Mechanical and hydraulic combined well drilling jar knocker

Abstract

The utility model discloses a mechanical hydraulic combined well drilling jar, which belongs to the field of mine well drilling tools and comprises an outer cylinder component. The first end of the inner cylinder assembly is located outside the first end of the outer cylinder assembly and connected with an upper drilling tool, at least part of the second end of the inner cylinder assembly extends into the outer cylinder assembly, and the second end of the outer cylinder assembly is connected with a lower drilling tool. An upper hydraulic vibration mechanism and a lower hydraulic vibration mechanism; a mechanical vibration mechanism; wherein the upper hydraulic vibration mechanism is arranged between the outer cylinder assembly and the inner cylinder assembly, located on the upper portion of the jar and generates upward jarring through hydraulic pressure, the lower hydraulic vibration mechanism is located on one side of the upper hydraulic vibration mechanism and generates downward jarring through hydraulic pressure, and the mechanical vibration mechanism is located on the lower portion of the jar and generates upward or downward jarring through machinery. When the mechanical and hydraulic combined well drilling jar knocker is assembled, a mechanical structure, a hydraulic structure or a mechanical and hydraulic structure can be selected according to requirements, and different use requirements are met.

Description

Technical Field

[0001] The utility model belongs to the field of mine drilling tools, and in particular relates to a mechanical-hydraulic combined drilling jar. Background Art

[0002] Existing drilling jars have three main structures: mechanical, hydraulic, and mechanical-hydraulic. These existing jars have the following problems: they cannot accommodate mechanical, hydraulic, or mechanical-hydraulic structures within a single jar to meet diverse application requirements. Utility Model Content

[0003] In order to solve the above problems, the present invention adopts the following technical solutions:

[0004] Mechanical and hydraulic combined drilling jar, including:

[0005] Outer cylinder assembly;

[0006] an inner barrel assembly; a first end of the inner barrel assembly being located outside the first end of the outer barrel assembly and connected to the upper drilling tool, a second end of the inner barrel assembly at least partially extending into the interior of the outer barrel assembly, and a second end of the outer barrel assembly being connected to the lower drilling tool;

[0007] an upper hydraulic vibration mechanism and a lower hydraulic vibration mechanism;

[0008] Mechanical vibration mechanism;

[0009] Among them, the upper hydraulic vibration mechanism is arranged between the outer cylinder assembly and the inner cylinder assembly, located at the upper part of the jar, and generates upward vibration through hydraulic pressure. The lower hydraulic vibration mechanism is arranged between the outer cylinder assembly and the inner cylinder assembly, located at the upper part of the jar, and located on one side of the upper hydraulic vibration mechanism, and generates downward vibration through hydraulic pressure. The mechanical vibration mechanism is arranged between the outer cylinder assembly and the inner cylinder assembly, located at the lower part of the jar, and generates upward or downward vibration through mechanical means.

[0010] Furthermore, the outer cylinder assembly includes a centralizing outer cylinder, a spline outer cylinder, a shock outer cylinder, a hydraulic outer cylinder, a slip outer cylinder, a piston outer cylinder and a lower joint connected in sequence, the lower joint is connected to the lower drilling tool, and the inner ring of the centralizing outer cylinder is equipped with a centralizing outer cylinder seal;

[0011] The inner barrel assembly includes: a spline spindle, a hydraulic spindle, a slip spindle and an extended spindle connected in sequence;

[0012] The first end of the spline mandrel is located outside the straightening outer cylinder and is connected to the upper drilling tool. The second end passes through the straightening outer cylinder and the spline outer cylinder in sequence and extends to the second end of the shock outer cylinder. The second end of the hydraulic mandrel extends to the second end of the hydraulic outer cylinder, the slip mandrel extends to the second end of the slip outer cylinder, and the extended mandrel extends to the second end of the piston outer cylinder. A slip mandrel seal is provided on the outer periphery of the slip mandrel.

[0013] Furthermore, the upper hydraulic vibration mechanism includes:

[0014] an upper throttle valve, the upper throttle valve being mounted on the second end of the hydraulic spindle, the upper throttle valve having upper throttle holes running through both ends;

[0015] The upper hydraulic main channel is formed by the spline outer cylinder, the shock outer cylinder, the hydraulic outer cylinder and the gap between the spline core shaft and the hydraulic core shaft.

