A new type of vibrating cementing tool

By designing a new type of vibration cementing tool, cementing operations with controllable vibration frequency and time were achieved, solving the problems of poor vibration effect and complex construction of existing tools, and improving cementing quality and construction safety.

CN120042507BActive Publication Date: 2026-03-17CNPC BOHAI DRILLING ENG +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-11-27
Publication Date
2026-03-17

AI Technical Summary

Technical Problem

Existing vibratory cementing tools have poor vibration effects, poor frequency controllability, uncontrollable vibration time, and small internal circulation channels, which can easily cause blockage of the grouting channels and device failure. In addition, the construction cost is high, the process is complicated, and there is a risk of breakage and falling into the well.

Method used

A novel vibration cementing tool was designed, comprising an upper connector assembly, a triggering and starting assembly, a control assembly, a power assembly, a vibration assembly, and a rotary guide assembly. The control circuit board is triggered by a mechanical plunger-type limit switch to achieve controllable vibration of motor speed from 0 r/min to 1400 r/min. The excitation force is adjusted by combining an eccentric block assembly. The rotary guide assembly adopts a tongue-driven impeller pressurization rotation to clean the wellbore.

Benefits of technology

It improved cement slurry displacement efficiency, improved cement sheath bonding, ensured smooth casing installation, reduced drilling fluid shear stress, improved cementing quality, reduced equipment failure risk, and lowered construction costs.

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Abstract

This invention belongs to the field of energy exploration, specifically relating to a novel vibratory cementing tool designed to solve problems such as poor frequency controllability and uncontrollable vibration time in existing conventional electric vibratory tools. The invention includes an upper connector assembly, one end of which is detachably and fixedly connected to the vibratory cementing tool body, and the other end of which is detachably and fixedly connected to a triggering and starting assembly; a control assembly, disposed on one side of the other end of the triggering and starting assembly and fixed to a power assembly; a power assembly, disposed below and fixed to the control assembly; a vibration assembly, disposed below and fixed to the power assembly; and a rotary guide assembly, disposed below the vibration assembly and detachably and fixedly connected to the inner surface of the vibratory cementing tool body. This invention reduces drilling fluid shear force, removes cement cake from the cementing surface, improves cement slurry displacement efficiency, and the generated vibration waves propagate longitudinally, allowing for more thorough contact between the cement slurry and the wellbore and casing.
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Description

Technical Field

[0001] This invention belongs to the field of energy exploration, and specifically relates to a novel vibration cementing tool. Background Technology

[0002] Wellbore construction is the most crucial task in oil and gas drilling and development engineering, and its quality directly affects the success or failure of the drilling operation. Casing and cementing operations are important technical aspects of wellbore construction, key to ensuring the integrity of the oil and gas wellbore and extending its service life. Therefore, the quality of these operations directly impacts the normal progress of oil and gas field development and resource extraction.

[0003] With the increasing prevalence of deviated wells, conventional casing running methods are highly susceptible to obstruction due to improper operation. Highly deviated or horizontal wells have long open-hole sections and irregular boreholes, resulting in significant frictional torque during casing run-in. The lifting and lowering operations frequently used in conventional casing running operations impose substantial axial impact loads on the casing, making it difficult to ensure smooth casing string installation and greatly increasing the risk of casing deformation during subsequent fracturing.

[0004] If the cement slurry fails to completely fill the annular space to be cemented during cementing operations, or fails to form a high-quality and complete cement ring that bonds well with the formation and casing of the cementing section, it will lead to poor cementing quality, unsatisfactory interlayer sealing, and frequent cross-contamination of oil, gas, and water between layers.

[0005] To avoid poor cement sheath bonding, loose filling, and voids caused by wellbore curvature or large inclination, casing misalignment, and low displacement efficiency, vibratory cementing technology is often used. This technology ensures dense and homogeneous cement sheaths and adequate compaction, improving cementing quality. However, existing vibratory cementing tools are diverse and have many drawbacks: they require control via surface wellhead equipment, resulting in high construction costs and limited application effects; they require cable installation, making the process cumbersome, and the cables have poor reliability, posing a risk of breakage and falling into the well during installation; downhole hydraulic vibratory tools have limited propagation distance and poor vibration effect; conventional electric vibratory tools have poor frequency controllability and uncontrollable vibration time, and their small internal circulation channels easily cause blockage of the grouting channels and device failure, leading to cementing failure.

