A hydraulic drilling machine

Abstract

The application discloses a hydraulic drilling machine in the technical field of coal gas layer mining, and aims to solve the problem that the existing hydraulic drilling machine applied in coal gas layer mining is difficult to simultaneously consider the drilling efficiency and the requirement of facilitating the installation of blowout preventers when aiming at a long drilling pipe. The hydraulic drilling machine comprises a base, a derrick and a turnover arm. The base comprises a middle plate, a bottom plate and a lifting oil cylinder for controlling the height of the middle plate. The turnover arm comprises a turnover oil cylinder and a lifting oil cylinder which jointly act. Firstly, the height of the middle plate on which the derrick is installed can be freely controlled through the lifting oil cylinder, the quick transportation of the hydraulic drilling machine is realized, and the requirement of leaving a blowout preventer space under the derrick is met. The drilling pipe is directly lifted to the height of the derrick by the lifting oil cylinder and the turnover oil cylinder at one time, and is adjusted to the posture matched with the derrick, the process and time of handing over the drilling pipe to the derrick are reduced, the working procedure is simplified, and the drilling efficiency of the super-long drilling pipe is effectively improved.

Description

Technical Field

[0001] The invention relates to a hydraulic drilling rig, belonging to the technical field of coal gas layer mining. Background Art

[0002] Coalbed methane extraction requires the use of a hydraulic drilling rig to press the drill pipe vertically from top to bottom into the borehole. When using a single extra-long drill pipe for pressure drilling (or down-drilling), due to the heavy weight of the drill pipe, an oblique push power catwalk is generally used to transport the drill pipe from a low position to a high position. After the posture is adjusted, it can be handed over to the derrick for pressure drilling operations. The complicated process leads to low pressure drilling efficiency. In addition, coalbed methane extraction requires the installation of a blowout preventer at the bottom of the hydraulic drilling rig. The derrick needs to leave space relative to the ground for installing the blowout preventer. The higher the derrick, the more difficult it is to transport the drill pipe from a low position to a high position.

[0003] Therefore, the existing hydraulic drilling rigs used in coalbed methane extraction have difficulty in simultaneously taking into account the requirements of drilling efficiency and facilitating the installation of blowout preventers when dealing with long drill pipes. Summary of the Invention

[0004] The purpose of the present application is to overcome the deficiencies in the prior art and to provide a hydraulic drilling rig that takes into account both pressure drilling efficiency and facilitates the installation of a blowout preventer.

[0005] To achieve the above objectives, this application is implemented using the following technical solutions:

[0006] The present application provides a hydraulic drilling rig, comprising:

[0007] A base, comprising a middle plate, a bottom plate, and lifting cylinders connected to the middle plate and the bottom plate respectively, wherein the bottom plate is supported on the ground and the lifting cylinders are used to control the height of the middle plate;

[0008] a derrick connected to the middle plate and used for pressure drilling of the drill pipe;

[0009] The flip arm includes a lifting cylinder connected to the middle plate and a flip cylinder connected to the lifting cylinder. The flip cylinder is used to connect the drill pipe. The lifting cylinder is used to drive the drill pipe to lift. The flip cylinder is also used to adjust the posture of the drill pipe. The drill pipe with adjusted posture is handed over to the derrick for pressure drilling operation.

[0010] In some embodiments of the present application, a derrick hoisting cylinder is further included, and the derrick is a foldable structure.

[0011] The derrick hoisting oil cylinder is hinged to the derrick and the middle plate respectively, and the derrick hoisting oil cylinder is used to drive the derrick to fold or unfold.

[0012] In some embodiments of the present application, the derrick hoisting cylinder is connected to the derrick via a detachable derrick hoisting cylinder connecting seat;

[0013] The base also includes a connecting frame. After the derrick lifting cylinder connecting seat is disassembled, the derrick lifting cylinder is separated from the derrick. The connecting frame is used to respectively connect the derrick lifting cylinder and the middle plate to fix the derrick lifting cylinder.

[0014] In some embodiments of the present application, the base further includes a derrick lifting auxiliary support; when the derrick is folded, one end of the derrick lifting auxiliary support is connected to the derrick support, and the other end is force-transmittingly connected to the bottom plate.

[0015] In some embodiments of the present application, the base also includes a second auxiliary support and multiple support rods, one end of the second auxiliary support is force-connected to the bottom plate, and the second auxiliary support is located on the side close to the folded derrick, and the support rods are respectively hinged to the middle plate and the bottom plate; the lifting cylinder drives the middle plate to reach a first height, and multiple support rods support the middle plate on the base; the lifting cylinder drives the middle plate down to a second height lower than the first height, the support rods are folded, and the other end of the second auxiliary support supports and connects to the middle plate.

[0016] In some embodiments of the present application, the derrick further comprises a first pin shaft, a second section of the derrick inner section, and the first section of the derrick inner section connected to the middle plate, the first section of the derrick inner section is provided with a first section rotating ear plate of the derrick inner section, the second section of the derrick inner section is provided with a second section rotating ear plate of the derrick inner section, and the first section rotating ear plate of the derrick inner section and the second section rotating ear plate of the derrick inner section are respectively provided with corresponding fixed pin holes and overlapping folding hinge holes;

[0017] The first pins are inserted into the folding hinge holes of the first rotating ear plate of the inner section of the derrick and the second rotating ear plate of the inner section of the derrick at the same time to realize the folding and unfolding of the derrick;

[0018] After the derrick is folded, the fixing pin holes of the first rotating ear plate of the inner section of the derrick and the second rotating ear plate of the inner section of the derrick overlap with each other, and the first pin shaft is simultaneously inserted into the fixing pin holes of the first rotating ear plate of the inner section of the derrick and the second rotating ear plate of the inner section of the derrick to fix the folding of the derrick.

