the lowering process is avoided, and the smooth lowering of the instrument working cabin is ensured;
2. the measuring instrument is integrated in the instrument working cabin and is arranged on the instrument working cabin fixing device, the instrument working cabin fixing device is connected with the upper device through threads, simultaneous installation of a plurality of instrument working cabins can be realized, simultaneous measurement is carried out at well sections with different depths, and measurement data are huge and accurate;
3. the upper part of each instrument working cabin fixing device is connected with a reverse well drill bit in a threaded manner, and the drilling machine at an orifice drives the whole deep well measuring instrument conveying device to rotate and pull up during lifting, so that the reverse well drill bit slowly rotates at the moment, the drill bit is used for cutting and crushing collapsed rock, and the instrument working cabin with the underground measuring instrument integrated inside is guaranteed to be rapidly lifted.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and constitute a part of this application, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a undue limitation of the utility model, and in which:
FIG. 1 is a schematic view showing a deep well measuring instrument conveying device in a downward movement;
FIG. 2 is a schematic illustration of a deep well measuring instrument transport device according to an embodiment of the present utility model;
FIG. 3 is a front view of a reverse well drill bit according to an embodiment of the present utility model;
FIG. 4 is an oblique view of a back-up bit according to an embodiment of the utility model;
FIG. 5 is a front view of a pilot bit according to an embodiment of the present utility model;
FIG. 6 is an oblique view of a pilot bit in an embodiment of the utility model;
FIG. 7 is a front view of an instrument pod holder according to an embodiment of the present utility model;
fig. 8 is an oblique view of the fixture of the instrument working chamber in the embodiment of the utility model.
The figures are marked as follows: 1-a derrick; 2-a drilling machine; 3-a slurry pump; 4-a data processing center; 5-wellbores; 6-a reverse well drill bit; 7-an instrument working cabin; 8-a cable; 9-a drill rod; 10-an instrument working cabin fixing device; 11-screw drilling tool; 12-leading a drill bit; 13-a fixed block; 601-a back-up bit body; 602 a cutting unit; 603-a nozzle; 1201—leading bit body; 1202-cutting disk.
Description of the embodiments
For a clearer understanding of the technical solutions, objects and effects of the present utility model, reference will now be made to the detailed description of embodiments of the present utility model taken in conjunction with the accompanying drawings, it being apparent that the embodiments described are some, but not all, embodiments of the present utility model. Well-known methods, procedures, flows, components and circuits have not been described in detail so as not to obscure the nature of the utility model. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. The utility model provides a deep well measuring instrument conveying device, which comprises: the well logging device comprises a well logging assembly or at least two well logging assemblies, a drill rod 9, a screw drilling tool 11 and a leading drill bit 12 which are connected in series, wherein the well logging assembly comprises a well reversing drill bit 6, an instrument working cabin 7 and an instrument working cabin fixing device 10, the well reversing drill bit 6 and the instrument working cabin fixing device 10 are coaxially arranged and are communicated with each other internally, and the lower end of the well reversing drill bit 6 is in threaded connection with the upper end of the instrument working cabin fixing device 10; the instrument working cabin 7 is internally integrated with a downhole measuring instrument, and the downhole measuring instrument is connected with the data processing center 4 positioned on the ground through a cable 8; the instrument working cabin 7 is fixed on the outer side wall of the instrument working cabin fixing device 10; the well logging assembly or at least two well logging assemblies connected in series are arranged between the drill rod 9 and the screw drilling tool 11, the drill rod 9 is in threaded connection with the upper end of the reverse well drill bit 6 close to the drill rod 9 and is internally communicated, and the screw drilling tool 11 is in threaded connection with the lower end of the instrument working cabin fixing device 10 close to the screw drilling tool 11 and is internally communicated; the pilot bit 12 and the screw drilling tool 11 are coaxially arranged and are internally communicated, and the pilot bit 12 is in threaded connection below the screw drilling tool 11;
wherein the cutting face of the reverse well drill bit 6 faces towards the drill rod 9 located at the upper part thereof; the pilot bit 12 has upper and lower bit cutting surfaces, respectively, which are directed in opposite directions, and the upper bit cutting surface is directed toward the screw tool 11.
The deep well measuring instrument conveying device can be applied to measurement of a measuring well section, and can also be used for simultaneous measurement of multiple well sections in well sections with different depths, and a well measuring assembly is adopted in the deep well measuring instrument conveying device when the deep well measuring instrument conveying device is applied to measurement of the measuring well section; the deep well measuring instrument conveying device adopts at least two logging assemblies connected in series when being applied to multi-well section measurement of different depths.
The following embodiments of the utility model are described with respect to a measurement well section:
as shown in fig. 1 and 2, the deep well measuring instrument conveying device comprises a back-well drill bit 6, an instrument working cabin 7, a drill rod 9, an instrument working cabin fixing device 10, a screw drill 11 and a leading drill bit 12, wherein the drill rod 9, the back-well drill bit 6, the instrument working cabin fixing device 10, the screw drill 11 and the leading drill bit 12 are sequentially connected in a threaded manner from top to bottom and are internally communicated.