[0016] Furthermore, the outer ring of the hydraulic spindle is provided with a first sealing surface, and the first sealing surface is used to block the main channel of the hydraulic oil of the upper throttle valve.

[0017] Furthermore, the lower hydraulic vibration mechanism includes:

[0018] a lower throttle valve, the lower throttle valve being mounted on the first end of the slip mandrel, the lower throttle valve having lower throttle holes running through both ends;

[0019] The lower hydraulic main channel is formed by the hydraulic outer cylinder, the gap between the slip outer cylinder and the slip mandrel.

[0020] Furthermore, a second sealing surface is provided on the slip spindle, and the second sealing surface is used to block the main channel of the hydraulic oil of the lower throttle valve.

[0021] Furthermore, the second end of the spline outer cylinder has a first boss for limiting the first end of the hydraulic spindle, the second end of the shock outer cylinder has a second boss for limiting the first end of the upper throttle valve, and the first end of the hydraulic outer cylinder has a third boss for limiting the second end of the upper throttle valve.

[0022] Furthermore, the second end of the hydraulic outer cylinder has a fourth boss for limiting the first end of the lower throttle valve, and the first end of the slip outer cylinder has a fifth boss for limiting the second end of the lower throttle valve.

[0023] Furthermore, the mechanical vibration mechanism includes a cava upper retaining ring, a four-petal cava, a cava lower retaining ring, a disc spring, an elastic adjustment sleeve, a floating piston and a fixing nut which are arranged in sequence, wherein the cava upper retaining ring, the four-petal cava, the cava lower retaining ring, the disc spring and the elastic adjustment sleeve are all installed on the second end of the cava spindle; the floating piston and the fixing nut are installed on the second end of the extended spindle, the second end of the cava spindle is circumferentially provided with external teeth, the four-petal cava is provided with internal teeth cooperating with the external teeth, a floating piston seal is installed on the outer periphery of the floating piston, the interior of the cava outer tube is provided with a sixth boss for limiting the cava upper retaining ring, the first end of the piston outer tube is provided with a seventh boss for limiting the elastic adjustment sleeve, the interior of the piston outer tube is provided with an eighth boss for limiting the floating piston, and the first end of the lower joint is provided with a ninth boss for limiting the fixing nut.

[0024] Beneficial effects of the utility model:

[0025] When assembling the mechanical-hydraulic combined drilling jar of the utility model, a mechanical, hydraulic or mechanical-hydraulic structure can be selected as needed to meet different use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural diagram of the mechanical-hydraulic combined drilling jar of the present utility model.

[0027] In the figure: 1. Splined spindle; 2. Straightening outer cylinder; 3. Straightening outer cylinder seal; 4. Splined outer cylinder; 5. Shock outer cylinder; 6. Hydraulic spindle; 7. Upper throttle valve; 8. Hydraulic outer cylinder; 9. Slip spindle seal; 10. Slip spindle; 11. Lower throttle valve; 12. Slip outer cylinder; 13. Slip upper retaining ring; 14. Four-petal slip; 15. Slip lower retaining ring; 16. Disc spring; 17. Elastic adjustment sleeve; 18. Extension spindle; 19. Piston outer cylinder; 20. Floating piston; 21. Floating piston seal; 22. Fixing nut; 23. Lower joint. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] Example 1

[0030] refer to Figure 1 , mechanical and hydraulic combined drilling jar, including:

[0031] Outer cylinder assembly;

[0032] An inner barrel assembly; a first end of the inner barrel assembly is located outside the first end of the outer barrel assembly and is connected to the upper drilling tool, and a second end of the inner barrel assembly at least partially extends into the interior of the outer barrel assembly, and a second end of the outer barrel assembly is connected to the lower drilling tool;

[0033] an upper hydraulic vibration mechanism and a lower hydraulic vibration mechanism;

[0034] Mechanical vibration mechanism;

[0035] Among them, the upper hydraulic vibration mechanism is arranged between the outer cylinder assembly and the inner cylinder assembly, located at the upper part of the jar, and generates upward vibration through hydraulic pressure. The lower hydraulic vibration mechanism is arranged between the outer cylinder assembly and the inner cylinder assembly, located at the upper part of the jar, and located on one side of the upper hydraulic vibration mechanism, and generates downward vibration through hydraulic pressure. The mechanical vibration mechanism is arranged between the outer cylinder assembly and the inner cylinder assembly, located at the lower part of the jar, and generates upward or downward vibration through mechanical means.

