CN213116145U

CN213116145U - Top drive device and well drilling and repairing equipment

Info

Publication number: CN213116145U
Application number: CN202021865420.3U
Authority: CN
Inventors: 张宝有
Original assignee: Heilongjiang Jinghong Petroleum Equipment Manufacturing Co ltd
Current assignee: Heilongjiang Jinghong Petroleum Equipment Manufacturing Co ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-05-04
Anticipated expiration: 2030-08-31

Abstract

The utility model provides a device and drilling and workover rig are driven on top, should drive the device on top and include box, center pin, set up inverter motor and drive assembly in the box, inverter motor includes casing and hollow motor shaft, the casing with the box is connected, the motor shaft runs through the casing, the center pin passes motor shaft and both ends are stretched out the box, drive assembly is planet reduction gears, the motor shaft is suitable for to pass through drive assembly with the center pin drive is connected. The utility model discloses in, the center pin is the planet reduction gears with the coaxial setting of motor shaft, and the drive assembly is suitable for and passes through drive assembly with the center pin drive is connected, has infinitely variable and zero rotational speed output, and when taking place the drilling string in the well drilling and workover suffocated the brill or the sticking drill, the sudden increase of drilling string load moment of torsion, the rotational speed can reduce to zero rapidly, has the lock function of changeing, can last output torque.

Description

Top drive device and well drilling and repairing equipment

Technical Field

The utility model relates to a bore well workover technical field particularly, relates to a top drives device and bores well workover equipment.

Background

At present, in the drilling and workover operation, a top drive is an important component and is connected with a washpipe assembly and a drill string, a hydraulic station is generally adopted to provide a power source for a hydraulic motor in the top drive to drive the drill string to rotate, the drill string is suppressed or stuck during the drilling and workover operation, at the moment, the load of the drill string is suddenly increased, even the output torque is infinitely increased to damage equipment, and therefore, the maintenance and use cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model provides a problem how to realize reducing the top and drive the probability of damage when taking place the drilling string to hold back brill or the sticking of tool.

In order to solve the above problem, the utility model provides a device is driven on top, include: the variable frequency motor comprises a shell and a hollow motor shaft, the shell is connected with the box, the motor shaft penetrates through the shell, the center shaft penetrates through the motor shaft and the two ends of the motor shaft to extend out of the box, the transmission assembly is a planetary speed reduction mechanism, and the motor shaft is suitable for being connected with the center shaft in a driving mode through the transmission assembly.

Optionally, the transmission assembly comprises a primary planet carrier, a primary planet wheel, a primary sun wheel connected with the motor shaft, a secondary planet carrier connected with the central shaft, a secondary planet wheel and a secondary sun wheel,

the primary sun gear is suitable for being in driving connection with the primary planet carrier through the primary planet gear, the primary planet carrier is also suitable for being in driving connection with the secondary sun gear, and the secondary sun gear is in driving connection with the secondary planet carrier through the secondary planet gear.

Optionally, the box includes along last box, well box and the lower box that the center pin runs through the direction and sets gradually, go up the box with the lower box respectively with the both ends dismantlement formula of well box are connected.

Optionally, the device further comprises a thrust bearing, wherein the thrust bearing is arranged in the lower box body and sleeved on the central shaft.

Optionally, the device further comprises a mounting bearing, wherein the mounting bearing is mounted in the upper box body and sleeved on the central shaft.

Optionally, the device further comprises a thrust bearing and/or a centering bearing, wherein the thrust bearing and/or the centering bearing is mounted in the lower box body and sleeved on the central shaft.

Optionally, the washing machine further comprises a washing pipe assembly, the washing pipe assembly is mounted on the box body, and one end of the central shaft extends out of the box body and is suitable for being communicated with the washing pipe assembly.

Optionally, the device further comprises a lifting ring, and the lifting ring is detachably connected with the box body.

Optionally, an avoidance space is arranged between the lifting ring and the box body, and the washpipe assembly is suitable for being located in the avoidance space.

Another object of the utility model is to provide a drilling equipment to solve and how to realize reducing the top and drive the problem of the probability of damaging when taking place the drilling string to hold back brill or the sticking of a tool.