[0006] Based on this, the present invention proposes a novel vibration cementing tool. Summary of the Invention

[0007] To address the aforementioned problems in the prior art, namely poor vibration effect, poor frequency controllability and uncontrollable vibration time in conventional electric vibration tools, and small internal circulation channels that easily cause grouting channel blockage and device failure, this invention provides a novel vibration cementing tool, comprising an upper connector assembly, a triggering and starting assembly, a control assembly, a power assembly, a vibration assembly, a rotary guide assembly, and a vibration cementing tool body.

[0008] One end of the upper connector assembly is detachably and fixedly connected to the vibratory cementing tool body, and the other end of the upper connector assembly is detachably and fixedly connected to the trigger start assembly;

[0009] The control component is disposed on one side of the other end of the trigger start component, and the control component is fixed to the power component; the power component is disposed below the control component and fixed.

[0010] The vibration component is disposed below the power component and is fixed to the power component;

[0011] The rotary guide assembly is positioned below the vibration assembly and is detachably and fixedly connected to the inner surface of the vibration cementing tool body.

[0012] In some preferred embodiments, the upper connector assembly includes an upper connector body and an upper connector sealing ring;

[0013] The upper connector body is threadedly connected to the vibratory cementing tool body via the upper connector sealing ring.

[0014] In some preferred embodiments, the triggering assembly includes a rubber stopper seat, a rubber stopper seat sealing ring, a flow guide seat, a push rod, a disc spring, a push rod seat, a spring, a limit switch trigger rod, a limit switch baffle, a limit switch, a flow guide chamber, and a flow guide chamber sealing ring;

[0015] The rubber plug seat is threadedly connected to the upper connector body and sealed by the rubber plug seat sealing ring. The rubber plug seat contains a cementing rubber plug that can move along it.

[0016] The rubber stopper seat is coaxially fixed to one end of the flow guide seat, the other end of the flow guide seat is fixed to one end of the disc spring, and the other end of the disc spring is fixed to the flow guide chamber body;

[0017] The push rod, the push rod seat, the spring, the limit switch trigger rod, the limit switch baffle, and the limit switch are located inside the rubber plug seat, the flow guide seat, and the flow guide chamber; the flow guide chamber is sealed to the vibratory cementing tool body through the flow guide chamber sealing ring;

[0018] The cementing plug can overlap with one end of the push rod, the push rod is disposed in the push rod seat and moves along it, the push rod seat is fixed to the flow guide chamber, the other end of the push rod is fixed to one end of the spring, and the other end of the spring is fixed to the limit switch baffle.

[0019] The other end of the push rod is connected to the limit switch trigger rod, which moves along its axial direction; the limit switch trigger rod is used to actuate the limit switch baffle, which is fixed to the inner end face of the flow guide chamber; the limit switch baffle is used to control the on / off state of the limit switch; and the limit switch is used to control the on / off state of the control component.

[0020] In some preferred embodiments, the control component includes a control circuit board and a control circuit housing;

[0021] The control circuit board is connected to the forming switch, the control circuit board is fixed to the control circuit housing, and the control circuit housing is fixed to the power component;

[0022] The components installed on the control circuit board include a motor control circuit switch, a charging control circuit switch, a battery pack control circuit switch, a trigger circuit switch, a control circuit processor, control switch I, and control switch II.

[0023] The motor control circuit switch is used to control the start and stop of the vibration component; the charging control circuit switch is used to control the start and stop of charging the power battery; the battery pack control circuit switch is used to control the start and stop of power supply to the power battery; the trigger circuit switch is used to control the connection and disconnection of the circuit board; the control circuit processor is used to provide signal output for vibration start and stop, and algorithm settings for vibration time and vibration frequency; control switch I and control switch II are backup switches.

[0024] In some preferred embodiments, the power assembly includes a power battery frame, a power battery casing, and a power battery base plate;

[0025] Multiple sets of the power battery skeleton are evenly arranged along the axial direction of the vibratory cementing tool body and connected to each other, and are disposed inside the power battery shell. The upper and lower ends of the power battery shell are fixed to the power battery base plate, and the power battery base plate is fixed to the control circuit chamber and the vibration component respectively.