[0019] In some embodiments of the present application, the base further includes a derrick connection seat, and the derrick further includes a connection pin matched with the derrick connection seat;

[0020] The derrick connection seat includes a derrick connection seat lower seat connected to the middle plate, a second pin shaft, a third pin shaft and a derrick connection seat upper flip cover, the derrick connection seat upper flip cover and the derrick connection seat lower seat are hinged through the second pin shaft, the derrick connection seat upper flip cover rotates around the second pin shaft to engage the connecting pin column, and after the derrick connection seat upper flip cover engages the connecting pin column, the third pin shaft is simultaneously inserted into the derrick connection seat upper flip cover and the derrick connection seat lower seat to fix the connecting pin column.

[0021] In some embodiments of the present application, a hydraulic top drive for drilling operations is further included;

[0022] The derrick includes an outer derrick section, an inner derrick section, a goose head connected to the outer derrick section, a control rope and a feed cylinder; the two ends of the control rope are respectively connected to the outer derrick section and the hydraulic top drive; the feed cylinder is used to drive the outer derrick section and the inner derrick section to slide relative to each other to control the height of the goose head; the up and down movement of the goose head is synchronously controlled by the control rope to control the up and down movement of the hydraulic top drive.

[0023] In some embodiments of the present application, the derrick is provided with a transition connection block, and the hydraulic top drive is provided with a connecting flange plate. The hydraulic top drive moves up and down until the connecting flange plate corresponds to the position of the transition connection block, and a first fastener fixes the connecting flange plate and the transition connection block to achieve a fixed connection between the hydraulic top drive and the derrick.

[0024] In some embodiments of the present application,

[0025] The flip arm further includes a mounting base connected to the middle plate, a posture rod, a first connecting rod, and a second connecting rod; the first connecting rod and the second connecting rod are respectively hinged to the mounting base, the lifting cylinder is respectively hinged to the middle portion of the first connecting rod and the mounting base, and the posture rod is respectively hinged to the first connecting rod and the second connecting rod; the lifting cylinder controls the height of the posture rod by telescoping;

[0026] The flip arm also includes a flip frame and a clamping clamp device for clamping the drill pipe. The flip frame is hinged to the attitude rod and the clamping clamp device respectively. The cylinder body of the flip cylinder is fixed to the attitude rod, and the piston rod of the flip cylinder is hinged to the flip frame; the flip cylinder controls the rotation posture of the clamping clamp device around the attitude rod by telescoping.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The hydraulic drilling rig provided in the present application can, first of all, freely control the height of the middle plate on which the derrick is installed through the lifting cylinder, thereby realizing the rapid transportation of the hydraulic drilling rig and the requirement of leaving space for the blowout preventer under the derrick; and utilizes the lifting cylinder and the flip cylinder to directly lift the drill pipe to the height of the derrick at one time, and adjust it to a posture matching the derrick, thereby reducing the process and time of handing over the drill pipe to the derrick, simplifying the process, and effectively improving the drilling efficiency of ultra-long drill pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the present application or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0030] Figure 1 is a schematic side elevation structural diagram of the hydraulic drilling rig provided in this embodiment;

[0031] Figure 2 yes Figure 1 A schematic diagram of the top view of the middle base and the flip arm when not connected;

[0032] Figure 3 yes Figure 1 A schematic diagram of the side elevation structure when the middle plate of the middle base is at a first height;

[0033] Figure 4 yes Figure 1 Schematic diagram of the structure when the middle derrick connecting seat is in the buckled state;

[0034] Figure 5 yes Figure 1 Schematic diagram of the structure of the middle derrick when it is in the extended working state;

[0035] Figure 6 yes Figure 1 Schematic diagram of the process of lifting and adjusting the posture of the drill pipe by the middle flip arm;

[0036] Figure 7 yes Figure 5 Schematic diagram of the structure of the connection between the hydraulic top drive and the derrick;

[0037] Figure 8 yes Figure 5 Schematic diagram of the structure of the middle derrick when the connecting seat of the lifting cylinder is not disassembled;

[0038] Figure 9 yes Figure 1 A schematic diagram of the structure of the joint point when the first section of the inner section of the middle mast and the second section of the inner section of the mast are in the deployed working state;

[0039] Figure 10 yes Figure 5 Schematic diagram of the structure of the middle goose head folding;

[0040] Figure 11 yes Figure 1 Schematic diagram of the structure of the middle connecting frame fixing the position of the derrick lifting cylinder;

[0041] Figure 12 yes Figure 1 Schematic diagram of the structure of the middle derrick and the base in a folded state;

[0042] Figure 13 yes Figure 1 Front view of the middle base;

[0043] Figure 14 is with Figure 5 The corresponding structural diagram of the derrick when it is in the unfolded working state;

[0044] In the figure: 1. Base; 2. Derrick; 3. Hydraulic top drive; 4. Power elevator; 5. Turning arm; 6. Drill station; 7. Power slips;

[0045] 1-1, derrick connection base; 1-2, lifting cylinder; 1-3, derrick lifting auxiliary support; 1-4, left frame; 1-5, middle plate; 1-6, right frame; 1-1-1, derrick connection base upper cover; 1-1-2, derrick connection base fastening bolts; 1-1-3, second pin; 1-1-4, derrick connection base lower base; 1-1-5, third pin; 1-5-1, connection frame; 1-7, support base; 1-8, support rod; 1-9, bottom plate; 1-10, second auxiliary support;

