High-sealing-performance two-way jar

Abstract

The invention provides a high-sealing-performance two-way jar, and relates to the technical field of jars. The high-sealing-performance two-way jar comprises an outer mounting shell, two built-in fixing round blocks are fixedly connected to the middle of the interior of the outer mounting shell, and driving piston rod bodies are arranged on the opposite sides of the two built-in fixing round blocks. Hydraulic oil enters the first connecting pipe body through the fourth connecting pipe body and then enters the second connecting pipe body, when one valve is selected to be opened, the hydraulic oil enters the corresponding space through the third connecting pipe body, oil pressure drives a piston rod body to move, the piston rod body is driven to drive a jarring assembly to move, and the jarring assembly is driven to move. The jarring mounting head is moved for knocking; and when the two valves are selected to be opened at the same time, hydraulic oil enters the two spaces through the two third connecting pipe bodies, so that the two jarring mounting heads can knock at the same time, and the hydraulic jarring device is suitable for different conditions.

Description

Technical Field

[0001] The invention relates to the technical field of jars, in particular to a high-sealing bidirectional jar. Background Art

[0002] In drilling operations, drill bits often get stuck due to complex geological structures (such as well wall collapse, plastic flow and extrusion of formations in open holes) and improper technical measures (such as prolonged pump shutdown, mud packing on the drill bit, etc.). The jar is one of the effective tools to resolve drill sticking accidents.

[0003] When a traditional two-way jar is working, the jar head is often unable to switch the working state according to the actual situation, resulting in a single jarring operation mode of the two-way jar, which cannot meet the use in more situations. In addition, the sealing of the traditional two-way jar is not ideal and lacks effective sealing means. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the present invention provides a highly sealed bidirectional jar, which solves the problem that the jarring head is often unable to switch the working state according to actual conditions, resulting in a single jarring operation mode of the bidirectional jar and being unable to meet the use in more situations. In addition, the traditional bidirectional jar has unsatisfactory sealing performance and lacks effective sealing means.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a highly sealing bidirectional jar, comprising an outer mounting shell, two built-in fixed round blocks are fixedly connected to the inner middle position of the outer mounting shell, a driving piston rod body is provided on the opposite sides of the two built-in fixed round blocks, the driving piston rod body is movably arranged inside the outer mounting shell, a sealing assembly is provided on the outer surface of the driving piston rod body, one end of the driving piston rod body is fixedly connected to a rubber pad, the other end of the driving piston rod body is connected to a jarring assembly, a first connecting tube body is fixedly connected at the center of the outer surface of the outer mounting shell, one end of the first connecting tube body extends to the interior of the outer mounting shell and is connected to an oil supply assembly, the other end of the first connecting tube body is rotatably connected to a fourth connecting tube body, the end of the fourth connecting tube body away from the first connecting tube body is fixedly connected to a quick connector, and a positioning assembly is connected between the first connecting tube body and the fourth connecting tube body.

[0008] Preferably, the driving piston rod body is composed of a primary piston body, a secondary piston body and a tertiary piston body, the primary piston body and the tertiary piston body are respectively connected to the two ends of the secondary piston body, the rubber pad is fixedly connected to one end of the primary piston body, and the shock assembly is fixedly connected to one end of the tertiary piston body.

[0009] Preferably, the sealing assembly includes a first built-in sealing ring, a second built-in sealing ring and a third built-in sealing ring, and the first built-in sealing ring, the second built-in sealing ring and the third built-in sealing ring are all embedded in the outer surface of the driving piston rod body, and the first built-in sealing ring, the second built-in sealing ring and the third built-in sealing ring are all in contact with the inner wall of the external mounting shell.

[0010] Preferably, the first built-in sealing ring is embedded in the outer surface of the first-stage piston body, the second built-in sealing ring is embedded in the outer surface of the second-stage piston body, and the third built-in sealing ring is embedded in the outer surface of the tertiary piston body.

[0011] Preferably, two connection trigger springs are fixedly connected to one side of the first-stage piston body, and the other end of the connection trigger spring is fixedly connected to the inner wall of the outer mounting shell.

[0012] Preferably, the shock assembly includes a conical connector fixedly connected to one end of a driving piston rod body, the end of the conical connector away from the driving piston rod body is fixedly connected to a connecting threaded short rod, the outer surface of the connecting threaded short rod is threadedly connected to a shock mounting head, and a threaded groove matching the connecting threaded short rod is provided on the side of the shock mounting head close to the conical connector.

