A drill pipe guiding device with a vibration adjustment function

Abstract

The present invention discloses a drill pipe guiding device with a vibration adjustment function, which includes an outer support cylinder; the control mechanism includes two sets of control components arranged corresponding to each other up and down. The control component includes two telescopic rods and a hydraulic cylinder; the fixed cylinder of the hydraulic cylinder is vertically fixed on the outer side wall of the outer support cylinder, and the piston rod of the hydraulic cylinder passes through the side wall of the outer support cylinder and enters its interior. One end of the piston rod away from the hydraulic cylinder has a compensation rod; the guide roller shaft includes a support shaft, mounting brackets fixed at both ends of the support shaft, and a guide roller assembly sleeved on the support shaft; the compensation rod is slidably connected to the mounting bracket, and a tension spring is sleeved on the compensation rod. Both ends of the tension spring are fixedly connected to the end of the compensation rod and the mounting bracket; the vibration detection mechanism includes a vibration detector mounted on the outer support cylinder, and the vibration detector connects its detection probes to the mounting bracket through wires respectively; the total controller is electrically connected to the control ends of the vibration detector and the hydraulic cylinder respectively.

Description

Technical Field

[0001] The present invention relates to the technical field of drill pipe guiding, and more specifically to a drill pipe guiding device with a vibration adjustment function. Background Art

[0002] A drill pipe is a steel pipe with threads at the tail, used to connect the surface equipment of a drilling rig and the drill bit or downhole device at the bottom of the well. The purpose of the drill pipe is to transport drilling mud to the drill bit and, together with the drill bit, raise, lower, or rotate the downhole device. Currently, due to the long length of the drill pipe during use and the lack of necessary guiding devices in most existing drilling rigs, the swing amount of the drill pipe is large during drilling, which easily causes jamming and damage to the drilling rig. At the same time, the excessive swing amount of the drill pipe also affects the accuracy of the borehole, bringing trouble to the drilling work.

[0003] Publication No. CN110469264B discloses a drill pipe guiding device that can be applied to drill pipes of different sizes and can guide the drill pipe and reduce the swing amount during drilling. The overall adjustment is through a lead screw and a handwheel, and the adjustment method is simple and convenient to operate. Two support plates are placed opposite to each other and are parallel to each other. Connecting sleeves are respectively arranged at the bottom of both sides of the support plates, and the connecting sleeves on the two support plates correspond one by one. One end of the lead screw is rotatably placed in the connecting sleeve on one side of one support plate, and the other end of the lead screw passes through the corresponding connecting sleeve on the side of the other support plate. The outer side surface of one end of the lead screw is a smooth surface, and the lead screw and the connecting sleeve on the other support plate are connected by threads. A handwheel is arranged at the other end of the lead screw. One end of the slide rail is fixedly placed in the connecting sleeve on the other side of one support plate. This device can guide and position the drilling rig, reduce the swing amount of the drill pipe, and ensure the borehole accuracy.

[0004] However, in actual use, the drill pipe is in a continuous working state and will be in a continuous swinging state. Although the guiding device of the above patent can guide and limit it, due to the influence of various accidental working conditions, sudden swinging problems will continue to occur. And the uncontrollable swinging for a long time will also cause deformation of the guiding device and even final failure. As shown in the above patent, if the support structure controlled by the hydraulic cylinder does not make any adjustment actions under the long-term vibration effect, it will eventually lead to the failure (oil leakage or deformation) of the hydraulic cylinder, which is very disadvantageous in use.

