Crawler-type low-temperature coal bed gas drilling machine
By designing a crawler-type low-temperature coalbed methane drilling rig and adopting new materials and new processes, the problems of changes in drilling rig material performance in low-temperature environments and the easy freezing of hydraulic systems are solved, the stability and reliability of the drilling rig is improved, and costs and accident hazards are reduced. .
Patent Information
- Application Number
- CN202411920193.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-02-18
AI Technical Summary
When existing low-temperature drilling rigs are used in low-temperature environments, changes in material properties lead to brittle structure breakage, hydraulic system is prone to freezing, which increases potential accident risks and is costly.
A crawler-type low-temperature coalbed methane drilling rig is designed, using new materials and new processes, including a retractable mast, hydraulic top drive power head, open-closed hydraulic wellhead and insulation heating system to ensure normal operation in a low-temperature environment.
It improves the stability and reliability of the drilling rig, reduces wear and accident hazards in low-temperature environments, and reduces costs.
Smart Images
Figure CN119466559A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of low-temperature drilling rigs, and in particular to a crawler-type low-temperature coal-bed methane drilling rig. Background Art
[0002] A low-temperature drilling rig refers to a drilling rig that is used in a working environment of -40°C or even lower temperatures.
[0003] In addition to the basic functions of ordinary drilling rigs, cryogenic drilling rigs must also have equipment and components that meet the requirements of operation and storage in low-temperature environments. Currently, the existing cryogenic drilling rigs are mostly designed from cryogenic materials, with a long cycle and high cost.
[0004] The following problems may occur at the drilling site due to low temperature: The performance of various materials will change significantly at low temperatures. The impact toughness of metals will be significantly reduced at low temperatures, resulting in brittle fracture of structural parts. Using all low-temperature materials will lead to a significant increase in costs.
[0005] The hydraulic oil in the hydraulic pipeline will become thicker or even condense due to low temperature. If effective heating measures are not taken, it will easily lead to failure of the hydraulic control system, thereby increasing the risk of accidents.
[0006] The mud manifold is the channel for drilling fluid. Drilling fluid is easy to freeze at low temperatures, so necessary heating and insulation measures must be taken. Therefore, it is necessary to provide a crawler-type low-temperature coalbed methane drilling rig to solve the above-mentioned technical problems. Summary of the invention
[0007] The invention provides a crawler-type low-temperature coal-bed methane drilling rig, which solves the problems of the existing low-temperature drilling rigs having much water from the design of low-temperature materials, a long cycle and high costs.
[0008] In order to solve the above technical problems, the present invention provides a crawler-type low-temperature coalbed methane drilling rig, comprising: A crawler chassis assembly, wherein a mast assembly is arranged on the surface of the crawler chassis assembly, a power head assembly is arranged on one side of the mast assembly, an inner mast is arranged at one end of the mast assembly, a pulley frame assembly is arranged at one end of the inner mast, a bracket assembly is installed on one side of the bottom of the mast assembly, a clamping shackle is installed on one side of the surface of the power head assembly, a tool crane is arranged on one side of the inner mast, a core crane, a tool winch and a core winch are respectively installed on the surface of the mast assembly, an engine guard assembly is arranged on the surface of the crawler chassis assembly, and a cab assembly is installed on one side of the crawler chassis assembly.
[0009] Preferably, the track chassis assembly includes a track chassis, a front mast bracket and a rear mast bracket are respectively installed on the left and right sides of the track chassis surface, a battery bracket is installed on the surface of the track chassis, front legs and rear legs are respectively installed on the left and right ends of the track chassis, and a muffler bracket is installed on one end of the front leg.
[0010] Preferably, the power head assembly includes a power head bracket, a power head case is installed on the surface of the power head bracket, a brake assembly is installed at one end of the power head bracket, a floating device is installed at one end of the brake assembly, an anti-loosening seat assembly is installed at one end of the floating device, a water receiving head is installed at one end of the power head case, and a locking cylinder and a power head tilt cylinder are respectively installed on the sides of the power head bracket.