[0026] In some preferred embodiments, the vibration assembly comprises a motor housing, an upper sealing ring for the motor housing, a coupling, a drive shaft, bolts, a flat keyway, a fixed eccentric block, a self-aligning eccentric block, a lower sealing ring for the motor housing, a nut, a ball bearing, a shaft retaining ring, a vibration chamber, and a motor.

[0027] The power battery base plate is fixed to the motor housing by a sealing ring on the motor housing. The motor is fixed inside the motor housing. The output shaft of the motor is coaxially fixed to the transmission shaft by the coupling. A flat keyway is provided on the outer circumference of the transmission shaft. The transmission shaft is keyed to the fixed eccentric block by the flat keyway. The fixed eccentric block is adjustable and fixed to the self-aligning eccentric block by the bolts and nuts.

[0028] The bottom end of the drive shaft is sealed to the bottom end of the motor housing by the shaft retaining ring;

[0029] The motor housing is threadedly connected to the vibration chamber and sealed by a lower sealing ring on the motor housing. A ball bearing is installed at the lower end of the vibration chamber and is connected to the drive shaft bearing.

[0030] In some preferred embodiments, the rotary guide assembly includes a back pressure valve, a baffle, a ball bearing, an impeller, a connecting sleeve, a thrust bearing, an eccentric guide head, and a body;

[0031] The body is threadedly connected to the inner surface of the vibratory cementing tool body, the back pressure valve is threadedly connected to the inner surface of the body, the baffle is fixed to the lower end of the back pressure valve and is provided with a flow channel, and the baffle is connected to the impeller by a ball bearing.

[0032] A connecting sleeve is installed at the lower end of the impeller, and the connecting sleeve is connected to the eccentric guide head through the thrust bearing.

[0033] In some preferred embodiments, the limit switch is used to control the control circuit processor on the control circuit board to send a vibration start signal.

[0034] In some preferred embodiments, the speed range of the motor is 0 r / min to 1400 r / min.

[0035] In some preferred embodiments, the self-aligning eccentric block and the fixed eccentric block have multiple threaded holes at preset positions, and the eccentric block combinations with different angles are formed by connecting the different threaded holes of the bolt and the nut.

[0036] The beneficial effects of this invention are:

[0037] (1) This invention comprises an upper connector, a trigger-start assembly, a control assembly, a power assembly, a vibration assembly, a rotary guide assembly, and a vibratory cementing tool body. During casing installation, the rotary guide mechanism ensures the casing is smoothly and safely lowered to the predetermined depth. During cementing operations, when the cement plug descends to the trigger-start assembly during displacement, it presses against the plug seat and depresses the starting linkage, activating the control system circuit. The power battery provides power to rotate the motor, with a speed range of 0 r / min to 1400 r / min, driving the eccentric assembly to rotate. Through control circuit board algorithm design and time clock design, continuous vibration occurs at the designed amplitude and frequency points. This invention allows for the setting of vibration time and frequency according to the actual requirements of cementing site operations.

[0038] (2) The present invention provides a novel vibration cementing tool, which mainly includes a vibration mechanism and a rotary guide mechanism. During the cementing construction and replacement process, the vibration mechanism applies vibration waves to the cement slurry, causing the annular medium to vibrate, thereby reducing the shear force of the drilling fluid, removing the mud cake on the cementing surface, and improving the cement slurry replacement efficiency. At the same time, the generated vibration waves propagate longitudinally, thereby making the cement slurry more fully contacted with the well wall and casing, improving the cementing condition of the first and second interfaces, and improving the cementing quality.