[0005] Therefore, how to provide a drill pipe guiding device that can timely and effectively adjust the vibration when the drill pipe has a sudden swing is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0006] In view of this, the present invention provides a drill pipe guiding device with a vibration adjustment function, aiming to solve the above technical problems.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] A drill pipe guiding device with a vibration adjustment function, comprising:

[0009] An outer support cylinder; the bottom of the outer support cylinder has a radially protruding mounting flange along the outer side wall;

[0010] A regulation mechanism; the number of the regulation mechanisms is at least three groups, and they are circumferentially distributed on the side wall of the outer support cylinder; the regulation mechanism includes two groups of regulation components arranged corresponding to each other up and down, and each regulation component includes two telescopic rods and a hydraulic cylinder; one end of each of the two telescopic rods is hinged to the inner side wall of the outer support cylinder, the hydraulic cylinder is arranged between the two telescopic rods, the fixed cylinder of the hydraulic cylinder is vertically fixed on the outer side wall of the outer support cylinder, the piston rod of the hydraulic cylinder passes through the side wall of the outer support cylinder and enters its interior, and the end of the piston rod away from the hydraulic cylinder has a compensation rod;

[0011] A guiding roller shaft; the number of the guiding roller shafts is the same as the number of the regulation mechanisms; the guiding roller shaft includes a support shaft, mounting brackets fixed at both ends of the support shaft, and a guiding roller assembly sleeved on the support shaft; the two mounting brackets are respectively connected to the two groups of regulation components of the regulation mechanism, one end of each of the two telescopic rods of each regulation component away from the outer support cylinder is hinged to the mounting bracket, the compensation rod is slidably connected to the mounting bracket, a tension spring is sleeved on the compensation rod, and both ends of the tension spring are fixedly connected to the end of the compensation rod and the mounting bracket;

[0012] A vibration detection mechanism; the vibration detection mechanism includes a vibration detector mounted on the outer support cylinder, and the vibration detector connects its detection probes to the mounting brackets through wires;

[0013] A total controller; the total controller is electrically connected to the control ends of the vibration detector and the hydraulic cylinder respectively.

[0014] Through the above technical solution, the drill pipe guiding device provided by the present invention abandons the previous rigid support guiding structure and adopts the coordinated cooperation of the master controller, the vibration detection mechanism and the hydraulic cylinder. When the vibration detection mechanism detects that the vibration frequency of a certain guiding roller shaft is relatively large and the maintenance time is relatively long, it will control the hydraulic cylinder to contract by a fixed stroke. Due to the action of the tension spring, the guiding roller shaft will not suddenly leave the drill pipe, resulting in a greater deviation of the drill pipe. After the hydraulic cylinder contracts and then extends, it will re-clamp the drill pipe to complete an operation of releasing and re-guiding. The main effect of this operation is reflected in that firstly, it avoids the structural impact on the guiding device caused by excessive vibration, and then re-clamps and guides to overcome the swing of the drill pipe. During the repeated telescopic operation of the hydraulic cylinder, the redundant swing force of the drill pipe is released, enabling it to quickly return to its position, avoiding the problem that the swing force cannot be released and the drill pipe cannot be reset in time due to rigid guiding.

[0015] Preferably, in the above drill pipe guiding device with a vibration adjustment function, the mounting frame includes a support disk fixed to the support shaft. A vertical plate is fixed on the support disk, and a hinge plate is vertically fixed on the vertical plate. The ends of the two telescopic rods are rotationally connected between the hinge plate and the support disk through a pin shaft. A connection hole for movably connecting with the compensation rod is formed in the part of the vertical plate above the hinge plate. By setting the structure of the vertical plate and the hinge plate, positions can be provided for the telescopic rod and the piston rod to be connected, and position interference between the two is prevented. In the present invention, the hydraulic cylinder mainly plays a role in adjusting the position of the guiding roller shaft so that it can adapt to drill pipes of different diameters, and the telescopic rod mainly plays a role in supporting the guiding roller shaft, making the stability of the guiding roller shaft stronger.

[0016] Preferably, in the above drill pipe guiding device with a vibration adjustment function, a triangular rib plate is fixed between the side of the vertical plate facing away from the hinge plate and the support disk. Since the final supporting force of the guiding roller shaft acts on the vertical plate, triangular rib plates are added to the vertical plate for reinforcement to improve its structural strength.

