Energy storage vibration cementing tool

Abstract

The present invention relates to the technical field of oil and gas well engineering, and discloses an energy storage type vibration cementing tool, comprising an outer shell and a turbine assembly. The energy storage type vibration cementing tool injects cement through the outer shell and drives the turbine assembly to rotate, the first drive shaft, the first eccentric block, the one-way clutch, the second drive shaft and the second eccentric block to rotate. Due to the centrifugal force of the rotation of the first eccentric block and the second eccentric block, the cementing tool vibrates, and the rotational kinetic energy of the second drive shaft is stored through the energy storage device, and after the cement slurry grouting is completed, the stored energy is converted into the kinetic energy of the axial rotation of the second drive shaft for release, so as to realize the vibration during the cement slurry waiting for setting. Due to the one-way transmission of the one-way clutch, the first drive shaft and the second drive shaft are prevented from rotating synchronously, thereby reducing energy loss and changing the vibration amplitude, so as to achieve the effect of generating vibration in the whole process of cement injection, cement slurry displacement and waiting for setting, and automatically adjusting the vibration frequency and improving the cementing quality.

Description

Technical Field

[0001] The invention relates to the technical field of oil and gas well engineering, in particular to an energy storage type vibration cementing tool. Background Art

[0002] Cementing is the construction operation of lowering casing into the well and injecting cement into the annular space between the wellbore and the casing. It is an indispensable and important link in the drilling and completion process. Experiments have shown that vibrating the cement slurry waiting to solidify in the annulus through the wellhead can keep the cement slurry in a low-speed motion state, which helps to improve the performance of the cement slurry and enhance the bonding strength and quality between the cement slurry and the ground and casing.

[0003] At present, vibration cementing tools at home and abroad are mainly divided into hydraulic pulse vibration cementing tools, acoustic vibration cementing tools, annulus hydraulic or air vibration cementing tools, mechanical vibration cementing tools, etc., among which hydraulic pulse vibration cementing tools are the most widely used.

[0004] However, hydraulic pulse vibration cementing tools can only generate vibrations during cement injection and cement slurry displacement; although mechanical and audio vibration cementing tools can generate vibrations during cement slurry waiting to set, they require ground cables or other auxiliary equipment, which changes the conventional cementing process, making cementing site construction complicated and inconvenient to use, and its relatively single vibration frequency leads to poor bonding quality. Therefore, an energy storage vibration cementing tool is proposed to solve the above problems. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides an energy storage type vibration cementing tool, which has the advantages of generating vibration during the entire process of cementing, cement slurry displacement and waiting for setting without changing the cementing process and without the need for downhole power equipment, and automatically adjusting the vibration frequency and improving the cementing quality. It solves the problem that the hydraulic pulse vibration cementing tool can only generate vibration during the cementing and cement slurry displacement processes; although the mechanical and audio vibration cementing tools can generate vibration during the cement slurry waiting for setting, they require ground cables or other auxiliary equipment, which changes the conventional cementing process, making the cementing site construction complicated and inconvenient to use, and the relatively single vibration frequency leads to poor cementing quality.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose of generating vibration during the whole process of cementing, cement slurry displacement and waiting for setting without changing the cementing process and without the need for downhole power equipment, and automatically adjusting the vibration frequency and improving the cementing quality, the present invention provides the following technical solutions: an energy storage type vibration cementing tool, comprising an outer shell, and also comprising a turbine assembly, the outer shell is provided with a turbine assembly inside, the outer shell is provided with an inner shell inside, the inner wall of the outer shell and the outer wall of the inner shell form a guide cavity for fluid cement slurry, the fluid cement slurry passes through the guide cavity and drives the active end of the turbine assembly to rotate, a first drive shaft extending into the inner shell is provided on the rotation center line of the turbine assembly, a first eccentric block is provided on the first drive shaft, a one-way clutch is provided at one end of the first drive shaft away from the turbine assembly, a second drive shaft is provided on the output shaft of the one-way clutch, a second eccentric block is provided on the second drive shaft, an energy storage device connected to the second drive shaft in transmission is provided in the inner shell, the energy storage device is used to store the kinetic energy of the axial rotation of the second drive shaft, and after the cement slurry grouting is completed, the stored energy is converted into the kinetic energy of the axial rotation of the second drive shaft for release.

[0009] Preferably, the energy storage device is used to convert the kinetic energy of the axial rotation of the second drive shaft into electrical energy.