[0036] In this embodiment, the outer cylinder assembly includes a centralizing outer cylinder 2, a spline outer cylinder 4, a shock outer cylinder 5, a hydraulic outer cylinder 8, a slip outer cylinder 12, a piston outer cylinder 19, and a lower joint 23, which are connected in sequence. The lower joint 23 is connected to the lower drilling tool. The inner ring of the centralizing outer cylinder 2 is installed with a centralizing outer cylinder seal 3.

[0037] The inner barrel assembly includes: a spline spindle 1, a hydraulic spindle 6, a slip spindle 10, and an extended spindle 18 connected in sequence;

[0038] The first end of the splined mandrel 1 is located on the outside of the straightening outer cylinder 2 and is connected to the upper drilling tool. The second end passes through the straightening outer cylinder 2 and the splined outer cylinder 4 in sequence and extends to the second end of the shock outer cylinder 5. The second end of the hydraulic mandrel 6 extends to the second end of the hydraulic outer cylinder 8. The slip mandrel 10 extends to the second end of the slip outer cylinder 12. The extended mandrel 18 extends to the second end of the piston outer cylinder 19. A slip mandrel seal 9 is provided on the outer periphery of the slip mandrel 10.

[0039] In this embodiment, the upper hydraulic vibration mechanism includes:

[0040] The upper throttle valve 7 is mounted on the second end of the hydraulic spindle 6 and has upper throttle holes running through both ends;

[0041] The upper hydraulic main channel is composed of the gaps between the spline outer cylinder 4, the shock outer cylinder 5, the hydraulic outer cylinder 8 and the spline core shaft 1 and the hydraulic core shaft 6.

[0042] In this embodiment, the outer ring of the hydraulic spindle 6 is provided with a first sealing surface, and the first sealing surface is used to block the main channel of the hydraulic oil of the upper throttle valve 7.

[0043] In this embodiment, the lower hydraulic vibration mechanism includes:

[0044] The lower throttle valve 11 is mounted on the first end of the slip mandrel 10 and has lower throttle holes running through both ends;

[0045] The lower hydraulic main channel is composed of the gap between the hydraulic outer cylinder 8, the slip outer cylinder 12 and the slip mandrel 10.

[0046] In this embodiment, a second sealing surface is provided on the slip mandrel 10 , and the second sealing surface is used to block the main channel of the hydraulic oil of the lower throttle valve 11 .

[0047] In this embodiment, the second end of the spline outer cylinder 4 has a first boss for limiting the first end of the hydraulic spindle 6, the second end of the shock outer cylinder 5 has a second boss for limiting the first end of the upper throttle valve 7, and the first end of the hydraulic outer cylinder 8 has a third boss for limiting the second end of the upper throttle valve 7.

[0048] In this embodiment, the second end of the hydraulic outer cylinder 8 has a fourth boss for limiting the first end of the lower throttle valve 11, and the first end of the slip outer cylinder 12 has a fifth boss for limiting the second end of the lower throttle valve 11.

[0049] In this embodiment, the mechanical vibration mechanism includes a slip upper retaining ring 13, a four-petal slip 14, a slip lower retaining ring 15, a disc spring 16, an elastic force adjustment sleeve 17, a floating piston 20 and a fixing nut 22, which are arranged in sequence. Among them, the slip upper retaining ring 13, the four-petal slip 14, the slip lower retaining ring 15, the disc spring 16 and the elastic force adjustment sleeve 17 are all installed at the second end of the slip mandrel 10; the floating piston 20 and the fixing nut 22 are installed at the second end of the extended mandrel 18, and the second end of the slip mandrel 10 is circumferentially provided with External teeth, the four-petal cava 14 is provided with internal teeth arranged in coordination with the external teeth, a floating piston seal 21 is installed on the outer periphery of the floating piston 20, the interior of the cava outer tube 12 has a sixth boss for limiting the cava upper retaining ring 13, the first end of the piston outer tube 19 has a seventh boss for limiting the elastic adjustment sleeve 17, the interior of the piston outer tube 19 has an eighth boss for limiting the floating piston 20, and the first end of the lower joint 23 has a ninth boss for limiting the fixing nut 22.