[0011] Preferably, the mast assembly includes an outer rod weld, a slide cylinder is installed on the surface of the outer rod weld, a wire rope tensioning cylinder is installed on the right end of the outer rod weld, a first lifting cylinder is installed on one end of the outer rod weld and on the left and right sides of the wire rope tensioning cylinder, an escalator is installed on the side of the outer rod weld, a lower support assembly is installed on the other end of the outer rod weld, a tightening device is installed on one side of the lower support assembly, an orifice device is installed on one end of the tightening device, and a pulley assembly is installed on one side of the orifice device.
[0012] Preferably, the inner mast comprises a mast body, a feed pulley assembly is installed on one side of the mast body, guide pulley assemblies are installed on the sides of the mast body and on the left and right sides of the feed pulley assembly, and a guide frame is installed on one side of the top of the mast body.
[0013] Preferably, the pulley frame assembly comprises a pulley frame assembly weldment, a plurality of pulleys are arranged inside the pulley frame assembly weldment, and a pin shaft is arranged between the pulley frame assembly weldment and the plurality of pulleys.
[0014] Preferably, the bracket assembly includes a slide body, the bottom of the slide body is rotatably connected to a lifting cylinder via a rotating shaft, and a sliding block is provided on the top surface of the slide body.
[0015] Preferably, the clamping breaker includes a base, one end of the base is connected to a first swivel support, the surface of the first swivel support is rotatably connected to a shaft assembly via a rotating shaft, one end of the shaft assembly is connected to a secondary flip frame, one side of the secondary flip frame is connected to a second lifting cylinder, one end of the second lifting cylinder is connected to a main flip frame, one side of the main flip frame is connected to a breaker, a clamping cylinder is arranged inside the breaker, a clamper is connected inside the breaker and on one side of the clamping cylinder, and a breaker cylinder is arranged on one side of the breaker.
[0016] Preferably, the tool crane includes a first mounting base, a second swivel support is connected to the surface of the first mounting base, and the second swivel support, a fixed arm is connected to the top end of the second swivel support, a crane telescopic cylinder is connected to one side of the fixed arm, a telescopic arm is arranged inside the crane telescopic cylinder, and one end of the telescopic arm is connected to a sling assembly.
[0017] Preferably, the coring crane comprises a second mounting base, a third swivel support is mounted on the top of the second mounting base, a swivel arm is connected to one side of the third swivel support, and guide seats are arranged on both left and right sides of the top of the swivel arm.
[0018] Compared with the related art, the crawler-type low-temperature coalbed methane drilling rig provided by the present invention has the following beneficial effects: The present invention provides a crawler-type low-temperature coal-bed methane drilling rig, which meets the drilling methods of various construction processes; The mast translation mechanism of the drilling rig increases the support height of the drilling rig and strengthens the stability of the mast. At the same time, it leaves enough lifting stroke for the wellhead and frees up enough space for installing wellhead safety equipment. The mast adopts a telescopic wire rope speed mechanism, which has a simple structure, shortens the transportation length, and increases the working stroke. At the same time, a unique oil pipe arrangement follow-up structure is added to the upper end of the mast. The oil pipes are arranged neatly, with less wear and tear and a neat appearance. The power head adopts hydraulic top drive mode, with large starting torque, and the spindle adopts a unique floating structure to facilitate the loading and unloading of the drill rod and reduce the wear of the drill rod thread; The power head is installed with an adjustable eccentric roller. According to the actual processing size of the outer mast roller, the eccentricity of the roller can be adjusted to achieve a reasonable gap to ensure the smooth movement of the power head. It can also avoid the risk of deformation of the outer mast roller and jamming of the power head after the drilling rig has been used for a period of time; The wellhead platform of the drilling rig adopts an open-and-close hydraulic wellhead, which is convenient for operation. At the same time, a clamping and unbuckling tong is equipped above the wellhead, which changes the way that domestic drilling rigs use bulky hydraulic tongs for loading and unloading drill pipes; Low-temperature drilling rigs make extensive use of new materials and new technologies. The relevant load-bearing parts are made of low-temperature resistant and high-strength materials. Auxiliary materials such as hydraulic oil, lubricating grease, diesel, etc. are all selected with low-temperature resistant grades to ensure the reliability of operations in low-temperature environments. At the same time, insulation and heating systems are also designed to ensure the normal startup of the drilling rig in low-temperature environments and effectively reduce the wear and tear of operation in low-temperature environments. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 A structural schematic diagram of a preferred embodiment of a crawler-type low-temperature coal-bed methane drilling rig provided by the present invention; Figure 2 for Figure 1 The schematic diagram of the structure of the overall unfolding of the device shown; Figure 3 for Figure 1 A schematic diagram of the structure of the crawler chassis assembly shown; Figure 4 for Figure 1 The schematic diagram of the structure of the power head assembly shown; Figure 5 for Figure 1 A schematic diagram of the structure of the mast assembly shown; Figure 6 for Figure 1 The schematic diagram of the structure of the inner mast shown; Figure 7 for Figure 1 A schematic diagram of the structure of the pulley frame assembly shown; Figure 8 for Figure 1 A schematic diagram of the structure of the bracket assembly shown; Fig. 9 for Figure 1 The structural schematic diagram of the second lifting cylinder shown; Fig.10 for Figure 1 The structural schematic diagram of the tool crane shown; Fig.11 for Figure 1 The structural schematic diagram of the coring crane is shown.