[0046] 2-1, derrick outer section; 2-2, derrick hoisting cylinder; 2-3, derrick hoisting cylinder connecting seat; 2-4, feed cylinder; 2-5, control rope; 2-6, derrick inner section; 2-7, goose head; 2-1-1, transition connection block; 2-1-2, first fastener; 2-1-3, connecting flange plate; 2-3-1, clamping plate; 2-3-2, clamping plate connecting plate; 2-3-3, third fastener; 2-3-4, derrick hoisting cylinder connecting pin; 2-6-1, first section of derrick inner section; 2-6-2, first pin; 2-6-3, second section of derrick inner section; 2-6-4, rotating lug plate of second section of derrick inner section; 2-6-5, second fastener; 2-6-6, rotating lug plate of first section of derrick inner section; 2-6-7, folding hinge hole; 2-6-8, fixing pin hole;

[0047] 5-1. Mounting seat; 5-2. Lifting cylinder; 5-3. First connecting rod; 5-4. Second connecting rod; 5-5. Attitude rod; 5-6. Turning cylinder; 5-7. Turning frame; 5-8. Clamping clamp device. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the present application / the present application's embodiments to clearly and completely describe the technical solutions of the present application / the present application's embodiments. Obviously, the described embodiments are only part of the embodiments of the present application / the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present application / the present application, its application, or use. Example 1

[0049] This embodiment provides a hydraulic drilling rig to solve the problem in the prior art that hydraulic drilling rigs used in coalbed methane extraction are difficult to simultaneously meet the requirements of drilling efficiency and easy installation of blowout preventers for long drill pipes.

[0050] refer to Figure 1 The hydraulic drilling rig provided in this embodiment includes a base 1, which includes a middle plate 1-5, a bottom plate 1-9 and a lifting cylinder 1-2 connected to the middle plate 1-5 and the bottom plate 1-9 respectively. The bottom plate 1-9 is supported on the ground. Figure 1 As shown by the arrows, the lifting cylinder 1-2 is used to control the height of the middle plate 1-5.

[0051] The hydraulic drilling rig also includes a derrick 2, which is connected to the middle plate 1-5. The derrick 2 is used for pressure drilling of the drill pipe. The middle plate 1-5 is raised by the lifting cylinder 1-2 to leave space under the middle plate 1-5 for installing a blowout preventer. When the hydraulic drilling rig needs to be transported, the lifting cylinder 1-2 drives the middle plate 1-5 to descend, reducing the space between the middle plate 1-5 and the bottom plate 1-9, making it easier to transport the base 1.

[0052] When in use, the gravity of the middle plate 1-5, the derrick 2 and its accessories is applied to the bottom plate 1-9 through the lifting cylinder 1-2 and other supporting components, and the bottom plate 1-9 is then applied to the ground.

[0053] It is not difficult for those skilled in the art to see that the derrick 2 can realize the pressure drilling of the drill pipe by installing components with corresponding functions, which will not be described in detail here.

[0054] The hydraulic drilling rig also includes a flip arm 5 for transferring the drill pipe from the ground to the derrick 2. The flip arm 5 includes a mounting seat 5-1 connected to the middle plate 1-5, a lifting cylinder 5-2 connected to the mounting seat 5-1, and a flip cylinder 5-6 connected to the lifting cylinder 5-2.

[0055] The turning cylinder 5-6 is used to connect the drill pipe, and the methods of connecting the drill pipe include but are not limited to grabbing and assembling. It is not difficult for those skilled in the art to see that the turning cylinder 5-6 can be equipped with other components with corresponding functions to indirectly achieve the function of connecting the drill pipe.

[0056] The lifting cylinder 5-2 is used to drive the drill pipe to be lifted from the ground to the height of the derrick 2, and the turning cylinder 5-6 is also used to adjust the posture of the drill pipe. The drill pipe with adjusted posture is handed over to the derrick 2 for pressure drilling operation.

[0057] Non-exclusive usage: Position the hydraulic drilling rig, in its folded transport configuration, above the borehole. Align derrick 2 with the borehole. Lift cylinder 5-2 drives center plate 1-5 to the appropriate height. Install the blowout preventer beneath center plate 1-5. Control the extension and retraction of lift cylinder 5-2 and tilt cylinder 5-6 to bring tilt arm 5 close to the ground. Install the drill pipe on tilt cylinder 5-6 or its associated connecting components. Lift cylinder 5-2 drives the drill pipe to the height of derrick 2. Tilt arm 5 tilts the drill pipe so that its position matches derrick 2. Attachments to derrick 2 grab / connect the drill pipe, or tilt arm 5 is actuated again to install the drill pipe on derrick 2, completing the work handover. Derrick 2 then drives the drill pipe into the borehole, completing the pressure drilling operation.

[0058] To prevent conflicts with BOP1, refer to Figure 1 The installation position of the mounting seat 5-1 can be selected relatively freely, such as the side of the middle plate 1-5 to avoid the blowout preventer.

[0059] As one embodiment, the mounting base 5-1 is the middle plate 1-5 itself.

[0060] The hydraulic drilling rig provided in this embodiment can firstly freely control the height of the middle plate 1-5 on which the derrick 2 is installed through the lifting cylinder 5-2, thereby realizing the rapid transportation of the hydraulic drilling rig and the requirement of leaving space for the blowout preventer under the derrick 2; the lifting cylinder 5-2 and the turning cylinder 5-6 are used to directly lift the drill pipe to the height of the derrick 2 at one time and adjust it to a posture matching the derrick 2, thereby reducing the process and time of handing over the drill pipe to the derrick 2, simplifying the process, and effectively improving the drilling efficiency of ultra-long drill pipes.

[0061] It is worth noting that the "middle" in the middle plate 1-5 is viewed from the overall perspective of the hydraulic drilling rig, taking into account the positional relationship of the middle plate 1-5 relative to the bottom plate 1-9 and the derrick 2. Example 2

[0062] This embodiment provides a hydraulic drilling rig. This embodiment is optimized based on the first embodiment to improve the technical effect and refine the technical solution. For details not fully described in this embodiment, please refer to the first embodiment.

