All-metal intelligent control power drill

Abstract

The application belongs to the technical field of oil drilling, and particularly relates to a full-metal intelligent control power drilling tool. The technical scheme is as follows: the full-metal intelligent control power drilling tool comprises an electric control module, a power module and a transmission module; the electric control module determines the axial position of a connecting rod valve through an electromagnet and controls the connection of the connecting rod valve and a piston through a motor; in the power module, the drilling fluid hydraulic pressure and spring reaction force drive the double worm axial movement, and under the action of the worm-shaped internal teeth on the inner surface of the shell, the double worm moves in the circumferential direction, and the one-way bearing ensures that the power module only transmits single direction movement; the transmission module limits the axial position of the power module through a TC bearing and transmits the circumferential movement, the drilling pressure and the torque to the lower drilling tool. The application provides a full-metal intelligent control power drilling tool, which is suitable for various deep well exploration, has strong drilling force, low cost and strong applicability.

Description

Technical Field

[0001] This invention belongs to the field of oil drilling technology, specifically relating to all-metal intelligent control power drilling tools. Background Technology

[0002] Currently, 73% of my country's undiscovered oil reserves are located in deep and ultra-deep formations. China National Petroleum Corporation (CNPC) has over 700 wells exceeding 4,000 meters in depth and over 150 wells exceeding 6,000 meters. Deep and ultra-deep well operations face numerous challenges, such as more complex and difficult-to-drill rock properties, increased exploration and extraction difficulties, lower mechanical drilling speeds, longer drilling cycles, higher drilling costs, more challenging drilling environments, and insufficient surface power for rock breaking. Conventional downhole power drilling tools have many limitations and inconveniences in deep and ultra-deep well drilling. Highly adaptable, reliable, efficient, and intelligent downhole power drilling tools are essential for further exploration. Summary of the Invention

[0003] The purpose of this invention is to provide a highly adaptable and efficient all-metal intelligent control power drilling tool.

[0004] To achieve the above-mentioned objectives, the technical solution adopted by this invention is as follows: The all-metal intelligent control power drill consists of an electrical control module, a power module, and a transmission module, which are respectively: an upper connecting sleeve, a connecting rod valve cover, a connecting rod valve, a signal output module, a lower connecting sleeve, a piston, a signal receiving module, an upper plane thrust ball bearing, a right-hand worm gear, a right-hand drive shaft, a lower plane thrust ball bearing, a left-hand worm gear, an upper tandem bearing, a housing, an end cover, an upper one-way bearing, a lower one-way bearing, a connecting shaft, a one-way shaft, a spring, a drive shaft housing, an upper TC bearing moving ring, an upper moving ring alloy, and an upper stationary ring alloy. The all-metal intelligent control power drill bit consists of an upper TC bearing stationary ring, a drive shaft, a lower tandem bearing, a pressure sleeve, a half-ring, a spacer, a lower TC bearing moving ring, a lower moving ring alloy, a lower stationary ring alloy, and a lower TC bearing stationary ring. All components are coaxial. Both ends of the all-metal intelligent control power drill bit are detachably connected. The upper connecting sleeve is the drilling fluid inlet, and the upper connecting sleeve, lower connecting sleeve, outer shell, and drive shaft outer shell are sequentially connected via tapered threads. A signal output module is provided between the connecting rod valve cover and the connecting rod valve, and the signal output module and signal receiving module are connected via wireless communication. The piston uses... An electromagnetic clamp secures and releases the connecting rod valve; an upper surface thrust ball bearing is installed between the piston and the right-hand worm gear to prevent piston rotation; the right-hand worm gear and the right-hand drive shaft are connected by a key structure; a lower surface thrust ball bearing is installed between the right-hand worm gear and the left-hand worm gear; an upper spool bearing is installed between the left-hand worm gear and the right-hand drive shaft; an upper one-way bearing and a lower one-way bearing are respectively installed between the left-hand worm gear, the right-hand drive shaft, and the connecting shaft; the connecting shaft and the end cover are connected by screws to restrict the axial position of the upper one-way bearing; the connecting shaft has a boss inside to separate the upper one-way bearing from the lower one-way bearing. One-way bearing; the connecting shaft is splined to the one-way shaft, and a spring is installed in the inner cavity of the connecting shaft and the one-way shaft; the drive shaft is threaded to the one-way shaft, and the lower end of the drive shaft is connected to other downhole drilling tools; the upper TC bearing consists of the moving ring, the alloy of the upper moving ring, the alloy of the upper stationary ring, and the stationary ring of the upper TC bearing; the lower TC bearing consists of the moving ring, the alloy of the lower moving ring, the alloy of the lower stationary ring, and the stationary ring of the lower TC bearing; a lower tandem bearing, a pressure sleeve, a half ring, and a spacer are installed between the upper TC bearing and the lower TC bearing; the pressure sleeve and the half ring can axially limit and transmit drilling pressure.