[0013] Preferably, the oil supply assembly includes a second connecting tube body fixedly connected to one end of the first connecting tube body, the second connecting tube body is located inside the outer mounting shell, the outer surface of the second connecting tube body is fixedly connected to two symmetrically arranged third connecting tube bodies, the outer surface of the third connecting tube body is provided with a valve, and one end of the third connecting tube body away from the second connecting tube body passes through the corresponding built-in fixed round block and is fixedly connected to it.

[0014] Preferably, the positioning assembly includes a first connecting disc and a second connecting disc, the first connecting disc is fixedly connected to the outer surface of the first connecting tube body, the second connecting disc is fixedly connected to the outer surface of the fourth connecting tube body, and the first connecting disc and the second connecting disc are threadedly connected through multiple locking rods.

[0015] (III) Beneficial effects

[0016] The present invention provides a high-sealing bidirectional jar having the following beneficial effects:

[0017] 1. In the present invention, the hydraulic oil enters the first connecting pipe body through the fourth connecting pipe body, and then enters the second connecting pipe body. When one of the valves is selected to be opened, the hydraulic oil enters the corresponding space through the third connecting pipe body, and the oil pressure causes the driving piston rod body to move, and the driving piston rod body moves with the shock assembly, so that the shock mounting head moves for knocking; when two valves are selected to be opened at the same time, the hydraulic oil enters the two spaces through the two third connecting pipe bodies, so that the two shock mounting heads can knock at the same time, which is suitable for different situations.

[0018] 2. According to the present invention, multiple locking rods can be unscrewed, and the first connecting disc and the second connecting disc can be used to make the first connecting tube body and the fourth connecting tube body rotate relative to each other, so that the positions of the two shock mounting heads can be interchanged, allowing the other shock mounting head to continue working. Since the conical connector and the shock mounting head are threadedly connected, the shock mounting head can be disassembled and replaced easily, thereby reducing the maintenance cost of the equipment.

[0019] 3. The present invention is used to achieve a three-level sealing effect by providing a first built-in sealing ring, a second built-in sealing ring and a third built-in sealing ring, thereby ensuring good sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the three-dimensional structure of a high-sealing bidirectional jar provided by the present invention from a first-view perspective;

[0021] Figure 2 A schematic diagram of the stereoscopic structure of a high-sealing bidirectional jar provided by the present invention from a second viewing angle;

[0022] Figure 3 A cross-sectional view of a high-sealing bidirectional jar provided by the present invention;

[0023] Figure 4 A schematic diagram of the structure of a driving piston rod body of a high-sealing bidirectional jar provided by the present invention;

[0024] Figure 5 A schematic diagram of the structure of a jar mounting head of a high-sealing bidirectional jar provided by the present invention;

[0025] Figure 6 A high-sealing bidirectional jar provided by the present invention Figure 3 -A is a schematic diagram of a partially enlarged structure;

[0026] Figure 7 A high-sealing bidirectional jar provided by the present invention Figure 3 -Schematic diagram of the partially enlarged structure of B.

[0027] Among them, 1. external mounting shell; 2. internal fixed round block; 3. driving piston rod body; 4. conical connector; 5. shock mounting head; 6. connecting threaded short rod; 7. first internal sealing ring; 8. second internal sealing ring; 9. third internal sealing ring; 10. connecting trigger spring; 11. first connecting tube body; 12. second connecting tube body; 13. third connecting tube body; 14. fourth connecting tube body; 15. quick connector; 16. first connecting disc; 17. second connecting disc; 31. first-stage piston body; 32. second-stage piston body; 33. third-stage piston body. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Example:

[0030] like Figure 1-7 As shown, the embodiment of the present invention provides a high-sealing bidirectional jar, comprising an outer mounting shell 1, two internal fixed round blocks 2 are fixedly connected to the middle position of the inner portion of the outer mounting shell 1, and a driving piston rod body 3 is arranged on the opposite sides of the two internal fixed round blocks 2, and the driving piston rod body 3 is movably arranged inside the outer mounting shell 1, and the driving piston rod body 3 is composed of a primary piston body 31, a secondary piston body 32 and a tertiary piston body 33, and the primary piston body 31 and the tertiary piston body 33 are respectively connected to the two ends of the secondary piston body 32, and one end of the driving piston rod body 3 is fixedly connected to a rubber pad, and the rubber pad is fixedly connected to one end of the primary piston body 31, and the jar assembly is fixedly connected to one end of the tertiary piston body 33;