[0063] In the first embodiment, the base 1 is foldable for easy transportation. Figure 1As shown in the figure, the derrick 2 is a foldable structure. The hydraulic drilling rig further includes a derrick hoisting cylinder 2-2, which is articulated to the derrick 2 and the center plate 1-5. The derrick hoisting cylinder 2-2 is supported by the center plate 1-5 to drive the derrick 2 to expand and fold. When the derrick 2 is expanded, pressure drilling can be performed. The derrick hoisting cylinder 2-2 can meet the requirements of horizontal lifting of the derrick 1.

[0064] The foldable structure of the derrick 2 can be realized in other forms known in the art, such as folding, or even more other known forms, which will not be described in detail here.

[0065] When the derrick 2 and the base 1 are folded together for transportation, the weight of the derrick 2 may affect the life of the folding joints. As one example, refer to Figure 12 When the derrick 2 is folded in the direction indicated by the arrow and lowered in height, its original top position will generate a large destructive torque on the folding key point after folding. In order to support the weight of the derrick 2, the base 1 also includes a derrick lifting auxiliary support 1-3. When the derrick 2 is in the unfolded working state, one end of the derrick lifting auxiliary support 1-3 is connected to the bottom plate 1-9 and the other end is free. After the derrick 2 is folded, the two ends of the derrick lifting auxiliary support 1-3 are respectively connected to the derrick 2 and the bottom plate 1-9 to transfer part of the load of the derrick 2 to the bottom plate 1-9. As one embodiment, the derrick lifting auxiliary support 1-3 connects the derrick 2 and the bottom plate 1-9 along the direction of the gravity line to prevent the weak point of the derrick lifting auxiliary support 1-3 from breaking. As one embodiment, the bottom plate 1-9 is appropriately extended to adapt to the length of the derrick 2 after folding, so as to facilitate the arrangement of the derrick lifting auxiliary support 1-3.

[0066] As one of the support solutions for the middle plates 1-5, refer to Figure 12 and Figure 3 The base 1 also includes a second auxiliary support 1-10 and a plurality of support rods 1-8, wherein one end of the second auxiliary support 1-10 is connected to the bottom plate 1-9 for force transmission, and the other end is a free end when the base 1 is in the unfolded state, and the two ends of the support rods 1-8 are hinged to the middle plate 1-5 and the bottom plate 1-9 respectively. Figure 3 The lifting cylinder 1-2 drives the middle plate 1-5 to reach the first height, and multiple support rods 1-8 support the middle plate 1-5 on the base 1. Multiple support rods 1-8 share the force and reduce the risk. Figure 12 Lifting cylinder 1-2 lowers middle plate 1-5 to a second height lower than the first. Support rod 1-8, hinged at both ends, tilts and folds. Second auxiliary supports 1-10, each supporting and connecting middle plate 1-5 and bottom plate 1-9, transmit force. Second auxiliary supports 1-10 are primarily located on the side of the derrick 2 that would otherwise collapse after folding. They support the weak points of base 1 and work in conjunction with auxiliary supports 1-3 for lifting the derrick to share the load on derrick 2.

[0067] As one example, refer to Figure 3 and Figure 13 The plurality of support rods 1-8 are divided into two groups, each support rod 1-8 in each group is parallel, and the support rods 1-8 of the two groups cross each other. After the middle plate 1-5 reaches the first height, the two groups of support rods 1-8 cross each other to support the middle plate 1-5. Figure 13 , the middle plate 1-5 reaches the first height, and the left sheet rack 1-3 and the right sheet rack 1-6 can be set up near the two groups of support rods 1-8 as temporary reinforcement facilities.

[0068] As one of the folding solutions of the derrick 2, refer to Figure 9 and Figure 12 The derrick 2 also includes a first pin 2-6-2 at the folding joint, serving as a folding pivot. The derrick 2 is roughly divided into two parts: the second inner section 2-6-3 and the first inner section 2-6-1 connected to the center plate 1-5. The first inner section 2-6-1 is provided with a first inner section rotating lug 2-6-6, while the second inner section 2-6-3 is provided with a second inner section rotating lug 2-6-4. The first inner section rotating lug 2-6-6 and the second inner section rotating lug 2-6-4 are each provided with corresponding fixed pin holes 2-6-8 and overlapping folding hinge holes 2-6-7.

[0069] The folded hinge hole 2-6-7 of the first rotating ear plate 2-6-6 of the inner section of the derrick and the folded hinge hole 2-6-7 of the second rotating ear plate 2-6-4 of the inner section of the derrick always keep the same hole and are inserted by the first pin 2-6-2 at the same time. Figure 9 As shown in the arrows, the rotating ear plate 2-6-6 of the first section of the derrick inner section and the rotating ear plate 2-6-4 of the second section of the derrick inner section rotate relative to each other, so that the second section 2-6-3 of the derrick inner section and the first section 2-6-1 of the derrick inner section can be folded together. When the second section 2-6-3 of the derrick inner section and the first section 2-6-1 of the derrick inner section are unfolded, the fixing pin holes 2-6-8 of the two sections do not overlap. When the second section 2-6-3 of the derrick inner section and the first section 2-6-1 of the derrick inner section are completely folded, the fixing pin holes 2-6-8 of the two sections overlap.

[0070] When the second section 2-6-3 of the inner section of the derrick and the first section 2-6-1 of the inner section of the derrick are in a completely folded state, the fixed pin hole 2-6-8 of the rotating ear plate 2-6-6 of the first section of the inner section of the derrick coincides with the fixed pin hole 2-6-8 of the rotating ear plate 2-6-4 of the second section of the inner section of the derrick. Pull out the first pin shaft 2-6-2 in the folded hinge hole 2-6-7 or take a new first pin shaft 2-6-2, and insert the first pin shaft 2-6-2 into the fixed pin holes 2-6-8 of the two sections of the derrick 2 to fix the folded posture of the derrick 2 and prevent the second section 2-6-3 of the inner section of the derrick from shaking when the hydraulic drilling rig is folded and transported.