In order to protect the measuring instrument, the underground measuring instrument is integrated in an instrument working cabin 7, the instrument working cabin 7 is a metal cabin body, an anti-corrosion layer is coated on the surface layer of the metal cabin body, threaded holes are formed in the upper end and the lower end of the instrument working cabin 7, and the instrument working cabin is conveniently fixed on an instrument working cabin fixing device 10.
As shown in fig. 7 and 8, the instrument working chamber fixing device 10 is composed of an instrument working chamber fixing device body and fixing blocks 13 arranged on the outer side wall of the instrument working chamber fixing device body, wherein the instrument working chamber fixing device body is of a cylindrical structure with two open ends, and the two end parts of the instrument working chamber fixing device body are provided with connecting threads; the fixing blocks 13 are provided with threaded holes, the instrument working cabins 7 are placed between the fixing blocks 13 which are arranged up and down, the positions of the threaded holes on the fixing blocks 13 are opposite to the positions of the threaded holes on the instrument working cabins 7, and the instrument working cabins 7 to be installed are fixed on the instrument working cabin fixing device 10 by penetrating the threaded holes on the fixing blocks 13 and the threaded holes on the instrument working cabins 7 through bolts.
The cutting face of the drill bit of the inverted well drill bit 6 faces the drill rod 9 positioned at the upper part of the inverted well drill bit, the drill rod 9 is clamped by the chuck of the drilling machine 2 positioned on the ground surface to drive the drill rod 9, and then the inverted well drill bit 6 is driven to rotate, so that the rotary lifting is realized.
As shown in fig. 3 and 4, the back-well drill bit 6 is of an integral structure, the back-well drill bit 6 is composed of a back-well drill bit body 601 and cutting units 602 uniformly distributed circumferentially around a central axis of the back-well drill bit body 601, connecting threads are provided at two ends of the back-well drill bit body 601, and a water gap 603 is provided between any two adjacent cutting units 602.
The screw drilling tool 11 is driven by positive circulation of a drilling fluid, i.e. mud in the present utility model, through the screw drilling tool 11.
The upper end of the pilot bit 12 is provided with threads, the pilot bit 12 is connected below the screw drilling tool 11 through threads, the pilot bit 12 is provided with an upper bit cutting surface and a lower bit cutting surface, the pilot bit 12 is driven by the screw drilling tool 11 to realize single action, the screw drilling tool 11 is specifically a downhole power drilling tool, the pilot bit 12 is driven to rotate under the well by means of drilling fluid driving and is not driven by the drilling machine 2, therefore, the upper square drill rod 9 of the screw drilling tool 11 does not rotate, and the lower pilot bit 12 realizes single action rotation.
As shown in fig. 5 and 6, the pilot bit 12 is composed of a pilot bit body 1201 and cutting discs 1202 sleeved outside the pilot bit body 1201, the pilot bit body 1201 is of an integral structure, water ports are reserved on the cutting discs 1202, the number of the cutting discs 1202 is two, the two cutting discs 1202 are arranged up and down, the cutting surface of the cutting disc 1202 located above faces upwards and is called an upper cutting surface, and the cutting surface of the cutting disc 1202 located below faces downwards and is called a lower cutting surface.
The method for conveying the underground measuring instrument by adopting the deep well measuring instrument conveying device comprises the following specific processes:
the lowering stage of the deep well measuring instrument conveying device:
assembling a deep well measuring instrument conveying device on the ground, installing an instrument working cabin 7 between fixing blocks 13 of an instrument working cabin fixing device 10, connecting the instrument working cabin 7 and the fixing blocks together through bolts, connecting one end of a well reversing drill bit 6 to a drill rod 9 through threads, connecting the other end of the well reversing drill bit 6 to the instrument working cabin fixing device 10 through threads, and connecting one end, away from the well reversing drill bit 6, of the instrument working cabin fixing device 10 to a screw drilling tool 11 through threads; one end of the screw drilling tool 11, which is far away from the instrument working cabin fixing device 10, is in threaded connection with the pilot bit 12;
hanging an installed deep well measuring instrument conveying device through a derrick 1, starting to descend, opening a slurry pump 3, driving slurry circulation through the slurry pump 3, injecting slurry into a drill rod 9, enabling the slurry to flow through the deep well measuring instrument conveying device, returning the slurry to the ground from a gap between the deep well measuring instrument conveying device and a hole wall of a well hole 5 after flowing out through a pilot bit 12, completing positive circulation, driving a screw drilling tool 11 and the pilot bit 12 to rotate in a single action, and crushing plugs encountered in the descending process through a lower cutting surface of the pilot bit 12, so that smooth descending is ensured;
the deep well measuring instrument conveying device is continuously lowered in a mode of connecting the drill rod 9 continuously, when the instrument working cabin 7 is lowered to a specified measuring area, the lowering is stopped, the slurry pump 3 is closed, the slurry stops circulating, at the moment, the underground measuring instrument in the instrument working cabin 7 starts to work, and data measured by the underground measuring instrument are transmitted to the data processing center 4 through the cable 8 for analysis.