[0031] A sealing assembly is provided on the outer surface of the driving piston rod body 3, and the sealing assembly includes a first built-in sealing ring 7, a second built-in sealing ring 8 and a third built-in sealing ring 9. The first built-in sealing ring 7, the second built-in sealing ring 8 and the third built-in sealing ring 9 are all embedded in the outer surface of the driving piston rod body 3, and the first built-in sealing ring 7, the second built-in sealing ring 8 and the third built-in sealing ring 9 are all in contact with the inner wall of the outer mounting shell 1. The first built-in sealing ring 7 is embedded in the outer surface of the first-stage piston body 31, the second built-in sealing ring 8 is embedded in the outer surface of the second-stage piston body 32, and the third built-in sealing ring 9 is embedded in the outer surface of the third-stage piston body 33. The first built-in sealing ring 7, the second built-in sealing ring 8 and the third built-in sealing ring 9 are provided to achieve a three-stage sealing effect, thereby ensuring good sealing performance. Two connecting trigger springs 10 are fixedly connected to one side of the first-stage piston body 31, and the other end of the connecting trigger spring 10 is fixedly connected to the inner wall of the outer mounting shell 1. The two connecting trigger springs 10 are provided to enable the driving piston rod body 3 to be reset;

[0032] The other end of the driving piston rod body 3 is connected to a shock assembly, which includes a conical connector 4 fixedly connected to one end of the driving piston rod body 3, and the end of the conical connector 4 away from the driving piston rod body 3 is fixedly connected to a connecting threaded short rod 6, and the outer surface of the connecting threaded short rod 6 is threadedly connected to a shock mounting head 5, and a thread groove adapted to the connecting threaded short rod 6 is provided on the side of the shock mounting head 5 close to the conical connector 4. Since the conical connector 4 and the shock mounting head 5 are threadedly connected, the shock mounting head 5 can be disassembled, which is convenient for replacement, reducing the maintenance cost of the equipment;

[0033] A first connecting pipe body 11 is fixedly connected at the center of the outer surface of the outer mounting shell 1, one end of the first connecting pipe body 11 extends to the inside of the outer mounting shell 1 and is connected to an oil supply assembly, the oil supply assembly includes a second connecting pipe body 12 fixedly connected to one end of the first connecting pipe body 11, the second connecting pipe body 12 is located inside the outer mounting shell 1, the outer surface of the second connecting pipe body 12 is fixedly connected to two symmetrically arranged third connecting pipe bodies 13, the outer surface of the third connecting pipe body 13 is provided with a valve, the end of the third connecting pipe body 13 away from the second connecting pipe body 12 passes through the corresponding built-in fixed round block 2 and is fixedly connected thereto, the quick connector 1 5 is connected to an external oil pump station, and oil is supplied to the fourth connecting pipe body 14 through the oil pump station. The hydraulic oil enters the first connecting pipe body 11 through the fourth connecting pipe body 14, and then enters the second connecting pipe body 12. When one of the valves is selected to be opened, the hydraulic oil enters the corresponding space through the third connecting pipe body 13, and the oil pressure drives the piston rod body 3 to move, and the driving piston rod body 3 moves with the shock assembly, so that the shock mounting head 5 moves to knock; when two valves are selected to be opened at the same time, the hydraulic oil enters the two spaces through the two third connecting pipe bodies 13, so that the two shock mounting heads 5 can knock at the same time;

[0034] The other end of the first connecting tube body 11 is rotatably connected to the fourth connecting tube body 14, and the end of the fourth connecting tube body 14 away from the first connecting tube body 11 is fixedly connected to a quick connector 15, and a positioning assembly is connected between the first connecting tube body 11 and the fourth connecting tube body 14, and the positioning assembly includes a first connecting disc 16 and a second connecting disc 17, the first connecting disc 16 is fixedly connected to the outer surface of the first connecting tube body 11, and the second connecting disc 17 is fixedly connected to the outer surface of the fourth connecting tube body 14, and the first connecting disc 16 and the second connecting disc 17 are threadedly connected by multiple locking rods, and the multiple locking rods can be unscrewed, and the first connecting tube body 11 and the fourth connecting tube body 14 are allowed to rotate relative to each other through the first connecting disc 16 and the second connecting disc 17, so that the positions of the two shock mounting heads 5 can be interchanged.

[0035] Working principle:

[0036] When in use, the quick connector 15 is connected to the external oil pump station, and oil is supplied to the fourth connecting pipe body 14 through the oil pump station. The hydraulic oil enters the first connecting pipe body 11 through the fourth connecting pipe body 14, and then enters the second connecting pipe body 12. When one of the valves is selected to be opened, the hydraulic oil enters the corresponding space through the third connecting pipe body 13, and the oil pressure drives the piston rod body 3 to move, and the driving piston rod body 3 moves with the shock assembly, so that the shock mounting head 5 moves for knocking; when two valves are selected to be opened at the same time, the hydraulic oil enters the two spaces through the two third connecting pipe bodies 13, so that the two shock mounting heads 5 can knock at the same time, which is suitable for different situations;

[0037] When one of the shock mounting heads 5 malfunctions, multiple locking rods can be unscrewed, and the first connecting disc 16 and the second connecting disc 17 can be used to make the first connecting tube body 11 and the fourth connecting tube body 14 rotate relative to each other, so that the positions of the two shock mounting heads 5 can be interchanged, allowing the other shock mounting head 5 to continue working.