[0071] As one example, refer to Figure 9 When the second section 2-6-3 of the derrick inner section and the first section 2-6-1 of the derrick inner section are in the unfolded state, the second fastener 2-6-5 is used to fix the end faces of the second section 2-6-3 of the derrick inner section and the first section 2-6-1 of the derrick inner section to ensure the stability of the posture and force of the derrick 2 during operation.

[0072] Figure 1 、 Figure 5 and Figure 14 As one of the auxiliary components of the derrick 2 used for pressure drilling, the hydraulic drilling rig also includes a hydraulic top drive 3 for lowering the drill pipe. The vertical movement of the hydraulic top drive 3 can be controlled to control the height of the drill pipe connection. To drive the vertical movement of the hydraulic top drive 3, the derrick 2 includes an outer derrick section 2-1, an inner derrick section 2-6, a goose head 2-7 connected to the outer derrick section 2-1, a control rope 2-5, and a feed cylinder 2-4 (the feed cylinder 2-4 is not directly shown inside the derrick 2; the reference numerals only represent its position). The control rope 2-5 connects the outer derrick section 2-1 and the hydraulic top drive 3 at both ends. The feed cylinder 2-4 connects the outer derrick section 2-1 and the inner derrick section 2-6, respectively. The feed cylinder 2-4 is used to drive the outer derrick section 2-1 and the inner derrick section 2-6 to slide up and down relative to each other to control the height of the goose head 2-7. The vertical movement of the goose head 2-7 is synchronously driven by the control rope 2-5 to control the vertical movement of the hydraulic top drive 3.

[0073] As one example, refer to Figure 10 In the transport state, the space between the goose head 2-7 and the outer section 2-1 of the derrick can be designed as a foldable structure similar to that between the second section 2-6-3 of the inner section of the derrick and the first section 2-6-1 of the inner section of the derrick.

[0074] In order to prevent the hydraulic top drive 3 from shaking when the derrick 2 is being transported, as one embodiment, reference is made to Figure 7The derrick 2 is provided with a transition block 2-1-1, and the hydraulic top drive 3 is provided with a connecting flange plate 2-1-3 corresponding to the transition block 2-1-1. The hydraulic top drive 3 is indirectly driven up and down by the feed cylinder 2-4 until the connecting flange plate 2-1-3 is aligned with the transition block 2-1-1. The first fastener 2-1-2 securely connects the transition block 2-1-1 and the connecting flange plate 2-1-3, thereby achieving a fixed connection between the hydraulic top drive 3 and the derrick 2 and preventing the hydraulic top drive 3 from shaking when the hydraulic drilling rig is folded and transported. As one embodiment, the first fastener 2-1-2 can be a bolt.

[0075] To improve the performance of the flip arm 5, refer to Figure 6 As shown by the arrows in the figure, the flip arm 5 also includes a posture rod 5-5, a first connecting rod 5-3 and a second connecting rod 5-4; the first connecting rod 5-3 and the second connecting rod 5-4 are respectively hinged to the mounting seat 5-1, the lifting cylinder 5-2 is hinged to the middle part of the first connecting rod 5-3, and the posture rod 5-5 is hinged to the first connecting rod 5-3 and the second connecting rod 5-4 respectively; when the lifting cylinder 5-2 is extended or retracted, the first connecting rod 5-3 and the second connecting rod 5-4 are synchronously pitched, thereby controlling the height of the posture rod 5-5.

[0076] The flip arm 5 also includes a flip frame 5-7 and a clamping clamp device 5-8 for clamping the drill pipe. The flip frame 5-7 is respectively hinged to the attitude rod 5-5 and the clamping clamp device 5-8. The cylinder body of the flip cylinder 5-6 is fixed to the middle part of the attitude rod 5-5, and the piston rod of the flip cylinder 5-6 is hinged to the flip frame 5-7; the flip cylinder 5-6 controls the clamping clamp device 5-8 to rotate around the attitude rod 5-5 by telescoping.

[0077] The lifting and posture adjustment of the drill pipe can be achieved at one time through the cooperation of the lifting cylinder 5-2 and the tilting cylinder 5-6.

[0078] As one example, refer to Figure 2 An iron drill station 6 is provided on the side of the base 1 for completing the drill pipe make-up operation. A power slip 7 is provided at the position corresponding to the derrick 2. The power slip 7 is located below the hydraulic top drive 3. The power slip 7 is used to clamp the drill pipe. After the iron driller at the iron drill station 6 completes the make-up operation, the hydraulic top drive 3 descends to complete the drilling operation.

[0079] Compared with the first embodiment and the prior art, the hydraulic drilling rig provided in this embodiment allows the hydraulic drilling rig to be folded, thereby reducing the floor space occupied during transportation and storage and improving transfer efficiency. Example 3

[0080] This embodiment provides a hydraulic drilling rig. This embodiment is optimized based on the second embodiment to improve the technical effect and refine the technical solution. For details not fully described in this embodiment, please refer to the first embodiment.

[0081] The difference between this embodiment and embodiment two is that the base 1 and the derrick 2 are transported separately.