[0010] Preferably, the energy storage device includes a permanent magnet brushless motor rotor, a permanent magnet brushless motor stator, a power control module and an energy storage battery. The permanent magnet brushless motor rotor is arranged at one end of the second drive shaft away from the one-way clutch, the permanent magnet brushless motor stator is arranged on the inner wall of the inner shell and located on the periphery of the permanent magnet brushless motor rotor, the power control module electrically connected to the permanent magnet brushless motor stator is arranged in the inner shell, and the energy storage battery electrically connected to the power control module is arranged in the inner shell.

[0011] Preferably, the energy storage device is used to convert the kinetic energy of the axial rotation of the second drive shaft into pressure kinetic energy.

[0012] Preferably, the energy storage device includes a screw, a sleeve, a piston plate and a guide rod. The screw is arranged at the end of the second drive shaft away from the one-way clutch, the sleeve is arranged outside the screw and meshes with the screw, the piston plate is arranged at the end of the sleeve away from the second drive shaft and is slidingly sealed with the inner shell body, the piston plate and the inner wall of the inner shell body form a closed air pressure chamber, the guide rod is arranged on the inner shell body parallel to the screw, and a guide sealing hole adapted to the guide rod is opened on the piston plate.

[0013] Preferably, the energy storage device is used to convert the kinetic energy of the axial rotation of the second drive shaft into elastic potential energy.

[0014] Preferably, the energy storage device includes a movable block, a fixed block and a spring, the movable block is sleeved on the second drive shaft, the fixed block is sleeved on the fixed block, a guide block is provided in the inner shell body and is slidably abutted against the fixed block, the guide block is used to limit the axial linear sliding of the fixed block relative to the second drive shaft, the spring is sleeved on the second drive shaft, one end of the spring is abutted against the fixed block, and the other end is fixed relative to the inner shell body.

[0015] Preferably, the number of the movable blocks, the fixed blocks and the springs is the same and no less than two.

[0016] Preferably, the energy storage device includes a turntable, a torsion spring and a fixed plate, the turntable is arranged on the outer wall of the second drive shaft, one end of the torsion spring is arranged on the turntable, and the fixed plate is arranged in the inner shell and fixedly connected to the other end of the torsion spring.

[0017] Preferably, the energy storage device is used to convert the kinetic energy of the axial rotation of the second drive shaft into electrical energy and elastic potential energy.

[0018] Preferably, the energy storage device includes a motor rotor, a motor stator, a charge and discharge control module, a battery, a planetary gear set, a cross pin, an impact hammer and a disc spring. The motor rotor is arranged at the end of the second drive shaft away from the one-way clutch, the motor stator is arranged on the inner wall of the inner shell and located on the periphery of the motor rotor, the charge and discharge control module electrically connected to the motor stator is arranged in the inner shell, the energy storage battery electrically connected to the charge and discharge control module is arranged in the inner shell, the planetary gear set transmission-connected to the motor rotor is arranged in the inner shell, the output end of the planetary gear set is arranged, the impact hammer is arranged in the inner shell for axial sliding relative to the motor rotor, the inner wall of the impact hammer is provided with a spiral groove matched with the cross pin, and a disc spring is arranged in the inner shell and located on the side of the impact hammer away from the motor stator.

[0019] The mass of the first eccentric mass is smaller than the mass of the second eccentric mass.

[0020] (III) Beneficial effects

[0021] Compared with the prior art, the present invention provides an energy storage type vibration cementing tool, which has the following beneficial effects:

[0022] 1. The energy storage type vibration cementing tool interacts with the inner wall of the diversion cavity during the process of injecting cement slurry through the outer shell and generates fluid force to drive the movable end of the turbine assembly to rotate. The turbine assembly drives the first drive shaft and the first eccentric block to rotate. Since the first eccentric block generates centrifugal force during the rotation process, the cementing tool vibrates. At the same time, the first drive shaft drives the second drive shaft and the second eccentric block to rotate through the one-way clutch. Since the second eccentric block also generates centrifugal force during the rotation process, the vibration amplitude of the cementing tool is further increased. At the same time, the rotational kinetic energy of the second drive shaft is stored through the energy storage device, and After the cement slurry grouting is completed, the stored energy is converted into the kinetic energy of the axial rotation of the second drive shaft for release. During the rotation of the second drive shaft, the second eccentric block is driven to generate a centrifugal force during the rotation, causing the cementing tool to vibrate. At this time, due to the one-way transmission principle of the one-way clutch, the first drive shaft does not rotate synchronously with the second drive shaft, thereby reducing the energy loss of the energy storage device and changing the vibration amplitude of the cementing tool, so as to achieve the effect of generating vibration in the whole process of cementing, cement slurry displacement and waiting for setting without changing the cementing process and without the need for downhole power equipment, and automatically adjusting the vibration frequency and improving the cementing quality.

