CN218376332U - Sleeve vehicle-mounted drilling machine - Google Patents
Sleeve vehicle-mounted drilling machine Download PDFInfo
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- CN218376332U CN218376332U CN202222231876.XU CN202222231876U CN218376332U CN 218376332 U CN218376332 U CN 218376332U CN 202222231876 U CN202222231876 U CN 202222231876U CN 218376332 U CN218376332 U CN 218376332U
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- drill rod
- drill
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Abstract
The application discloses sleeve pipe truck-mounted drilling machine includes: the device comprises a carrying vehicle, a drilling mast, a pitching driving mechanism, a power head, a drill rod, a power head lifting driving device, a sleeve rotor, a sleeve lifting device, a circulating medium supply device and a compressed gas supply device. When the drill bit is driven to rotate and move, the sleeve is driven to rotate through the sleeve rotor, and the sleeve rotor is controlled to move up and down through the sleeve lifting device, namely, the construction efficiency can be effectively improved through the mode that the drill rod and the sleeve drill at the same time. In the drilling process, the circulating medium is conveyed to a position between the outer wall of the drill rod and the inner wall of the casing from top to bottom by the circulating medium supply device, compressed gas is introduced into the drill rod through the compressed gas supply device, the circulating medium flows upwards in the drill rod under the action of a balance force to form negative pressure on a well bottom, the circulating medium at the well bottom flows to the upper end of the drill rod from the well bottom through an inner cavity of the drill rod, and the circulating medium is prevented from flowing away along a rock stratum gap under positive pressure, so that the drilling efficiency is improved.
Description
Technical Field
The application relates to the field of engineering machinery, in particular to a sleeve truck-mounted drilling machine.
Background
When coal bed gas is mined, a surface casing well is usually required to be firstly drilled through a drilling machine, rock and soil are crushed through the rotation of a drill bit at the end part of a drill rod, slurry is pressurized by a slurry pump and is pressed into the bottom of a well through the inner cavity of the drill rod, and the slurry flows out through the drill bit to drive the soil, the crushed stone and the like to return to the ground through a gap between the drill rod and the wall of the well. After drilling, a casing is put into the well, the volume between the outer wall of the casing and the wall of the well is calculated, cement is injected into the casing, the cement returns to the ground through a gap between the casing and the wall of the well by pressing the cement downwards, and after the cement is solidified, a production well, namely a gas production well, is drilled.
The construction mode has the problems of long production period, high construction cost and the like, and complex strata such as a goaf, a water-bearing stratum, a caving area, a karst cave, loose strata, poor stability of a hole wall, difficult drilling and the like are frequently encountered in the drilling process, under the condition, slurry injected by the slurry pump flows away along with the seams of the strata, so that fragments generated by drilling cannot return to the ground, and further normal drilling cannot be carried out.
SUMMERY OF THE UTILITY MODEL
The application aims at providing a sleeve pipe truck-mounted drilling machine, which can effectively improve the construction efficiency.
In order to solve the technical problem, the application provides the following technical scheme:
a casing truck drill, comprising: the device comprises a carrier vehicle, a drilling mast, a pitching driving mechanism, a power head, a drill rod, a power head lifting driving device, a sleeve rotor, a sleeve lifting device, a circulating medium supply device and a compressed gas supply device;
the bottom end of the drilling mast is rotatably connected to the carrier vehicle, the pitching driving mechanism is used for driving the drilling mast to rotate, the drill rod is connected to the power head, the power head is used for controlling the drill rod to rotate, the power head lifting driving device is used for controlling the power head to move up and down along the drilling mast, the sleeve pipe lifting device is used for controlling the sleeve pipe rotor to move up and down, and the sleeve pipe rotor is used for driving a sleeve pipe to rotate;
the circulating medium supply device is used for conveying a circulating medium to a position between the outer wall of the drill rod and the inner wall of the casing from top to bottom, the compressed gas supply device is used for introducing compressed gas into the drill rod, and the circulating medium flows out of the upper end of the drill rod through the inner cavity of the drill rod after flowing to the bottom of the well.