[0020] Numbers in the figure: 1, crawler chassis assembly; 1-1, crawler chassis; 1-2, front mast bracket; 1-3, rear mast bracket; 1-4, battery bracket; 1-5, muffler bracket; 1-6, front outrigger; 1-7, rear outrigger; 2. Power head assembly; 2-1. Power head bracket; 2-2. Power head housing; 2-3. Brake assembly; 2-4. Floating device; 2-5. Anti-loosening seat assembly; 2-6. Water connection head; 2-7. Locking cylinder; 2-8. Power head tilt cylinder; 3. Mast assembly; 3-1. External rod welding; 3-2. Slide cylinder; 3-3. Wire rope tensioning cylinder; 3-4. First lifting cylinder; 3-5. Ladder; 3-6. Lower support assembly; 3-7. Jacking device; 3-8. Orifice device; 3-9. Pulley assembly; 4. Inner mast; 4-1. Mast body; 4-2. Feed pulley assembly; 4-3. Guide pulley assembly; 4-4. Guide frame; 5. Pulley frame assembly; 5-1. Pulley frame assembly weldment; 5-2. Pulley; 5-3. Pin shaft; 6. Bracket assembly; 6-1. Sliding frame body; 6-2. Lifting cylinder; 6-3. Sliding block; 7. Clamping shackle; 7-1. Base; 7-2. First slewing support; 7-3. Rotating shaft assembly; 7-4. Auxiliary turning frame; 7-5. Second lifting cylinder; 7-6. Shackle; 7-7. Clamp; 7-8. Shackle cylinder; 7-9. Clamping cylinder; 7-10. Main turning frame; 8. Tool crane; 8-1. First mounting base; 8-2. Second slewing support; 8-3. Fixed arm; 8-4. Crane telescopic cylinder; 8-5. Telescopic arm; 8-6. Spreader assembly; 9. Coring crane; 9-1. Second mounting base; 9-2. Third slewing support; 9-3. Slewing arm; 9-4. Guide seat; 10. Tool winch; 11. Coring winch; 12. Engine hood assembly; 13. Cab assembly. DETAILED DESCRIPTION
[0021] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.
[0022] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 and Fig.11 ,in, Figure 1 A structural schematic diagram of a preferred embodiment of a crawler-type low-temperature coal-bed methane drilling rig provided by the present invention; Figure 2 for Figure 1 The schematic diagram of the structure of the overall unfolding of the device shown; Figure 3 for Figure 1 A schematic diagram of the structure of the crawler chassis assembly shown; Figure 4 for Figure 1 The schematic diagram of the structure of the power head assembly shown; Figure 5 for Figure 1 A schematic diagram of the structure of the mast assembly shown; Figure 6 for Figure 1 The schematic diagram of the structure of the inner mast shown; Figure 7 for Figure 1 A schematic diagram of the structure of the pulley frame assembly shown; Figure 8 for Figure 1 A schematic diagram of the structure of the bracket assembly shown; Fig. 9 for Figure 1 The structural schematic diagram of the second lifting cylinder shown; Fig.10 for Figure 1 The structural schematic diagram of the tool crane shown; Fig.11 for Figure 1A crawler type low temperature coal bed gas drilling rig, comprising: A crawler chassis assembly 1, wherein a mast assembly 3 is arranged on the surface of the crawler chassis assembly 1, a power head assembly 2 is arranged on one side of the mast assembly 3, an inner mast 4 is arranged on one end of the mast assembly 3, a pulley frame assembly 5 is arranged on one end of the inner mast 4, a bracket assembly 6 is installed on one side of the bottom of the mast assembly 3, a clamping shackle 7 is installed on one side of the surface of the power head assembly 2, a tool crane 8 is arranged on one side of the inner mast 4, a core crane 9, a tool winch 10 and a core winch 11 are respectively installed on the surface of the mast assembly 3, an engine guard assembly 12 is arranged on the surface of the crawler chassis assembly 1, and a cab assembly 13 is installed on one side of the crawler chassis assembly 1.