[0082] Reference Figure 11 As one of the embodiments, the hydraulic drilling machine comprises a derrick hoisting cylinder connecting seat 2-3 arranged on the derrick 2, and the derrick hoisting cylinder 2-2 is hinged to the derrick 2 through the hinged derrick hoisting cylinder connecting seat 2-3. The derrick hoisting cylinder connecting seat 2-3 is detachable, and when transported, the derrick hoisting cylinder connecting seat 2-3 is disassembled to separate the derrick 2 from the derrick hoisting cylinder 2-2. The derrick hoisting cylinder 2-2 loses the structural support and has a tendency to fall in the direction shown in FIG. 2. At this time, the derrick hoisting cylinder 2-2 and the middle plate 1-5 are connected by the connecting frame 1-5-1, and the middle plate 1-5 is used as a new structural stress point to fix and lay the derrick hoisting cylinder 2-2. Figure 11

[0083] As one of the embodiments, reference is made to FIG. 2, and the derrick hoisting cylinder connecting seat 2-3 comprises a clamping plate 2-3-1, a clamping plate connecting plate 2-3-2, a third fastener 2-3-3, and a derrick hoisting cylinder connecting pin shaft 2-3-4. The clamping plate 2-3-1 is connected with the derrick 2, the clamping plate connecting plate 2-3-2 is detachably connected with the clamping plate 2-3-1 through the third fastener 2-3-3, and the derrick hoisting cylinder connecting pin shaft 2-3-4 is arranged on the clamping plate connecting plate 2-3-2 and used for hinging the derrick hoisting cylinder 2-2. As one of the embodiments, the third fastener 2-3-3 is a bolt. Figure 8

[0084] As one of the detachable connection schemes of the derrick 2 and the middle plate 1-5, reference is made to FIG. 1, FIG. 2, and the arrows thereof, FIG. 3, and FIG. 4, and the base 1 further comprises a derrick connecting seat 1-1 mounted on the middle plate 1-5. The derrick 2 further comprises a connecting pin column matched with the derrick connecting seat 1-1. The connecting pin column is assembled in the derrick connecting seat 1-1 to realize the connection of the middle plate 1-5 and the derrick 2. Figure 3 Figure 4 Figure 11 Figure 12 The derrick connecting seat 1-1 comprises a derrick connecting seat lower seat 1-1-4 connected with the middle plate 1-5, a second pin shaft 1-1-3, a third pin shaft 1-1-5, and a derrick connecting seat upper cover 1-1-1.

[0085] The derrick connecting seat upper cover 1-1-1 and the derrick connecting seat lower seat 1-1-4 are hinged through the second pin shaft 1-1-3. After the connecting pin column is put into the derrick connecting seat lower seat 1-1-4, the derrick connecting seat upper cover 1-1-1 is rotated around the second pin shaft 1-1-3 to buckle the derrick connecting seat lower seat 1-1-4, so that the connection of the derrick 2 and the middle plate 1-5 can be realized.

[0086] ​​​​​In order to prevent the connecting pin from falling out, corresponding pin holes can be set on the upper cover 1-1-1 of the derrick connecting seat and the lower seat 1-1-4 of the derrick connecting seat away from the second pin shaft 1-1-3. After the upper cover 1-1-1 of the derrick connecting seat is engaged with the connecting pin, the third pin shaft 1-1-5 is inserted into the upper cover 1-1-1 of the derrick connecting seat and the lower seat 1-1-4 of the derrick connecting seat at the same time, and the upper cover 1-1-1 of the derrick connecting seat and the lower seat 1-1-4 of the derrick connecting seat are clamped at the same time to fix the connecting pin in the derrick connecting seat 1-1.

[0087] refer to Figure 4 As one embodiment, the derrick connection seat 1-1 further includes a derrick connection seat fastening bolt 1-1-2, and the derrick connection seat fastening bolt 1-1-2 is used to adjust the tightness of the second pin shaft 1-1-3. Example 4

[0088] This embodiment provides a hydraulic drilling rig, which is improved on the basis of the above embodiment. Figures 1 to 14 , including a base 1, a derrick 2, a hydraulic top drive 3, a power elevator 4, a flip arm 5, an iron drill station 6, and a power slip 7.

[0089] Among them, the base 1 includes: a derrick connecting seat 1-1, a lifting cylinder 1-2, a derrick lifting auxiliary support 1-3, a left frame 1-4, a middle plate 1-5, and a right frame 1-6.

[0090] refer to Figure 5 and Figure 14 The derrick 2 structure includes: an outer derrick section 2-1, a derrick hoisting cylinder 2-2, a derrick hoisting cylinder connector 2-3, a feed cylinder 2-4, a control rope 2-5, an inner derrick section 2-6, and a derrick head 2-7. The feed cylinder 2-4 is hinged at one end to the outer derrick section 2-1 and at the other end to the inner derrick section 2-6. The feed cylinder 2-4 provides power for the sliding movement of the inner and outer derrick sections 2-6. The derrick head 2-7 is bolted to the inner derrick section 2-6. The control rope 2-5 is fixed at one end to the bottom of the outer derrick section 2-1, passes around the derrick head 2-7, and connects to the hydraulic top drive 3. As the inner derrick section 2-6 moves up and down, the control rope 2-5 drives the hydraulic top drive 3 up and down. The derrick hoisting cylinder 2-2 is hinged at one end to the center plate 1-5 and at the other end to the hoisting cylinder connector 2-3. The lifting cylinder connecting seat 2-3 is connected to the derrick outer section 2-1 by bolts.

[0091] The mast inner section 2-6 comprises the mast inner section first section 2-6-1, the mast inner section second section 2-6-3, a first pin 2-6-2, the mast inner section second section rotating lug 2-6-4, a second fastener 2-6-5, and the mast inner section first section rotating lug 2-6-6. During transportation, the second fastener 2-6-5 is removed, the mast inner section second section 2-6-3 is rotated about the first pin 2-6-2, so that the mast inner section second section rotating lug 2-6-4 overlaps with the mast inner section first section rotating lug 2-6-6. The pin is then connected, completing the assembly for transportation and shortening the transport length.

