A fishing device of slide rail type

Abstract

The present application relates to the field of oil exploration, it discloses a sliding rail type fishing device, including hollow cylinder, the continuous oil pipe to be fished is worn in the cylinder, it is characterized in following: it is fixed through the adjusting mechanism of the size of bottom opening to the continuous oil pipe, and the fishing mechanism in the adjusting mechanism is used to fish the continuous oil pipe;Adjusting mechanism includes multiple sliding plates hinged with the inner wall top of cylinder, adjusting column adjusts the opening angle of sliding plate and fixes the continuous oil pipe;Fishing mechanism includes strip hole arranged in the height direction of each sliding plate, the slide groove is formed in the strip hole, the slide groove is provided with vertical reciprocating screw rod towards the cavity of cylinder, the sliding block is installed on reciprocating screw rod, and motor drives the sliding block to move up and down on reciprocating screw rod;The continuous oil pipe is clamped by dragon claw.This application avoids sliding through the clamping of sliding plate and claw, so that the size of cylinder hole is adjusted, and the effect of adjusting according to different size of oil pipe is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of oil exploration, in particular to a sliding rail type fishing device. BACKGROUND

[0002] Oil is a mixture of gaseous, liquid and solid hydrocarbons with natural occurrence. Oil is divided into crude oil, natural gas, natural gas liquid and natural tar, but "oil" is still used as the definition of "crude oil". In the process of oil exploration, objects often fall or get stuck at the bottom of the well, so special fishing devices are needed for fishing.

[0003] The existing Chinese utility model patent with publication number CN 204877354U provides a sliding rail type fishing device. The device drives the sliding rail clamping jaw to move upwards along the sliding rail with inclination through the coiled tubing, compresses the spring, and opens the sliding rail clamping jaw radially. The coiled tubing enters the inside of the sliding rail clamping jaw, and the fishing pipe column is pulled upwards. At this time, the sliding rail clamping jaw slides downwards along the sliding rail under the action of the spring force, and the sliding rail clamping jaw contracts radially, clamping the coiled tubing. The coiled tubing is fished out without slipping and firmly, which not only does not damage the coiled tubing, but also simplifies the operation process, saves time and effort, and improves work efficiency. However, the inlet of the coiled tubing at the bottom of the cylinder is inclined and fixed, which makes the cylinder inlet smaller and unable to adjust according to the size of the coiled tubing. When the coiled tubing is small, the sliding rail clamping jaw cannot clamp the coiled tubing, and when the coiled tubing is large, it cannot be placed in the cylinder. SUMMARY

[0004] In order to overcome the above technical problems, the purpose of the present application is to provide a sliding rail type fishing device which can fix oil pipes of different diameters through an adjusting mechanism and fish them up using a fishing mechanism.

[0005] The present application provides the following technical solutions:

[0006] A sliding rail type fishing device includes a hollow cylinder (11), and a coiled tubing to be fished is inserted into the cylinder (11). The coiled tubing is fixed by an adjusting mechanism (1) which adjusts the size of the bottom opening, and the coiled tubing is fished by a fishing mechanism (2) provided in the adjusting mechanism (1).

[0007] The adjusting mechanism (1) comprises at least two sliding plates (12) hinged to the top of the inner wall of the barrel (11), the bottom of the barrel (11) is provided with a limiting ring table (13), the inner wall of the barrel (11) is provided with an adjusting groove (14) on the limiting ring table (13), the adjusting groove (14) is fixedly connected with a spring (15) inside, one end of the spring (15) is fixedly connected with a limiting plate (16) inward, the limiting plate (16) is fixedly connected with an adjusting column (17) inward, the adjusting column (17) adjusts the opening angle of the sliding plate (12) and fixes the coiled tubing;

[0008] The fishing mechanism (2) comprises a strip hole arranged in the height direction of each sliding plate (12), a sliding groove (21) is formed in the strip hole, a vertical reciprocating lead screw (22) is arranged in the cavity of the barrel (11) towards the sliding groove (21), the top of the reciprocating lead screw (22) is fixed to the upper end of the inner wall of the barrel (1), a sliding block (24) is installed on the reciprocating lead screw (22), the motor (23) drives the sliding block (24) to move up and down on the reciprocating lead screw (22); one end of the sliding block (24) is fixedly connected with an electric telescopic rod (26), one end of the electric telescopic rod (26) is fixedly connected with a claw (27), the fishing coiled tubing is clamped by the claw (27).