[0023] The track chassis assembly 1 includes a track chassis 1-1, a front mast bracket 1-2 and a rear mast bracket 1-3 are respectively installed on the left and right sides of the surface of the track chassis 1-1, a battery bracket 1-4 is installed on the surface of the track chassis 1-1, a front support leg 1-6 and a rear support leg 1-7 are respectively installed on the left and right ends of the track chassis 1-1, and a muffler bracket 1-5 is installed at one end of the front support leg 1-6.
[0024] The power head assembly 2 includes a power head bracket 2-1, a power head case 2-2 is installed on the surface of the power head bracket 2-1, a brake assembly 2-3 is installed at one end of the power head bracket 2-1, a floating device 2-4 is installed at one end of the brake assembly 2-3, an anti-loosening seat assembly 2-5 is installed at one end of the floating device 2-4, a water receiving head 2-6 is installed at one end of the power head case 2-2, and a locking cylinder 2-7 and a power head tilt cylinder 2-8 are respectively installed on the sides of the power head bracket 2-1.
[0025] The mast assembly 3 includes an outer rod weld 3-1, a slide cylinder 3-2 is installed on the surface of the outer rod weld 3-1, a wire rope tensioning cylinder 3-3 is installed on the right end of the outer rod weld 3-1, a first lifting cylinder 3-4 is installed on one end of the outer rod weld 3-1 and on the left and right sides of the wire rope tensioning cylinder 3-3, an escalator 3-5 is installed on the side of the outer rod weld 3-1, a lower support assembly 3-6 is installed on the other end of the outer rod weld 3-1, a tightening device 3-7 is installed on one side of the lower support assembly 3-6, an orifice device 3-8 is installed on one end of the tightening device 3-7, and a pulley assembly 3-9 is installed on one side of the orifice device 3-8.
[0026] The inner mast 4 includes a mast body 4-1, a feed pulley assembly 4-2 is installed on one side of the mast body 4-1, guide pulley assemblies 4-3 are installed on the sides of the mast body 4-1 and on the left and right sides of the feed pulley assembly 4-2, and a guide frame 4-4 is installed on one side of the top of the mast body 4-1.
[0027] The pulley frame assembly 5 includes a pulley frame assembly weldment 5-1, a plurality of pulleys 5-2 are arranged inside the pulley frame assembly weldment 5-1, and a pin shaft 5-3 is arranged between the pulley frame assembly weldment 5-1 and the plurality of pulleys 5-2.
[0028] The bracket assembly 6 includes a slide body 6-1, the bottom of the slide body 6-1 is rotatably connected to a lifting cylinder 6-2 via a rotating shaft, and a sliding block 6-3 is provided on the top surface of the slide body 6-1.
[0029] The clamping detacher 7 includes a base 7-1, one end of which is connected to a first swivel support 7-2, the surface of which is rotatably connected to a shaft assembly 7-3 via a rotating shaft, one end of which is connected to a secondary flip frame 7-4, one side of which is connected to a second lifting cylinder 7-5, one end of which is connected to a main flip frame 7-10, one side of which is connected to a detacher 7-6, a clamping cylinder 7-9 is provided inside the detacher 7-6, a clamping cylinder 7-7 is connected inside the detacher 7-6 and on one side of the clamping cylinder 7-9, and a detacher cylinder 7-8 is provided on one side of the detacher 7-6.
