All-metal high-frequency supporting and pressing prevention tool

Abstract

The utility model belongs to the technical field of screw drilling tools, and particularly relates to an all-metal high-frequency supporting and pressing prevention tool which comprises a vibration shell, a drainage piece, a flow guide piece, a semi-ring, a lock cap, a back cap, a bearing, an anvil, an impact hammer, a valve plate, a throttling nozzle, an upper wear-resistant seat, a clamp spring, a mandrel assembly, a wear-resistant plate, a lower wear-resistant seat and a lower seat connector. The device can be ensured to resist high temperature of 180-260 DEG C and frequency of 30-60 Hz in a low-pressure state, and still has higher oscillator energy and better resistance reduction effect when being used in an ultra-deep well.

Description

Technical Field

[0001] The utility model belongs to the technical field of screw drill tools, and in particular relates to an all-metal high-frequency anti-support pressure tool. Background Art

[0002] The anti-pressure tool (hydraulic oscillator) is a special tool used to speed up drilling, and has been widely used in horizontal wells and large-displacement directional wells. The existing motor-type hydraulic oscillator has a maximum temperature resistance of 180°C and a frequency of 14-22HZ, which cannot meet the requirements of ultra-high temperature wells with a well temperature higher than 180°C. The 210°C rubber at home and abroad is currently unstable and difficult to use for a long time; moreover, with the extension of the wellbore, the frequency of the hydraulic oscillator needs to be increased to increase the combat radius. Utility Model Content

[0003] The utility model aims to provide a full-metal high-frequency anti-pressure tool to solve the problems existing in the prior art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an all-metal high-frequency anti-support pressure tool, comprising a vibration shell, a guide piece, a guide piece, a half ring, a lock cap, a back cap, a bearing, an anvil, an impact hammer, a distribution plate, a throttling nozzle, an upper wear-resistant seat, a retaining spring, a mandrel assembly, a wear-resistant plate, a lower wear-resistant seat and a lower seat joint, wherein the vibration shell is threadedly connected to the lower seat joint, the guide piece is threadedly connected to the guide piece, the guide piece is provided with water holes around it, the guide piece, the half ring and the lock cap are installed on one side of the mandrel assembly, and the guide piece, the half ring and the lock cap are installed on the one side of the mandrel assembly. end, the locking cap is installed between the vibration housing and the mandrel assembly; the back cap is installed on the mandrel assembly; the upper bearing and the lower bearing are respectively installed at the two ends of the distribution plate; the distribution plate is installed on the mandrel assembly; the anvil is connected to the mandrel assembly; the impact hammer is installed on the distribution plate; the throttling nozzle is installed in the mandrel assembly and fixed by the retaining spring; the upper wear-resistant seat is connected to the anvil; the wear-resistant disc is installed in the upper wear-resistant seat; another wear-resistant disc is installed in the lower wear-resistant seat; the lower wear-resistant seat is connected to the lower seat joint. The all-metal high-frequency anti-support pressure tool converts the mud hydraulic energy into high-frequency, stable circumferential vibration impact energy through the reversing mechanism, and changes the impact frequency by adjusting the nozzle. The tool has a precise resonant frequency, reduces drill pipe friction, and provides greater mechanical drilling speed and expansion capacity; it can provide a high-frequency impact frequency of 30 to 60Hz, and a vibration force of 600-1500LBS.

[0005] Preferably, the guide member, flow guide member, half ring, locking cap, back cap, bearing, anvil, impact hammer, distribution plate, throttling nozzle, upper wear-resistant seat, retaining spring, core shaft assembly, wear-resistant plate and lower wear-resistant seat are all located inside the vibration shell.

[0006] Preferably, a flow guide channel is provided on the core shaft assembly above the throttling nozzle and is communicated with the lower space of the anvil.

[0007] Preferably, there are two wear-resistant discs.

[0008] Preferably, the first O-ring is installed between the throttling nozzle and the core shaft assembly.

[0009] Preferably, the second O-ring is installed between the anvil and the upper wear-resistant seat.

[0010] Preferably, the third O-ring is mounted on the lower seat joint.

[0011] Preferably, a long hole is provided around the middle of the core shaft assembly.

[0012] The beneficial effects of the utility model are as follows: the device can ensure that it can resist high temperatures of 180-260°C and a frequency of 30-60Hz under low pressure, and still have high oscillator energy and good drag reduction effect when used in ultra-deep wells; at the same time, the low pressure state can effectively reduce component erosion, facilitate long-term stable use of tools, and improve product yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a partial enlarged view of the utility model. DETAILED DESCRIPTION

[0015] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings and preferred embodiments.