[0009] According to some embodiments, a plurality of sliding plates (12) are arranged in a ring shape.

[0010] According to some embodiments, the cross section of the sliding plate (12) is a circular arc shape.

[0011] According to some embodiments, the top of the barrel (11) is provided with an upper joint (18).

[0012] According to some embodiments, the width of the sliding block (24) is matched with the width of the sliding groove (21).

[0013] According to some embodiments, a plurality of protrusions are arranged on the contact surface of each claw (27).

[0014] Compared with the prior art, the present application has the following beneficial effects:

[0015] First, the sliding rail type fishing device provided by the present application connects the upper joint with the fishing string, so that the fishing string enters the oil well, and the bottom and inner side of the sliding plate are provided in the shape of a circular arc, so that the coiled tubing can be conveniently squeezed away from the sliding plate from the bottom of the cylinder, and then the sliding plate drives the adjusting column to press the limiting plate outward, the limiting plate squeezes the spring, so that the opening size of the bottom of the cylinder is increased, so that the coiled tubing enters the cylinder, and the coiled tubing is clamped by the sliding plate to avoid falling, so that the operation of adjusting the hole size is completed, and the effect of conveniently adjusting the oil pipe according to different sizes is achieved.

[0016] Second, the coiled tubing extends into the inside of the cylinder, and then the left and right electric telescopic rods are started to drive the clamping jaw to clamp the top of the coiled tubing, and then the motor is started to drive the reciprocating screw rod to rotate, and then the sliding block is driven to slide in the sliding groove, so that the electric telescopic rod is driven to rise by the sliding block, and then the coiled tubing is driven to rise, until the coiled tubing completely enters, at this time, the fishing string is extracted, and the clamping jaw is released by starting the left and right electric telescopic rods again, and the clamping jaw clamps the bottom of the coiled tubing by starting the front and back electric telescopic rods, so as to avoid the coiled tubing from falling, and the coiled tubing is fished out by continuing to extract the fishing string, so as to complete the fishing operation. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The schematic diagram of the fishing mechanism provided by the embodiment of the present application is shown in the figure.

[0018] Figure 2 The partial view of the adjusting groove provided by the embodiment of the present application is shown in the figure.

[0019] Figure 3 The cross-sectional view of the vertical section of the cylinder provided by the embodiment of the present application is shown in the figure.

[0020] Figure 4 The Figure 3 The enlarged partial view of position A in the figure.

[0021] Figure 5 The top view cross-sectional view provided by the embodiment of the present application is shown in the figure.

[0022] The reference signs in the figure are as follows:

[0023] 1, adjusting mechanism; 2, fishing mechanism; 11, cylinder; 12, sliding plate; 13, limiting ring table; 14, adjusting groove; 15, spring; 16, limiting plate; 17, adjusting column; 18, upper joint; 21, sliding groove; 22, reciprocating screw rod; 23, motor; 24, sliding block; 26, electric telescopic rod; 27, clamping jaw. DETAILED DESCRIPTION

[0024] The present application will be described in detail below with reference to the embodiments and drawings, but it should be understood that the embodiments and drawings are only used to exemplarily describe the present application, and cannot constitute any limitation to the protection scope of the present application. All reasonable variations and combinations within the scope of the inventive concept of the present application fall within the protection scope of the present application.

[0025] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and 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, and therefore cannot be understood as a limitation to the present application; the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance, in addition, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] The present application will be further described below with reference to the drawings.

[0027] Example one

[0028] Please refer to Figures 1-2 , the example includes a cylindrical barrel 11, the barrel 11 is provided with an adjusting mechanism 1 for clamping the coiled tubing to be fished, and the adjusting mechanism 1 is provided with a fishing mechanism 2 for fishing the coiled tubing.