[0030] The tool crane 8 includes a first mounting base 8-1, the surface of the first mounting base 8-1 is connected to a second swivel support 8-2, the second swivel support 8-2, the top of the second swivel support 8-2 is connected to a fixed arm 8-3, one side of the fixed arm 8-3 is connected to a crane telescopic cylinder 8-4, a telescopic arm 8-5 is arranged inside the crane telescopic cylinder 8-4, and one end of the telescopic arm 8-5 is connected to a sling assembly 8-6.
[0031] The coring crane 9 includes a second mounting base 9-1, a third slewing support 9-2 is mounted on the top of the second mounting base 9-1, a slewing arm 9-3 is connected to one side of the third slewing support 9-2, and guide seats 9-4 are arranged on both sides of the top of the slewing arm 9-3.
[0032] The crawler chassis assembly 1 adopts a 6265×3000 chassis, with a maximum speed of 2km / h and a maximum climbing angle of 15°, and has strong power and climbing ability. The chassis main beam is a welded I-beam, which is safe and reliable. The hydraulic oil tank, radiator, diesel engine, diesel tank, low-temperature heating system, etc. are installed and distributed on the crawler chassis in sequence. The drilling rig is equipped with an independent diesel engine, which is imported from the United States. The lifting cylinder 6-2 drives the inner and outer masts and the upper distributed components to achieve pitching movement.
[0033] The front outriggers 1-6 and the rear outriggers 1-7 of the crawler chassis are equipped with outrigger cylinders. Both the front and rear outriggers are vertical cylinder telescopic structures, which support and level the drilling rig during operation. The mast is directly grounded, and the support is reliable and reasonable.
[0034] A lifting device is provided between the mast and chassis assembly 1. The lifting cylinder 6-2 drives the hinged joint of the mast rear bracket 1-3 and the slide assembly 6 to rotate as a fulcrum, so that the mast bracket can perform pitching motion. By controlling the extension and contraction of the lifting cylinder 6-2, the mast body is adjusted from a horizontal state to a vertical working state. When the mast part is in a horizontal state, the mast is supported on the rear bracket 1-3 and the front bracket 1-2, which plays a supporting and limiting role.
[0035] The rear side of the power head assembly 2 is connected to four lifting wire ropes from the lower part of the mast assembly around the pulley of the forehead, and the front side of the power head is connected to two wire ropes from the feed pulley 4-2 hanging from the mast assembly 3 around the inner mast 4. Under the action of the lifting mechanism, the power head can move along the guide rail of the inner mast 4, which ensures the movement of the power head in the direction of the mast; the power head tilt cylinder can make the power rotate a certain angle on the power head bracket. The power head is driven by a hydraulic motor and can achieve stepless speed regulation of 0-90r / min / 0-192r / min. The power head assembly is a double planetary reduction mechanism. In order to meet directional drilling, a brake assembly 2-3 is installed at the output end of the power head center shaft. The power head is added with a floating device 2-4. In order to make the power head move smoothly and reliably, an anti-loosening device 2-5 is added.
[0036] The mast assembly 3 is divided into two parts, front and back, which are welded together by left and right boxes. The outer mast is made of Q460E material, which can improve the overall strength and low temperature resistance of the equipment. There are escalators 3-5 on the side of the mast assembly 3, and an orifice device 3-8 is assembled on the lower side of the mast assembly 3. The slide cylinder 3-2 in the middle of the mast assembly 3 and the wire rope tensioning cylinder 3-3 can make the wire rope in a pre-tensioned state, so that the power head can run smoothly. The tool crane and the core crane are installed in the upper right part of the outer mast. The lifting cylinder 3-4 is installed in the left and right fixed arms. The upper end of the lifting cylinder piston rod is connected to the pulley bracket on the upper part of the inner mast, pushing the inner mast up and down along the guide rail. The lower support assembly 3-6 at the lower part of the outer mast is equipped with a support cylinder. After the mast is erected, the telescopic legs are supported on the sleepers, and the lifting load can be directly applied to the ground during operation.
[0037] The drilling rig mast is a retractable mast, and the drilling rig can enter a compact construction area. The power head assembly 2 is located on the inner mast 4, and the clamping shackle 7 is located outside the mast assembly 3. The power head assembly 2 and the clamping shackle 7 are arranged opposite to each other, and the centers of the two are located on the same straight line. The vulnerable joint of the power head assembly 2 is connected to the drill rod by threads, and the clamping shackle 7 clamps the drill rod when the vulnerable joint of the power head is connected to the drill rod by threads, so as to facilitate the installation or removal of the drill rod.