A well drilling and workover rig comprising a top drive as described above.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the central shaft and the motor shaft are coaxially arranged, the transmission assembly is a planetary speed reducing mechanism, the motor shaft is suitable for being in driving connection with the central shaft through the transmission assembly, stepless speed change and zero rotating speed output are achieved, when a drill string is held back or stuck in the well drilling and repairing work, the load torque of the drill string is suddenly increased, the rotating speed can be rapidly reduced to zero, the stalling function is achieved, and the torque can be continuously output.

(2) The reverse rotation can be set according to the well condition, and the deformation torque stored in the drill column is released, so that the drill column can realize the function of relieving the suppressed drilling or stuck drilling. The reversing speed can be adjusted according to the drilling and workover process requirements, so that the speed is in a safe range, and the risk of reversing the underground drilling tool is reduced.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a top drive device according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

fig. 3 is a partially enlarged view of fig. 2.

Description of reference numerals:

1-box, 2-washing pipe assembly, 3-gooseneck, 4-lifting ring, 5-conversion joint, 6-variable frequency motor, 7-central shaft, 8-transmission component;

11-lower box body, 12-middle box body, 13-upper box body, 41-connecting rod, 61-motor shaft, 81-primary sun gear, 82-primary planet gear, 83-primary planet carrier, 84-secondary sun gear, 85-secondary planet gear and 86-secondary planet carrier;

111-centering bearing, 112-thrust bearing, 113-thrust bearing and 131-mounting bearing.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

As shown in fig. 1-3, the embodiment of the utility model provides a top drive device, be in including box 1, center pin 7, setting inverter motor 6 and drive assembly 8 in the box 1, inverter motor 6 includes casing and hollow motor shaft 61, the casing with box 1 connects, motor shaft 61 runs through the casing, center pin 7 passes motor shaft 61 and both ends are stretched out box 1, drive assembly 8 is the planet reduction gears, motor shaft 61 is suitable for through drive assembly 8 with center pin 7 drive connection.

In this embodiment, inverter motor 6 is selected for use to the power supply of top drive device, because motor shaft 61 runs through the casing, consequently, select for use biax inverter motor, and simultaneously, in order to realize that center pin 7 passes motor shaft 61 (being motor shaft 61 and center pin 7's coaxial setting), motor shaft 61 is equipped with the passageway that runs through along the axial, realize the cavity design of motor shaft 61, compare in current motor through hydraulic drive, it has small, the simple operation, the characteristics that the maintenance cost is low, inverter motor 6 has the rotational speed regulatory function simultaneously, can satisfy infinitely variable and zero rotational speed output, thereby be suitable for the various operating modes of drilling string.

After the top drive device of the embodiment is adopted, the central shaft 7 and the motor shaft 61 are coaxially arranged, the transmission assembly 8 is a planetary speed reduction mechanism, and the motor shaft 61 is suitable for being in driving connection with the central shaft 7 through the transmission assembly 8, so that stepless speed change and zero rotating speed output are realized. When a drill string is held back or stuck during the drilling and repairing work, the load torque of the drill string is suddenly increased, the rotating speed can be rapidly reduced to zero, the rotary blocking function is realized, and the torque can be continuously output. The reverse rotation can be set according to the well condition, and the deformation torque stored in the drill column is released, so that the drill column can realize the function of relieving the suppressed drilling or stuck drilling. The reversing speed can be adjusted according to the drilling and workover process requirements, so that the speed is in a safe range, and the risk of reversing the underground drilling tool is reduced. Meanwhile, when the blockage is caused when related tools or salvaged falling objects meet a sleeve deformation area or a coupling annular space in the lifting process of the drill string, the speed can be rapidly reduced to remove the blockage, and therefore the working efficiency of drilling and repairing is improved.

In this embodiment the central shaft 7 is circular, square or of another shape which is also hollow whereby when the central shaft 7 connects the washpipe assembly 2 to the drill string, drilling fluid flowing from the washpipe assembly 2 passes through the central shaft 7 and into the drill string.