[0016] like Figure 1-2As shown, an all-metal high-frequency anti-support pressure tool comprises a vibration shell 1, a flow guide 2, a flow guide 3, a half ring 4, a locking cap 5, a back cap 6, an upper bearing 7, an anvil 8, an impact hammer 9, a distribution plate 10, a lower bearing 11, a first O-ring 12, a throttling nozzle 13, a second O-ring 14, an upper wear-resistant seat 15, a retaining ring 16, a spindle assembly 17, a wear-resistant disc 18, a lower wear-resistant seat 19, a third O-ring 20 and a lower seat joint 21; the flow guide 2 is connected to the flow guide 3; the flow guide 3 is connected to the spindle assembly 17; the half ring 4 is installed on the spindle assembly 17; the locking cap 5 is installed on the spindle assembly 17; the back cap 6 is installed in the spindle assembly 17; the upper bearing 7 and the lower bearing 11 are respectively installed at both ends of the distribution plate 10; the distribution plate 1 0 is installed on the mandrel assembly 17; the anvil 8 is connected to the mandrel assembly 17; the impact hammer 9 is installed on the distribution plate 10; the throttling nozzle 13 is installed in the mandrel assembly 17 and is fixed by the retaining spring 16; the upper wear-resistant seat 15 is connected to the anvil 8; the wear-resistant disc 18 is installed in the upper wear-resistant seat 15; another wear-resistant disc is installed in the lower wear-resistant seat 19; the lower wear-resistant seat 19 is connected to the lower seat joint 21; the lower seat joint 21 is connected to the vibration shell 1; the lower bearing 11 is installed in the mandrel assembly 17; the first O-ring 12 is installed between the throttling nozzle 13 and the mandrel assembly 17, the second O-ring 14 is installed between the anvil 8 and the upper wear-resistant seat 15, and the third O-ring 20 is installed on the lower seat joint 21. The tool has a precise resonant frequency, reduces drill pipe friction, and provides greater mechanical drilling speed and expansion capabilities; it can provide a high-frequency impact frequency of 30 to 60 Hz, and a vibration force of 600-1500 LBS.

[0017] The all-metal high-frequency anti-pressure tool is a new design. Its core is based on the existing motor-type hydraulic oscillator and adopts all-metal hydraulic mechanical components. The pulse pressure is lower and the working pressure drop is 0.5Mpa-1.2Mpa (the pressure drop of conventional hydraulic oscillators is 2Mpa~2.8Mpa). The design of the new impact hammer breaks through the design concept of the previous conventional oscillation short section, reduces the internal pulse pressure, and the components use special wear-resistant coatings to increase the service life. At the same time, it reduces the fluid erosion and wear inside the tool. The high-frequency impact vibration releases more oscillation energy farther, thereby better exerting the tool's friction reduction performance and effectively improving the tool's use effect.

[0018] Structural advantages

[0019] Pure mechanical structure, no rubber components, no electronic components;

[0020] The lateral vibration tool is used, which can provide a precise vibration to the drill string without interfering with the MWD signal;

[0021] Providing high-frequency simple harmonic vibration to reduce static friction, alleviate stick-slip phenomenon, better transmit drilling pressure to the drill bit, and effectively increase mechanical drilling speed;

[0022] The overall through-hole design makes it possible to use wired drilling tools when needed.

[0023] It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications should also be regarded as the protection scope of the utility model.

Claims

1. An all-metal high-frequency anti-pressure tool, characterized in that: The invention comprises a vibration shell, a flow guide, a flow guide, a half ring, a locking cap, a back cap, an upper bearing, a lower bearing, an anvil, an impact hammer, a distribution plate, a throttling nozzle, an upper wear-resistant seat, a retaining spring, a core shaft assembly, a wear-resistant plate, a lower wear-resistant seat and a lower seat joint. The vibration shell is threadedly connected to the lower seat joint, the flow guide is threadedly connected to the flow guide, the flow guide is provided with water holes around it, the flow guide, the half ring and the locking cap are installed at one end of the core shaft assembly, and the locking cap is installed on the vibration shell and the core shaft assembly; the back cap is mounted on the core shaft assembly; the upper bearing and the lower bearing are respectively mounted on the two ends of the distribution plate; the distribution plate is mounted on the core shaft assembly; the anvil is connected to the core shaft assembly; the impact hammer is mounted on the distribution plate; the throttling nozzle is mounted in the core shaft assembly and fixed by the retaining spring; the upper wear-resistant seat is connected to the anvil; the wear-resistant disc is mounted in the upper wear-resistant seat; another wear-resistant disc is installed in the lower wear-resistant seat; the lower wear-resistant seat is connected to the lower seat joint.

2. The all-metal high-frequency anti-pressure tool according to claim 1, characterized in that: The flow guide, flow guide, half ring, lock cap, back cap, bearing, anvil, impact hammer, distribution plate, throttling nozzle, upper wear-resistant seat, retaining spring, core shaft assembly, wear-resistant plate and lower wear-resistant seat are all located inside the vibration shell.

3. The all-metal high-frequency anti-squeeze tool according to claim 1, characterized in that: A flow guide channel is arranged on the core shaft assembly above the throttling nozzle and is communicated with the lower space of the anvil.

4. The all-metal high-frequency anti-squeeze tool according to claim 1, characterized in that: There are two wear-resistant discs.

5. The all-metal high-frequency anti-squeeze tool according to claim 1, characterized in that: The first O-type sealing ring is installed between the throttling nozzle and the core shaft assembly.

6. The all-metal high-frequency anti-pressure tool according to claim 1, characterized in that: A second O-ring is mounted between the anvil and the upper wear-resistant seat.

7. The all-metal high-frequency anti-squeeze tool according to claim 1, characterized in that: The third O-ring is mounted on the lower seat joint.

8. The all-metal high-frequency anti-squeeze tool according to claim 1, characterized in that: A long hole is arranged around the middle of the core shaft assembly.

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