[0029] The structure of the adjusting mechanism 1 is as shown in Figure 3 , two opposite sliding plates 12 are hingedly connected to the upper end of the barrel 11, a circular ring-shaped limiting ring table 13 is arranged at the bottom of the barrel 11, two adjusting grooves 14 are formed in the inner wall of the barrel 11 corresponding to the two sliding plates 12 above the limiting ring table 13, and a spring 15 is arranged in each adjusting groove 14; one end of the spring 15 is fixedly connected to the inner wall of the adjusting groove 14, the other end of the spring 15 is fixedly connected to a limiting plate 16 towards the inside of the barrel 11, the slot of the limiting groove 14 is provided with a limiting piece, the limiting piece is provided with a limiting hole, the size of the limiting hole is smaller than the size of the limiting plate 16, and the limiting plate 16 is limited in the limiting groove 14. The limiting plate 16 is fixedly connected to an adjusting column 17 towards the inside of the barrel 11;

[0030] The bottom and inner side surface of the sliding plate 12 are arc-shaped, facilitating the sliding plate 12 to be attached to the cylindrical oil pipe. When it is necessary to adjust and fix the coiled tubing, the coiled tubing can be extruded to push the sliding plate 12 away from the bottom of the cylinder 11, the sliding plate 12 drives the adjusting column 17 to press the limiting plate 16 outward, the limiting plate 16 extrudes the spring 15, thereby increasing the opening size of the bottom of the cylinder 11, the coiled tubing enters the cylinder 11, and the coiled tubing is clamped by the sliding plate 12 to avoid falling, thereby completing the operation of adjusting the hole size, and achieving the effect of conveniently adjusting according to oil pipes of different sizes.

[0031] The structure of the fishing mechanism 2 is as shown in Figures 3-5 A sliding groove 21 is formed in the middle of the sliding plate 12 in the upward and downward direction, a reciprocating screw rod 22 is located inside the sliding groove 21, the top end of the reciprocating screw rod 22 is fixedly connected with a motor 23 after passing through a fixed plate 28, the reciprocating screw rod 22 is provided with a sliding block 24, one end of the sliding block 24 can slide up and down on the inner wall of the sliding plate 12, the other end of the sliding block 24 is fixedly connected with an electric telescopic rod 26, one end of the electric telescopic rod 26 is fixedly connected with a clamping jaw 27.

[0032] In use, the size of the hole at the bottom of the cylinder 11 is adjusted by the adjusting mechanism 1, and then the coiled tubing is conveniently fished by the fishing mechanism 2, thereby completing the operation of adjusting the hole size and facilitating fishing.

[0033] In fishing work, the coiled tubing is inserted into the inside of the cylinder 11, then the clamping jaw 27 is clamped to the top of the coiled tubing by starting the electric telescopic rods 26 on the left and right sides, then the reciprocating screw rod 22 is rotated by starting the motor 23, thereby driving the sliding block 24 to slide in the sliding groove 21, so that the electric telescopic rod 26 is lifted by the sliding block 24, thereby driving the coiled tubing to rise until the coiled tubing is completely inserted, at this time, the fishing pipe column is extracted, the clamping jaw 27 is retracted by starting the electric telescopic rods 26 on the left and right sides to release the fixation, the clamping jaw 27 is clamped to the bottom of the coiled tubing by starting the electric telescopic rods 26 on the front and back sides to avoid the coiled tubing from falling, and the coiled tubing is fished out by continuing to extract the fishing pipe column, thereby completing the fishing operation.

[0034] Embodiment Two

[0035] In this embodiment, the top of the cylinder 11 is provided with an annular upper joint 18, which can be conveniently butted with the fishing pipe column.

[0036] Embodiment Three

[0037] In this embodiment, a plurality of sliding plates 12 are arranged in an annular array in the cylinder 11, and the inner wall of the sliding plate 12 is arc-shaped, facilitating the sliding plate 12 to be attached to and fixed to the cylindrical oil pipe.

[0038] The adjusting groove 14, the adjusting column 17 and the reciprocating screw rod 22 are provided with a plurality of corresponding adjusting grooves, and the number of the adjusting grooves is the same as that of the sliding plates 12. The plurality of adjusting grooves are arranged in a ring array, so that the angle of the sliding plate 12 can be better adjusted, thereby adjusting the size of the hole, and the plurality of sliding plates 12 can be adjusted and contracted through the plurality of corresponding adjusting columns 17. The plurality of reciprocating screw rods 22 can rotate in the sliding groove 21.