In this embodiment, the central shaft 7 needs to pass through the motor shaft 61, and therefore, the size of the hollow portion of the motor shaft 61 should be larger than that of the central shaft 7, for example, the motor shaft 61 is provided with a circular inner hole, the diameter of the inner hole is preferably 92mm, the central shaft 7 is circular and has an outer diameter smaller than that of the inner hole of the motor shaft 61, that is, the outer diameter of the central shaft 7 is smaller than 92mm, so as to avoid the central shaft 7 from being engaged in the inner hole of the motor shaft 61 and rotating along with the motor shaft 61, which results in that the.

In this embodiment, inverter motor 6 is located box 1, and for the convenience of inverter motor 6 heat dissipation, be equipped with the fan on motor shaft 61, from this, inverter motor 6 during operation, motor shaft 61 drives the fan and rotates to dispel the heat to inverter motor 6. Meanwhile, in order to properly arrange the space inside the case 1, the fan and transmission assembly 8 is respectively located at both ends of the motor shaft 61.

Alternatively, as shown in fig. 3, the transmission assembly 8 includes a primary planet carrier 83, a primary planet gear 82, a primary sun gear 81 connected to the motor shaft 61, a secondary planet carrier 86 connected to the central shaft 7, a secondary planet gear 85, and a secondary sun gear 84, wherein the primary sun gear 81 is adapted to be in driving connection with the primary planet carrier 83 through the primary planet gear 82, the primary planet carrier 83 is further adapted to be in driving connection with the secondary sun gear 84, and the secondary sun gear 84 is in driving connection with the secondary planet carrier 86 through the secondary planet gear 85. Therefore, the variable frequency motor 6 drives the central shaft 7 to rotate after being decelerated.

In the embodiment, the solar power generation device further comprises a primary inner gear ring and a secondary inner gear ring, wherein the primary inner gear ring and the secondary inner gear ring are installed in the box body 1, the primary inner gear ring is meshed with the primary planet gear 82, and the secondary inner gear ring is meshed with the secondary planet gear 85, so that the primary inner gear ring is fixed and is matched with the primary sun gear 81, and revolution and rotation of the primary planet gear 82 are facilitated; the secondary annular gear is fixed and is matched with the secondary sun gear 84, so that revolution and rotation of the secondary planet gear 85 are facilitated.

In this embodiment, when the variable frequency motor 6 works, the motor shaft 61 drives the first-stage sun gear 81 to rotate, the first-stage planetary gear 82 and the first-stage sun gear 81 are meshed and rotate, the first-stage planetary gear 82 drives the first-stage planetary gear 83 to revolve because the first-stage ring gear is fixed, the power on the variable frequency motor 6 is transmitted to the second-stage sun gear 84 through the first-stage planetary gear 83, the second-stage sun gear 84 and the second-stage planetary gear 85 are meshed, and the power is directly transmitted to the central shaft 7 after the second-stage sun gear 84 and the second-stage planetary gear 85 are meshed because the second-stage ring.

Optionally, the box 1 includes an upper box 13, a middle box 12 and a lower box 11 sequentially arranged along the penetrating direction of the central shaft 7, and the upper box 13 and the lower box 11 are detachably connected to two ends of the middle box 12 respectively. Therefore, the internal structure of the top drive is convenient to assemble, disassemble and overhaul.

In this embodiment, the upper box 13 and the lower box 11 are both connected to the middle box 12 through bolts, and two ends of the central shaft 7 respectively penetrate through the upper box 13 and the lower box 11, wherein one end of the central shaft 7 penetrating through the lower box 11 is provided with a conversion joint 5 for connecting a drill string.

In this embodiment, the lower box 11 is mainly used to accommodate and fix various bearings sleeved on the central shaft 7 and for the central shaft 7 to pass through, such as a thrust bearing 113, a thrust bearing 112, and a centering bearing 111, which are described later, so that, as shown in fig. 2, the lower box 11 may be designed into a cone shape, and a placing groove and a passage penetrating through the cone are provided inside to install various bearings and for the central shaft 7 to pass through, thereby the structure is more compact and reasonable, and compared with the design of a cylinder shape, the material consumption is saved, and the cost is reduced. Meanwhile, the main function of the upper box body 13 is to fix the washpipe assembly 2 and the lifting ring 4 (described below) at the outer side, so that the thickness of the upper box body is not excessive, the upper box body is designed into an end cover type, and a passage for the central shaft 7 to pass through is reserved in the middle. The material is saved and the cost is reduced.

