CN217481212U - Be used for compound guide coal bed gas drilling equipment in underground coal reservoir - Google Patents

Abstract

The utility model relates to a coal bed gas exploitation technical field, and a composite guide coal bed gas drilling equipment for underground coal reservoir, including the drill collar, mill awl and sensor assembly, sensor assembly sets up between drill collar and the mill awl, the ring channel has been seted up to the lateral wall of drill collar near the one end of milling the awl, the cell wall fixedly connected with a plurality of support columns of ring channel, every support column all is connected with the mill awl, sensor assembly's outside activity cover is equipped with the lag, the lower extreme of lag has been seted up a plurality ofly and support column assorted recess, the tank bottom of every recess all with the column wall sliding connection of homonymy support column. This application can enclose the fender protection to sensor assembly when drilling well during operation, when needs examine, with sensor assembly spill can, greatly reduced in the drilling process sensor assembly damage's possibility, the complicated operating mode when being applicable to the drilling.

Description

Be used for compound guide coal bed gas drilling equipment in underground coal reservoir

Technical Field

The application relates to the technical field of coal bed gas exploitation, in particular to a composite pilot coal bed gas drilling device for an underground coal reservoir.

Background

Coal bed gas is a clean and efficient energy source, plays an important role in controlling mine disasters and reducing environmental pollution, and a drilling process is called as a sidetrack horizontal well during drilling, wherein sidetrack is a process of enabling a drilling track of a drill bit to deviate from an original well track according to a preset design by using a special sidetrack tool on the basis of the original well track (a vertical well, a directional well and a horizontal well) for special process requirements.

Patent publication No. CN210033281U discloses a composite pilot coalbed methane drilling device and a drilling well for underground coal reservoirs, wherein the device comprises drilling equipment for drilling and a whipstock arranged in a vertical well; the tilter is fixed at the bottom of the straight well through the tail pipe, and the tilter is provided with an inclined surface to guide the drilling equipment to the corresponding angle of the inclined surface of the tilter so as to drill the inclined well; wherein a sensor assembly is arranged at the joint between the drill collar and the milling cone; the composite pilot coalbed methane drilling device for the underground coal reservoir has the advantages that the drilling process can be detected through the sensor assembly, the milling cone does not need to be taken out frequently, the use efficiency is high, in the actual use process, due to the fact that soil materials generated in the drilling process and the complex environment in the drilling process easily damage the sensor assembly, the detection in the drilling process is affected, and the use effect is poor.

SUMMERY OF THE UTILITY MODEL

The purpose of this application is in order to solve among the prior art because the soil material that produces during the well drilling to and the complex environment during the well drilling, easily cause the damage to the sensor subassembly, the detection of influence when to the well drilling, the relatively poor problem of result of use, and the composite guide coal bed gas drilling equipment who provides for underground coal reservoir.

In order to achieve the purpose, the following technical scheme is adopted in the application:

the utility model provides a be used for compound guide coal bed gas drilling equipment in underground coal reservoir bed, includes drill collar, mills awl and sensor module, sensor module sets up between drill collar and the mill awl, the lateral wall of drill collar is close to the one end of milling the awl has seted up the ring channel, the cell wall fixedly connected with a plurality of support columns of ring channel, every the support column all is connected with the mill awl, sensor module's outside activity cover is equipped with the lag, the lower extreme of lag seted up a plurality ofly with support column assorted recess, every the tank bottom of recess all with the column wall sliding connection of homonymy support column, every all fix jointly between the tank bottom of recess and the mill awl and be equipped with the spring, the lag is connected with the absorption telescopic machanism jointly with the drill collar.

By adopting the technical scheme, the sensor assembly can be protected by surrounding and blocking when the well is drilled, and the sensor assembly is leaked when the sensor assembly is required to be detected, so that the possibility of damage to the sensor assembly in the well drilling process is greatly reduced.

Preferably, adsorb telescopic machanism including fixed a plurality of iron plates that set up in lag inner wall upper end, the vertical portion cell wall of ring channel seted up a plurality ofly with iron plate assorted bar groove, every the iron plate all is located the inside in homonymy bar groove and slides the setting, every the mounting groove has all been seted up to the upside cell wall in bar groove, every the equal fixedly connected with electro-magnet of cell wall in mounting groove.

By adopting the technical scheme, the electromagnetic adsorption is realized, a complex driving mechanism is not required to be arranged, and the using effect is good.

Preferably, a plurality of slots matched with the support columns are formed in the end face of the milling cone, and mounting bolts are connected between the slot walls of the slots and the column walls of the support columns on the same side through common threads.

By adopting the technical scheme, the milling cone and the support columns can be assembled and fixed conveniently.

Preferably, the axis of the drill collar is provided with a through hole, the wall of each mounting groove is provided with a wiring hole, and each wiring hole is communicated with the through hole.