[0017] Preferably, in the above drill pipe guiding device with a vibration adjustment function, the end of the compensation rod has a radially protruding limit block, and the two ends of the tension spring are fixedly connected to the vertical plate and the limit block. The function of the tension spring can make the distance between the vertical plate and the limit block closer. When the limit block is far away from the drill pipe, under the action of the tension spring, the vertical plate will approach the drill pipe, so that the guiding roller shaft can still maintain a certain elastic force to guide the drill pipe, and can adapt to the guiding in cooperation with the swing of the drill pipe to prevent the drill pipe from swinging too much.

[0018] Preferably, in the above-mentioned drill pipe guiding device with vibration adjustment function, the outer diameter of the piston rod is greater than the aperture of the connecting hole, and the aperture of the connecting hole is greater than the outer diameter of the compensating rod. Through the above size settings, the structural installation can meet the requirements.

[0019] Preferably, in the above-mentioned drill pipe guiding device with vibration adjustment function, the guiding roller assembly includes a plurality of sleeves slidably connected to the support shaft. A guiding roller is rotatably connected to the outside of the sleeve through a bearing, and the guiding roller is used to fit with the drill pipe; springs sleeved on the support shaft are arranged between adjacent guiding rollers and between the guiding roller and the mounting frame. The guiding roller assembly provided by the present invention is different from the traditional integral roller structure. It adopts a split multi-roller structure and realizes elastic movable series connection through springs. The design advantage of this structure is that when the drill pipe is working, it will not only rotate but also move axially. In order to overcome the friction force of axial movement, the multiple guiding rollers provided by the present invention can adaptively move along with the axial movement of the drill pipe, and at the same time, due to the action of the spring elasticity, it will gradually reset. In this way, it can overcome the damage of the guiding device caused by instantaneous axial movement and can also prevent the axial resistance to the drill pipe, and the use effect is better.

[0020] Preferably, in the above-mentioned drill pipe guiding device with vibration adjustment function, the outer diameter of the guiding roller is greater than the outer diameter of the mounting frame. It can enable the guiding roller to avoid interference from other structures and can stably cooperate with the drill pipe.

[0021] Preferably, in the above-mentioned drill pipe guiding device with vibration adjustment function, the outer support cylinder is two half shells axially separated, and the two half shells are tightly connected through an edge connecting plate and bolts. When the device needs to be installed from the outside of the drill pipe, it can be disassembled and reassembled.

[0022] Preferably, in the above-mentioned drill pipe guiding device with vibration adjustment function, the mounting flange has flange holes. The flange holes can be fixed on the ground or cooperate with the installation plane for installation.

[0023] Preferably, in the above-mentioned drill pipe guiding device with vibration adjustment function, the number of the control mechanisms is four groups and is arranged in a cross shape. The number is reasonable and the structural stability is strong. Description of the Drawings

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0025] Figure 1 The attached drawing is the top view of the drill pipe guiding device provided by the present invention;

[0026] Figure 2 The attached drawing is the front view of the drill pipe guiding device provided by the present invention;

[0027] Figure 3 The attached drawing is the schematic diagram of the drill pipe guiding device provided by the present invention for guiding the drill pipe;

[0028] Figure 4 The attached drawing is the schematic diagram of the drill pipe guiding device provided by the present invention for regulating the drill pipe;

[0029] Figure 5 The attached drawing is provided by the present invention Figure 3 The enlarged view of the partial A;

[0030] Figure 6 The attached drawing is provided by the present invention Figure 4 The enlarged view of the partial B;

[0031] Figure 7 The attached drawing is the schematic diagram of the normal state of the guide roller assembly provided by the present invention;

[0032] Figure 8 The attached drawing is the schematic diagram of the displacement state of the guide roller assembly provided by the present invention;

[0033] Figure 9 The attached drawing is the schematic diagram of the guide roller provided by the present invention.