Optionally, the top drive device further comprises a thrust bearing 113, and the thrust bearing 113 is installed in the lower box body 11 and sleeved on the central shaft 7. Thereby, the weight of the drill string can be borne when drilling and repairing the well. In this embodiment, the thrust bearing 113 is located on a side of the transmission assembly 8 away from the variable frequency motor 6, and is fixed in the lower box 11 and sleeved on the central shaft 7.

Optionally, the top drive device further includes a mounting bearing 131, and the mounting bearing 131 is mounted in the upper box 13 and sleeved on the central shaft 7. Thereby, the center shaft 7 is facilitated to smoothly pass through the upper case 13.

Optionally, the top drive device further comprises a thrust bearing 112 and/or a centering bearing 111, and the thrust bearing 112 and/or the centering bearing 111 are installed in the lower box 11 and sleeved on the central shaft 7.

When milling and grinding a drill string or a casing, the top drive needs to be pressed down, an upward force is generated on the drill string and is transmitted to a gear of the top drive along the axial direction, the thrust bearing 112 and the centering bearing 111 counteract the upward axial force, and the service life of the mounting bearing 131 is prolonged.

In the present embodiment, the centering bearing 111, the thrust bearing 112, and the thrust bearing 113 are disposed in this order along the direction of the center shaft 7 from the lower case 11 to the upper case 13, that is, the thrust bearing 112 is disposed between the centering bearing 111 and the thrust bearing 113. Thus, during the well drilling and repairing operation, the thrust bearing 113 bears the weight of the drill string during well drilling and repairing, and the thrust bearing 112 and the centralizing bearing 111 counteract the upward axial force.

Optionally, the top drive device further comprises a washpipe assembly 2, the washpipe assembly 2 is mounted on the box body 1, and one end of the central shaft 7 extends out of the box body 1 and is suitable for being communicated with the washpipe assembly 2.

In this embodiment, the washpipe assembly 2 is connected to the upper box 13 by bolts, so that the washpipe assembly 2 is stably fixed to the upper box 13. Meanwhile, one end of the central shaft 7, which extends out of the upper box body 13, is provided with a flange, the lower packing box of the washpipe assembly 2 is also provided with a flange, and the central shaft 7 and the lower packing box of the washpipe assembly 2 are connected together through the flange, so that when the variable frequency motor 6 works, the central shaft 7 can drive the lower packing box of the washpipe assembly 2 to rotate.

In this embodiment, one end of the washpipe assembly 2 is connected with the central shaft 7, and the other end of the washpipe assembly 2 is connected with the gooseneck 3, so that when the drilling and workover rig works, drilling fluid flows in from the gooseneck 3, passes through the washpipe assembly 2, enters the central shaft 7, and finally enters the drill string.

Optionally, the top drive device further comprises a lifting ring 4, and the lifting ring 4 is detachably connected with the box body 1.

In this embodiment, the lifting ring 4 is disposed on the upper case 13, specifically, a connecting rod 41 is disposed between the lifting ring 4 and the upper case 13, and two ends of the connecting rod 41 are detachably connected to the lifting ring 4 and the upper case 13, respectively, so that the whole top driving device is conveniently lifted by the lifting ring 4. Wherein, the lifting ring 4 can be in a ring shape, a triangle shape, a square shape or other shapes, which are not limited here, and can be selected according to actual requirements,

optionally, the lifting ring 4 and the box body 1 are provided with an avoiding space, and the washpipe assembly 2 is suitable for being located in the avoiding space.

In this embodiment, the washpipe assembly 2 and the lifting ring 4 are both arranged on the upper box body 13, and the washpipe assembly 2 is located at the central position above the upper box body 13, and when the top drive device is lifted by the lifting ring 4, the lifting ring 4 is also required to be arranged at the central position above the upper box body 13, so that the verticality of the whole top drive device is maintained, and the deflection is avoided, therefore, in order to avoid the interference between the washpipe body and the lifting ring 4, an avoiding space for placing the washpipe assembly 2 is arranged between the lifting ring 4 and the box body 1, and the reasonable distribution of the washpipe assembly 2 and the lifting ring 4 is realized.