Adopt above-mentioned technical scheme, through leading to the line hole, the sensor module's of can being convenient for cable is connected with external equipment, and through walking the line hole, the cable and the external connection of the electro-magnet of can being convenient for walk the line convenience.

Preferably, the groove wall of each strip-shaped groove is fixedly connected with a magnetic shielding film, and the side wall of each magnetic shielding film is provided with a through hole matched with the electromagnet.

By adopting the technical scheme, the electromagnetic adsorption can be ensured to be normal through the magnetic shielding film, and the influence of the electromagnetic adsorption on other components is reduced.

Preferably, the side wall of the drill collar is fixedly sleeved with an annular cover matched with the annular groove, and the annular cover is movably connected with the protective sleeve.

Adopt above-mentioned technical scheme, can protect the outside of ring channel, prevent that the inside normal of influence lag that influences of soil charge card income ring channel from shifting up.

Compared with the prior art, the application provides a be used for compound guide coal bed gas drilling equipment of underground coal reservoir, possesses following beneficial effect:

1. this be used for compound guide coal bed gas drilling equipment of underground coal reservoir, drill collar through being equipped with, mill mutually supporting of awl and sensor module, can be used for coal bed gas drilling to use, through the ring channel of seting up, a plurality of support columns, the lag, mutually supporting of a plurality of springs and absorption telescopic machanism, can be at the drilling during operation, enclose the fender protection to the sensor module, when needs detect, with sensor module spill can, through this kind of setting, can greatly reduced the possibility of sensor module damage at the drilling in-process.

2. This be used for compound guide coal bed gas drilling equipment in underground coal reservoir, through a plurality of construction bolts that are equipped with, the equipment between support column and the milling cone of can being convenient for.

The part that does not relate to among the device all is the same with prior art or can adopt prior art to realize, and this application can enclose the fender protection to the sensor subassembly when drilling work, when needs examine, with the sensor subassembly spill can, greatly reduced in the drilling process sensor subassembly damage's possibility, the complicated operating mode when being applicable to the drilling.

Drawings

Fig. 1 is a schematic structural diagram of a composite pilot coalbed methane drilling device for an underground coal reservoir according to the present application;

FIG. 2 is an enlarged view of the portion A in FIG. 1;

FIG. 3 is an enlarged view of the portion B in FIG. 1;

fig. 4 is a schematic bottom view of the protective cover of fig. 1.

In the figure: 1. a drill collar; 2. milling a cone; 3. a sensor assembly; 4. a support pillar; 5. a protective sleeve; 6. a spring; 7. an iron block; 8. an electromagnet; 9. installing a bolt; 10. a through hole; 11. a wiring hole; 12. a magnetic shielding film; 13. an annular shroud.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

Referring to fig. 1-4, a composite pilot coalbed methane drilling device for an underground coal reservoir comprises a drill collar 1, a milling cone 2 and a sensor assembly 3, wherein the sensor assembly 3 is arranged between the drill collar 1 and the milling cone 2, one end of the outer side wall of the drill collar 1, which is close to the milling cone 2, is provided with an annular groove, the groove wall of the annular groove is fixedly connected with a plurality of supporting columns 4, each supporting column 4 is connected with the milling cone 2, the outer side of the sensor assembly 3 is movably sleeved with a protecting sleeve 5, the lower end of the protecting sleeve 5 is provided with a plurality of grooves matched with the supporting columns 4, the groove bottom of each groove is slidably connected with the column wall of the supporting column 4 at the same side, a spring 6 is fixedly arranged between the groove bottom of each groove and the milling cone 2, and the protecting sleeve 5 and the drill collar 1 are connected with an adsorption telescopic mechanism.

Adsorb telescopic machanism including fixed a plurality of iron plates 7 that set up in lag 5 inner wall upper end, a plurality of and iron plate 7 assorted bar grooves have been seted up to the vertical portion cell wall of ring channel, every iron plate 7 all is located the inside in homonymy bar groove and slides the setting, the mounting groove has all been seted up to the upside cell wall in every bar groove, the equal fixedly connected with electro-magnet 8 of cell wall in every mounting groove, detect the messenger through sensor module 3 in needs, a plurality of electro-magnet 8 simultaneous circular telegram work, can produce magnetic attraction, can adsorb the iron plate 7 that corresponds this moment and move up, thereby can drive lag 5 and move up and spill sensor module 3, adsorb through the electromagnetism, need not to set up complicated actuating mechanism, excellent in use effect.

The terminal surface of the milling cone 2 is provided with a plurality of slots matched with the support columns 4, the common screw thread connection between the slot wall of each slot and the column wall of the support column 4 at the same side is provided with a mounting bolt 9, and the milling cone 2 and the support columns 4 can be assembled and fixed conveniently through the mounting bolt 9.