Preferably, the power head lifting driving device comprises a hydraulic oil cylinder and a rope, the hydraulic oil cylinder is vertically arranged at the upper end of the drill mast, a pulley is arranged at the telescopic end of the hydraulic oil cylinder, one end of the rope is fixed on one side of the drill mast, and the other end of the rope bypasses the pulley to be connected with the power head.
Preferably, the drilling mast further comprises a load guy rope, one end of the load guy rope is connected with the upper part of the drilling mast, and the other end of the load guy rope is connected with one end, far away from the bottom end of the drilling mast, of the carrying vehicle.
Preferably, the casing lifting device comprises a lifting oil cylinder, and the telescopic end of the lifting oil cylinder is connected with the casing rotor.
Preferably, the drilling rod drilling device further comprises a switching control device connected with the circulating medium supply device, the switching control device is used for controlling the circulating medium supply device to convey the circulating medium into the drilling rod in a pressurized mode, and the circulating medium flows out from the position between the outer wall of the drilling rod and the inner wall of the casing from bottom to top.
Preferably, the drilling mast comprises a drilling mast inclination angle control device connected with the pitching driving mechanism, and the drilling mast inclination angle control device is used for adjusting an included angle between the drilling mast and the ground through the pitching driving mechanism.
Compared with the prior art, the technical scheme has the following advantages:
the application provides a sleeve pipe truck-mounted drill includes: the device comprises a carrier vehicle, a drill mast, a pitching driving mechanism, a power head, a drill rod, a power head lifting driving device, a sleeve rotor, a sleeve lifting device, a circulating medium supply device and a compressed gas supply device. When the drill bit is driven to rotate and move, the sleeve is driven to rotate by the sleeve rotor, and the sleeve rotor is controlled to move up and down by the sleeve lifting device, namely, the construction efficiency can be effectively improved by a mode that the drill rod and the sleeve drill at the same time. During drilling, the circulating medium is conveyed to a position between the outer wall of the drill rod and the inner wall of the casing from top to bottom by the circulating medium supply device, compressed gas is introduced into the drill rod through the compressed gas supply device, the circulating medium flows upwards in the drill rod under the action of a balance force to form negative pressure on a well bottom, the circulating medium at the well bottom flows to the upper end of the drill rod from the well bottom through an inner cavity of the drill rod, the circulating medium can form adsorption force on drilling cuttings and the like at the well bottom and flows back to the ground with impurities such as drilling cuttings and the like, and the circulating medium is prevented from flowing away along gaps of rock strata under positive pressure, so that the drilling efficiency is improved, and safety accidents are prevented.
Drawings
In order to more clearly illustrate the technical solutions in the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a casing truck-mounted drilling rig provided in accordance with an embodiment of the present application;
FIG. 2 is a schematic view of the drill mast in an erect condition;
FIG. 3 is a schematic view of the structure with the driller's cabin removed;
FIG. 4 is a schematic diagram of the operating principle of the positive pressure positive cycle;
fig. 5 is a schematic view of the working principle of negative pressure reverse circulation.
The reference numbers are as follows:
the device comprises a carrier vehicle, a drill mast 2, a rope 3, a power head 4, a power system 5, a hydraulic system 6, a heat dissipation system 7, a supporting oil cylinder 8, a high-pressure manifold 9, a pitch driving mechanism 10, a rear support 11, a driller room 12, an electrical system 13, an operation table 14, an overhead traveling crane 15, a hydraulic oil cylinder 16, a casing rotor 17, a telescopic leg 18, a hydraulic oil tank 19, a load tightening rope 20, a compensation oil cylinder 21, a casing lifting device 22, a pressing pulley 23, a drill rod 24, a drill rod inner cavity 241, a drill rod outer cavity 242, a compressed gas 243, a casing 25 and a stratum 26.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings.
In the following description, specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of implementation in many different ways than those herein set forth and of similar import to those skilled in the art without departing from the spirit and scope of this application. The present application is therefore not limited to the specific embodiments disclosed below.