[0034] Wherein:

[0035] 1 - Outer support cylinder;

[0036] 11 - Mounting flange; 111 - Flange hole; 12 - Half shell; 13 - Edge connecting plate; 14 - Bolt;

[0037] 2 - Regulation mechanism;

[0038] 21 - Regulation component; 211 - Telescopic rod; 212 - Hydraulic cylinder; 2121 - Fixed cylinder; 2122 - Piston rod; 213 - Compensation rod; 214 - Limit block; 22 - Pull spring;

[0039] 3 - Guide roller shaft;

[0040] 31 - Support shaft; 32 - Mounting frame; 321 - Support disk; 322 - Vertical plate; 323 - Hinge plate; 324 - Triangular rib plate; 33 - Guide roller assembly; 331 - Sleeve; 332 - Bearing; 333 - Guide roller; 334 - Spring;

[0041] 4 - Vibration detection mechanism;

[0042] 41 - Vibration detector; 42 - Conducting wire;

[0043] 5 - Total controller;

[0044] 6 - Drill pipe. Specific implementation mode

[0045] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0046] See attached Figure 1 to attached Figure 6 As shown in the figures, the embodiments of the present invention disclose a drill pipe guiding device with a vibration adjustment function, including:

[0047] Outer support cylinder 1; the outer side wall of the bottom edge of the outer support cylinder 1 has a radially protruding mounting flange 11;

[0048] Regulating mechanism 2; the number of the regulating mechanisms 2 is at least three groups, and they are circumferentially distributed on the side wall of the outer support cylinder 1; the regulating mechanism 2 includes two groups of regulating components 21 arranged corresponding to each other up and down, and each regulating component 21 includes two telescopic rods 211 and a hydraulic cylinder 212; one ends of the two telescopic rods 211 are hinged to the inner side wall of the outer support cylinder 1, the hydraulic cylinder 212 is arranged between the two telescopic rods 211, the fixed cylinder 2121 of the hydraulic cylinder 212 is vertically fixed on the outer side wall of the outer support cylinder 1, the piston rod 2122 of the hydraulic cylinder 212 passes through the side wall of the outer support cylinder 1 and enters its interior, and one end of the piston rod 2122 away from the fixed cylinder 2121 has a compensation rod 213;

[0049] The guiding roller shaft 3; the number of guiding roller shafts 3 is the same as the number of the regulating mechanisms 2; the guiding roller shaft 3 includes a support shaft 31, mounting brackets 32 fixed at both ends of the support shaft 31, and a guiding roller assembly 33 sleeved on the support shaft 31; the two mounting brackets 32 are respectively connected to two groups of regulating components 21 of the regulating mechanism 2, and the ends of the two telescopic rods 211 of each group of regulating components 21 far away from the outer support cylinder 1 are hinged to the mounting bracket 32, the compensating rod 213 is slidably connected to the mounting bracket 32, a tension spring 22 is sleeved on the compensating rod 213, and both ends of the tension spring 22 are fixedly connected to the end of the compensating rod 213 and the mounting bracket 32;

[0050] The vibration detection mechanism 4; the vibration detection mechanism 4 includes a vibration detector 41 mounted on the outer support cylinder 1, and the vibration detector 41 connects its detection probes to the mounting bracket 32 respectively through a wire 42;

[0051] The total controller 5; the total controller 5 is electrically connected to the control ends of the vibration detector 41 and the hydraulic cylinder 212 respectively.

[0052] See the appendix Figure 5 and the appendix Figure 6 As shown in the appendix, the mounting bracket 32 includes a support disk 321 fixed to the support shaft 31, a vertical plate 322 is fixed on the support disk 321, a hinge plate 323 is vertically fixed on the vertical plate 322, and the ends of the two telescopic rods 211 are rotationally connected between the hinge plate 323 and the support disk 321 through a pin shaft. A connection hole for movably connecting with the compensating rod 213 is formed in the part of the vertical plate 322 above the hinge plate 323.

[0053] To further optimize the above technical solution, a triangular rib plate 324 is fixed between the side of the vertical plate 322 facing away from the hinge plate 323 and the support disk 321.