[0023] 2. The energy storage type vibration cementing tool utilizes the fluid force of cement slurry to drive the turbine assembly, the first drive shaft, the one-way clutch and the second drive shaft to rotate during cementing, and converts the kinetic energy of the axial rotation of the second drive shaft into electrical energy or pressure potential energy or elastic potential energy through the energy storage device, thereby realizing a variety of different energy storage methods. Among them, the power control module is used to accurately control the energy storage battery to release electrical energy and make the permanent magnet brushless motor rotor rotate at a fixed time and speed during the conversion of kinetic energy into electrical energy, thereby accurately controlling the vibration frequency, vibration duration and vibration amplitude of the cementing tool during the whole waiting process. When the kinetic energy is converted into pressure potential energy or elastic potential energy, when the force of the turbine assembly driving the second drive shaft to rotate is less than the reverse thrust of the piston plate caused by the internal air pressure of the closed air pressure chamber or the reaction force generated by the elastic potential energy of the spring compression, the second drive shaft is immediately driven to reverse, which is equivalent to the first drive shaft, thereby realizing the first eccentric block and the second eccentric block to rotate in different directions, so that the cementing tool can produce the effect of real-time change of centrifugal vibration frequency and improvement of cementing quality.

[0024] 2. The energy storage type vibration cementing tool drives the turbine assembly, the first drive shaft, the one-way clutch and the second drive shaft to rotate by utilizing the fluid force of the cement slurry during the cementing process, and drives the motor rotor on the energy storage device to rotate by the second drive shaft. The motor rotor and the motor stator move relative to each other and generate an induced current. The charge and discharge control module rectifies the induced current and charges the battery, thereby converting the kinetic energy of the axial rotation of the second drive shaft into electrical energy. At the same time, the speed of the motor rotor is decelerated by the planetary gear set and the cross pin is driven to rotate. The cross pin interacts with the spiral groove on the impact hammer during the process. When the sliding abutment part between the cross pin and the impact hammer moves in the guide groove, the impact hammer is driven to move away from the second drive shaft and compress the disc spring; when the sliding abutment part between the cross pin and the impact hammer moves from the guide groove to the impact groove, the disc spring releases elastic potential energy and drives the impact hammer axially relative to the cross pin and causes the cementing tool to generate an axial impact force, thereby cooperating with the cementing tool to generate radial vibration under the action of the first eccentric block and the second eccentric block while generating axial vibration, thereby realizing multi-directional vibration and further improving the effect of the cementing tool to change the centrifugal vibration frequency in real time and improve the bonding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of a first embodiment of an energy storage type vibration cementing tool proposed by the present invention;

[0026] Figure 2 This is a structural schematic diagram of a second embodiment of an energy storage type vibration cementing tool proposed by the present invention;

[0027] Figure 3 This is a structural schematic diagram of a third embodiment of an energy storage type vibration cementing tool proposed by the present invention;

[0028] Figure 4 This is a structural schematic diagram of a fourth embodiment of an energy storage type vibration cementing tool proposed by the present invention;

[0029] Figure 5 It is a structural stereogram of an impact hammer in the fourth embodiment of the present invention;