[0039] Specifically, the motor 23 is fixedly connected to the top of the sliding plate 12, and the length and width of the sliding block 24 are matched with the length and width of the sliding groove 21.

[0040] Through the above technical scheme, the sliding plate 12 can support the motor 23, and the length and width of the sliding block 24 are matched with the length and width of the sliding groove 21, so that the sliding block 24 can move linearly up and down in the sliding groove 21, and the oil pipe is clamped more stably.

[0041] Specifically, the number of the clamping jaws 27 is a plurality of corresponding, and a plurality of protrusions are arranged on the contact surface of each clamping jaw 27, Figure 4 As can be seen, the protrusions are triangular. The protrusions are used to increase the friction.

[0042] Through the above technical scheme, the clamping jaw 27 can increase the clamping force of the oil pipe, so as to avoid the oil pipe from falling off.

[0043] In use, by connecting the upper joint 18 to the fishing pipe column, the fishing pipe column enters the oil well, and by setting the bottom and inner side of the sliding plate 12 as a circular arc, the coiled tubing can be squeezed out of the sliding plate 12 from the bottom of the cylinder 11, so that the sliding plate 12 drives the adjusting column 17 to press the limiting plate 16 outward, so that the limiting plate 16 presses the spring 15, thereby increasing the size of the opening at the bottom of the cylinder 11, so that the coiled tubing enters the cylinder 11, and the sliding plate 12 clamps the coiled tubing to avoid falling off, thereby completing the operation of adjusting the size of the hole, and achieving the effect of conveniently adjusting the oil pipe of different sizes.

[0044] The above embodiments are only preferred embodiments of the present application, and the protection scope of the present application is not limited to the above embodiments. Any technical scheme falling within the concept of the present application belongs to the protection scope of the present application. It should be pointed out that, for ordinary skilled persons in the art, improvements and refinements without departing from the principles of the present application are also considered as the protection scope of the present application.

Claims

1. A slickline fishing device comprising a hollow barrel (11) through which a continuous tubing to be fished is threaded, characterised in that: The present application is characterized by the following: the coiled tubing is fixed by the adjusting mechanism (1) which adjusts the size of the bottom opening, and the coiled tubing is fished by the fishing mechanism (2) which is arranged in the adjusting mechanism (1). The adjusting mechanism (1) comprises at least two sliding plates (12) which are hinged to the top of the inner wall of the barrel (11), a limiting ring table (13) is arranged at the bottom of the barrel (11), an adjusting groove (14) is arranged on the limiting ring table (13) and the inner wall of the barrel (11), a spring (15) is fixedly connected inside the adjusting groove (14), a limiting plate (16) is fixedly connected to one end of the spring (15), an adjusting column (17) is fixedly connected to the limiting plate (16), the adjusting column (17) adjusts the opening angle of the sliding plate (12) and fixes the coiled tubing; The fishing mechanism (2) comprises a strip hole which is arranged in the height direction of each sliding plate (12), a sliding groove (21) is formed in the strip hole, a vertical reciprocating lead screw (22) is arranged in the cavity of the barrel (11) towards the sliding groove (21), the top of the reciprocating lead screw (22) is fixed to the upper end of the inner wall of the barrel (11), a sliding block (24) is installed on the reciprocating lead screw (22), a motor (23) drives the sliding block (24) to move up and down on the reciprocating lead screw (22), one end of the sliding block (24) is fixedly connected with an electric telescopic rod (26), one end of the electric telescopic rod (26) is fixedly connected with a clamping jaw (27), and the clamping jaw (27) clamps the fishing coiled tubing.

2. The slickline fishing device of claim 1, wherein: A plurality of sliding plates (12) are arranged in a ring shape.

3. The slickline fishing device of claim 2, wherein: The cross section of the sliding plate (12) is a circular arc shape.

4. The slickline fishing device of claim 1, wherein: An upper joint (18) is arranged at the top of the barrel (11).

5. The slickline fishing device of claim 1, wherein: The width of the sliding block (24) is matched with the width of the sliding groove (21).

6. The slickline fishing device of claim 1, wherein: A plurality of protrusions are arranged on the contact surface of each clamping jaw (27).

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