Jarring device

Abstract

The utility model relates to a jar which comprises a mandrel, a centralizing sleeve is arranged on the right side of the mandrel, a spline housing assembly is arranged on the right side of the centralizing sleeve, an upper jar pad is arranged on the right side of the spline housing assembly, an anti-falling cap is arranged on the right side of the upper jar pad, a clamping spring is arranged on the right side of the anti-falling cap, and an extension shaft is arranged on the right side of the clamping spring. When the drilling tool is used underground, an operator only needs to lift or lower a drilling tool on the ground, torque or external adjustment is not needed, upward impact force or downward impact force can be released, the magnitude of the jarring force can be freely adjusted within the allowable range, and the drilling tool is reliable in performance, easy and convenient to operate and high in practicability. The device can be widely applied to various underground operations such as well drilling, coring, fishing and well repairing.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of jar, particularly relates to jar. BACKGROUND

[0002] The QY type hydraulic jar is a full hydraulic type releasing tool, the tool is integrated with upper and lower jars, the tool's delay is more stable and the performance is more reliable by adopting the flow limiting valve body structure, the QY type hydraulic jar's delay function can make the drill string fully stretch and store energy before jar releasing, so that the best jar effect is achieved, when the downhole drilling tool is stuck, the QY type hydraulic jar can provide a great impact force by the specific operation on the well, so that the releasing purpose is achieved, and normal drilling operation is rapidly restored. SUMMARY

[0003] The utility model discloses a jar, which aims to solve the problems mentioned in the background.

[0004] The utility model discloses a jar, which aims to solve the problems mentioned in the background.

[0005] In one embodiment, the lower jar pad right side is equipped with the upper adjusting cylinder, the upper adjusting cylinder right side is equipped with the upper adjusting body, the upper adjusting body right side is equipped with the bushing, and the bushing right side is equipped with the cylinder sleeve.

[0006] In one embodiment, the cylinder sleeve right side is equipped with the slip sleeve, the slip sleeve right side is equipped with the slip, and the slip right side is equipped with the interval sleeve.

[0007] In one embodiment, the interval sleeve right side is equipped with the elastic sleeve, the elastic sleeve right side is equipped with the fixed hole plug pin close to the top, the fixed hole plug pin right side is equipped with the adjusting hole plug pin, and the fixed hole plug pin and the adjusting hole plug pin bottom are equipped with the lower adjusting body.

[0008] In one embodiment, the lower adjusting body right side is equipped with the oil plug, the oil plug right side is equipped with the lower adjusting cylinder, the lower adjusting cylinder right side is equipped with the float assembly, and the float assembly right side is equipped with the lower joint.

[0009] The utility model provides the beneficial effect is:

[0010] The utility model discloses a tool is used to the percussion drilling of the downhole operation, and the operator only needs to lift or drop the drilling tool on the ground when using in the downhole, does not need to adjust the torque or outside, can release the percussion force of the upper blow or the lower blow, and the size of the percussion force can be freely adjusted within the allowable range, and the tool performance is reliable, simple and convenient to operate, and can be widely applied to the downhole operation such as drilling, coring, fishing and workover. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the front view of the utility model;

[0012] Figure 2 It is Figure 1 The enlarged view of A in the middle;

[0013] Figure 3 It is Figure 1 The enlarged view of B in the middle;

[0014] Figure 4 It is Figure 1 The enlarged view of C in the middle;

[0015] Figure 5 It is Figure 1 The enlarged view of D in the middle;

[0016] Figure 6 It is Figure 1 The enlarged view of E in the middle;

[0017] Figure 7 It is Figure 1 The enlarged view of F in the middle.

[0018] In the drawings, 1, mandrel; 2, centralizing sleeve; 3, spline sleeve assembly; 4, upper jar pad; 5, anti-drop cap; 6, clamping spring; 7, extension shaft; 8, lower jar pad; 9, upper adjusting cylinder; 10, upper adjusting body; 11, cylinder sleeve; 12, bush; 13, slip sleeve; 14, elastic sleeve; 15, spacer sleeve; 16, slip; 17, lower adjusting body; 18, lower adjusting cylinder; 19, float assembly; 20, lower joint; 21, oil plug; 22, adjusting hole plug pin; 23, fixed hole plug pin. DETAILED DESCRIPTION

[0019] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict. The technical scheme of the utility model will be further described below in combination with the drawings of the embodiments of the utility model, and the utility model is not limited to the following specific embodiments.