[0039] (3) The rotary guiding mechanism, at the lowest end of the tool, has an internal back pressure valve driven by a tongue plate. During the casing circulation process, the impeller pressurizes the valve, driving the guide shoe head to rotate at high speed, guiding the drilling fluid to form a high-speed rotating vortex, cleaning or trimming the wellbore and casing wall. The guide head is eccentric, and when the casing string encounters resistance during lowering, it can move up and down, changing direction from the guide rotating head, thus more effectively guiding the casing string into the well. The guide shoe head is equipped with a high-efficiency thrust bearing to reduce rotational resistance. Attached Figure Description

[0040] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0041] Figure 1 This is a schematic diagram of the overall structure of a novel vibratory cementing tool according to the present invention;

[0042] Figure 2 This is a schematic diagram of the upper connector structure of a novel vibratory cementing tool according to the present invention;

[0043] Figure 3 This is a schematic diagram of the triggering and starting assembly of a novel vibration cementing tool according to the present invention;

[0044] Figure 4 This is a schematic diagram of the control component of a novel vibration cementing tool according to the present invention;

[0045] Figure 5 This is a schematic diagram of the power assembly of a novel vibratory cementing tool according to the present invention;

[0046] Figure 6 This is a schematic diagram of the structure of the vibration assembly of a novel vibration cementing tool according to the present invention;

[0047] Figure 7 This is a schematic diagram of the rotary guide assembly of a novel vibration cementing tool according to the present invention. Detailed Implementation

[0048] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0049] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0050] like Figures 1-7 As shown, see Figure 1 The present invention provides a novel vibration cementing tool, comprising an upper connector assembly 1, a triggering and starting assembly 2, a control assembly 3, a power assembly 4, a vibration assembly 5, a rotary guide assembly 6, and a vibration cementing tool body 7;

[0051] One end of the upper connector assembly 1 is detachably and fixedly connected to the vibratory cementing tool body 7, and the other end of the upper connector assembly 1 is detachably and fixedly connected to the trigger start assembly 2.

[0052] The control component 3 is disposed on one side of the other end of the trigger start component 2, and the control component 3 is fixed to the power component 4; the power component 4 is disposed below the control component 3 and fixed.

[0053] The vibration component 5 is disposed below the power component 4 and is fixed to the power component 4;

[0054] The rotary guide assembly 6 is disposed below the vibration assembly 5 and is detachably and fixedly connected to the inner surface of the vibration cementing tool body 7.

[0055] Preferred, see Figure 1 , Figure 2 The upper connector assembly 1 includes an upper connector body 101 and an upper connector sealing ring 102;

[0056] The upper connector body 101 is threadedly connected to the vibratory cementing tool body 7 via the upper connector sealing ring 102.

[0057] Preferred, see Figure 3 The triggering and starting assembly 2 includes a rubber stopper seat 201, a rubber stopper seat sealing ring 202, a flow guide seat 203, a push rod 204, a disc spring 205, a push rod seat 206, a spring 207, a limit switch trigger rod 208, a limit switch baffle 209, a limit switch 210, a flow guide chamber 211, and a flow guide chamber sealing ring 212;

[0058] The rubber plug seat 201 is threadedly connected to the upper connector body 101 and is sealed by the rubber plug seat sealing ring 202. The rubber plug seat 201 is provided with a cementing rubber plug that can move along it.

[0059] The rubber stopper seat 201 is coaxially fixed to one end of the flow guide seat 203, the other end of the flow guide seat 203 is fixed to one end of the disc spring 205, and the other end of the disc spring 205 is fixed to the flow guide chamber 211;

[0060] The push rod 204, the push rod seat 206, the spring 207, the limit switch trigger rod 208, the limit switch baffle 209, and the limit switch 210 are located inside the rubber plug seat 201, the flow guide seat 203, and the flow guide chamber 211; the flow guide chamber 211 is sealed to the vibratory cementing tool body 7 through the flow guide chamber sealing ring 212.

[0061] The cementing plug can overlap with one end of the push rod 204. The push rod 204 is disposed in the push rod seat 206 and moves along it. The push rod seat 206 is fixed to the flow guide chamber 211. The other end of the push rod 204 is fixed to one end of the spring 207. The other end of the spring 207 is fixed to the limit switch baffle 209.

[0062] The other end of the push rod 204 is connected to the limit switch trigger rod 208, which moves along its axial direction. The limit switch trigger rod 208 is used to actuate the limit switch baffle 209, which is fixed to the inner end face of the flow guide chamber 211. The limit switch baffle 209 is used to control the on / off state of the limit switch 210, which is used to control the on / off state of the control component 3.