[0005] Preferably, a signal output module is installed in the connecting rod valve and the connecting rod valve cover. The signal output module includes a control board, a Hall sensor, a battery, and a signal transmitter. A signal receiving module is installed inside the piston. The signal receiving module includes a control board, a signal receiver, a battery, a brushless motor, and a speed and direction sensor.

[0006] Preferably, the piston consists of an outer piston ring and an inner piston ring, the outer piston ring being solid and the inner piston ring being hollow, and a signal receiving module is installed thereon; the signal receiving module transmits electrical signals to the electromagnet through the internal channel of the piston.

[0007] Preferably, the upper connecting sleeve and the lower connecting sleeve have protrusions inside, and the protrusions are equipped with ring magnets; the signal output module senses the magnetic signal of the magnetic rings of the upper connecting sleeve and the lower connecting sleeve through the Hall effect, and wirelessly transmits the position signal to the signal receiving module.

[0008] Preferably, the signal receiving module receives the wireless communication signal from the signal transmission module, and controls the internal motor and the switch of the electromagnet according to the position of the connecting rod valve, thereby controlling the clamping and releasing of the electromagnet clamp.

[0009] Preferably, the piston and the outer shell are sealed with a sealing ring, the inner surface of the outer shell is surface treated, and the inner surface of the outer shell is provided with right-hand spiral internal teeth and left-hand spiral internal teeth. The outer shell is provided with oil injection holes corresponding to the right-hand spiral internal teeth and the left-hand spiral internal teeth.

[0010] Preferably, in the above scheme, the connecting shaft is coaxial with the lower spring, and the spring has a certain preload.

[0011] Preferably, in the above scheme, the drive shaft housing and TC bearing in the transmission module axially limit the power module and can withstand the pressure of the upper drilling tool; the upper and lower TC bearings axially limit the drive shaft housing and transmit the pressure and impact of the power module.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This invention provides a novel all-metal intelligent control power drill bit with strong adaptability. Compared with the current mainstream downhole power drill bits, it has high reliability, can generate impact-assisted rock breaking, and can achieve continuous rotation of the drill bit when combined with a double worm gear.

[0014] 2. All parts of this invention can be made of high-temperature resistant metals, possessing high durability and wear resistance. It can withstand significant pressure and weight, and is not easily worn or damaged due to prolonged use; it can drill deep wells, is not prone to failure in complex and variable underground environments, and is simple to operate, requiring no special training for operators.

[0015] 3. This invention is ingeniously designed, low in cost, and easier to maintain and care for than other types of drilling tools. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the connecting rod valve.

[0018] Figure 3 This is a schematic diagram of the piston structure;

[0019] Figure 4 This is the circuit schematic for the signal output module;

[0020] Figure 5 This is the circuit schematic of the signal receiving module;

[0021] Figure 6 This is a schematic diagram of a unidirectional shaft structure;