[0038] The main oil cylinder 3-4 is located inside the mast assembly 3 to drive the axial movement of the pulley frame assembly 5. The pulley on the pulley frame assembly 5 drives the wire rope and then drives the power head assembly 2 to move axially linearly on the inner mast 4; the main oil cylinder drives the inner mast to extend and retract, and pulls the power head to drill and lift through the pulley frame assembly 5 and wire rope at the top of the mast.
[0039] The upper part of the inner mast is a pulley frame assembly 5, and the lower part is installed with a feed pulley 4-2. The feed wire rope pulls the power head assembly 2 downward through the feed pulley 4-2. Two groups of four guide pulley assemblies 4-3 are installed on the inner mast 4, so that the inner mast can run along the guide rails installed on the mast assembly 3. The power head assembly 2 can run along the guide rails on both sides of the inner mast 4. The inner mast is added with a cylinder guide frame assembly 4-4 to facilitate the positioning and installation of the cylinder.
[0040] The pulley frame assembly 5 is installed on the inner mast 4, and is connected to the main oil cylinder on the outer mast on both sides. Four lifting wire ropes pull the power head upward along the inner mast guide rail through the pulley 5-1, thereby realizing the movement of the power head along the mast direction.
[0041] The bracket assembly 6 is connected to the chassis bracket through a rotating shaft. The slide cylinder 3-2 can move the inner mast on the sliding bracket to adjust the height of the workbench.
[0042] The clamping breaker 7 includes a base 7-1, a main flip frame 7-10 and an auxiliary flip frame 7-4 arranged on one side of the mast; the clamp 7-7, the breaker 7-6 and the power head assembly 2 cooperate with the clamping cylinder 7-9 and the motor to realize the installation of the drill rod, and the breaker cylinder realizes the removal of the drill rod.
[0043] The tool crane 8 is arranged on the mast assembly 3, which includes a first mounting base 8-1 which is mounted on one side of the outer mast by bolt connection, a fixed arm 8-3 and a telescopic arm 8-5 together constitute a boom, the boom is connected to the mounting base by a rotary reducer, and can be rotated under the drive of a hydraulic motor, and the telescopic oil cylinder 8-4 of the crane can make the telescopic arm 8-5 slide back and forth in the fixed arm 8-3, thereby increasing the length of the boom, a winch is installed at the bottom of the outer mast, a steel wire rope is wound on the winch, one end of the steel wire rope is fixedly connected to the winch, and the other end is connected to the hook through a pulley block inside the crane. The winch is installed on the side of the mast, has a small projection on the ground, does not occupy the drilling platform space, and has a high lifting height. The winch can not only realize the commonly used functions of lifting and lowering drilling tools, but also can realize emergency accidents during drilling, which greatly improves the function of the tool crane and reduces the configuration of special equipment.
[0044] When the drilling rig is in the construction state, the inner mast 4 is ensured to move up and down by controlling the slide cylinder 3-2 so that the entire mast part slides up and down.
[0045] The inner mast 4 is driven to move upward by driving the first lifting cylinder 3-4, and the power head assembly 2 is driven to move upward by the wire rope.
[0046] The drill rod is tightened by the clamping breaker 7, and the power head motor outputs power to rotate the power head main shaft so that the vulnerable joint is tightened on the drill rod. When removing the drill rod, the drill rod is clamped by the clamping breaker 7, and the power head main shaft is driven to reverse and remove the drill rod.
[0047] After the drilling rig construction is completed, the mast can be retracted, the power head can be dropped back under the mast, the clamping shackle can be released, the auxiliary winch boom can be retracted, the mast support cylinder can be retracted, the mast lifting cylinder can be retracted, the sliding cylinder can be adjusted, and the mast position can be adjusted to prevent the middle of the mast from colliding with the hydraulic tank.
[0048] The drilling rig enters the working state. The specific operation methods are as follows: Start the drilling rig, and after it runs smoothly, operate the hydraulic switches of the front and rear outriggers of the drilling rig, fully extend the front and rear outriggers of the drilling rig, support the drilling rig to the specified height, and ensure that the chassis is flat.