Referring to fig. 1 to 5, fig. 1 is a schematic structural diagram of a casing truck-mounted drilling rig according to an embodiment of the present disclosure; FIG. 2 is a schematic view of the drill mast in an erect condition; FIG. 3 is a schematic view of the structure with the driller's cabin removed; FIG. 4 is a schematic diagram of the operating principle of the positive pressure positive cycle; fig. 5 is a schematic view of the working principle of negative pressure reverse circulation.
A particular embodiment of the present application provides a casing truck-mounted drilling rig, comprising: the device comprises a carrier vehicle 1, a drill mast 2, a pitching driving mechanism 10, a power head 4, a drill rod 24, a power head lifting driving device, a sleeve rotor 17, a sleeve lifting device 22, a circulating medium supply device and a compressed gas supply device; wherein the bottom end of the drilling mast 2 is rotatably connected on the carrying vehicle 1, besides the carrying vehicle 1, the transportation can also be realized by adopting a pulling type or a module disassembly and assembly type, the power head 4 is connected on the drilling mast 2 in a sliding way, the drill rod 24 is connected on the power head 4, and the drill bit is connected below the power head 4. During drilling construction, the pitching driving mechanism 10 can drive the drilling mast 2 to rotate so as to adjust the drilling mast 2 in a horizontal state to a vertical state, the power head 4 is used for controlling the drill rod 24 to rotate so as to drive the drill bit to rotate, and the power head lifting driving device is used for controlling the power head 4 to move up and down along the drilling mast 2; the efficiency of construction can be effectively improved by driving the casing rotator 17 to rotate the casing 25 while driving the drill bit to rotate and move, and controlling the casing rotator 17 to move up and down by the casing elevating device 22, that is, by the way the drill pipe 24 and the casing 25 are drilled simultaneously. In the drilling process, a circulating medium is conveyed to a position between the outer wall of the drill rod 24 and the inner wall of the casing 25 from top to bottom by a circulating medium supply device, the circulating medium flows to the bottom of the well under the action of gravity and flows into the inner cavity 241 of the drill rod, wherein the circulating medium can be one or more of water, air and mud, according to the liquid level balance principle, under the condition of no external force, the liquid level of the inner cavity 241 of the drill rod is equal to the liquid level of the outer cavity 242 of the drill rod, at the moment, compressed gas 243 is introduced into the drill rod through the compressed gas supply device, the density of drilling fluid at the upper end of the inner cavity 241 of the drill rod is reduced, the volume of the inner cavity 241 of the drill rod is unchanged, according to the mass m = rho gv (rho is density, g is a constant, and v is a volume), the mass is correspondingly reduced, the liquid level balance is broken, under the action of a balance force, the circulating medium flows upwards in the drill rod 24, negative pressure is formed on the bottom of the well, the circulating medium flows to the upper end of the drill rod 24 from the bottom of the inner cavity 241 of the drill rod, the bottom of the circulating medium is in a reverse circulation mode, the circulating medium can form an adsorption force on the negative pressure on the drill cuttings and the ground, impurities such as to flow back, and the drilling gap along the formation is avoided, and the drilling seam is prevented, and the drilling accident is prevented.
In some embodiments, the circulation medium circulation system further comprises a switching control device connected to the circulation medium supply device, the switching control device is used for controlling the circulation medium supply device to convey the circulation medium into the drill rod 24 under pressure, the circulation medium flows out from the space between the outer wall of the drill rod 24 and the inner wall of the casing 25 from bottom to top, for example, the circulation medium can be externally forced to enter the power head 4 through the high-pressure manifold 9, then flow to the bottom of the well through the inner cavity 241 of the drill rod, and then return to the ground from the cavity hole between the outer wall of the drill rod 24 and the casing 25 with cuttings, such as rock debris and soil, and the circulation mode of the circulation medium is positive pressure positive circulation. The positive pressure positive circulation function of the circulating medium is reserved on the casing truck-mounted drilling machine, and a user can select the positive pressure positive circulation function in a specific application scene to adapt to different drilling processes.