[0022] Explanation of reference numerals in the attached drawings: 1. Upper connecting sleeve; 2. Connecting rod valve cover; 3. Connecting rod valve, 301. Connecting rod valve valve; 4. Signal output module; 5. Lower connecting sleeve; 6. Piston; 7. Signal receiving module; 8. Upper plane thrust ball bearing; 9. Right-hand worm gear; 10. Right-hand drive shaft; 11. Lower plane thrust ball bearing; 12. Left-hand worm gear; 13. Upper spool bearing; 14. Housing, 1401. Right-hand worm gear, 1402. Left-hand worm gear; 15. End cap; 16. Upper one-way bearing; 17. Lower one-way bearing; 18. Connecting shaft; 19. One-way shaft, 1901 threaded hole, 1902 spline; 20. Spring; 21. Drive shaft housing; 22. Upper TC bearing moving ring; 23. Upper moving ring alloy; 24. Upper stationary ring alloy; 25. Upper TC bearing stationary ring; 26. Drive shaft; 27. Lower tandem bearing; 28. Pressure sleeve; 29. ​​Half ring; 30. Spacer; 31. Lower TC bearing moving ring; 32. Lower moving ring alloy; 33. Lower stationary ring alloy; 34. Lower TC bearing stationary ring. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings:

[0024] like Figure 1 The all-metal intelligent control power drill bit shown is applicable to various drilling situations. It should be noted that this invention will be applied to oil drilling, but is not limited to this application.

[0025] The all-metal intelligent control power drill is characterized in that it comprises an electrical control module, a power module, and a transmission module, which are respectively: upper connecting sleeve 1, connecting rod valve cover 2, connecting rod valve 3, signal output module 4, lower connecting sleeve 5, piston 6, signal receiving module 7, upper plane thrust ball bearing 8, right-hand worm gear 9, right-hand drive shaft 10, lower plane thrust ball bearing 11, left-hand worm gear 12, upper tandem bearing 13, housing 14, end cover 15, upper one-way bearing 16, lower one-way bearing 17, connecting shaft 18, one-way shaft 19, spring 20, drive shaft housing 21, upper TC bearing moving ring 22, upper moving ring alloy 23, upper stationary ring alloy 24, upper TC bearing stationary ring 25. 5. Drive shaft 26, lower spool bearing 27, pressure sleeve 28, semi-ring 29, spacer 30, lower TC bearing moving ring 31, lower moving ring alloy 32, lower stationary ring alloy 33, lower TC bearing stationary ring 34; all components of the all-metal intelligent control power drill are coaxial; both ends of the all-metal intelligent control power drill are detachably connected; the upper connecting sleeve 1 is the drilling fluid inlet, and the upper connecting sleeve 1, lower connecting sleeve 5, outer shell 14, and drive shaft outer shell 21 are sequentially connected by tapered threads to form the stator part of the entire tool; a signal output module 4 is provided between the connecting rod valve cover 2 and the connecting rod valve 3, and the signal output module 4 is connected to the signal receiving module 7 via wireless communication; the piston 6 is clamped by an electromagnetic clamp. The connecting rod valve 3 is fixed and released; an upper surface thrust ball bearing 8 is installed between the piston 6 and the right-hand worm gear 9 to prevent the piston 6 from rotating; the right-hand worm gear 9 and the right-hand drive shaft 10 are connected by a key structure and rotate synchronously; a lower surface thrust ball bearing 11 is installed between the right-hand worm gear 9 and the left-hand worm gear 12; an upper spool bearing 13 is installed between the left-hand worm gear 12 and the right-hand drive shaft 10; an upper one-way bearing 16 and a lower one-way bearing 17 are respectively installed between the left-hand worm gear 12, the right-hand drive shaft 10 and the connecting shaft 18; the connecting shaft 18 and the end cover 15 are connected by screws to limit the axial position of the upper one-way bearing 16; the connecting shaft 18 has a boss inside to separate the upper one-way bearing 16 and the lower one-way bearing. 17; The connecting shaft 18 is splinedly connected to the one-way shaft 19, and a spring 20 is installed in the inner cavity of the connecting shaft 18 and the one-way shaft 19; The drive shaft 26 is threadedly connected to the one-way shaft 19, and the lower end of the drive shaft 26 is connected to other downhole drilling tools; The upper TC bearing consists of the moving ring 22, the upper moving ring alloy 23, the upper stationary ring alloy 24, and the upper TC bearing stationary ring 25; The lower TC bearing consists of the moving ring 31, the lower moving ring alloy 32, the lower stationary ring alloy 33, and the lower TC bearing stationary ring 34; A lower tandem bearing 27, a pressure sleeve 28, a half ring 29, and a spacer 30 are installed between the upper TC bearing and the lower TC bearing; The pressure sleeve 28 and the half ring 29 can axially limit and transmit drilling pressure.