[0092] refer to Figure 12 When disassembling the drilling rig, the base 1 lowers the middle plate 1-5 to a low position through the lifting cylinder 1-2, loosens the derrick connection seat fastening bolts 1-1-2 of the two groups of derrick connection seats 1-1 near the wellhead side, rotates them to the side around the second pin shaft 1-1-3, and rotates the derrick connection seat upper cover 1-1-1 around the third pin shaft 1-1-5 to open it, making room for the upper space and realizing quick disassembly.

[0093] refer to Figure 12 , the derrick hoisting oil cylinder 2-2 retracts, causing the derrick 2 to fall to a horizontal position, and the derrick hoisting oil cylinder connecting seat 2-3 is supported on the derrick hoisting auxiliary support 1-3.

[0094] refer to Figure 8 , remove the third fastener 2-3-3, disengage the card plate connecting plate 2-3-2 from the card plate 2-3-1, and remove the four sets of card plates 2-3-1. When the derrick hoisting cylinder 2-2 does not need to be disassembled, disassemble the derrick 2 and the base 1.

[0095] refer to Figure 7 The transition connection block 2-1-1 is connected to the connection flange plate 2-1-3 through the first fastener 2-1-2, and the connection flange plate 2-1-3 is connected to the hydraulic top drive 3. The hydraulic top drive 3 is transported together with the derrick 2, reducing the number of transport modules. Figure 10 Schematic diagram of derrick transportation.

[0096] refer to Figure 11 After the derrick 2 is dismantled, the connecting frame 1-5-1 is hinged to the base middle plate 1-5 and the derrick hoisting cylinder 2-2. This allows the derrick hoisting cylinder connecting pin 2-3-4 to remain unchanged and be transported as a whole with the base 1, thus improving disassembly and assembly efficiency.

[0097] refer to Figure 6The flip arm 5 includes a mounting base 5-1, a lifting cylinder 5-2, a first connecting rod 5-3, a second connecting rod 5-4, a posture rod 5-5, a flip cylinder 5-6, a flip frame 5-7, and a clamping clamp device 5-8. The manipulator mounting base 5-1 is connected to the base middle plate 1-5 via a flange. One end of the first connecting rod 5-3 is hinged to the mounting base 5-1, and the other end is hinged to the posture rod 5-5. One end of the second connecting rod 5-4 is hinged to the mounting base 5-1, and the other end is hinged to the posture rod 5-5. One end of the lifting cylinder 5-2 is hinged to the mounting base 5-1, and the other end is hinged to the first connecting rod 5-3. The flip cylinder 5-6 is fixed in the middle to the posture rod 5-5, and the other end is hinged to the flip frame 5-7. The clamping clamp device 5-8 is connected to the flip frame 5-7 via a flange.

[0098] During the lowering process, the tilting arm 5 tilts the drill pipe from a low position to the center of the wellhead for connection with the hydraulic elevator 4. The power elevator 4 engages the pipe, and the tilting arm 5 releases the drill pipe, returning to its initial position. The hydraulic top drive 3 descends to connect the pipe. The roughnecks at the drill station 6 complete the pipe tie-up. The power slips 7 open, and the hydraulic top drive 3 descends, completing the lowering process.

[0099] It is worth noting that Figure 5 、 Figure 9 and Figure 14 The derrick 2 is in the extended working state. Figure 1 The vertical display in Figure 5 、 Figure 9 and Figure 14 Horizontal display in .

[0100] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0101] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "provided in", "provided with", "located in", "installed", "set", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood based on specific circumstances. "Hinged" includes "rotational connection".

[0102] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A hydraulic drilling rig, characterized in that: include, A base (1) comprises a middle plate (1-5), a bottom plate (1-9), and a lifting cylinder (1-2) respectively connected to the middle plate (1-5) and the bottom plate (1-9), wherein the bottom plate (1-9) is supported on the ground, and the lifting cylinder (1-2) is used to control the height of the middle plate (1-5); A derrick (2) connected to the middle plate (1-5) and used for pressure drilling of the drill pipe; The flip arm (5) comprises a lifting cylinder (5-2) connected to the middle plate (1-5) and a flip cylinder (5-6) connected to the lifting cylinder (5-2), wherein the flip cylinder (5-6) is used to connect to the drill pipe; the lifting cylinder (5-2) is used to drive the drill pipe to lift, and the flip cylinder (5-6) is also used to adjust the attitude of the drill pipe, and the drill pipe with the attitude adjusted is handed over to the derrick (2) for pressure drilling operation; The flip arm (5) further comprises a mounting seat (5-1) connected to the middle plate (1-5), a posture rod (5-5), a first connecting rod (5-3) and a second connecting rod (5-4); the first connecting rod (5-3) and the second connecting rod (5-4) are respectively hinged to the mounting seat (5-1); the lifting cylinder (5-2) is respectively hinged to the middle part of the first connecting rod (5-3) and the mounting seat (5-1); the posture rod (5-5) is respectively hinged to the first connecting rod (5-3) and the second connecting rod (5-4); the lifting cylinder (5-2) controls the height of the posture rod (5-5) by telescoping; The flip arm (5) further comprises a flip frame (5-7) and a clamping clamp device (5-8) for clamping the drill pipe; the flip frame (5-7) is hingedly connected to the attitude rod (5-5) and the clamping clamp device (5-8); the cylinder body of the flip oil cylinder (5-6) is fixed to the attitude rod (5-5); the piston rod of the flip oil cylinder (5-6) is hingedly connected to the flip frame (5-7); the flip oil cylinder (5-6) controls the clamping clamp device (5-8) to rotate around the attitude rod (5-5) by telescoping.