[0030] Figure 6 It is a schematic diagram of the inner wall structure of the impact hammer in the fourth embodiment of the present invention. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example 1: Please refer to Figure 1 , an energy storage type vibration cementing tool, including an outer shell 1, the outer shell 1 is composed of an upper joint, a casing and a lower joint, the upper joint and the lower joint are connected to the casing through threads, and also includes a turbine assembly 2, the outer shell 1 is provided with a turbine assembly 2, the turbine assembly 2 is composed of a turbine stator, a turbine rotor, a turbine shaft and a turbine bearing, an inner shell 3 is movably installed inside the outer shell 1, and the inner wall of the casing is provided with a limit block for clamping and fixing the two ends of the inner shell 3 with the upper joint, so that the inner shell 3 can be disassembled relative to the outer shell 1 while avoiding the inner shell 3 During the vibration process, the outer shell 1 shakes relative to the outer shell 1, and the inner wall of the outer shell 1 and the outer wall of the inner shell 3 form a guide cavity for the fluid cement slurry. The fluid cement slurry passes through the guide cavity and drives the movable end of the turbine assembly 2 to rotate relative to the outer shell 1 under the action of the fluid molecular force. A first drive shaft 4 extending into the inner shell 3 is fixedly installed on the rotation center line of the turbine assembly 2, and a first eccentric block 5 is fixedly installed on the first drive shaft 4. A one-way clutch 6 is arranged at the end of the first drive shaft 4 away from the turbine assembly 2. The one-way clutch 6 consists of a one-way clutch fixed plate and a one-way clutch movable plate. The inner shell 3 is composed of a plate, a one-way clutch output shaft and a pressure spring. A second drive shaft 7 is fixedly installed on the output shaft of the one-way clutch 6, and a second eccentric block 8 is fixedly installed on the second drive shaft 7. An energy storage device 9 connected to the second drive shaft 7 is arranged in the inner shell 3. The energy storage device 9 is used to convert the kinetic energy of the axial rotation of the second drive shaft 7 into electrical energy, and after the cement slurry grouting is completed, the stored energy is converted into the kinetic energy of the axial rotation of the second drive shaft 7 for release, thereby driving the second eccentric block 8 to rotate. The second eccentric block 8 generates centrifugal force during the rotation process, thereby causing the inner shell 3 and the outer shell 1 to vibrate accordingly. At the same time, due to the one-way rotation drive of the one-way clutch 6, the second drive shaft 7 and the first drive shaft 4 are not synchronized during the release of electrical energy by the energy storage device 9, thereby changing the vibration amplitude and vibration frequency of the cementing tool relative to the cement slurry injection process and reducing the vibration energy consumption of the cementing tool during the cement slurry waiting process, so as to achieve the effect of generating vibration in the whole process of cementing, cement slurry displacement and waiting for setting without changing the cementing process and without the need for downhole power equipment, and automatically adjusting the vibration frequency and improving the cementing quality.

[0033] Preferably, the energy storage device 9 includes a permanent magnet brushless motor rotor a1, a permanent magnet brushless motor stator a2, a power control module a3 and an energy storage battery a4, the permanent magnet brushless motor rotor a1 is fixedly installed at one end of the second drive shaft 7 away from the one-way clutch 6, the permanent magnet brushless motor stator a2 adapted to the permanent magnet brushless motor rotor a1 is fixedly installed on the inner wall of the inner shell 3 and located on the periphery of the permanent magnet brushless motor rotor a1, the power control module a3 electrically connected to the permanent magnet brushless motor stator a2 is fixedly installed in the inner shell 3, and the energy storage battery a4 electrically connected to the power control module a3 is fixedly installed in the inner shell 3; the turbine assembly 2, the first drive shaft 4, the one-way clutch 6 and the second drive shaft 7 are driven to rotate by utilizing the fluid force of the cement slurry during the cementing process, and the second drive shaft 7 drives the permanent magnet brushless motor stator a2 to rotate. The brush motor rotor a1 rotates and cuts the magnetic flux lines with the permanent magnet brushless motor stator a2 to generate induced current, and the induced current is stored in the energy storage battery a4 through the power control module a3. When the cement slurry grouting is completed, the power control module a3 controls the energy storage battery a4 to discharge and drive the permanent magnet brushless motor rotor a1 to rotate relative to the permanent magnet brushless motor stator a2, thereby driving the second drive shaft 7 and the second eccentric block 8 to rotate. The second eccentric block 8 generates centrifugal force during rotation, thereby causing the inner shell 3 and the outer shell 1 to vibrate accordingly. At the same time, due to the one-way transmission of the one-way clutch 6, the second drive shaft 7 is asynchronous with the first drive shaft 4, thereby realizing energy storage during cement slurry injection and energy release during cement slurry setting and full-process vibration and improving the bonding quality.