[0026] like Figure 1 , Figure 2 , Figure 4As shown, in the above scheme, a signal output module 4 is installed in the connecting rod valve 3 and the connecting rod valve cover 2. The signal output module 4 includes a control board, a Hall sensor, a battery, and a signal transmitter; the connecting rod valve 301 cooperates with the piston 6 to control the pressure of the drilling fluid.

[0027] like Figure 1 , Figure 3 , Figure 5 As shown, in the above scheme, the piston 6 is divided into an outer piston ring 601 and an inner piston ring 602. The outer piston ring 601 is solid, and the inner piston ring 602 is hollow. A signal receiving module 7 is installed thereon. The signal receiving module 7 includes a control board, a signal receiver, a battery, a brushless motor, and a speed and direction sensor. The signal receiving module 7 transmits electrical signals to the electromagnet 604 through the internal channel 603 of the piston, controlling the electromagnet 604 to attract and repel the permanent magnet 605.

[0028] like Figure 1 As shown, in the above scheme, the upper connecting sleeve 1 and the lower connecting sleeve 5 have protrusions inside, and the protrusions are equipped with ring magnets; the signal output module 4 senses the magnetic signal of the magnetic rings of the upper connecting sleeve 1 and the lower connecting sleeve 5 through the Hall effect, and wirelessly transmits the position signal to the signal receiving module 7.

[0029] like Figure 1 As shown, in the above scheme, the signal receiving module 7 receives the wireless communication signal from the signal transmission module 4, controls the internal motor and the switch of the electromagnet 604 according to the position of the valve of the connecting rod 3, thereby controlling the clamping and loosening of the electromagnet clamp.

[0030] like Figure 1 As shown, in the above scheme, the piston 6 and the outer shell 14 are sealed with a sealing ring. The inner surface of the outer shell 14 is surface treated. The inner surface of the outer shell 14 is provided with right-hand spiral internal teeth 1401 and left-hand spiral internal teeth 1402. Oil injection holes are provided at the corresponding locations of the right-hand spiral internal teeth 1401 and left-hand spiral internal teeth 1402. The right-hand spiral worm 9 rotates along the right-hand spiral internal teeth 1401. The left-hand spiral worm 12 rotates along the left-hand spiral internal teeth 1402.

[0031] like Figure 1 , Figure 6 As shown, in the above scheme, the connecting shaft 18 is coaxial with the lower spring 20, and the spring 20 has a certain preload; the outer diameter of the connecting shaft 18 is smaller than the inner diameter of the lower transmission shaft 26, and the connecting shaft 18 can move axially inside the transmission shaft 26 without interfering with each other.

[0032] like Figure 1As shown, in the above scheme, the drive shaft housing 21 and TC bearing in the transmission module axially limit the power module and can withstand the pressure of the upper drilling tool; the upper and lower TC bearings axially limit the drive shaft housing 21 and transmit the pressure and impact of the power module.

[0033] The working process of the all-metal intelligent control power drill is described below with reference to the accompanying drawings.

[0034] by Figure 1 The state shown is the initial state. The connecting rod valve cover 2 is tightly attached to the boss of the upper connecting sleeve 1, and the electromagnet clamp in the piston 6 is tightly gripping the valve stem of the connecting rod valve 3. When the drilling fluid enters the tool from the upper connecting sleeve 1, the drilling fluid is pressurized because the connecting rod valve 301 blocks the valve hole of the piston 6, pushing the connecting rod valve 3 and the piston 6 downward. The piston 6 pushes the right-hand worm 9 and the left-hand worm 12 to move downward in a spiral motion. The clockwise rotation of the right-hand worm 9 is transmitted to the connecting shaft 18, the one-way shaft 19 and the drive shaft 26 through the right-hand drive shaft 10 and the lower one-way bearing 17. The counterclockwise rotation generated by the left-hand worm 12 is not transmitted to the connecting shaft 18 because the upper one-way bearing 16 does not transmit it. Therefore, the drive shaft 26 transmits the clockwise rotation to the lower drill string. At the same time, the Hall effect sensor in the signal output module 4 senses the magnetic field strength of the upper connecting sleeve 1 and the lower connecting sleeve 5 and wirelessly transmits the distance signal to the signal receiving module 7. The spring 20 is compressed.