[0054] To further optimize the above technical solution, the end of the compensating rod 213 has a radially protruding limit block 214, and both ends of the tension spring 22 are fixedly connected to the vertical plate 322 and the limit block 214.

[0055] To further optimize the above technical solution, the outer diameter of the piston rod 2122 is larger than the aperture of the connection hole, and the aperture of the connection hole is larger than the outer diameter of the compensating rod 213.

[0056] See the appendix Figure 7 to the appendix Figure 9 As shown in the appendix, the guiding roller assembly 33 includes a plurality of sleeves 331 slidably connected to the support shaft 31, a guiding roller 333 is rotatably connected to the outside of the sleeve 331 through a bearing 332, and the guiding roller 333 is used to be in contact with the drill pipe 6; springs 334 sleeved on the support shaft 31 are arranged between adjacent guiding rollers 333 and between the guiding roller 333 and the mounting bracket 32.

[0057] To further optimize the above technical solution, the outer diameter of the guide roller 333 is larger than the outer diameter of the mounting bracket 32.

[0058] To further optimize the above technical solution, the outer support cylinder 1 is composed of two axially separated half shells 12, and the two half shells 12 are tightly connected by an edge connecting plate 13 and bolts 14.

[0059] To further optimize the above technical solution, the mounting flange 11 is provided with flange holes 111.

[0060] In this embodiment, the number of the regulating mechanisms 2 is four groups, and they are arranged in a cross-shaped intersection.

[0061] When the drill pipe 6 is normally guided, the piston rod 2122 of the hydraulic cylinder 212 extends, driving the guide roller shaft 3 to move closer to the drill pipe 6, and the telescopic rod 211 cooperates to perform telescopic movement. When all four sets of guide roller shafts 3 are in contact with the side wall of the drill pipe 6, the hydraulic cylinder 212 stops operating. As Figure 3 and Figure 5 shown, at this time, the guide rollers 333 are all in hard contact with the side wall of the drill pipe 6, and the end of the piston rod 2122 abuts against the vertical plate 322.

[0062] After the drill pipe 6 enters normal operation, the total controller 5 sets the telescopic amount for vibration regulation of the hydraulic cylinder 212, and the set telescopic value is less than the length of the compensation rod 213. The total controller 5 receives the frequency detection data transmitted by the vibration detector 41. Here, the abnormal frequency value and the generation time of the abnormal frequency value can be set. When the frequency detection value reaches the abnormal frequency value range and remains for more than the corresponding time, the hydraulic cylinder 212 is activated, and the hydraulic cylinder 212 performs a telescopic action. When the hydraulic cylinder 212 contracts, the tension spring 22 starts to act, so that the guide roller 333 can still be in contact with the drill pipe 6. At this time, the contact between the guide roller 333 and the drill pipe 6 is elastic contact. As Figure 4 and Figure 6 shown, although the piston rod 2122 retracts, due to the action of the tension spring 22, the guide roller 333 can still be in elastic contact with the drill pipe 6, imposing a certain restriction on the drill pipe. After the hydraulic cylinder 212 finishes contracting, it extends again, re-imposing a hard guiding restriction on the drill pipe 6. By releasing the swinging force of the drill pipe 6 and then re-clamping and guiding, damage to the guiding device can be avoided, and the swinging force of the drill pipe 6 can also be quickly overcome.

[0063] As Figure 7 shown, under the action of the spring 334, the guide rollers 333 are evenly distributed on the support shaft 31.

[0064] As Figure 8As shown, due to the instantaneous axial movement of the drill pipe 6, the guide roller 333 compresses the spring 334 to generate displacement, coordinating with the movement of the drill pipe 6. After the instantaneous axial displacement of the drill pipe 6 is completed, under the action of the spring 334, the guide roller 333 gradually resets.

[0065] Moreover, for the multiple guide roller 333 structures of the design cost embodiment, they can also be replaced according to the wear condition, without the need to replace the entire roller body as in the prior art, thus saving costs.