[0050] Example 2

[0051] This embodiment is the first combination in Embodiment 1, in which neither the upper throttle valve nor the lower throttle valve is installed, and only the mechanical shock mechanism is installed.

[0052] Working process:

[0053] When the lower drill tool connected to the lower connector 23 is stuck, the upper drill tool connected to the splined mandrel 1 is lifted or lowered, and the inner teeth of the four-petal slip 14 engage with the outer teeth of the slip mandrel 10. The disc spring 16 tightens the four-petal slip 14, the upper slip retaining ring 13 and the lower slip retaining ring 15. The slip mandrel 10 cannot move upward or downward, and the jar is in a locked state. Use appropriate pulling force to lift the upper drill tool connected to the splined mandrel 1. The slip mandrel 10 moves upward, compressing the disc spring 16. The four-petal slip 14 opens radially, the upper slip retaining ring 13 and the lower slip retaining ring 15 open axially, and the inner teeth of the four-petal slip 14 disengage from the outer teeth of the slip mandrel 10. The slip mandrel 10 can move upward, and the jar is in an unlocked state, producing an upward jarring. Use appropriate pulling force to press down the upper drilling tool connected to the spline spindle 1, the slip spindle 10 runs downward, compresses the disc spring 16, the four-petal slip 14 opens radially, the slip upper retaining ring 13 and the slip lower retaining ring 15 open axially, the inner teeth of the four-petal slip 14 disengage from the outer teeth of the slip spindle 10, the slip spindle 10 can move downward, the jar is in the unlocked state, and produces a downward jarring.

[0054] Example 3

[0055] This embodiment is the second combination in Embodiment 1, in which the mechanical shock mechanism is not installed, and only the upper throttle valve and the lower throttle valve are installed.

[0056] Working process:

[0057] When the lower drill string connected to the jar's lower connector 23 becomes stuck, the upper drill string connected to the splined mandrel 1 is lowered, completely closing the jar in the lower position. The upper drill string connected to the splined mandrel 1 is then pulled upward with a certain tension. The sealing surface of the hydraulic mandrel 6 enters the inner bore of the upper throttle valve 7, blocking the main hydraulic oil passage. The hydraulic oil flows through the small orifice of the upper throttle valve 7, storing energy through throttling. When the sealing surface of the hydraulic mandrel 6 completely passes through the inner bore of the upper throttle valve 7, the resistance is released, and the elastic potential energy stored in the upper drill string is converted into upward kinetic energy, producing an upward jarring.

[0058] When the lower drill string connected to the jar's lower connector 23 becomes stuck, the upper drill string connected to the splined mandrel 1 is lifted, completely closing the jar in the upper position. The upper drill string connected to the splined mandrel 1 is then lowered under a certain pressure. The sealing surface of the slip mandrel 10 enters the inner bore of the lower throttle valve 11, blocking the main hydraulic oil passage. The hydraulic oil flows through the small orifice of the lower throttle valve 11, storing energy through throttling. When the sealing surface of the slip mandrel 10 completely passes through the inner bore of the lower throttle valve 11, the resistance is released, and the elastic potential energy stored in the upper drill string is converted into downward kinetic energy, generating a downward jarring.

[0059] Example 4

[0060] This embodiment is the third combination of embodiment 1: only the throttle valve is installed, and the mechanical shock mechanism is also installed; working process:

[0061] When the lower drill tool connected to the lower joint 23 of the jar is stuck, the upper drill tool connected to the spline spindle 1 is lifted or lowered, and the inner teeth of the four-petal cava 14 engage with the outer teeth of the cava spindle 10, and the jar is in a locked state. Use appropriate pulling force to lift the upper drill tool connected to the spline spindle 1, the cava spindle 10 can move upward, and the jar is in an unlocked state. Continue to lift the upper drill tool connected to the spline spindle 1, the sealing surface of the hydraulic spindle 6 enters the inner hole of the upper throttle valve 7 and blocks the main channel of the hydraulic oil. The hydraulic oil flows through the small hole of the upper throttle valve 7, and energy storage is formed by throttling. When the sealing surface of the hydraulic spindle 6 completely passes through the inner hole of the upper throttle valve 7, the resistance state is released, and the elastic potential energy stored in the upper drill tool is converted into upward kinetic energy, generating an upward shock.