The axis of drill collar 1 has been seted up and has been led hole 10, and the cell wall of every mounting groove has all been seted up and has been walked line hole 11, and every is walked line hole 11 and all is linked together the setting with leading to the line hole 10, through leading to the line hole 10, can be convenient for sensor module 3's cable and external equipment be connected, and through walking line hole 11, can be convenient for electro-magnet 8's cable and external connection, walk the line convenience.

The equal fixedly connected with magnetism shielding membrane 12 of cell wall in every BAR shape groove, the lateral wall of every magnetism shielding membrane 12 all seted up with 8 assorted through-holes of electro-magnet, through magnetism shielding membrane 12, can ensure that the electromagnetism adsorbs normally, reduces the influence of electromagnetism suction to other components.

The annular cover 13 matched with the annular groove is fixedly sleeved on the side wall of the drill collar 1, the annular cover 13 is movably connected with the protective sleeve 5, the outer side of the annular groove can be protected through the annular cover 13, and soil materials are prevented from being clamped into the annular groove to influence the normal upward movement of the protective sleeve 5.

In this application, during the use, a plurality of support columns 4 of drill collar 1 cooperation, can make drill collar 1 and mill and bore stable connection between 2, mill 2 work of awl can drill a well, when needs carry out down-hole environment detection through sensor module 3, 8 simultaneous circular telegrams of a plurality of electro-magnets work, can produce magnetic attraction, can adsorb corresponding iron plate 7 and move up this moment, thereby can drive lag 5 to move up and spill sensor module 3, can carry out environment detection through sensor module 3 this moment, detect and accomplish the back, 8 outage of a plurality of electro-magnets, this moment under the self action of gravity of spring 6 and lag 5, lag 5 moves down fast and resets, thereby can continue to enclose fender protection to sensor module 3, then continue to drill a well can.

The above description is only for the preferred embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art should be considered to be within the scope of the present application, and all equivalent substitutions and changes according to the technical solutions and the inventive concepts of the present application should be covered by the scope of the present application.

Claims (6)

1. A composite pilot coal bed methane drilling device for an underground coal reservoir comprises a drill collar (1), a milling cone (2) and a sensor assembly (3), and is characterized in that the sensor assembly (3) is arranged between the drill collar (1) and the milling cone (2), an annular groove is formed in one end, close to the milling cone (2), of the outer side wall of the drill collar (1), a plurality of supporting columns (4) are fixedly connected to the groove wall of the annular groove, each supporting column (4) is connected with the milling cone (2), a protecting sleeve (5) is movably sleeved on the outer side of the sensor assembly (3), a plurality of grooves matched with the supporting columns (4) are formed in the lower end of the protecting sleeve (5), the groove bottom of each groove is in sliding connection with the column wall of the same side supporting column (4), a spring (6) is fixedly arranged between the groove bottom of each groove and the milling cone (2) together, the protective sleeve (5) and the drill collar (1) are connected with an adsorption telescopic mechanism together.

2. The composite pilot coal bed methane drilling device for the underground coal reservoir is characterized in that the adsorption telescopic mechanism comprises a plurality of iron blocks (7) fixedly arranged at the upper end of the inner wall of the protective sleeve (5), a plurality of strip-shaped grooves matched with the iron blocks (7) are formed in the vertical groove wall of the annular groove, each iron block (7) is located in the inner sliding arrangement of the same-side strip-shaped groove, an installation groove is formed in the upper groove wall of each strip-shaped groove, and an electromagnet (8) is fixedly connected to the groove wall of each installation groove.

3. The composite pilot coal bed gas drilling device for the underground coal reservoir as claimed in claim 1, wherein the end face of the milling cone (2) is provided with a plurality of slots matched with the supporting columns (4), and a mounting bolt (9) is in common threaded connection between the slot wall of each slot and the column wall of the supporting column (4) on the same side.

4. The composite pilot coal bed gas drilling device for the underground coal reservoir as claimed in claim 2, wherein the axis of the drill collar (1) is provided with a through hole (10), the wall of each mounting groove is provided with a wire hole (11), and each wire hole (11) is communicated with the through hole (10).

5. The composite pilot coal bed gas drilling device for the underground coal reservoir as claimed in claim 2, wherein a magnetic shielding film (12) is fixedly connected to the groove wall of each strip-shaped groove, and a through hole matched with the electromagnet (8) is formed in the side wall of each magnetic shielding film (12).

6. The composite pilot coalbed methane drilling device for the underground coal reservoir as claimed in claim 1, wherein an annular cover (13) matched with the annular groove is fixedly sleeved on the side wall of the drill collar (1), and the annular cover (13) is movably connected with the protective sleeve (5).

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