[0066] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and reference can be made to the description in the method part for relevant parts.

[0067] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A drill pipe guiding device with a vibration adjustment function, characterized in that, Comprising: An outer support cylinder; The bottom edge of the outer support cylinder has a radially protruding mounting flange on the outer sidewall; A regulating mechanism; The number of the regulating mechanisms is at least three groups, and they are circumferentially distributed on the sidewall of the outer support cylinder; the regulating mechanism includes two groups of regulating components arranged corresponding to each other up and down, and each regulating component includes two telescopic rods and a hydraulic cylinder; one ends of the two telescopic rods are hinged to the inner sidewall of the outer support cylinder, the hydraulic cylinder is arranged between the two telescopic rods, the fixed cylinder of the hydraulic cylinder is vertically fixed on the outer sidewall of the outer support cylinder, the piston rod of the hydraulic cylinder passes through the sidewall of the outer support cylinder and enters its interior, and one end of the piston rod away from the hydraulic cylinder has a compensation rod; A guiding roller shaft; the number of the guiding roller shafts is the same as the number of the regulating mechanisms; the guiding roller shaft includes a support shaft, mounting brackets fixed at both ends of the support shaft, and a guiding roller assembly sleeved on the support shaft; the two mounting brackets are respectively connected to the two groups of regulating components of the regulating mechanism, one ends of the two telescopic rods of each group of regulating components away from the outer support cylinder are hinged to the mounting bracket, the compensation rod is slidably connected to the mounting bracket, a tension spring is sleeved on the compensation rod, and both ends of the tension spring are fixedly connected to the end of the compensation rod and the mounting bracket; A vibration detection mechanism; the vibration detection mechanism includes a vibration detector mounted on the outer support cylinder, and the vibration detector connects its detection probes to the mounting bracket through wires; A total controller; the total controller is electrically connected to the control ends of the vibration detector and the hydraulic cylinder respectively; The mounting bracket includes a support disk fixed to the support shaft, a vertical plate is fixed on the support disk, a hinge plate is vertically fixed on the vertical plate, and the ends of the two telescopic rods are rotatably connected between the hinge plate and the support disk through a pin shaft, and a connection hole for movably connecting with the compensation rod is formed in the part of the vertical plate above the hinge plate; The guiding roller assembly includes a plurality of sleeves slidably connected to the support shaft, a guiding roller is rotatably connected to the outside of the sleeve through a bearing, and the guiding roller is used for fitting with a drill pipe; springs sleeved on the support shaft are arranged between adjacent guiding rollers and between the guiding roller and the mounting bracket; 2. The drill pipe guiding device with a vibration adjustment function according to claim 1, characterized in that, A triangular rib plate is fixed between the side of the vertical plate facing away from the hinge plate and the support disk; 3. A drill pipe guiding device with a vibration adjustment function according to claim 1, characterized in that, The end of the compensation rod has a radially protruding limit block, and both ends of the tension spring are fixedly connected to the vertical plate and the limit block; 4. The drill pipe guiding device with a vibration adjustment function according to claim 3, characterized in that, The outer diameter of the piston rod is larger than the aperture of the connection hole, and the aperture of the connection hole is larger than the outer diameter of the compensation rod; 5. A drill pipe guiding device with a vibration adjustment function according to claim 1, characterized in that, The outer diameter of the guiding roller is larger than the outer diameter of the mounting bracket; 6. The drill pipe guiding device with a vibration adjustment function according to claim 1, characterized in that, The outer support cylinder is two semi - shells separated axially, and the two semi - shells are tightly connected by an edge connecting plate and bolts; 7. A drill pipe guiding device with a vibration adjustment function according to claim 1, characterized in that, The mounting flange has flange holes; 8. The drill pipe guiding device with a vibration adjustment function according to claim 1, characterized in that, The number of the regulating mechanisms is four groups, and they are arranged in a cross - shaped intersection.

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