[0049] Operate the hydraulic switch of the mast lifting cylinder, and the mast will slowly rise from a horizontal state to a vertical working state under the action of the lifting cylinder.
[0050] Operate the hydraulic switch of the supporting cylinder under the outer mast to extend the mast legs to the ground, and the ground directly bears the mast load.
[0051] Operate the clamping shackle and the power head to connect the drilling tool with the power head.
[0052] Use the first lifting cylinder 3-4 to raise the height of the power head assembly 2, drive the power head to tilt through the power head tilt cylinder 2-8, control the tool crane 8 to lift the drilling tool through the wire rope, start the power head and the clamp to install the drill pipe, lift the power head assembly and drive the power head tilt cylinder 2-8 to restore to the level, drive the power head to rotate forward to tighten the drill pipe, thereby increasing the length of the drill pipe, loosen the clamping breaker 5, and continue drilling.
[0053] After the operation is completed, the drilling tools are lifted, unloaded, the mast legs are folded, the rear legs of the drilling rig are folded, the power of the drilling rig is turned off, and the drilling rig vehicle is restored to the transportation state.
[0054] During operation, the drilling rig enters the operating area, lowers the outriggers to prop up the drilling rig and make it horizontal, operates the hydraulic control valve, controls the hydraulic cylinder to drive the derrick to rotate around the support frame hinge shaft, and changes from a horizontal state to a vertical state. The outriggers at the lower end of the fixed arm extend to the ground, making the derrick in a working state. During operation, the lifting cylinder telescopically drives the telescopic mast to rise and fall, and pulls the drilling rig power head up and down along the telescopic mast through the double-speed rope pulley mechanism, thereby realizing the lifting and drilling operations of the drilling rig.
[0055] Compared with the related art, the crawler-type low-temperature coalbed methane drilling rig provided by the present invention has the following beneficial effects: The present invention provides a crawler-type low-temperature coal-bed methane drilling rig, which meets the drilling methods of various construction processes; The main machine adopts wheeled walking mode, which has the characteristics of good mobility, high operating efficiency, good drilling quality and low pollution. The mast translation mechanism of the drilling rig increases the support height of the drilling rig and strengthens the stability of the mast. At the same time, it leaves enough lifting stroke for the wellhead and frees up enough space for installing wellhead safety equipment. The mast adopts a telescopic wire rope speed mechanism, which has a simple structure, shortens the transportation length, and increases the working stroke. At the same time, a unique oil pipe arrangement follow-up structure is added to the upper end of the mast. The oil pipes are arranged neatly, with less wear and tear and a neat appearance. The power head adopts hydraulic top drive mode, with large starting torque, and the spindle adopts a unique floating structure to facilitate the loading and unloading of the drill rod and reduce the wear of the drill rod thread; The power head is installed with an adjustable eccentric roller. According to the actual processing size of the outer mast roller, the eccentricity of the roller can be adjusted to achieve a reasonable gap to ensure the smooth movement of the power head. It can also avoid the risk of deformation of the outer mast roller and jamming of the power head after the drilling rig has been used for a period of time; The wellhead platform of the drilling rig adopts an open-and-close hydraulic wellhead, which is convenient for operation. At the same time, a clamping and unbuckling tong is equipped above the wellhead, which changes the way that domestic drilling rigs use bulky hydraulic tongs for loading and unloading drill pipes; Low-temperature drilling rigs make extensive use of new materials and new technologies. The relevant load-bearing parts are made of low-temperature resistant and high-strength materials. Auxiliary materials such as hydraulic oil, lubricating grease, diesel, etc. are all selected with low-temperature resistant grades to ensure the reliability of operations in low-temperature environments. At the same time, insulation and heating systems are also designed to ensure the normal startup of the drilling rig in low-temperature environments and effectively reduce the wear and tear of operation in low-temperature environments.