[0062] When the lower drill tool connected to the lower joint 23 of the jar is stuck, the upper drill tool connected to the spline spindle 1 is pressed down with appropriate pressure, the slip spindle 10 moves downward, the disc spring 16 is compressed, the four-petal slip 14 opens radially, the slip upper retaining ring 13 and the slip lower retaining ring 15 open axially, the inner teeth of the four-petal slip 14 disengage from the outer teeth of the slip spindle 10, the slip spindle 10 can move downward, the jar is in the unlocked state, and a downward shock is generated.

[0063] Example 5

[0064] This embodiment is the fourth combination of embodiment 1: only the lower throttle valve is installed, and the mechanical shock mechanism is also installed. Working process:

[0065] When the lower drill tool connected to the lower connector 23 of the jar is stuck, the upper drill tool connected to the splined mandrel 1 is lifted or lowered, and the inner teeth of the four-petal slip 14 engage with the outer teeth of the slip mandrel 10. The disc spring 16 tightens the four-petal slip 14, the upper slip retaining ring 13 and the lower slip retaining ring 15. The slip mandrel 10 cannot move upward or downward, and the jar is in a locked state. Use appropriate pulling force to lift the upper drill tool connected to the splined mandrel 1. The slip mandrel 10 moves upward, compressing the disc spring 16. The four-petal slip 14 opens radially, the upper slip retaining ring 13 and the lower slip retaining ring 15 open axially, and the inner teeth of the four-petal slip 14 disengage from the outer teeth of the slip mandrel 10. The slip mandrel 10 can move upward, and the jar is in an unlocked state, producing an upward jar.

[0066] When the lower drill string connected to the jar's lower connector 23 becomes stuck, appropriate pressure is applied to the upper drill string connected to the splined mandrel 1, causing the slip mandrel 10 to move downward and the jar to enter the unlocked state. Further pressure is applied to the upper drill string connected to the splined mandrel 1, causing the sealing surface of the slip mandrel 10 to enter the inner bore of the lower throttle valve 11 and block the main hydraulic oil passage. The hydraulic oil flows through the small orifice of the lower throttle valve 11, storing energy through throttling. When the sealing surface of the slip mandrel 10 completely passes through the inner bore of the lower throttle valve 11, the resistance is released, and the elastic potential energy stored in the upper drill string is converted into downward kinetic energy, producing a downward jarring.

[0067] The four combinations of mechanical-hydraulic combined drilling jars have different performances and can meet different usage requirements.

[0068] The design concept of the utility model can be extended to any type of mechanical-hydraulic combined drilling jar and has equivalent uses on any type of mechanical-hydraulic combined drilling jar.

[0069] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to fall within the scope of protection of the present invention.

Claims

1. Mechanical and hydraulic combined drilling jar, characterized in that: include: Outer cylinder assembly; Inner barrel assembly; The first end of the inner barrel assembly is located outside the first end of the outer barrel assembly and is connected to the upper drilling tool, and the second end at least partially extends into the interior of the outer barrel assembly, and the second end of the outer barrel assembly is connected to the lower drilling tool; an upper hydraulic vibration mechanism and a lower hydraulic vibration mechanism; Mechanical vibration mechanism; Among them, the upper hydraulic vibration mechanism is arranged between the outer cylinder assembly and the inner cylinder assembly, located at the upper part of the jar, and generates upward vibration through hydraulic pressure. The lower hydraulic vibration mechanism is arranged between the outer cylinder assembly and the inner cylinder assembly, located at the upper part of the jar, and located on one side of the upper hydraulic vibration mechanism, and generates downward vibration through hydraulic pressure. The mechanical vibration mechanism is arranged between the outer cylinder assembly and the inner cylinder assembly, located at the lower part of the jar, and generates upward or downward vibration through mechanical means.