Another object of the present invention is to provide a well drilling and repairing apparatus, comprising the top drive device as described above.

After the well drilling and repairing equipment is adopted, the central shaft 7 and the motor shaft 61 are coaxially arranged, the transmission assembly 8 is a planetary speed reducing mechanism, and the motor shaft 61 is suitable for being in driving connection with the central shaft 7 through the transmission assembly 8 and has stepless speed change and zero rotating speed output. When a drill string is held back or stuck during the drilling and repairing work, the load torque of the drill string is suddenly increased, the rotating speed can be rapidly reduced to zero, the rotary blocking function is realized, and the torque can be continuously output. The reverse rotation can be set according to the well condition, and the deformation torque stored in the drill column is released, so that the drill column can realize the function of relieving the suppressed drilling or stuck drilling. The reversing speed can be adjusted according to the drilling and workover process requirements, so that the speed is in a safe range, and the risk of reversing the underground drilling tool is reduced. Meanwhile, when the blockage is caused when related tools or salvaged falling objects meet a sleeve deformation area or a coupling annular space in the lifting process of the drill string, the speed can be rapidly reduced to remove the blockage, and therefore the working efficiency of drilling and repairing is improved.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to fall within the scope of the present disclosure.

Claims

1. The utility model provides a top drive device, its characterized in that includes box (1), center pin (7), sets up inverter motor (6) and drive assembly (8) in box (1), inverter motor (6) include casing and hollow motor shaft (61), the casing with box (1) are connected, motor shaft (61) run through the casing, center pin (7) are passed motor shaft (61) and both ends are stretched out box (1), drive assembly (8) are planet reduction gears, motor shaft (61) are suitable for to pass through drive assembly (8) with center pin (7) drive is connected.

2. A top drive arrangement according to claim 1, characterized in that said transmission assembly (8) comprises a primary planet carrier (83), a primary planet wheel (82), a primary sun wheel (81) connected to said motor shaft (61), a secondary planet carrier (86) connected to said central shaft (7), a secondary planet wheel (85) and a secondary sun wheel (84),

the primary sun gear (81) is suitable for being in driving connection with the primary planet carrier (83) through the primary planet gear (82), the primary planet carrier (83) is also suitable for being in driving connection with the secondary sun gear (84), and the secondary sun gear (84) is in driving connection with the secondary planet carrier (86) through the secondary planet gear (85).

3. A top drive apparatus according to claim 1, wherein said casing (1) comprises an upper casing (13), a middle casing (12) and a lower casing (11) sequentially arranged along the direction of penetration of said central shaft (7), said upper casing (13) and said lower casing (11) being detachably connected to both ends of said middle casing (12), respectively.

4. A top drive apparatus as claimed in claim 3, further comprising a thrust bearing (113), said thrust bearing (113) being mounted in said lower housing (11) and being fitted over said central shaft (7).

5. A top drive apparatus as claimed in claim 3, further comprising a mounting bearing (131), said mounting bearing (131) being mounted in said upper housing (13) and fitted over said central shaft (7).

6. A top drive apparatus as claimed in claim 5, further comprising a thrust bearing (112) and/or a righting bearing (111), said thrust bearing (112) and/or said righting bearing (111) being mounted in said lower box (11) and fitted over said central shaft (7).

7. A top drive apparatus as claimed in claim 1, further comprising a washpipe assembly (2), said washpipe assembly (2) being mounted on said tank (1), one end of said central shaft (7) extending out of said tank (1) and being adapted to communicate with said washpipe assembly (2).

8. A top drive apparatus as claimed in claim 7, further comprising a bail (4), said bail (4) being removably connected to said case (1).

9. A top drive apparatus as claimed in claim 8, wherein an escape space is provided between said bail (4) and said tank (1), said washpipe assembly (2) being adapted to be located in said escape space.

10. A well drilling and workover rig comprising a top drive as claimed in any one of claims 1 to 9.