[0063] When the cementing plug is seated in the plug seat 201, it will simultaneously press down the push rod 204. The push rod 204 surrounds the push rod seat 206. The limit switch trigger rod 208 is located below the push rod 204. The push rod 204 presses down to contact the limit switch trigger rod 208, compressing the spring 207, causing the limit switch trigger rod 208 to move downward, which will actuate the limit switch baffle 209 and trigger the limit switch 210 to open. The guide chamber 211 has a flow channel to guide the drilling fluid or cement slurry to flow downward to both sides, and the seal is completed by the guide chamber sealing ring 212.

[0064] The flow guide seat 203 is a sloping flow-through structure that guides the rubber plug head into it. A charging port and a Bluetooth communication port are provided on the side, enabling battery charging and Bluetooth control functions. The rubber plug seat 201 has a concave structure with a slotted anti-rotation structure, preventing the rubber plug from rotating after it is seated, facilitating later drilling and removal. The trigger start component 2 is a rod-type swing arm structure; the limit switch trigger rod 208 swings downwards to activate the device. The limit switch 210 of the start device is connected to the control circuit board 308.

[0065] Since this tool is triggered by the falling of a rubber stopper, the force direction is vertically downward, and the target type is also an object moving vertically downward. Therefore, a mechanical plunger-type limit switch is designed. The plunger-type limit switch uses a quick-acting contact method, i.e., a baffle switch, because the current of this vibration tool will not be too large or the contacts will remain closed for a long time. Therefore, this rapid point-to-point contact method is chosen. Once the set vibration time is reached, the chip controls the limit switch to open, the power supply stops, and the vibration stops accordingly.

[0066] Preferred, see Figure 4 The control component 3 includes a control circuit board 308 and a control circuit housing 310;

[0067] The control circuit board 308 is connected to the forming switch 210, the control circuit board 308 is fixed to the control circuit housing 310, and the control circuit housing 310 is fixed to the power assembly 4;

[0068] The components installed on the control circuit board 308 include a motor control circuit switch 301, a charging control circuit switch 302, a battery pack control circuit switch 303, a trigger circuit switch 304, a control circuit processor 305, a control switch I 306, and a control switch II 307.

[0069] The motor control circuit switch 301 is used to control the start and stop of the motor 514 in the vibration assembly 5; the charging control circuit switch 302 is used to control the start and stop of charging the power battery; the battery pack control circuit switch 303 is used to control the start and stop of power supply to the power battery; the trigger circuit switch 304 is used to control the connection and disconnection of the circuit board 308; the control circuit processor 305 is used to provide the signal output for vibration start and stop, and the algorithm settings for vibration time and vibration frequency; the control switch I 306 and the control switch II 307 are backup switches.

[0070] The control component 3 includes an external control chamber that surrounds a control circuit board 308. The control circuit board 308 includes a processor, a serial peripheral interface, an RTC clock, and a debug module. It also interfaces with a serial rechargeable battery, a vibration motor, and an antenna. The control circuit board 308 is fixed to the control circuit chamber 310 by screws 309. The sealed chamber contains aerogel to ensure insulation and temperature resistance.

[0071] Preferred, see Figure 5 The power assembly 4 includes a power battery frame 401, a power battery housing 402, and a power battery base plate 403.

[0072] Multiple sets of the power battery frame 401 are evenly arranged along the axial direction of the vibratory cementing tool body 7 and connected to each other, and are disposed inside the power battery housing 402. The upper and lower ends of the power battery housing 402 are fixed to the power battery base plate 403, and the power battery base plate 403 is fixed to the control circuit compartment 310 and the vibration component 5 respectively.

[0073] The purpose of setting the power battery casing 402 is to prevent drilling fluid or cement slurry flowing through the guide chamber 211 from entering the interior through the annulus.

[0074] Each frame is reinforced and secured at the front and rear with insulating, high thermal conductivity silicone base plates. The entire power battery pack is encased in a power system shell to prevent drilling fluid or cement slurry from entering the interior through the annulus. The upper interface of the battery pack is connected to the control circuit, allowing the battery pack to be charged.