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

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

Claims

1. A highly sealed bidirectional jar, comprising an outer mounting housing (1), characterized in that: Two internal fixed round blocks (2) are fixedly connected to the middle position of the inner part of the outer mounting shell (1); a driving piston rod body (3) is arranged on the opposite sides of the two internal fixed round blocks (2); the driving piston rod body (3) is movably arranged inside the outer mounting shell (1); a sealing assembly is arranged on the outer surface of the driving piston rod body (3); one end of the driving piston rod body (3) is fixedly connected to a rubber pad; the other end of the driving piston rod body (3) is connected to a shock assembly; a first connecting pipe body (11) is fixedly connected to the center of the outer surface of the outer mounting shell (1); one end of the first connecting pipe body (11) extends into the inner part of the outer mounting shell (1) and is connected to an oil supply assembly; the other end of the first connecting pipe body (11) is rotatably connected to a fourth connecting pipe body (14); one end of the fourth connecting pipe body (14) away from the first connecting pipe body (11) is fixedly connected to a quick connector (15); a positioning assembly is connected between the first connecting pipe body (11) and the fourth connecting pipe body (14).

2. A high-sealing bidirectional jar according to claim 1, characterized in that: The driving piston rod body (3) is composed of a primary piston body (31), a secondary piston body (32) and a tertiary piston body (33); the primary piston body (31) and the tertiary piston body (33) are respectively connected to two ends of the secondary piston body (32); the rubber pad is fixedly connected to one end of the primary piston body (31); and the shock assembly is fixedly connected to one end of the tertiary piston body (33).

3. A high-sealing bidirectional jar according to claim 2, characterized in that: The sealing assembly comprises a first built-in sealing ring (7), a second built-in sealing ring (8) and a third built-in sealing ring (9); the first built-in sealing ring (7), the second built-in sealing ring (8) and the third built-in sealing ring (9) are all embedded in the outer surface of the driving piston rod body (3); the first built-in sealing ring (7), the second built-in sealing ring (8) and the third built-in sealing ring (9) are all in contact with the inner wall of the outer mounting shell (1).

4. A high-sealing bidirectional jar according to claim 3, characterized in that: The first built-in sealing ring (7) is embedded in the outer surface of the first-stage piston body (31), the second built-in sealing ring (8) is embedded in the outer surface of the second-stage piston body (32), and the third built-in sealing ring (9) is embedded in the outer surface of the third-stage piston body (33).

5. A high-sealing bidirectional jar according to claim 4, characterized in that: Two connection trigger springs (10) are fixedly connected to one side of the primary piston body (31), and the other end of the connection trigger spring (10) is fixedly connected to the inner wall of the outer mounting shell (1).

6. A high-sealing bidirectional jar according to claim 1, characterized in that: The shock assembly comprises a conical connector (4) fixedly connected to one end of a driving piston rod body (3); the end of the conical connector (4) away from the driving piston rod body (3) is fixedly connected to a connecting threaded short rod (6); the outer surface of the connecting threaded short rod (6) is threadedly connected to a shock mounting head (5); and a threaded groove matching the connecting threaded short rod (6) is provided on a side of the shock mounting head (5) close to the conical connector (4).

7. A high-sealing bidirectional jar according to claim 1, characterized in that: The oil supply assembly comprises a second connecting pipe body (12) fixedly connected to one end of the first connecting pipe body (11); the second connecting pipe body (12) is located inside the outer mounting shell (1); the outer surface of the second connecting pipe body (12) is fixedly connected to two symmetrically arranged third connecting pipe bodies (13); the outer surface of the third connecting pipe body (13) is provided with a valve; and one end of the third connecting pipe body (13) away from the second connecting pipe body (12) passes through a corresponding built-in fixed round block (2) and is fixedly connected thereto.

8. The high-sealing bidirectional jar according to claim 1, characterized in that: The positioning assembly comprises a first connecting disc (16) and a second connecting disc (17); the first connecting disc (16) is fixedly connected to the outer surface of the first connecting tube body (11); the second connecting disc (17) is fixedly connected to the outer surface of the fourth connecting tube body (14); the first connecting disc (16) and the second connecting disc (17) are threadedly connected via a plurality of locking rods.

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