2. The mechanical-hydraulic combined drilling jar according to claim 1, characterized in that: The outer cylinder assembly includes a centralizing outer cylinder, a spline outer cylinder, a shock outer cylinder, a hydraulic outer cylinder, a slip outer cylinder, a piston outer cylinder and a lower joint connected in sequence. The lower joint is connected to the lower drilling tool. The inner ring of the centralizing outer cylinder is equipped with a centralizing outer cylinder seal. The inner barrel assembly includes: a spline spindle, a hydraulic spindle, a slip spindle and an extended spindle connected in sequence; The first end of the spline mandrel is located outside the straightening outer cylinder and is connected to the upper drilling tool. The second end passes through the straightening outer cylinder and the spline outer cylinder in sequence and extends to the second end of the shock outer cylinder. The second end of the hydraulic mandrel extends to the second end of the hydraulic outer cylinder, the slip mandrel extends to the second end of the slip outer cylinder, and the extended mandrel extends to the second end of the piston outer cylinder. A slip mandrel seal is provided on the outer periphery of the slip mandrel.

3. The mechanical-hydraulic combined drilling jar according to claim 2, characterized in that: The upper hydraulic vibration mechanism comprises: an upper throttle valve, the upper throttle valve being mounted on the second end of the hydraulic spindle, the upper throttle valve having upper throttle holes running through both ends; The upper hydraulic main channel is formed by the spline outer cylinder, the shock outer cylinder, the hydraulic outer cylinder and the gap between the spline core shaft and the hydraulic core shaft.

4. The mechanical-hydraulic combined drilling jar according to claim 3, characterized in that: The outer ring of the hydraulic spindle is provided with a first sealing surface, and the first sealing surface is used to block the main channel of the hydraulic oil of the upper throttle valve.

5. The mechanical-hydraulic combined drilling jar according to claim 2, characterized in that: The lower hydraulic vibration mechanism includes: a lower throttle valve, the lower throttle valve being mounted on the first end of the slip mandrel, the lower throttle valve having lower throttle holes running through both ends; The lower hydraulic main channel is formed by the hydraulic outer cylinder, the gap between the slip outer cylinder and the slip mandrel.

6. The mechanical-hydraulic combined drilling jar according to claim 5, characterized in that: A second sealing surface is provided on the slip spindle, and the second sealing surface is used to block the main channel of the hydraulic oil of the lower throttle valve.

7. The mechanical-hydraulic combined drilling jar according to claim 3, characterized in that: The second end of the spline outer cylinder has a first boss for limiting the first end of the hydraulic spindle, the second end of the shock outer cylinder has a second boss for limiting the first end of the upper throttle valve, and the first end of the hydraulic outer cylinder has a third boss for limiting the second end of the upper throttle valve.

8. The mechanical-hydraulic combined drilling jar according to claim 5, characterized in that: The second end of the hydraulic outer cylinder has a fourth boss for limiting the first end of the lower throttle valve, and the first end of the slip outer cylinder has a fifth boss for limiting the second end of the lower throttle valve.

9. The mechanical-hydraulic combined drilling jar according to claim 2, characterized in that: The mechanical vibration mechanism includes a cava upper retaining ring, a four-petal cava, a cava lower retaining ring, a disc spring, an elastic adjustment sleeve, a floating piston and a fixing nut which are arranged in sequence, wherein the cava upper retaining ring, the four-petal cava, the cava lower retaining ring, the disc spring and the elastic adjustment sleeve are all installed on the second end of the cava spindle; the floating piston and the fixing nut are installed on the second end of the extended spindle, the second end of the cava spindle is circumferentially provided with external teeth, the four-petal cava is provided with internal teeth matched with the external teeth, a floating piston seal is installed on the outer circumference of the floating piston, the interior of the cava outer cylinder has a sixth boss for limiting the cava upper retaining ring, the first end of the piston outer cylinder has a seventh boss for limiting the elastic adjustment sleeve, the interior of the piston outer cylinder has an eighth boss for limiting the floating piston, and the first end of the lower joint has a ninth boss for limiting the fixing nut.

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