2. The hydraulic drilling rig according to claim 1, characterized in that: It also includes a derrick hoisting oil cylinder (2-2), and the derrick (2) is a foldable structure. The derrick hoisting oil cylinder (2-2) is respectively hinged to the derrick (2) and the middle plate (1-5), and the derrick hoisting oil cylinder (2-2) is used to drive the derrick (2) to fold or unfold.

3. The hydraulic drilling rig according to claim 2, characterized in that: The derrick hoisting oil cylinder (2-2) is connected to the derrick (2) via a detachable derrick hoisting oil cylinder connecting seat (2-3); The base (1) further comprises a connecting frame (1-5-1). After the derrick lifting cylinder connecting seat (2-3) is disassembled, the derrick lifting cylinder (2-2) is separated from the derrick (2). The connecting frame (1-5-1) is used to respectively connect the derrick lifting cylinder (2-2) and the middle plate (1-5) to fix the derrick lifting cylinder (2-2).

4. The hydraulic drilling rig according to claim 2, characterized in that: The base (1) also includes a derrick hoisting auxiliary support (1-3); when the derrick (2) is folded, one end of the derrick hoisting auxiliary support (1-3) is supported and connected to the derrick (2), and the other end is connected to the bottom plate (1-9) for force transmission.

5. The hydraulic drilling rig according to claim 4, characterized in that: The base (1) further includes a second auxiliary support (1-10) and a plurality of support rods (1-8), one end of the second auxiliary support (1-10) is connected to the bottom plate (1-9) for force transmission, and the second auxiliary support (1-10) is located on the side close to the folded derrick (2), and the support rods (1-8) are respectively hinged to the middle plate (1-5) and the bottom plate (1-9); the lifting cylinder (1-2) drives the middle plate (1-5) to reach a first height, and the plurality of support rods (1-8) support the middle plate (1-5) on the base (1); the lifting cylinder (1-2) drives the middle plate (1-5) to descend to a second height lower than the first height, the support rods (1-8) are folded, and the other end of the second auxiliary support (1-10) is supported and connected to the middle plate (1-5).

6. The hydraulic drilling rig according to claim 2, characterized in that: The derrick (2) further comprises a first pin shaft (2-6-2), a second section of the derrick inner section (2-6-3), and a first section of the derrick inner section (2-6-1) connected to the middle plate (1-5); the first section of the derrick inner section (2-6-1) is provided with a first section rotating ear plate (2-6-6); the second section of the derrick inner section (2-6-3) is provided with a second section rotating ear plate (2-6-4); the first section rotating ear plate (2-6-6) and the second section rotating ear plate (2-6-4) are respectively provided with corresponding fixed pin holes (2-6-8) and overlapping folding hinge holes (2-6-7); The first pin (2-6-2) is simultaneously inserted into the folding hinge holes (2-6-7) of the first rotating ear plate (2-6-6) of the inner section of the derrick and the second rotating ear plate (2-6-4) of the inner section of the derrick to achieve folding and unfolding of the derrick (2); After the derrick (2) is folded, the fixing pin holes (2-6-8) of the first rotating ear plate (2-6-6) of the inner section of the derrick and the fixing pin holes (2-6-8) of the second rotating ear plate (2-6-4) of the inner section of the derrick are overlapped with each other, and the first pin shaft (2-6-2) is simultaneously inserted into the fixing pin holes (2-6-8) of the first rotating ear plate (2-6-6) of the inner section of the derrick and the fixing pin holes (2-6-8) of the second rotating ear plate (2-6-4) of the inner section of the derrick to fix the folding of the derrick (2).

7. The hydraulic drilling rig according to claim 1, characterized in that: The base (1) further includes a derrick connection seat (1-1), and the derrick (2) further includes a connection pin matched with the derrick connection seat (1-1); The derrick connection seat (1-1) comprises a derrick connection seat lower seat (1-1-4) connected to the middle plate (1-5), a second pin shaft (1-1-3), a third pin shaft (1-1-5) and a derrick connection seat upper flap (1-1-1); the derrick connection seat upper flap (1-1-1) and the derrick connection seat lower seat (1-1-4) are hinged via the second pin shaft (1-1-3); the derrick connection seat upper flap (1-1-1) rotates around the second pin shaft (1-1-3) to engage the connection pin column; after the derrick connection seat upper flap (1-1-1) engages the connection pin column, the third pin shaft (1-1-5) is simultaneously inserted into the derrick connection seat upper flap (1-1-1) and the derrick connection seat lower seat (1-1-4) to fix the connection pin column.

8. The hydraulic drilling rig according to claim 1, characterized in that: Also included is a hydraulic top drive (3) for drilling operations; The derrick (2) comprises a derrick outer section (2-1), an inner section (2-6), a goose head (2-7) connected to the derrick outer section (2-1), a control rope (2-5) and a feed oil cylinder (2-4); the two ends of the control rope (2-5) are respectively connected to the derrick outer section (2-1) and the hydraulic top drive (3); the feed oil cylinder (2-4) is used to drive the derrick outer section (2-1) and the derrick inner section (2-6) to slide relative to each other to control the height of the goose head (2-7); the up and down movement of the goose head (2-7) synchronously controls the up and down movement of the hydraulic top drive (3) through the control rope (2-5).

9. The hydraulic drilling rig according to claim 8, characterized in that: The derrick (2) is provided with a transition connection block (2-1-1), and the hydraulic top drive (3) is provided with a connection flange plate (2-1-3). The hydraulic top drive (3) moves up and down until the connection flange plate (2-1-3) corresponds to the position of the transition connection block (2-1-1), and a first fastener (2-1-2) fixedly connects the connection flange plate (2-1-3) and the transition connection block (2-1-1) to achieve a fixed connection between the hydraulic top drive (3) and the derrick (2).

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