[0034] Preferably, by setting the mass of the first eccentric block 5 to be smaller than the mass of the second eccentric block 8, the turbine assembly 2 can simultaneously drive the first eccentric block 5 and the second eccentric block 8 to rotate during the injection of cement slurry, and the generated vibration amplitude is equivalent to the sum of the centrifugal forces of the first eccentric block 5 and the second eccentric block 8. During the cement slurry waiting to set, the one-way transmission of the one-way clutch 6 makes the second drive shaft 7 and the first drive shaft 4 asynchronous, that is, the generated vibration amplitude is only the centrifugal force of the second eccentric block 8, further making the vibration amplitude of the cementing tool during the injection of cement slurry and the cement slurry waiting to set greatly different, so as to realize automatic adjustment of the vibration frequency, save the energy loss of the energy storage device 9 during the cement slurry waiting to set, extend the energy release time of the energy storage device 9 and improve the bonding quality.

[0035] Example 2: Please refer to Figure 2, the only difference from the first embodiment is that the energy storage device 9 is used to convert the kinetic energy of the axial rotation of the second drive shaft 7 into pressure kinetic energy. Specifically, the energy storage device 9 includes a screw b1, a screw sleeve b2, a piston plate b3 and a guide rod b4. The screw b1 is fixedly installed at the end of the second drive shaft 7 away from the one-way clutch 6, the screw sleeve b2 is movably installed outside the screw b1 and meshes with the screw b1, the piston plate b3 is fixedly installed at the end of the screw sleeve b2 away from the second drive shaft 7 and is slidably sealed with the inner shell 3, and the side of the piston plate b3 away from the screw sleeve b2 forms a closed air pressure chamber with the inner wall of the inner shell 3, the guide rod b4 is parallel to the screw b1 and fixedly installed on the inner shell 3, and a guide sealing hole adapted to the guide rod b4 is opened on the piston plate b3; by utilizing the fluid force of the cement slurry to drive the turbine assembly 2, the first drive shaft 4, the one-way clutch 6 and the second drive shaft 7 to rotate during the cementing process, the second drive shaft 7 drives the screw b1 to rotate, and the guide rod b4 cooperates with the piston plate b3 to engage the screw sleeve b2 The axial direction limit relative to the screw b1 makes it possible for the screw b1 and the screw sleeve b2 to interact with each other, and the screw sleeve b2 drives the piston plate b3 to approach or move away from the screw b1, thereby changing the size of the closed air pressure chamber between the piston plate b3 and the inner shell 3 and the pressure of the air pressure. When the force of the turbine assembly 2 driving the first drive shaft 4, the one-way clutch 6 and the second drive shaft 7 to rotate is less than the reverse force of the air pressure inside the closed air pressure chamber on the piston plate b3, the pressure of the air pressure is adaptively adjusted and drives the piston plate b3 to approach or move away from the screw b1, thereby causing the screw sleeve b2 to drive the screw b1, the second drive shaft 7 and the second eccentric block 8 to rotate. During the rotation of the second eccentric block 8, centrifugal force is generated, thereby causing the inner shell 3 and the outer shell 1 to vibrate accordingly. At the same time, due to the one-way transmission of the one-way clutch 6, the second drive shaft 7 is asynchronous with the first drive shaft 4, thereby realizing the energy storage during the cement slurry injection process and the energy release and full-process vibration during the cement slurry waiting to solidify, and improving the bonding quality.