[0035] When the lower end of the connecting rod valve 3 moves to the contact with the boss of the lower connecting sleeve 5, it is forced to stop. The signal output module 4 transmits a wireless signal to the signal receiving module 7. The signal receiving module 7 controls the electromagnet to de-energize, and the electromagnet clamps release the valve stem of the connecting rod valve 3. The drilling fluid is depressurized through the valve hole of the piston 6. At this time, the connecting rod valve 3 has no axial displacement, and the drilling fluid pressure is still greater than the reaction force of the spring 20.

[0036] After a period of depressurization, the connecting shaft 18 moves in the reverse direction, pushing the right-hand worm 9, the left-hand worm 12, and the piston 6 to move upward in a spiral motion. At the same time, the speed sensor in the signal receiving module 7 senses the change in speed direction and controls the electromagnet to be energized. The electromagnet clamps the valve stem of the connecting rod valve 3. The piston 6 and the connecting rod valve 3 move upward synchronously. The left-hand worm 12 transmits the clockwise rotational motion to the connecting shaft 18, the one-way shaft 19, and the drive shaft 26 through the upper one-way bearing 16. The counterclockwise rotation generated by the right-hand worm 9 and the right-hand drive shaft 10 is not transmitted to the connecting shaft 18 by the lower one-way bearing 17. Therefore, the drive shaft 26 transmits the clockwise rotation to the lower drill bit. At the same time, the Hall effect sensor in the signal output module 4 senses the magnetic field strength of the upper connecting sleeve 1 and the lower connecting sleeve 5 and wirelessly transmits the distance signal to the signal receiving module 7. The spring 20 gradually extends.

[0037] When the connecting rod valve cover 2 moves to the contact sleeve 1 boss, it is forced to stop. The signal output module 4 transmits a wireless signal to the signal receiving module 7. The signal receiving module 7 controls the electromagnet to de-energize, and the electromagnet clamp releases the connecting rod valve 3 stem. The valve orifice of the piston 6 is in the open state. The reaction force of the spring 20 is greater than the drilling fluid pressure, and the piston 6 moves upward axially. The connecting rod valve 3 has no axial displacement until the connecting rod valve 301 is close to the piston 6, returning to the position as shown. Figure 1 As shown, the drilling fluid cannot pass through, and the pressure is built up again, thus creating a cycle.