[0056] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A crawler-type low-temperature coalbed methane drilling rig, characterized in that: include: A crawler chassis assembly, wherein a mast assembly is arranged on the surface of the crawler chassis assembly, a power head assembly is arranged on one side of the mast assembly, an inner mast is arranged at one end of the mast assembly, a pulley frame assembly is arranged at one end of the inner mast, a bracket assembly is installed on one side of the bottom of the mast assembly, a clamping shackle is installed on one side of the surface of the power head assembly, a tool crane is arranged on one side of the inner mast, a core crane, a tool winch and a core winch are respectively installed on the surface of the mast assembly, an engine guard assembly is arranged on the surface of the crawler chassis assembly, and a cab assembly is installed on one side of the crawler chassis assembly.
2. The crawler-type low-temperature coalbed methane drilling rig according to claim 1 is characterized in that: The track chassis assembly includes a track chassis, a front mast bracket and a rear mast bracket are respectively installed on the left and right sides of the track chassis surface, a battery bracket is installed on the surface of the track chassis, a front support leg and a rear support leg are respectively installed on the left and right ends of the track chassis, and a muffler bracket is installed at one end of the front support leg.
3. The crawler-type low-temperature coalbed methane drilling rig according to claim 1, characterized in that: The power head assembly includes a power head bracket, a power head case is installed on the surface of the power head bracket, a brake assembly is installed at one end of the power head bracket, a floating device is installed at one end of the brake assembly, an anti-loosening seat assembly is installed at one end of the floating device, a water receiving head is installed at one end of the power head case, and a locking cylinder and a power head tilt cylinder are respectively installed on the sides of the power head bracket.
4. The crawler-type low-temperature coalbed methane drilling rig according to claim 1, characterized in that: The mast assembly includes an outer rod weld, a slide cylinder is installed on the surface of the outer rod weld, a wire rope tensioning cylinder is installed on the right end of the outer rod weld, a first lifting cylinder is installed on one end of the outer rod weld and on the left and right sides of the wire rope tensioning cylinder, an escalator is installed on the side of the outer rod weld, a lower support assembly is installed on the other end of the outer rod weld, a tightening device is installed on one side of the lower support assembly, an orifice device is installed on one end of the tightening device, and a pulley assembly is installed on one side of the orifice device.
5. The crawler-type low-temperature coalbed methane drilling rig according to claim 1, characterized in that: The inner mast comprises a mast body, a feed pulley assembly is installed on one side of the mast body, guide pulley assemblies are installed on the sides of the mast body and on the left and right sides of the feed pulley assembly, and a guide frame is installed on one side of the top of the mast body.
6. The crawler-type low-temperature coalbed methane drilling rig according to claim 1, characterized in that: The pulley frame assembly comprises a pulley frame assembly weldment, a plurality of pulleys are arranged inside the pulley frame assembly weldment, and a pin shaft is arranged between the pulley frame assembly weldment and the plurality of pulleys.
7. The crawler-type low-temperature coalbed methane drilling rig according to claim 1, characterized in that: The bracket assembly comprises a slide body, the bottom of the slide body is rotatably connected to a lifting cylinder via a rotating shaft, and a sliding block is arranged on the top surface of the slide body.
8. The crawler-type low-temperature coalbed methane drilling rig according to claim 1, characterized in that: The clamping breaker includes a base, one end of which is connected to a first swivel support, the surface of the first swivel support is rotatably connected to a shaft assembly via a rotating shaft, one end of the shaft assembly is connected to a secondary flip frame, one side of the secondary flip frame is connected to a second lifting cylinder, one end of the second lifting cylinder is connected to a main flip frame, one side of the main flip frame is connected to a breaker, a clamping cylinder is arranged inside the breaker, a clamper is connected inside the breaker and on one side of the clamping cylinder, and a breaker cylinder is arranged on one side of the breaker.
9. The crawler-type low-temperature coalbed methane drilling rig according to claim 1, characterized in that: The tool crane includes a first mounting base, a second slewing support is connected to the surface of the first mounting base, and the second slewing support, a fixed arm is connected to the top end of the second slewing support, a crane telescopic cylinder is connected to one side of the fixed arm, a telescopic arm is arranged inside the crane telescopic cylinder, and a sling assembly is connected to one end of the telescopic arm.
10. The crawler-type low-temperature coalbed methane drilling rig according to claim 1, characterized in that: The coring crane comprises a second mounting base, a third slewing support is mounted on the top of the second mounting base, a slewing arm is connected to one side of the third slewing support, and guide seats are arranged on both left and right sides of the top of the slewing arm.