[0075] The upper interface is connected to the control circuit board 308, and the power supply is controlled by the control circuit board 308.

[0076] Preferred, see Figure 6 The vibration assembly 5 comprises a motor housing 501, an upper sealing ring 502 on the motor housing, a coupling 503, a transmission shaft 504, bolts 505, a flat keyway 506, a fixed eccentric block 507, a self-aligning eccentric block 508, a lower sealing ring 509 on the motor housing, a nut 510, a ball bearing 511, a shaft retaining ring 512, a vibration chamber 513, and a motor 514.

[0077] The power battery base plate 403 is fixed to the motor housing 501 by the sealing ring 502 on the motor housing. The motor housing 501 is fixed with a motor 514. The output shaft of the motor 514 is coaxially fixed to the transmission shaft 504 by the coupling 503. A flat keyway 506 is provided on the outer circumference of the transmission shaft 504. The transmission shaft 504 is keyed to the fixed eccentric block 507 by the flat keyway 506. The fixed eccentric block 507 is adjustablely fixed to the self-aligning eccentric block 508 by the bolt 505 and the nut 510.

[0078] The bottom end of the drive shaft 504 is sealed to the bottom end of the motor housing 501 through the shaft retaining ring 512;

[0079] The motor housing 501 is threadedly connected to the vibration chamber 513 and sealed by the lower sealing ring 509 of the motor housing. A ball bearing 511 is installed at the lower end of the vibration chamber 513 and is connected to the transmission shaft 504.

[0080] In this embodiment, both the bolt 505 and the nut 510 are hexagonal bolts and hexagonal nuts.

[0081] Preferred, see Figure 7 The rotary guide assembly 6 includes a back pressure valve 601, a baffle 602, a ball bearing 603, an impeller 604, a connecting sleeve 605, a thrust bearing 606, an eccentric guide head 607, and a body 608.

[0082] The body 608 is threadedly connected to the inner surface of the vibratory cementing tool body 7, the back pressure valve 601 is threadedly connected to the inner surface of the body 608, the baffle 602 is fixed to the lower end of the back pressure valve 601 and is provided with a flow channel, and the baffle 602 is connected to the impeller 604 through a ball bearing 603.

[0083] A connecting sleeve 605 is installed at the lower end of the impeller 604, and the connecting sleeve 605 is connected to the eccentric guide head 607 through the thrust bearing 606.

[0084] Among them, the back pressure valve 601 is a one-way flow valve with a tongue plate structure. The cover plate and the core valve are sealed by an O-ring. Drilling fluid or cement slurry can flow in the forward direction, but it cannot flow in the reverse direction and can withstand pressure, which can ensure that cement slurry in the cementing annulus will not flow back into the casing.

[0085] The hydraulically driven turbine uses the method of fluid flowing through the impeller 604 to increase pressure through rotation, which drives the front guide head to rotate at high speed, guides the drilling fluid to form a high-speed rotating vortex, cleans or trims the well wall, and facilitates the running of the tubing string.

[0086] The eccentric structure of the front guide head, unlike the conventional centered structure, allows it to be raised and lowered again when the casing is obstructed during casing installation. This allows it to pass through difficult-to-run sections or narrowed sections of the well where the casing is obstructed, without the need to rotate the casing. The guide head can then be used to continue running the casing string.

[0087] Preferably, the limit switch 210 is used to control the control circuit processor 305 on the control circuit board 308 to send a vibration start signal.

[0088] Preferably, the speed range of the motor 514 is 0 r / min to 1400 r / min.

[0089] Preferably, the self-aligning eccentric block 508 and the fixed eccentric block 507 have multiple threaded holes at their preset positions, and the bolt 505 and the nut 510 are connected by different threaded holes to form eccentric block combinations at different angles.

[0090] This invention adjusts the magnitude of the excitation force by changing the combination of eccentric blocks. The gap between the vibration chamber and the drive shaft is sealed with gaskets.