[0038] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. An all-metal intelligent control power drilling tool, characterized in that: The all-metal intelligent control power drill consists of the following components: Electrical control module: upper connecting sleeve (1), connecting rod valve cover (2), connecting rod valve (3), signal output module (4), lower connecting sleeve (5), piston (6), signal receiving module (7); Power module: upper plane thrust ball bearing (8), right-hand worm gear (9), right-hand drive shaft (10), lower plane thrust ball bearing (11), left-hand worm gear (12), upper tandem bearing (13), housing (14), end cap (15), upper one-way bearing (16), lower one-way bearing (17), connecting shaft (18), one-way shaft (19), spring (20); Transmission module: transmission shaft housing (21), upper TC bearing moving ring (22), upper moving ring alloy (23). The all-metal intelligent control power drill is composed of an upper stationary ring alloy (24), an upper TC bearing stationary ring (25), a drive shaft (26), a lower spool bearing (27), a pressure sleeve (28), a half ring (29), a spacer (30), a lower TC bearing moving ring (31), a lower moving ring alloy (32), a lower stationary ring alloy (33), and a lower TC bearing stationary ring (34); all components of the all-metal intelligent control power drill are coaxial; both ends of the all-metal intelligent control power drill are detachable; the upper connecting sleeve (1) is the drilling fluid inlet, and the upper connecting sleeve (1) is connected to the lower connecting sleeve (5), the outer shell (14), and the drive shaft outer shell (21) in sequence by tapered threads; the connecting rod valve (3) and the piston (6) are axially limited by an electromagnetic clamp; An upper surface thrust ball bearing (8) is installed between the piston (6) and the right-hand worm (9), and the right-hand worm (9) is connected to the right-hand drive shaft (10) by a key structure; a lower surface thrust ball bearing (11) is installed between the right-hand worm (9) and the left-hand worm (12), and an upper spool bearing (13) is installed between the left-hand worm (12) and the right-hand drive shaft (10); an upper one-way bearing (16) and a lower one-way bearing (17) are respectively installed and welded between the left-hand worm (12), the right-hand drive shaft (10), and the connecting shaft (18); the connecting shaft (18) has a boss inside, separating the upper one-way bearing (16) and the lower one-way bearing (17); the connecting shaft (18) and the one-way shaft (19) A spline connection is provided, and a spring (20) is installed in the inner cavity of the connecting shaft (18) and the one-way shaft (19); the transmission shaft (26) is threadedly connected to the one-way shaft (19); the upper TC bearing consists of the moving ring (22), the upper moving ring alloy (23), the upper stationary ring alloy (24), and the upper TC bearing stationary ring (25); the lower TC bearing consists of the moving ring (31), the lower moving ring alloy (32), the lower stationary ring alloy (33), and the lower TC bearing stationary ring (34); a lower cascade bearing (27), a pressure sleeve (28), a half ring (29), and a spacer (30) are installed between the upper TC bearing and the lower TC bearing; the pressure sleeve (28) and the half ring (29) can axially limit and transmit drilling pressure.

2. The all-metal intelligent control power drilling tool according to claim 1, characterized in that: A signal output module (4) is installed in the connecting rod valve (3) and the connecting rod valve cover (2). The signal output module (4) includes a control board, a Hall sensor, a battery and a signal transmitter. A signal receiving module (7) is installed inside the piston (6). The signal receiving module (7) includes a control board, a signal receiver, a battery and a brushless motor and a speed direction sensor. The connecting rod valve (301) and the piston (6) cooperate to control the pressure of the drilling fluid.

3. The all-metal intelligent control power drilling tool according to claim 1, characterized in that: The piston (6) is divided into an outer piston ring (601) and an inner piston ring (602). The outer piston ring (601) is solid, and the inner piston ring (602) is hollow. A signal receiving module (7) is installed thereon. The signal receiving module (7) transmits electrical signals to the electromagnet (604) through the internal channel (603) of the piston.

4. The all-metal intelligent control power drilling tool according to claim 1, characterized in that: The upper connecting sleeve (1) and the lower connecting sleeve (5) have protrusions inside, and the protrusions are provided with ring magnets; the signal output module (4) senses the magnetic signal of the magnetic ring and transmits it to the signal receiving module (7).

5. The all-metal intelligent control power drilling tool according to claim 1, characterized in that: The signal receiving module (7) receives the wireless communication signal from the signal output module (4), and controls the internal motor and the switch of the electromagnet (604) according to the position of the connecting rod valve (3).

6. The all-metal intelligent control power drilling tool according to claim 1, characterized in that: The piston (6) is sealed with a sealing ring between it and the outer shell (14). The inner surface of the outer shell (14) is surface treated. The inner surface of the outer shell (14) is provided with right-hand spiral internal teeth (1401) and left-hand spiral internal teeth (1401). The corresponding outer shell is provided with an oil injection hole.

7. The all-metal intelligent control power drilling tool according to claim 1, characterized in that: The connecting shaft (18) is coaxial with the spring (20), and the spring (20) has a certain preload; the outer diameter of the connecting shaft (18) is smaller than the inner diameter of the lower transmission shaft (26).

8. The all-metal intelligent control power drilling tool according to claim 1, characterized in that: The drive shaft housing (21) in the transmission module and the TC bearing limit the axial movement of the power module; the upper and lower TC bearings limit the axial movement of the drive shaft housing (21).

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