[0036] Example 3: Please refer to Figure 3, the only difference from the first embodiment is that the energy storage device 9 is used to convert the kinetic energy of the axial rotation of the second drive shaft 7 into elastic potential energy. Specifically, the energy storage device 9 includes a limiting cylinder c1, a movable block c2, a fixed block c3 and a torsion spring c4. The limiting cylinder c1 is fixedly installed on the second drive shaft 7. The limiting cylinder c1 is provided with a strip-shaped protrusion. The movable block c2 is slidably installed on the limiting cylinder c1 along the axial direction of the second drive shaft 7. The strip-shaped protrusion is used to limit the movable block c2 from rotating relative to the second drive shaft 7. The fixed block c3 is fixedly installed in the inner shell 3. One end of the torsion spring c4 is fixedly connected to the movable block c2, and the other end is fixedly connected to the fixed block c3; the fluid force of the cement slurry is used to drive the turbine assembly 2, the first drive shaft 4, the one-way clutch 6 and the second drive shaft 7 to rotate during the cementing process, and the second drive shaft 7 drives the limiting cylinder c1 to rotate. Since the bar-shaped protrusion on the limiting cylinder c1 has a limiting effect on the movable block c2, the movable block c2 rotates with the second drive shaft 7, and the two ends of the torsion spring c4 are respectively fixed to the movable block c2 and the fixed block c3, and the fixed block c3 is fixed to the inner shell 3. The torsion spring c4 is fixed, that is, the rotation of the limit cylinder c1 drives the torsion spring c4 to rotate and generate elastic potential energy. At the same time, the movable block c2 is movably connected to the limit cylinder c1, so that the torsion spring c4 rotates and generates elastic potential energy while adaptively adjusting the distance between the movable block c2 and the fixed block c3, thereby making the elastic deformation on the torsion spring c4 more uniform, avoiding the situation that the torsion spring c4 generates non-elastic deformation during the rotation, which leads to a short service life of the cementing tool. When the force of the turbine assembly 2 driving the first drive shaft 4, the one-way clutch 6 and the second drive shaft 7 to rotate is less than the reverse force of the elastic potential energy generated by the torsion spring c4, the torsion spring c4 is reset and drives the movable block c2, the limit cylinder c1 and the second drive shaft 7 and the second eccentric block 8 to rotate. The second eccentric block 8 generates centrifugal force during the rotation, thereby causing the inner shell 3 and the outer shell 1 to vibrate accordingly. At the same time, due to the one-way transmission of the one-way clutch 6, the second drive shaft 7 is asynchronous with the first drive shaft 4, thereby realizing the energy storage during the cement slurry injection process and the energy release and full-process vibration during the cement slurry waiting to solidify, and improving the cementing quality.

[0037] Example 4: Please refer to Figure 4-6, the only difference from the first embodiment is that the energy storage device 9 is used to convert the kinetic energy of the axial rotation of the second drive shaft 7 into electrical energy while storing elastic potential energy. Specifically, the energy storage device 9 includes a motor rotor d1, a motor stator d2, a charge and discharge control module d3, a battery d4, a planetary gear set d5, a cross pin d6, an impact hammer d7, a spiral groove d8 and a disc spring d9. The motor rotor d1 is fixedly installed at one end of the second drive shaft 7 away from the one-way clutch 6, the motor stator d2 is fixedly installed on the inner wall of the inner shell 3 and located on the periphery of the motor rotor d1, the charge and discharge control module d3 electrically connected to the motor stator d2 is fixedly installed in the inner shell 3, and the inner shell 3 is fixedly installed with the motor stator d2. An energy storage battery d4 electrically connected to the charge and discharge control module d3 is fixedly installed, a planetary gear set d5 drivingly connected to the motor rotor d1 is arranged in the inner shell 3, a cross pin d6 is fixedly installed on the output end of the planetary gear set d5, an impact hammer d7 is axially slidably installed in the inner shell 3 relative to the motor rotor d1, a notch is arranged on the side of the impact hammer d7, a limiting portion corresponding to the notch is fixedly installed on the inner wall of the inner shell 3, and the notch on the impact hammer d7 is matched with the upper limit portion of the inner shell 3 to avoid synchronous rotation of the cross pin d6 and the impact hammer d7 during the interaction process, that is, to limit the axial sliding of the impact hammer d7 along the second drive shaft 7, and the impact hammer d7 can also be provided with a limiting portion corresponding to the notch. A limit portion is set, a notch is provided on the inner wall of the inner shell 3, a spiral groove adapted to the cross pin d6 is provided on the inner wall of the impact hammer d7, a disc spring d9 is provided in the inner shell 3 and on the side of the impact hammer d7 away from the motor stator d2, and the spiral groove d8 is connected by a plurality of guide grooves d81 and impact grooves d82 that are staggered and terminated at intervals; the turbine assembly 2, the first drive shaft 4, the one-way clutch 6 and the second drive shaft 7 are driven to rotate by the fluid force of the cement slurry during the cementing process, and the motor rotor d1 on the energy storage device 9 is driven to rotate by the second drive shaft 7, the motor rotor d1 and the motor stator d2 move relative to each other and cut the magnetic flux lines to generate an induced current, and the charge and discharge control The module d1 rectifies the induced current and charges the battery d4, so as to realize the conversion of the kinetic energy of the axial rotation of the second drive shaft 7 into electrical energy. At the same time, the rotation speed of the motor rotor d1 is decelerated and transmitted to the cross pin d6 through the planetary gear set d5, so as to avoid the cross pin d6 rotating too fast, which may cause the cross pin d6 and the spiral groove d8 on the impact hammer d7 to be damaged due to excessive grinding. During the rotation of the cross pin d6, the cross pin d6 interacts with the spiral groove d8 on the impact hammer d7. When the sliding contact part between the cross pin d6 and the impact hammer d7 moves in the guide groove d81, the impact hammer d7 is driven to move away from the second drive shaft 7 and compress the disc spring d9.When the sliding abutment part between the cross pin d6 and the impact hammer d7 moves from the guide groove d81 to the impact groove d82, the disc spring d9 releases elastic potential energy and drives the impact hammer d7 to drive axially relative to the cross pin d6 and make the cementing tool generate axial impact force, and then cooperate with the cementing tool to generate radial vibration and axial vibration under the action of the first eccentric block 5 and the second eccentric block 8, so as to achieve multi-directional vibration, further improving the effect of the cementing tool to change the centrifugal vibration frequency in real time and improve the cementing quality; when the cementing is completed, the charge and discharge control module d3 controls the battery d4 to release electric energy and drive the motor rotor d1 to rotate relative to the motor stator d2, and one end of the motor rotor d1 drives the second drive shaft 7 and the second eccentric block 8 to rotate and generate radial vibration force. Due to the one-way driving principle of the one-way clutch 6, the first drive shaft 4 and the second drive shaft 7 rotate asynchronously, thereby reducing the energy consumption of the cementing tool during the cement slurry waiting process, achieving axial and radial vibrations in the whole process of cementing, cement slurry displacement and waiting, and further improving the effect of cementing quality. ;