[0091] The usage process of this invention is as follows: During the cementing operation, when the cementing plug descends past the upper connector 1 and reaches the triggering component 2, it presses against the plug seat 201. The push rod 204 is forced to descend and compress the spring 207. The limit switch trigger rod 208 then touches the limit switch 210, which activates the control circuit processor 305 on the control circuit board 308 to send a vibration start signal. The power component 4 provides electrical energy to the control component 3 and the vibration component 5. The controller starts the motor 514, whose speed range is 0 r / min to 1400 r / min. The motor 514 drives the fixed eccentric block 507 and the self-aligning eccentric block 508 to rotate, generating radial vibration.

[0092] By using a Bluetooth tool on control circuit board 308 to receive pre-set vibration amplitude values, and employing the algorithm and clock design within control circuit board 308, continuous vibration is achieved at preset amplitude and frequency points. This invention allows for the setting of vibration time and frequency according to the actual requirements of cementing site operations.

[0093] The terms “first”, “second”, etc., are used to distinguish similar objects, not to describe or indicate a specific order or sequence.

[0094] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent in such process, method, article, or apparatus / device.

[0095] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A novel vibrating cementing tool, characterized in that, The vibration cementing tool comprises an upper joint assembly (1), a trigger starting assembly (2), a control assembly (3), a power assembly (4), a vibration assembly (5), a rotary guide assembly (6) and a vibration cementing tool body (7). One end of the upper joint assembly (1) is detachably fixedly connected with the vibration cementing tool body (7), and the other end of the upper joint assembly (1) is detachably fixedly connected with the trigger starting assembly (2). The control assembly (3) is arranged on one side of the other end of the trigger starting assembly (2), and the control assembly (3) is fixed with the power assembly (4); the power assembly (4) is arranged below the control assembly (3) and is fixed. The vibration assembly (5) is arranged below the power assembly (4) and is fixed with the power assembly (4). The rotary guide assembly (6) is arranged below the vibration assembly (5) and is detachably fixedly connected with the inner surface of the vibration cementing tool body (7); the upper joint assembly (1) comprises an upper joint body (101) and an upper joint sealing ring (102). The upper joint body (101) is threadedly connected with the vibration cementing tool body (7) through the upper joint sealing ring (102); the trigger starting assembly (2) comprises a rubber plug seat (201), a rubber plug seat sealing ring (202), a flow guide seat (203), a push rod (204), a disc spring (205), a push rod seat (206), a spring (207), a travel switch trigger rod (208), a travel switch baffle (209), a travel switch (210), a flow guide bin body (211) and a flow guide bin body sealing ring (212). The rubber plug seat (201) is threadedly connected with the upper joint body (101) and is sealingly connected through the rubber plug seat sealing ring (202), and the rubber plug seat (201) is internally arranged with a cementing rubber plug capable of moving along the rubber plug seat (201); The rubber plug seat (201) is coaxially fixed with one end of the flow guide seat (203), the other end of the flow guide seat (203) is fixed with one end of the disc spring (205), and the other end of the disc spring (205) is fixed with the flow guide bin body (211); The push rod (204), the push rod seat (206), the spring (207), the travel switch trigger rod (208), the travel switch baffle (209) and the travel switch (210) are located inside the rubber plug seat (201), the flow guide seat (203) and the flow guide bin body (211); the flow guide bin body (211) is sealingly connected with the vibration cementing tool body (7) through the flow guide bin body sealing ring (212). The cementing plug can be overlapped with one end of the push rod (204), the push rod (204) is arranged in and moves along the push rod seat (206), the push rod seat (206) is fixed with the flow guide chamber body (211), the other end of the push rod (204) is fixed with one end of the spring (207), the other end of the spring (207) is fixed with the travel switch stop piece (209), and the travel switch stop piece (209) is fixed with the inner end surface of the flow guide chamber body (211); The other end of the push rod (204) is overlapped with the travel switch trigger lever (208), and the travel switch trigger lever (208) moves in the axial direction thereof; the travel switch trigger lever (208) is used for actuating the travel switch stop piece (209), the travel switch stop piece (209) is used for controlling the on-off of the travel switch (210), and the travel switch (210) is used for controlling the on-off of the control assembly (3); the control assembly (3) comprises a control circuit board (308) and a control circuit chamber body (310); The control circuit board (308) is connected with the travel switch (210), the control circuit board (308) is fixed with the control circuit chamber body (310), and the control circuit chamber body (310) is fixed with the power assembly (4); The elements mounted on the control circuit board (308) comprise a motor control circuit switch (301), a charging control circuit switch (302), a battery pack control circuit switch (303), a trigger circuit switch (304), a control circuit processor (305), a control switch I (306) and a control switch II (307); The motor control circuit switch (301) is used for controlling the start-stop of the vibration assembly (5), the charging control circuit switch (302) is used for controlling the charging start-stop of the power battery, the battery pack control circuit switch (303) is used for controlling the power supply start-stop of the power battery, the trigger circuit switch (304) is used for controlling the on-off of the control circuit board (308), the control circuit processor (305) is used for providing signal output of vibration start-stop, algorithm setting of vibration time and vibration frequency, and the control switch I (306) and the control switch II (307) are backup switches; The rotary guide assembly (6) comprises a back pressure valve (601), a baffle (602), a ball bearing (603), an impeller (604), a connecting sleeve (605), a thrust bearing (606), an eccentric guide head (607) and a body (608); The body (608) is threadedly connected with the inner surface of the vibration cementing tool body (7), the back pressure valve (601) is threadedly connected with the inner surface of the body (608), the baffle (602) is fixed at the lower end of the back pressure valve (601) and is provided with a flow passage, and the baffle (602) is connected with the impeller (604) through the ball bearing (603). The lower end of the impeller (604) is provided with a connecting sleeve (605), and the connecting sleeve (605) is connected with the eccentric guide head (607) through the thrust bearing (606).