In some embodiments, the vehicle 1 is provided with a power system 5, a hydraulic system 6, a heat dissipation system 7, a high-pressure manifold 9, a rear support 11, a driller's cabin 12, an electrical system 13, and the like, in addition to the drill mast 2 and the pitch drive mechanism 10. The power head lifting driving device comprises a hydraulic oil cylinder 16 and a rope 3, the hydraulic oil cylinder 16 is vertically arranged at the upper end of the drill mast 2, a pulley is arranged at the telescopic end of the hydraulic oil cylinder 16, one end of the rope 3 is fixed at one side of the drill mast 2, the other end of the rope 3 bypasses the pulley to be connected with the power head 4, specifically, a crown block 15 can be arranged at the telescopic end of the hydraulic oil cylinder 16, the pulley is arranged on the crown block 15, and the lifting of the power head 4 can be controlled by adopting other modes such as a chain and the like besides adopting the rope 3. In addition, the drilling mast 2 is provided with a pressing pulley 23 to provide downward pressure for the drill stem 24 and increase the drilling speed, and the lower end of the drilling mast is provided with an operating platform 14 which is mainly used for placing well head tools and performing make-up and break-out on the drill stem 24 on the operating platform 14. The casing lifting device comprises a lifting oil cylinder, and the telescopic end of the lifting oil cylinder is connected with the casing rotor 17. The hydraulic oil cylinder 16, the lifting oil cylinder, the supporting oil cylinder 8 and other oil cylinders are respectively connected with a hydraulic system 6, and the hydraulic system 6 is connected with a hydraulic oil tank 19. In addition to hydraulic actuation and control, electrical actuation and control may also be used to perform related drilling operations. Before the drilling machine works, the drilling machine is stopped at a position to be drilled, a sleeve rotor 17 is additionally arranged on a drilling mast 2, a power system 5 is started, a supporting oil cylinder 8 is adjusted through a hydraulic system 6, then the drilling mast 2 is supported from a flat lying state to a vertical state through a pitching driving mechanism 10, then a telescopic supporting leg 18 is adjusted, after the length of the telescopic supporting leg 18 is fixed, the telescopic supporting leg 18 is placed on a working platform through adjusting the length of a compensation oil cylinder 21, then the lower end of a load guy rope 20 is connected with one end, far away from the bottom end of the drilling mast 2, of a carrying vehicle 1, a fixing lug plate is arranged at the position of the carrying vehicle 1, and the upper end of the load guy rope 20 is connected with the upper portion of the drilling mast 2. In addition to drilling vertical wells, the drill pipe 24 and casing 25 may be controlled to drill at an angle, for example the drilling rig may further comprise a drill mast tilt control connected to the pitch drive mechanism 10, by means of which the angle between the drill mast 2 and the earth formation 26 may be adjusted by the pitch drive mechanism 10.