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy storage type vibration cementing tool, comprising an outer shell (1), characterized in that: It also comprises a turbine assembly (2), wherein the turbine assembly (2) is arranged inside the outer shell (1), the inner shell (3) is arranged inside the outer shell (1), the inner wall of the outer shell (1) and the outer wall of the inner shell (3) form a guide cavity for fluid cement slurry, the fluid cement slurry passes through the guide cavity and drives the movable end of the turbine assembly (2) to rotate, a first drive shaft (4) extending into the inner shell (3) is arranged on the rotation center line of the turbine assembly (2), a first eccentric block (5) is arranged on the first drive shaft (4), a one-way clutch (6) is arranged at one end of the first drive shaft (4) away from the turbine assembly (2), a second drive shaft (7) is arranged on the output shaft of the one-way clutch (6), a second eccentric block (8) is arranged on the second drive shaft (7), and an energy storage device (9) drivingly connected to the second drive shaft (7) is arranged inside the inner shell (3), the energy storage device (9) is used to store the kinetic energy of the axial rotation of the second drive shaft (7), and convert the stored energy into the kinetic energy of the axial rotation of the second drive shaft (7) for release after the cement slurry grouting is completed; The energy storage device (9) is used to convert the kinetic energy of the axial rotation of the second drive shaft (7) into electrical energy and elastic potential energy; the energy storage device (9) comprises a motor rotor (d1), a motor stator (d2), a charge and discharge control module (d3), a battery (d4), a planetary gear set (d5), a cross pin (d6), an impact hammer (d7), a spiral groove (d8) and a disc spring (d9); the motor rotor (d1) is arranged at one end of the second drive shaft (7) away from the one-way clutch (6); the motor stator (d2) is arranged on the inner wall of the inner shell (3) and located on the periphery of the motor rotor (d1); the charge and discharge control module (d3) electrically connected to the motor stator (d2) is arranged in the inner shell (3); the inner shell (3) An energy storage battery (d4) electrically connected to a charge and discharge control module (d3) is arranged inside the inner shell (3), a planetary gear set (d5) drivingly connected to a motor rotor (d1) is arranged inside the inner shell (3), a cross pin (d6) is arranged at the output end of the planetary gear set (d5), an impact hammer (d7) is arranged in the inner shell (3) to slide axially relative to the motor rotor (d1), a spiral groove (d8) matching the cross pin (d6) is formed on the inner wall of the impact hammer (d7), a disc spring (d9) is arranged inside the inner shell (3) and located on a side of the impact hammer (d7) away from the motor stator (d2), and the spiral groove (d8) is formed by a plurality of guide grooves (d81) and impact grooves (d82) being staggered and connected end to end.

2. The energy storage vibration cementing tool according to claim 1, characterized in that: The mass of the first eccentric mass (5) is smaller than the mass of the second eccentric mass (8).

Images