Lifting stage of deep well measuring instrument conveying device:
when the measurement is finished or an unreliability factor is met, the instrument working cabin 7 is lifted, the drilling machine 2 positioned at the orifice drives the whole deep well measuring instrument conveying device to rotate and pull out, at the moment, the well reversing drill bit 6 and the leading drill bit 12 rotate together, the cutting face of the drill bit of the well reversing drill bit 6 rotates to crush the falling blocks and the collapse rock blocks of the wall of the upper part, and the upper cutting face of the leading drill bit 12 crushes the falling blocks and the collapse rock blocks of the lower part of the well reversing drill bit 6 to jointly ensure smooth lifting.
Further, since the slurry is used to drive the screw drilling tool 11 without carrying rock powder, the slurry can use clean water, and the screw drilling tool 11 and the pilot bit 12 rotate in a single action in the lowering process, and the upper device does not rotate, so that the instrument is protected.
Further, the reverse well drill bit 6 is provided with a water gap 603, and the cable 8 passes through the water gap 603 of the reverse well drill bit 6 to play a limiting role, so that the cable 8 is prevented from winding the drill rod 9.

Claims (1)

1. The method for conveying the underground measuring instrument by using the deep well measuring instrument conveying device is characterized in that the deep well measuring instrument conveying device adopted by the method comprises the following steps: the well logging device comprises a well logging assembly or at least two well logging assemblies, a drill rod (9), a screw drilling tool (11) and a leading drill bit (12) which are connected in series, wherein the well logging assembly consists of a reverse well drill bit (6), an instrument working cabin (7) and an instrument working cabin fixing device (10), the reverse well drill bit (6) and the instrument working cabin fixing device (10) are coaxially arranged and are internally communicated, and the lower end of the reverse well drill bit (6) is in threaded connection with the upper end of the instrument working cabin fixing device (10); the underground measuring instrument is integrated in the instrument working cabin (7) and is connected with a data processing center (4) positioned on the ground through a cable (8); the instrument working cabin (7) is fixed on the outer side wall of the instrument working cabin fixing device (10); the well logging assembly or at least two well logging assemblies connected in series are arranged between the drill rod (9) and the screw drilling tool (11), the drill rod (9) is in threaded connection with the upper end of the reverse well drilling bit (6) close to the drill rod and is internally communicated, and the screw drilling tool (11) is in threaded connection with the lower end of the instrument working cabin fixing device (10) close to the screw drilling tool and is internally communicated; the pilot drill (12) and the screw drilling tool (11) are coaxially arranged and are internally communicated, and the pilot drill (12) is in threaded connection below the screw drilling tool (11); wherein the cutting face of the drill bit (6) of the reverse well is towards the drill rod (9) positioned at the upper part of the drill bit; the leading drill bit (12) is provided with an upper drill bit cutting face and a lower drill bit cutting face which are respectively an upper cutting face and a lower cutting face, the two drill bit cutting faces face opposite to each other in the direction, and the upper drill bit cutting face faces the screw drilling tool (11);
the method comprises the following steps:
firstly, assembling the deep well measuring instrument conveying device on the ground;
suspending the assembled deep well measuring instrument conveying device through a derrick (1), and lowering the deep well measuring instrument conveying device into a well hole (5); the method comprises the steps of opening a slurry pump (3), injecting slurry into a drill rod (9), enabling the slurry to flow through the interior of a deep well measuring instrument conveying device, enabling the slurry to flow out through a pilot drill bit (12), and then returning to the ground from a hole wall gap between the deep well measuring instrument conveying device and a well hole (5), so as to complete positive circulation, and driving a screw drilling tool (11) and the pilot drill bit (12) to rotate in a single action mode, and crushing a plug in the process of lowering through a lower cutting face of the pilot drill bit (12);
step three, the deep well measuring instrument conveying device is continuously lowered in a mode of connecting the drill rod (9),
when the instrument working cabin (7) is lowered to a designated measuring area, stopping lowering, closing the slurry pump (3), starting the operation of the underground measuring instrument in the instrument working cabin (7), and transmitting the data measured by the underground measuring instrument to the data processing center (4) through the cable (8);
step four, when the measurement is finished or an emergency situation is met and the instrument working cabin (7) needs to be lifted, a drill rod (9) is clamped through a chuck of a drilling machine (2) positioned on the ground surface, the drill rod (9) is driven to further drive a conveying device of the whole deep well measuring instrument to rotate and pull out, at the moment, the inverted well drill bit (6) and the front guide drill bit (12) rotate together, the cutting face of the drill bit of the inverted well drill bit (6) rotates to crush the falling blocks and the collapse rock blocks of the wall of the upper portion, and the upper cutting face of the front guide drill bit (12) crushes the falling blocks and the collapse rock blocks of the lower portion of the inverted well drill bit (6) to finish lifting.
CN202011109946.3A 2020-10-16 2020-10-16 Conveying device and method for deep well measuring instrument Active CN112112592B (en)

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CN112832831B (en) * 2021-01-05 2022-12-02 湘潭大学 Deep well excavation safety engineering management is prevented collapsing and is used protection machanism
CN114293939B (en) * 2021-12-29 2023-09-12 河北永明地质工程机械有限公司 Core drilling machine

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