After the preparation work is finished, the drilling operation is carried out by the following steps:
the method comprises the following steps: the hydraulic system 6 is controlled by a control handle in the driller room 12, hydraulic oil in a hydraulic oil tank 19 pushes a hydraulic oil cylinder 16 through a hydraulic pipeline, the hydraulic oil cylinder 16 pushes a crown block 15 to move up and down, the crown block 15 drives a power head 4 to move up and down along a drill mast 2 track through a rope 3, and simultaneously a hydraulic motor on the power head 4 drives the power head to rotate around a central shaft thereof so as to drive a drill rod 24 and a drill bit at the lower end of the drill rod 24 to rotate and be used for drilling a small-caliber hole;
step two: a control handle in the driller room 12 is controlled, hydraulic oil in a hydraulic oil tank 19 is conveyed into a lifting oil cylinder of a sleeve rotor 17 through a hydraulic pipeline through a hydraulic system 6, the sleeve rotor 17 is further pushed to drive a sleeve 25 to move up and down along a track, and meanwhile, the hydraulic oil drives a hydraulic motor of the sleeve rotor 17 to realize rotary operation and is used for drilling a large-caliber hole;
step three: one or more of mud, water or air enters the power head 4 through the high-pressure manifold 9 under the action of external force, flows to the bottom of the well through the inner cavity 241 of the drill rod, and returns to the ground along with cuttings such as rock debris and soil from a cavity between the outer wall of the drill rod 24 and the casing 25, namely the outer cavity 242 of the drill rod, and the circulation process is positive pressure positive circulation, wherein the flow direction of the positive pressure positive circulation is shown by an arrow A in figure 4. Or the circulating medium flows into the space between the outer wall of the drill rod 24 and the inner wall of the casing 25 under the action of gravity, and compressed air 243 is input into the inner cavity 241 of the drill rod to form negative pressure in the inner cavity 241 of the drill rod, so that the circulating medium can flow out from the inner cavity 241 of the drill rod from bottom to top, the circulating process is negative pressure reverse circulation, and the flow direction of the negative pressure reverse circulation is shown by an arrow B in figure 5.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. A casing truck-mounted drilling rig, comprising: the device comprises a carrying vehicle, a drilling mast, a pitching driving mechanism, a power head, a drill rod, a power head lifting driving device, a sleeve rotor, a sleeve lifting device, a circulating medium supply device and a compressed gas supply device;
the bottom end of the drilling mast is rotatably connected to the carrier vehicle, the pitching driving mechanism is used for driving the drilling mast to rotate, the drill rod is connected to the power head, the power head is used for controlling the drill rod to rotate, the power head lifting driving device is used for controlling the power head to move up and down along the drilling mast, the sleeve pipe lifting device is used for controlling the sleeve pipe rotor to move up and down, and the sleeve pipe rotor is used for driving a sleeve pipe to rotate;
the circulating medium supply device is used for conveying a circulating medium to a position between the outer wall of the drill rod and the inner wall of the casing from top to bottom, the compressed gas supply device is used for introducing compressed gas into the drill rod, and the circulating medium flows out from the upper end of the drill rod through the inner cavity of the drill rod after flowing to the bottom of the well.
2. The casing truck-mounted drilling rig according to claim 1, wherein the power head lifting drive device comprises a hydraulic cylinder and a rope, the hydraulic cylinder is vertically arranged at the upper end of the drill mast, a telescopic end of the hydraulic cylinder is provided with a pulley, one end of the rope is fixed on one side of the drill mast, and the other end of the rope bypasses the pulley to be connected with the power head.
3. The cased hole rig of claim 2, further comprising a load guy rope, one end of the load guy rope being connected to an upper portion of the drill mast and the other end being connected to an end of the carrier vehicle distal from the bottom end of the drill mast.
4. The casing truck-mounted drilling rig according to claim 1, wherein the casing lifting device comprises a lift cylinder, a telescoping end of the lift cylinder being connected to the casing rotor.
5. The casing truck-mounted drilling machine according to claim 1, further comprising a switching control device connected with the circulating medium supply device, wherein the switching control device is used for controlling the circulating medium supply device to convey the circulating medium into the drill rod in a pressurized mode, and the circulating medium flows out from the position between the outer wall of the drill rod and the inner wall of the casing from bottom to top.
6. The cased hole truck drill of claim 1, further comprising a drill mast tilt control coupled to the pitch drive mechanism, the drill mast tilt control being configured to adjust an angle between the drill mast and the ground via the pitch drive mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222231876.XU CN218376332U (en) | 2022-08-24 | 2022-08-24 | Sleeve vehicle-mounted drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222231876.XU CN218376332U (en) | 2022-08-24 | 2022-08-24 | Sleeve vehicle-mounted drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218376332U true CN218376332U (en) | 2023-01-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222231876.XU Active CN218376332U (en) | 2022-08-24 | 2022-08-24 | Sleeve vehicle-mounted drilling machine |
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| Country | Link |
|---|---|
| CN (1) | CN218376332U (en) |
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2022
- 2022-08-24 CN CN202222231876.XU patent/CN218376332U/en active Active
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