2. A novel vibrating cementing tool according to claim 1, characterized in that, The power assembly (4) comprises a power battery framework (401), a power battery shell (402) and a power battery bottom plate (403). The power battery framework (401) is uniformly arranged in multiple groups along the axial direction of the vibration cementing tool body (7) and is connected with each other, and is arranged in the power battery shell (402), the upper and lower ends of the power battery shell (402) are fixed with the power battery bottom plate (403), and the power battery bottom plate (403) is fixed with the control circuit warehouse body (310) and the vibration assembly (5) respectively.

3. A novel vibrating cementing tool according to claim 2, characterized in that, The vibration assembly (5) comprises a motor shell (501), a motor shell upper sealing ring (502), a shaft coupling (503), a transmission shaft (504), a bolt (505), a flat key groove (506), a fixed eccentric block (507), a self-aligning eccentric block (508), a motor shell lower sealing ring (509), a nut (510), a ball bearing (511), a shaft baffle (512), a vibration warehouse body (513) and a motor (514). The power battery bottom plate (403) is fixed with the motor shell (501) through the motor shell upper sealing ring (502), the motor (514) is fixed in the motor shell (501), the output shaft of the motor (514) is coaxially fixed with the transmission shaft (504) through the shaft coupling (503), the flat key groove (506) is arranged on the outer circumferential surface of the transmission shaft (504), the transmission shaft (504) is connected with the fixed eccentric block (507) through the flat key groove (506), and the fixed eccentric block (507) is adjustably fixed with the self-aligning eccentric block (508) through the bolt (505) and the nut (510). The bottom end of the transmission shaft (504) is sealingly connected with the bottom end of the motor shell (501) through the shaft baffle (512). The motor shell (501) is threadedly connected with the vibration warehouse body (513) and is sealingly connected through the motor shell lower sealing ring (509), and the lower end of the vibration warehouse body (513) is provided with the ball bearing (511), and the ball bearing (511) is bearing-connected with the transmission shaft (504).

4. A novel vibrating cementing tool according to claim 3, characterized in that, The travel switch (210) is used for controlling the control circuit processor (305) on the control circuit board (308) to send a vibration starting signal.

5. A novel vibrating cementing tool according to claim 4, characterized in that, The rotating speed range of the motor (514) is 0r / min-1400r / min.

6. A novel vibrating cementing tool according to claim 5, characterized in that, A plurality of threaded holes are arranged in the preset positions of the self-aligning eccentric block (508) and the fixed eccentric block (507), and the fixed eccentric block (507) is combined with the self-aligning eccentric block (508) through the connection of different threaded holes of the bolt (505) and the nut (510) to form eccentric block combinations with different angles.

Citation Information

Patent Citations

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    CN109356549A

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