[0020] It should be understood that the same or similar reference numerals in the drawings of the embodiments correspond to the same or similar parts. In the description of the present application, it should be understood that if the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom" and the like indicate the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary description, and cannot be understood as a limitation on the present patent. For those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0021] In one embodiment, as shown in Figures 1-7 The shock sub, including the mandrel 1, the right side of the mandrel 1 is provided with the centralizing sleeve 2, the right side of the centralizing sleeve 2 is provided with the spline sleeve assembly 3, the right side of the spline sleeve assembly 3 is provided with the upper shock pad 4, the right side of the upper shock pad 4 is provided with the anti-drop cap 5, the right side of the anti-drop cap 5 is provided with the snap spring 6, the right side of the snap spring 6 is provided with the extension shaft 7, the right side of the extension shaft 7 is provided with the lower shock pad 8, the right side of the lower shock pad 8 is provided with the upper adjusting cylinder 9, the right side of the upper adjusting cylinder 9 is provided with the upper adjusting body 10, the right side of the upper adjusting body 10 is provided with the bushing 12, the right side of the bushing 12 is provided with the cylinder sleeve 11, the right side of the cylinder sleeve 11 is provided with the slip sleeve 13, the right side of the slip sleeve 13 is provided with the slip 16, the right side of the slip 16 is provided with the spacer sleeve 15, the right side of the spacer sleeve 15 is provided with the elastic sleeve 14, the right side of the elastic sleeve 14 is provided with the fixed hole plug pin 23 near the top, the right side of the fixed hole plug pin 23 is provided with the adjusting hole plug pin 22, the bottom of the fixed hole plug pin 23 and the adjusting hole plug pin 22 is provided with the lower adjusting body 17, the right side of the lower adjusting body 17 is provided with the oil plug 21, the right side of the oil plug 21 is provided with the lower adjusting cylinder 18, the right side of the lower adjusting cylinder 18 is provided with the float assembly 19, the right side of the float assembly 19 is provided with the lower connector 20.

[0022] Working principle: when used in the well, the operator only needs to lift or lower the drilling tool on the ground, without the need for torque or external adjustment, to release the upper or lower impact force, and the size of the shock force can be freely adjusted within the allowable range, the tool performance is reliable, the operation is simple and convenient, and it can be widely applied to drilling, coring, fishing and well repair and other downhole operations.

[0023] The technical features of the above-described embodiments can be combined in any manner, and in order to make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.

[0024] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the utility model concept, several modifications and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A shock absorber, characterized in that, Includes a mandrel (1), a straightening sleeve (2) on the right side of the mandrel (1), a spline sleeve assembly (3) on the right side of the straightening sleeve (2), an upper shock pad (4) on the right side of the spline sleeve assembly (3), an anti-drop cap (5) on the right side of the upper shock pad (4), a retaining ring (6) on the right side of the anti-drop cap (5), an extension shaft (7) on the right side of the retaining ring (6), and a lower shock pad (8) on the right side of the extension shaft (7).

2. The shock absorber according to claim 1, characterized in that, The lower shock pad (8) is provided with an upper adjusting cylinder (9) on the right side, the upper adjusting cylinder (9) is provided with an upper adjusting body (10) on the right side, the upper adjusting body (10) is provided with a bushing (12) on the right side, and the bushing (12) is provided with a cylinder liner (11) on the right side.

3. The shock absorber according to claim 2, characterized in that, The cylinder liner (11) is provided with a slip sleeve (13) on the right side, the slip sleeve (13) is provided with a slip (16) on the right side, and the slip (16) is provided with a spacer sleeve (15) on the right side.

4. The shock absorber according to claim 3, characterized in that, The spacer sleeve (15) has an elastic sleeve (14) on its right side. The elastic sleeve (14) has a fixing hole plug (23) near the top on its right side. The fixing hole plug (23) has an adjusting hole plug (22) on its right side. The fixing hole plug (23) and the adjusting hole plug (22) have a lower adjusting body (17) at their bottoms.

5. The shock absorber according to claim 4, characterized in that, The lower adjusting body (17) is provided with an oil plug (21) on the right side, the oil plug (21) is provided with a lower adjusting cylinder (18) on the right side, the lower adjusting cylinder (18) is provided with a float assembly (19) on the right side, and the float assembly (19) is provided with a lower connector (20) on the right side.

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